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| version 1.5, 2025/03/22 22:52:24 | version 1.22, 2025/04/13 04:22:43 |
|---|---|
| Line 24 | Line 24 |
| * along with FreeM. If not, see <https://www.gnu.org/licenses/>. | * along with FreeM. If not, see <https://www.gnu.org/licenses/>. |
| * | * |
| * $Log$ | * $Log$ |
| * Revision 1.22 2025/04/13 04:22:43 snw | |
| * Fix snprintf calls | |
| * | |
| * Revision 1.21 2025/04/11 20:55:49 snw | |
| * Disable -Wunused-result where possible | |
| * | |
| * Revision 1.20 2025/04/11 18:24:32 snw | |
| * Fix bug in memory cache | |
| * | |
| * Revision 1.19 2025/04/11 16:52:05 snw | |
| * Fix indentation in global handler | |
| * | |
| * Revision 1.18 2025/04/11 16:23:18 snw | |
| * Avoid re-reading the same block consecutively when possible | |
| * | |
| * Revision 1.17 2025/04/11 14:21:03 snw | |
| * Make all but one of the read/write calls in global_bltin use gbl_read_block or gbl_write_block | |
| * | |
| * Revision 1.16 2025/04/11 00:52:40 snw | |
| * Replace all lseek/read calls in global handler to use gbl_read_block function | |
| * | |
| * Revision 1.15 2025/04/10 01:24:38 snw | |
| * Remove C++ style comments | |
| * | |
| * Revision 1.14 2025/04/09 19:52:02 snw | |
| * Eliminate as many warnings as possible while building with -Wall | |
| * | |
| * Revision 1.13 2025/04/09 14:34:30 snw | |
| * Further work on global_bltin.c refactor | |
| * | |
| * Revision 1.12 2025/04/09 00:43:07 snw | |
| * Exit with fatal error if a header mismatch found | |
| * | |
| * Revision 1.11 2025/04/08 21:41:13 snw | |
| * Make insert, update, and splitp global handler functions take a ptr to a global_handle instead of a file descriptor | |
| * | |
| * Revision 1.10 2025/04/08 20:00:56 snw | |
| * Global handler now uses a header file and maintains the last journaling transaction ID | |
| * | |
| * Revision 1.9 2025/04/08 16:46:11 snw | |
| * Add global file header and offsets | |
| * | |
| * Revision 1.8 2025/04/08 14:39:21 snw | |
| * Initial work on global handler refactor | |
| * | |
| * Revision 1.7 2025/03/24 04:13:11 snw | |
| * Replace action macro dat with fra_dat to avoid symbol conflict on OS/2 | |
| * | |
| * Revision 1.6 2025/03/24 01:33:30 snw | |
| * Guard declaration of time function in global_bltin.c for portability | |
| * | |
| * Revision 1.5 2025/03/22 22:52:24 snw | * Revision 1.5 2025/03/22 22:52:24 snw |
| * Add STRLEN_GBL macro to manage global string length | * Add STRLEN_GBL macro to manage global string length |
| * | * |
| Line 40 | Line 91 |
| #include <fcntl.h> | #include <fcntl.h> |
| #include <unistd.h> | #include <unistd.h> |
| #include <string.h> | #include <string.h> |
| #include <stdlib.h> | |
| #include <errno.h> | #include <errno.h> |
| #include "mpsdef.h" | #include "mpsdef.h" |
| #include "journal.h" | |
| #include "global_bltin.h" | |
| static void b_free (short filedes, unsigned long blknbr); | global_handle *global_handles_head; |
| static void splitp (short filedes, char *block, long *addr, long *offs, unsigned long *blknbr); | unsigned long gbl_cache_misses = 0; |
| static void update (short filedes, char *ins_key, long keyl); | unsigned long gbl_cache_hits = 0; |
| static void insert (int filedes, char *ins_key, long key_len, unsigned long blknbr); | |
| static void b_free (global_handle *g, unsigned long blknbr); | |
| static void splitp (global_handle *g, char *block, long *addr, long *offs, unsigned long *blknbr); | |
| static void update (global_handle *g, char *ins_key, long keyl); | |
| static void insert (global_handle *g, char *ins_key, long key_len, unsigned long blknbr); | |
| static void scanpblk (char *block, long *adr, long *fnd); | static void scanpblk (char *block, long *adr, long *fnd); |
| static void scandblk (char *block, long *adr, long *fnd); | static void scandblk (char *block, long *adr, long *fnd); |
| static void getnewblk (int filedes, unsigned long *blknbr); | static void getnewblk (global_handle *g, unsigned long *blknbr); |
| static short int g_collate (char *t); | static short int g_collate (char *t); |
| //static short int g_numeric (char *str); | |
| short g_numeric (char *str); | short g_numeric (char *str); |
| void close_all_globals(void); | void close_all_globals(void); |
| static void panic (void); | static void panic (void); |
| #define ROOT 0L | #if !defined(__OpenBSD__) && !defined(_AIX) && !defined(__osf__) && !defined(MSDOS) && !defined(__vax__) && !defined(__OS2__) |
| long time (); | |
| #endif | |
| /* end of line symbol in global module is 30, which is a code not */ | inline long gbl_path(char *key, char *buf) |
| /* otherwise used in subscripts */ | { |
| #define g_EOL 30 | long savj; |
| #define EOL1 EOL | register long int i; |
| register long int j; | |
| /* numerics (('.'<<1)&037)==28 ; (('-'<<1)&037)==26; */ | register long int k; |
| #define POINT 28 | register long int ch; |
| #define MINUS 26 | |
| /* construct full UNIX filename */ | |
| /* ALPHA and OMEGA are dummy subscripts in $order processing */ | savj = 0; |
| /* ALPHA sorts before all other subscripts */ | k = 0; |
| /* OMEGA sorts after all other subscripts */ | j = savj; |
| /* e.g. ("abc") -> "abc",OMEGA ; ("abc","") -> "abc",ALPHA */ | |
| #define OMEGA 29 | if (key[1] == '%' || key[1] == '$') { /* %-globals and SSVN backing storage, no explicit path */ |
| #define ALPHA 31 | |
| if (gloplib[0] != EOL) { | |
| /* length of blocks. status bytes defined as offset to blocklength */ | |
| /* BLOCKLEN 1024 is defined in mpsdef0 include file */ | /* append % global access path */ |
| #define DATALIM (BLOCKLEN-11) | while ((ch = buf[k++] = gloplib[j++]) != ':' && ch != EOL); |
| #define LLPTR (BLOCKLEN-10) | |
| #define NRBLK LLPTR | } |
| #define COLLA (BLOCKLEN- 7) | |
| #define RLPTR (BLOCKLEN- 6) | } |
| #define FREE RLPTR | else if (key[1] != '/') { /* no explicit path specified */ |
| #define BTYP (BLOCKLEN- 3) | |
| #define OFFS (BLOCKLEN- 2) | if (glopath[0] != EOL) { |
| /* length of blockpointers in bytes */ | /* append global access path */ |
| #define PLEN 3 | while ((ch = buf[k++] = glopath[j++]) != ':' && ch != EOL); |
| #define EMPTY 0 | } |
| #define FBLK 1 | |
| #define POINTER 2 | } |
| #define BOTTOM 6 | |
| #define DATA 8 | if (k > 0) { |
| if (k == 1 || (k == 2 && buf[0] == '.')) { | |
| k = 0; | |
| } | |
| else { | |
| buf[k - 1] = '/'; | |
| } | |
| } | |
| savj = j; | |
| i = 0; | |
| j = 0; | |
| while (key[i] != EOL) { | |
| if ((buf[k] = key[i]) == DELIM) break; | |
| if (buf[k] == '/') { | |
| j = i; | |
| if (k > i) { | |
| i = 0; | |
| j = 0; | |
| k = 0; | |
| continue; | |
| } | |
| } | |
| i++; | |
| k++; | |
| } | |
| buf[k] = NUL; /* NUL not EOL !!! */ | |
| return i; | |
| } /* gbl_path() */ | |
| void gbl_cache_hit(global_handle *g) | |
| { | |
| g->cache_hits++; | |
| gbl_cache_hits++; | |
| } /* gbl_cache_hit() */ | |
| void gbl_cache_miss(global_handle *g) | |
| { | |
| g->fast_path = 0; | |
| g->cache_misses++; | |
| gbl_cache_misses++; | |
| } /* gbl_cache_miss() */ | |
| int gbl_lock(global_handle *g, int type) | |
| { | |
| if (g->locked == TRUE || lonelyflag == TRUE) { | |
| return TRUE; | |
| } | |
| locking (g->fd, type, 0L); | |
| g->locked = TRUE; | |
| return TRUE; | |
| } /* gbl_lock() */ | |
| int gbl_unlock(global_handle *g) | |
| { | |
| if (g->locked == FALSE || lonelyflag == TRUE) { | |
| return TRUE; | |
| } | |
| locking (g->fd, 0, 0L); | |
| g->locked = FALSE; | |
| return TRUE; | |
| } /* gbl_unlock() */ | |
| void gbl_close(global_handle *g) | |
| { | |
| if (g->opened == TRUE) { | |
| close (g->fd); | |
| g->use_count = 0; | |
| g->age = 0; | |
| g->last_block = 0; | |
| g->locked = FALSE; | |
| g->opened = FALSE; | |
| } | |
| } /* gbl_close() */ | |
| void gbl_close_all(void) | |
| { | |
| global_handle *g; | |
| for (g = global_handles_head; g != NULL; g = g->next) { | |
| gbl_close (g); | |
| } | |
| } /* gbl_close_all() */ | |
| int gbl_write_initial_header(global_handle *g) | |
| { | |
| global_header hdr; | |
| unsigned long old_position; | |
| char m[5] = GBL_MAGIC; | |
| char msg[256]; | |
| if (g->opened == FALSE) { | |
| return FALSE; | |
| } | |
| memcpy (hdr.magic, m, 5); | |
| hdr.format_version = GBL_FORMAT_VERSION; | |
| strncpy (hdr.host_triplet, HOST, 40); | |
| hdr.block_size = BLOCKLEN; | |
| hdr.last_transaction_id = 0; | |
| hdr.created = time (0L); | |
| hdr.last_backup = -1; | |
| gbl_lock (g, 1); | |
| old_position = lseek (g->fd, 0, SEEK_CUR); | |
| lseek (g->fd, 0, SEEK_SET); | |
| if (write (g->fd, &hdr, sizeof (global_header)) == -1) { | |
| snprintf (msg, sizeof (msg) - 1, "error %d writing global header for %s", errno, g->global_name); | |
| m_fatal (msg); | |
| } | |
| lseek (g->fd, old_position, SEEK_SET); | |
| gbl_unlock (g); | |
| return TRUE; | |
| } /* gbl_write_initial_header() */ | |
| int gbl_write_header(global_handle *g, global_header *hdr) | |
| { | |
| unsigned long old_position; | |
| char msg[256]; | |
| if (g->opened == FALSE) { | |
| return FALSE; | |
| } | |
| gbl_lock (g, 1); | |
| old_position = lseek (g->fd, 0, SEEK_CUR); | |
| lseek (g->fd, 0, SEEK_SET); | |
| if (write (g->fd, hdr, sizeof (global_header)) == -1) { | |
| snprintf (msg, sizeof (msg) - 1, "error %d writing global header for %s", errno, g->global_name); | |
| m_fatal (msg); | |
| } | |
| lseek (g->fd, old_position, SEEK_SET); | |
| gbl_unlock (g); | |
| gbl_read_header (g, &g->header); | |
| return TRUE; | |
| } /* gbl_write_header() */ | |
| int gbl_read_header(global_handle *g, global_header *h) | |
| { | |
| unsigned long old_position; | |
| char m[5] = GBL_MAGIC; | |
| if (g->opened == FALSE) { | |
| return GBL_HDR_NOTOPEN; | |
| } | |
| gbl_lock (g, 1); | |
| old_position = lseek (g->fd, 0, SEEK_CUR); | |
| lseek (g->fd, 0, SEEK_SET); | |
| read (g->fd, h, sizeof (global_header)); | |
| lseek (g->fd, old_position, SEEK_SET); | |
| gbl_unlock (g); | |
| if (strncmp (h->magic, m, 5) != 0) { | |
| return GBL_HDR_BADMAGIC; | |
| } | |
| if (h->format_version != GBL_FORMAT_VERSION) { | |
| return GBL_HDR_BADVERSION; | |
| } | |
| if (h->block_size != BLOCKLEN) { | |
| return GBL_HDR_BADBLOCKSIZE; | |
| } | |
| return GBL_HDR_OK; | |
| } /* gbl_read_header() */ | |
| int gbl_update_tid(global_handle *g) | |
| { | |
| global_header h; | |
| if (gbl_read_header (g, &h) != GBL_HDR_OK) { | |
| return FALSE; | |
| } | |
| h.last_transaction_id = jnl_tran_id; | |
| return gbl_write_header (g, &h); | |
| } /* gbl_update_tid() */ | |
| int gbl_create(global_handle *g) | |
| { | |
| while (1) { | |
| errno = 0; | |
| if ((g->fd = creat (g->global_path, 0666)) != -1) break; | |
| if (errno == EMFILE || errno == ENFILE) { | |
| gbl_close_all (); | |
| continue; | |
| } | |
| return PROTECT; | |
| } | |
| g->opened = TRUE; | |
| g->age = time (0L); | |
| g->last_block = 0; | |
| g->use_count = 1; | |
| g->fast_path = 0; | |
| gbl_write_initial_header (g); | |
| return OK; | |
| } /* gbl_create() */ | |
| short gbl_open(global_handle *g, short action) | |
| { | |
| int result; | |
| if (g->opened == FALSE) { | |
| gbl_cache_miss (g); | |
| while (1) { | |
| errno = 0; | |
| g->fd = open (g->global_path, 2); | |
| if (g->fd != -1) break; | |
| switch (errno) { | |
| case EINTR: | |
| continue; | |
| case EMFILE: | |
| case ENFILE: | |
| gbl_close_all (); | |
| continue; | |
| } | |
| break; | |
| } | |
| if (g->fd == -1) { | |
| g->use_count = 0; | |
| g->age = 0; | |
| g->last_block = 0; | |
| g->locked = FALSE; | |
| g->opened = FALSE; | |
| } | |
| else { | |
| g->opened = TRUE; | |
| result = gbl_read_header (g, &g->header); | |
| if (result == GBL_HDR_OK) { | |
| /* initialize last_block_accessed cache */ | |
| g->last_block_accessed = (char *) calloc (g->header.block_size, sizeof (char)); | |
| NULLPTRCHK(g->last_block_accessed,"gbl_open"); | |
| g->opened = TRUE; | |
| } | |
| else { | |
| gbl_close (g); | |
| set_io (UNIX); | |
| switch (result) { | |
| case GBL_HDR_BADMAGIC: | |
| fprintf (stderr, "gbl_open: bad magic value in %s [FATAL]\n", g->global_name); | |
| exit (1); | |
| break; | |
| case GBL_HDR_BADVERSION: | |
| fprintf (stderr, "gbl_open: global version is %d in %s (must be %d) [FATAL]\n", g->header.format_version, g->global_name, GBL_FORMAT_VERSION); | |
| exit (1); | |
| break; | |
| } | |
| return FALSE; | |
| } | |
| } | |
| } | |
| return g->opened; | |
| } /* gbl_open() */ | |
| int gbl_read_block(global_handle *g, unsigned long blocknum, char *block) | |
| { | |
| struct stat gstat; | |
| unsigned long hdr_offset; | |
| hdr_offset = sizeof (global_header); | |
| if (g->opened == FALSE) { | |
| return FALSE; | |
| } | |
| g->use_count++; | |
| if (!g->locked) gbl_lock (g, 1); | |
| fstat (g->fd, &gstat); | |
| if ((g->last_block == blocknum) && | |
| (g->have_cached_block) && | |
| (g->cached_block_num == blocknum) && | |
| (gstat.st_mtime < g->last_read_time)) { | |
| /* the global has not been modified since the last read; grab from memory */ | |
| g->memory_reads++; | |
| memcpy (block, g->last_block_accessed, g->header.block_size); | |
| } | |
| else { | |
| /* have to go out to disk */ | |
| lseek (g->fd, hdr_offset + ((long) blocknum * (long) (g->header.block_size)), SEEK_SET); | |
| read (g->fd, block, g->header.block_size); | |
| /* update cache */ | |
| memcpy (g->last_block_accessed, block, g->header.block_size); | |
| g->have_cached_block = TRUE; | |
| g->cached_block_num = blocknum; | |
| g->last_block = blocknum; | |
| g->read_ops++; | |
| } | |
| g->last_read_time = time (0L); | |
| g->use_count++; | |
| if (g->locked) gbl_unlock (g); | |
| return TRUE; | |
| } /* gbl_read_block() */ | |
| int gbl_write_block(global_handle *g, unsigned long blocknum, char *block) | |
| { | |
| int errsav; | |
| unsigned long hdr_offset; | |
| hdr_offset = sizeof (global_header); | |
| if (g->opened == FALSE) { | |
| return FALSE; | |
| } | |
| gbl_lock (g, 1); | |
| for (;;) { | |
| errno = 0; | |
| lseek (g->fd, hdr_offset + (blocknum * g->header.block_size), SEEK_SET); | |
| write (g->fd, block, g->header.block_size); | |
| errsav = errno; | |
| g->last_block = blocknum; | |
| g->use_count++; | |
| g->write_ops++; | |
| if (errsav == 0) break; | |
| panic (); | |
| } | |
| gbl_update_tid (g); | |
| gbl_unlock (g); | |
| return TRUE; | |
| } | |
| global_handle *gbl_handle(char *key) | |
| { | |
| global_handle *g; | |
| char global_name[256]; | |
| int i; | |
| struct stat dinf; | |
| i = 0; | |
| while (key[i] != EOL) { | |
| if ((global_name[i] = key[i]) == DELIM) break; | |
| i++; | |
| } | |
| global_name[i] = NUL; | |
| for (g = global_handles_head; g != NULL; g = g->next) { | |
| if (strncmp (g->global_name, global_name, 256) == 0) { | |
| g->use_count++; | |
| if (!lonelyflag) { | |
| g->fast_path = 0; | |
| } | |
| fstat (g->fd, &dinf); | |
| if (g->age > dinf.st_mtime) { | |
| g->fast_path = 2; | |
| return g; | |
| } | |
| g->age = time (0L); | |
| g->fast_path = 0; | |
| return g; | |
| } | |
| } | |
| g = (global_handle *) malloc (sizeof (global_handle)); | |
| NULLPTRCHK(g,"gbl_open"); | |
| g->use_count = 1; | |
| g->locked = FALSE; | |
| g->age = time (0L); | |
| g->last_read_time = 0; | |
| g->last_block = 0; | |
| g->opened = FALSE; | |
| g->fd = 0; | |
| g->fast_path = -1; | |
| g->cache_misses = 0; | |
| g->cache_hits = 0; | |
| g->read_ops = 0; | |
| g->write_ops = 0; | |
| g->memory_reads = 0; | |
| g->have_cached_block = FALSE; | |
| g->last_block_accessed = NULL; | |
| strcpy (g->global_name, global_name); | |
| gbl_path (key, g->global_path); | |
| g->next = global_handles_head; | |
| global_handles_head = g; | |
| return g; | |
| } /* gbl_handle() */ | |
| #if !defined(__OpenBSD__) && !defined(_AIX) && !defined(__osf__) && !defined(MSDOS) && !defined(__vax__) | |
| long time (); | |
| #endif | |
| /* globals management */ | /* globals management */ |
| Line 176 static void panic (void); | Line 674 static void panic (void); |
| * the file is *not* closed on return. since access is regulated by the | * the file is *not* closed on return. since access is regulated by the |
| * locking mechanism, that will not spell trouble. | * locking mechanism, that will not spell trouble. |
| */ | */ |
| void global_bltin (short action, char *key, char *data) | void global_bltin (short action, char *key, char *data) |
| { | { |
| /* these must be static variables */ | global_handle *g; |
| static short filedes; /* filedescr for global access */ | unsigned long hdr_offset; |
| /* these must be static variables */ | |
| static char filnam[256]; /* name of global/unix file */ | static char filnam[256]; /* name of global/unix file */ |
| /* the following vars may be */ | /* the following vars may be */ |
| /* static or dynamic */ | /* static or dynamic */ |
| static unsigned long blknbr; /* block number */ | static unsigned long blknbr; /* block number */ |
| static unsigned long oldblk; | |
| static unsigned long newblk; | static unsigned long newblk; |
| static unsigned long other; | static unsigned long other; |
| static long j1; | static long j1; |
| static long limit; | static long limit; |
| static short typ; /* block type */ | static short typ; /* block type */ |
| static long keyl, /* length of compacted key */ | static long keyl; /* length of compacted key */ |
| datal, /* length of data */ | static long datal; /* length of data */ |
| olddatal, | static long olddatal; |
| offset, | static long offset; |
| found, | static long found; |
| addr, /* address of key in 'block' */ | static long addr; /* address of key in 'block' */ |
| needed, /* new bytes needed to ins. stuff */ | static long needed; /* new bytes needed to ins. stuff */ |
| ret_to, /* return code */ | static long ret_to; /* return code */ |
| kill_again; | static long kill_again; |
| static char key1[256]; | static char key1[256]; |
| static char tmp1[256]; /* intermediate storage for op= */ | static char tmp1[256]; /* intermediate storage for op= */ |
| static char block[BLOCKLEN]; | static char block[BLOCKLEN]; |
| static int getnflag; /* flag 1=$ZO-variable 0=$Q-function */ | static int getnflag; /* flag 1=$ZO-variable 0=$Q-function */ |
| static int tryfast; /* try fast access if get_sym on */ | static int tryfast; /* try fast access if get_sym on */ |
| /* previous global */ | /* previous global */ |
| struct stat dinf; /* get modification date */ | |
| long savj, | |
| savch; /* saved j and ch for multiple pathes */ | |
| register long int i, | |
| j, | |
| k, | |
| ch; | |
| long pathscan; /* flag for repeated scan of pathlist setting an undef global */ | |
| int iresult; | |
| register long int i; | |
| register long int j; | |
| register long int k; | |
| register long int ch; | |
| j = 0; | |
| hdr_offset = sizeof (global_header); | |
| /* process optional limitations */ | /* process optional limitations */ |
| if (glvnflag.all && key[0] >= '%' && key[0] <= 'z') { | if (glvnflag.all && key[0] >= '%' && key[0] <= 'z') { |
| if ((i = glvnflag.one[0])) { /* number of significant chars */ | if ((i = glvnflag.one[0])) { /* number of significant chars */ |
| j = 0; | j = 0; |
| while ((k = key[j]) != DELIM && k != EOL) { | while ((k = key[j]) != DELIM && k != EOL) { |
| if (j >= i) { | if (j >= i) { |
| while ((k = key[++j]) != DELIM && k != EOL); | while ((k = key[++j]) != DELIM && k != EOL); |
| stcpy (&key[i], &key[j]); | stcpy (&key[i], &key[j]); |
| break; | break; |
| } | } |
| j++; | j++; |
| } | } |
| } | } |
| if (glvnflag.one[1]) { /* upper/lower sensitivity */ | if (glvnflag.one[1]) { /* upper/lower sensitivity */ |
| j = 0; | j = 0; |
| while ((k = key[j]) != DELIM && k != EOL) { | while ((k = key[j]) != DELIM && k != EOL) { |
| if (k >= 'a' && k <= 'z') key[j] = k - 32; | if (k >= 'a' && k <= 'z') key[j] = k - 32; |
| j++; | j++; |
| } | } |
| } | } |
| if ((i = glvnflag.one[2])) { | if ((i = glvnflag.one[2])) { |
| if (stlen (key) > i) { | if (stlen (key) > i) { |
| merr_raise (M75); | merr_raise (M75); |
| return; | return; |
| } /* key length limit */ | } /* key length limit */ |
| } | } |
| if ((i = glvnflag.one[3])) { /* subscript length limit */ | if ((i = glvnflag.one[3])) { /* subscript length limit */ |
| j = 0; | j = 0; |
| while ((k = key[j++]) != DELIM && k != EOL); | while ((k = key[j++]) != DELIM && k != EOL); |
| if (k == DELIM) { | if (k == DELIM) { |
| k = 0; | k = 0; |
| for (;;) { | for (;;) { |
| k = key[j++]; | k = key[j++]; |
| if (k == DELIM || k == EOL) { | if (k == DELIM || k == EOL) { |
| if (k > i) { | if (k > i) { |
| merr_raise (M75); | merr_raise (M75); |
| return; | return; |
| } | } |
| k = 0; | k = 0; |
| } | } |
| if (k == EOL) break; | if (k == EOL) break; |
| k++; | k++; |
| } | } |
| } | } |
| } | } |
| } | } |
| if (action == getnext) { | |
| if (action == getnext) { | |
| getnflag = TRUE; | getnflag = TRUE; |
| varnam[0] = EOL; | varnam[0] = EOL; |
| Line 357 void global_bltin (short action, char *k | Line 834 void global_bltin (short action, char *k |
| } | } |
| } | } |
| if (v22ptr) { | g = gbl_handle (key); |
| i = gbl_path (key, filnam); | |
| procv22 (key); | |
| if (key[0] != '^') { | |
| char losav[256]; | |
| stcpy (losav, l_o_val); | |
| symtab (action, key, data); | |
| stcpy (g_o_val, l_o_val); | |
| stcpy (l_o_val, losav); | |
| return; | |
| } | |
| } | |
| /* construct full UNIX filename */ | |
| savj = 0; | |
| savch = ch = EOL; | |
| pathscan = TRUE; | |
| nextpath: | |
| k = 0; | |
| j = savj; | |
| if (key[1] == '%' || key[1] == '$') { /* %-globals and SSVN backing storage, no explicit path */ | |
| if (gloplib[0] != EOL) { | |
| /* append % global access path */ | |
| while ((ch = filnam[k++] = gloplib[j++]) != ':' && ch != EOL); | |
| } | |
| } | |
| else if (key[1] != '/') { /* no explicit path specified */ | |
| if (glopath[0] != EOL) { | |
| /* append global access path */ | |
| while ((ch = filnam[k++] = glopath[j++]) != ':' && ch != EOL); | |
| } | |
| } | |
| if (savj == 0 && ch == EOL) pathscan = FALSE; /* one path only: inhibit search */ | |
| if (k > 0) { | |
| if (k == 1 || (k == 2 && filnam[0] == '.')) { | |
| k = 0; | |
| } | |
| else { | |
| filnam[k - 1] = '/'; | |
| } | |
| } | |
| savch = ch; | |
| savj = j; | |
| i = 0; | |
| j = 0; | |
| while (key[i] != EOL) { | |
| if ((filnam[k] = key[i]) == DELIM) break; | |
| if (filnam[k] == '/') { | |
| j = i; | |
| if (k > i) { | |
| i = 0; | |
| j = 0; | |
| k = 0; | |
| continue; | |
| } | |
| } | |
| i++; | |
| k++; | |
| } | |
| filnam[k] = NUL; /* NUL not EOL !!! */ | |
| /* if a unix directory is specified, reposition '^' */ | |
| /* '^/usr/test' becomes '/usr/^test' */ | |
| if (j > 0) { | |
| for (k = 0; k < j; k++) { | |
| filnam[k] = filnam[k + 1]; | |
| } | |
| filnam[j] = '^'; | |
| } | |
| /* compact key to internal format: characters are shifted left */ | /* compact key to internal format: characters are shifted left */ |
| /* delimiters become LSB of previous character */ | /* delimiters become LSB of previous character */ |
| /* test subscripts for being numeric or not */ | /* test subscripts for being numeric or not */ |
| Line 518 void global_bltin (short action, char *k | Line 898 void global_bltin (short action, char *k |
| compactkey[k++] = ch << 1; | compactkey[k++] = ch << 1; |
| } | } |
| else if (ch < SP || ch >= DEL) { | else if (ch < SP || ch >= DEL) { |
| /* no CTRLs */ | |
| /*no CTRLs */ | |
| merr_raise (SBSCR); | merr_raise (SBSCR); |
| return; | return; |
| } | } |
| Line 592 void global_bltin (short action, char *k | Line 970 void global_bltin (short action, char *k |
| compactkey[k] = g_EOL; | compactkey[k] = g_EOL; |
| /* look whether file is already open */ | |
| tryfast = FALSE; | |
| ch = usage[i = j = inuse]; | |
| while (i < NO_GLOBLS) { | |
| k = 0; | |
| while (filnam[k] == oldfil[i][k]) { | |
| if (filnam[k++] == NUL) { | |
| filedes = olddes[i]; | |
| if (inuse == i && action == get_sym) { | |
| tryfast = TRUE; | |
| if (usage[i] != (-1)) usage[i]++; | |
| if (lonelyflag) goto tfast2; | |
| fstat (filedes, &dinf); | |
| if (g_ages[i] > dinf.st_mtime) goto tfast2; | |
| g_ages[i] = time (0L); | |
| goto tfast0; | |
| } | |
| inuse = i; | |
| if (usage[i] != (-1)) usage[i]++; | |
| goto lock; | |
| } | |
| } | |
| if (ch < 0 || (usage[i] >= 0 && usage[i] < ch)) ch = usage[j = i]; | |
| if (i++ == inuse) { | |
| inuse = (-1); | |
| i = 0; | |
| } | |
| } | |
| inuse = j; | |
| usage[j] = 1; | |
| /* close previous file */ | |
| if ((filedes = olddes[j]) > 0) { | |
| close (filedes); | |
| olddes[j] = 0; | |
| } | |
| strcpy (oldfil[j], filnam); /* save current filename */ | |
| reopen: | reopen: |
| for (;;) { | if (!gbl_open (g, action)) { |
| errno = 0; | |
| if ((filedes = open (filnam, 2)) != -1) break; | |
| if (errno == EINTR) continue; | |
| if (errno == EMFILE || errno == ENFILE) { /* too many open files now */ | |
| close_all_globals (); | |
| continue; | |
| } | |
| break; | |
| } | |
| if (filedes == -1) { | |
| usage[inuse] = 0; | |
| oldfil[inuse][0] = NUL; | |
| olddes[inuse] = 0; | |
| g_ages[inuse] = 0; | |
| if ((pathscan || errno != ENOENT) && (savch != EOL)) goto nextpath; /* try next access path */ | |
| /* file not found */ | /* file not found */ |
| if (action != set_sym) { | if (action != set_sym) { |
| Line 687 reopen: | Line 982 reopen: |
| return; | return; |
| } | } |
| if (action == dat || action == zdata) { | if (action == fra_dat || action == zdata) { |
| data[0] = '0'; | data[0] = '0'; |
| data[1] = EOL1; | data[1] = EOL1; |
| Line 711 reopen: | Line 1006 reopen: |
| merr_raise (PROTECT); | merr_raise (PROTECT); |
| return; | return; |
| } | } |
| if (pathscan) { | |
| savj = 0; | |
| savch = ch = EOL; | |
| pathscan = FALSE; | |
| goto nextpath; | |
| } | |
| if (setop) { | if (setop) { |
| tmp1[0] = EOL; | tmp1[0] = EOL; |
| Line 749 reopen: | Line 1036 reopen: |
| block[NRBLK + 2] = ROOT + 1; /* nr. of blocks */ | block[NRBLK + 2] = ROOT + 1; /* nr. of blocks */ |
| /* create file, write_lock it and initialize root block */ | /* create file, write_lock it and initialize root block */ |
| for (;;) { | gbl_lock (g, 1); |
| errno = 0; | if ((iresult = gbl_create (g)) != OK) { |
| merr_raise (iresult); | |
| if ((filedes = creat (filnam, 0666)) != -1) break; | |
| if (errno == EMFILE || errno == ENFILE) { | |
| close_all_globals (); | |
| continue; | |
| } | |
| merr_raise (PROTECT); | |
| return; | return; |
| } | } |
| if (lonelyflag == FALSE) locking (filedes, 1, 0L); | gbl_write_block (g, ROOT, block); |
| for (;;) { | |
| errno = 0; | |
| lseek (filedes, ROOT * BLOCKLEN, 0); | |
| write (filedes, block, BLOCKLEN); | |
| if (errno == 0) break; | |
| panic (); | |
| } | |
| block[NRBLK] = 0; | block[NRBLK] = 0; |
| block[NRBLK + 1] = 0; | block[NRBLK + 1] = 0; |
| block[NRBLK + 2] = ROOT; /* clear */ | block[NRBLK + 2] = ROOT; /* clear */ |
| Line 788 reopen: | Line 1055 reopen: |
| block[BTYP] = DATA; /* type */ | block[BTYP] = DATA; /* type */ |
| block[OFFS] = i / 256; | block[OFFS] = i / 256; |
| block[OFFS + 1] = i % 256; | block[OFFS + 1] = i % 256; |
| for (;;) { | |
| errno = 0; | |
| write (filedes, block, BLOCKLEN); | |
| if (errno == 0) break; | |
| lseek (filedes, (ROOT + 1L) * BLOCKLEN, 0); | |
| panic (); | |
| } | |
| close (filedes); | gbl_write_block (g, ROOT + 1, block); |
| if (lonelyflag == FALSE) locking (filedes, 0, 0L); /* unlock */ | |
| gbl_close (g); | |
| gbl_unlock (g); | |
| gbl_open (g, action); | |
| /* close new file, so other users can find it */ | /* close new file, so other users can find it */ |
| return; | return; |
| } | } |
| olddes[inuse] = filedes; /* save current filedescriptor */ | |
| /* request global for exclusive use */ | /* request global for exclusive use */ |
| /* odd numbered actions get read access (get_sym,data,fra_order) 3 */ | /* odd numbered actions get read access (get_sym,data,fra_order) 3 */ |
| /* even ones read/write access (set_sym,kill_sym) 1 */ | /* even ones read/write access (set_sym,kill_sym) 1 */ |
| lock: | /* temporarily disabled |
| lock: | |
| */ | |
| if (action == get_sym) { | if (action == get_sym) { |
| tfast0: | tfast0: |
| gbl_lock (g, 3); | |
| if (lonelyflag == FALSE) locking (filedes, 3, 0L); | |
| if (tryfast) goto tfast1; /* try again last block */ | if (g->fast_path > 0) { |
| goto tfast1; /* try again last block */ | |
| } | |
| blknbr = oldblk = ROOT; /* start with ROOT block */ | blknbr = g->last_block = ROOT; /* start with ROOT block */ |
| for (;;) { | for (;;) { |
| tfast1: | |
| gbl_read_block (g, blknbr, block); | |
| /* temporarily disabled | |
| tfast2: | |
| */ | |
| if ((typ = block[BTYP]) == DATA) { /* scan data block: here we test for equality only */ | |
| offset = UNSIGN (block[OFFS]) * 256 + | |
| UNSIGN (block[OFFS + 1]); | |
| j = UNSIGN (block[0]); | |
| i = 0; | |
| tfast1: | stcpy0 (key1, &block[2], j); /* get first key */ |
| lseek (filedes, (long) blknbr * (long) (BLOCKLEN), 0); | |
| read (filedes, block, BLOCKLEN); | |
| tfast2: | |
| if ((typ = block[BTYP]) == DATA) { /* scan data block: here we test for equality only */ | |
| offset = UNSIGN (block[OFFS]) * 256 + | |
| UNSIGN (block[OFFS + 1]); | |
| j = UNSIGN (block[0]); | |
| i = 0; | |
| stcpy0 (key1, &block[2], j); /* get first key */ | |
| ch = keyl; /* ch is a register! */ | |
| while (i < offset) { | |
| j = UNSIGN (block[i++]); /* length of key - offset */ | |
| k = UNSIGN (block[i++]); /* offset into previous entry */ | |
| #ifdef VERSNEW | |
| stcpy0 (&key0[k], &block[i], j); | |
| i += j; | |
| j += k; | |
| #else | |
| j += k; | |
| while (k < j) key1[k++] = block[i++]; /* get key */ | ch = keyl; /* ch is a register! */ |
| while (i < offset) { | |
| #endif /* VERSNEW */ | j = UNSIGN (block[i++]); /* length of key - offset */ |
| k = UNSIGN (block[i++]); /* offset into previous entry */ | |
| if (j != ch) { /* keys have different length */ | |
| j += k; | |
| while (k < j) key1[k++] = block[i++]; /* get key */ | |
| if (j != ch) { /* keys have different length */ | |
| i += UNSIGN (block[i]); | |
| i++; | |
| continue; | |
| } | |
| j = ch; | |
| do { | |
| j--; | |
| } while (compactkey[j] == key1[j]); /* compare keys */ | |
| if (j < 0) { | |
| k = UNSIGN (block[i++]); | |
| stcpy0 (data, &block[i], k); /* get value */ | |
| data[k] = EOL1; /* append EOL */ | |
| goto quit; | |
| } | |
| i += UNSIGN (block[i]); | i += UNSIGN (block[i]); |
| i++; | i++; /* skip data */ |
| } | |
| continue; | |
| /* fast access failed. try normal path */ | |
| if (tryfast) { | |
| gbl_cache_miss (g); | |
| goto tfast0; | |
| } | } |
| /* key1[j]=g_EOL; */ | merr_raise (M7); |
| j = ch; | data[0] = EOL; |
| do { | goto quit; /* variable not found */ |
| j--; | } |
| } while (compactkey[j] == key1[j]); /* compare keys */ | else { |
| if (g->fast_path > 0) { | |
| if (j < 0) { | gbl_cache_miss (g); |
| goto tfast0; | |
| } | |
| if (typ == EMPTY) { | |
| k = UNSIGN (block[i++]); | if (blknbr == ROOT) { |
| stcpy0 (data, &block[i], k); /* get value */ | gbl_close (g); |
| data[k] = EOL1; /* append EOL */ | goto reopen; |
| } | |
| merr_raise (DBDGD); | |
| goto quit; | goto quit; |
| } | } |
| i += UNSIGN (block[i]); | |
| i++; /* skip data */ | |
| } | |
| /* fast access failed. try normal path */ | |
| if (tryfast) { | |
| tryfast = FALSE; | |
| goto tfast0; | |
| } | } |
| merr_raise (M7); | |
| data[0] = EOL; | |
| goto quit; /* variable not found */ | scanpblk (block, &addr, &found); |
| } | |
| else { | addr += UNSIGN (block[addr]) + 2; /* skip key */ |
| if (tryfast) { | if ((blknbr = UNSIGN (block[addr]) * 65536 + UNSIGN (block[addr + 1]) * 256 + UNSIGN (block[addr + 2])) == g->last_block) { |
| tryfast = FALSE; | |
| goto tfast0; | |
| } | |
| if (typ == EMPTY) { | |
| if (blknbr == ROOT) { | |
| close (filedes); | |
| goto reopen; | |
| } | |
| merr_raise (DBDGD); | merr_raise (DBDGD); |
| goto quit; | goto quit; |
| } | } |
| } | addr += PLEN; /* skip data */ |
| g->last_block = blknbr; | |
| scanpblk (block, &addr, &found); | g->fast_path = 1; |
| addr += UNSIGN (block[addr]) + 2; /* skip key */ | |
| if ((blknbr = UNSIGN (block[addr]) * 65536 + UNSIGN (block[addr + 1]) * 256 + UNSIGN (block[addr + 2])) == oldblk) { | |
| merr_raise (DBDGD); | |
| goto quit; | |
| } | |
| addr += PLEN; /* skip data */ | |
| oldblk = blknbr; | |
| if (merr () == INRPT) goto quit; | if (merr () == INRPT) goto quit; |
| } | } |
| } /* end of get_sym */ | } /* end of get_sym */ |
| gbl_lock (g, action & 01 ? 3 : 1); | |
| if (lonelyflag == FALSE) locking (filedes, (action & 01 ? 3 : 1), 0L); | |
| /* a KILL on an unsubscripted global deletes the entire file */ | /* a KILL on an unsubscripted global deletes the entire file */ |
| if (action == kill_sym && compactkey[0] == g_EOL) { | if (action == kill_sym && compactkey[0] == g_EOL) { |
| lseek (filedes, ROOT, 0); | /* note : UNIX does not tell other jobs that a file has been unlinked */ |
| /* note : UNIX does not tell other */ | |
| block[BTYP] = EMPTY; /* jobs that a file has been unlinked */ | |
| /* as long as they keep it open. */ | /* as long as they keep it open. */ |
| /* so we mark this global as EMPTY */ | /* so we mark this global as EMPTY */ |
| write (filedes, block, BLOCKLEN); | block[BTYP] = EMPTY; |
| if (lonelyflag == FALSE) locking (filedes, 0, 0L); /* unlock */ | gbl_write_block (g, ROOT, block); |
| close (filedes); | gbl_unlock (g); |
| gbl_close (g); | |
| olddes[inuse] = 0; | |
| oldfil[inuse][0] = NUL; | |
| usage[inuse] = 0; | |
| unlink (filnam); | unlink (filnam); |
| Line 979 tfast2: | Line 1207 tfast2: |
| k_again: /* entry point for repeated kill operations */ | k_again: /* entry point for repeated kill operations */ |
| /* scan tree for the proper position of key */ | /* scan tree for the proper position of key */ |
| blknbr = oldblk = ROOT; /* start with ROOT block */ | blknbr = g->last_block = ROOT; /* start with ROOT block */ |
| trx = (-1); | trx = (-1); |
| for (;;) { | for (;;) { |
| Line 991 k_again: /* entry point for repeated | Line 1219 k_again: /* entry point for repeated |
| traceblk[trx] = blknbr; | traceblk[trx] = blknbr; |
| traceadr[trx] = 0; | traceadr[trx] = 0; |
| lseek (filedes, (long) blknbr * (long) (BLOCKLEN), 0); | gbl_read_block (g, blknbr, block); |
| read (filedes, block, BLOCKLEN); | |
| typ = block[BTYP]; | typ = block[BTYP]; |
| if (typ == DATA) { | if (typ == DATA) { |
| Line 1005 k_again: /* entry point for repeated | Line 1231 k_again: /* entry point for repeated |
| if (typ == EMPTY) { | if (typ == EMPTY) { |
| if (blknbr == ROOT) { | if (blknbr == ROOT) { |
| close (filedes); | gbl_close (g); |
| goto reopen; | goto reopen; |
| } | } |
| Line 1019 k_again: /* entry point for repeated | Line 1245 k_again: /* entry point for repeated |
| addr += UNSIGN (block[addr]); | addr += UNSIGN (block[addr]); |
| addr += 2; /* skip key */ | addr += 2; /* skip key */ |
| if ((blknbr = UNSIGN (block[addr]) * 65536 + UNSIGN (block[addr + 1]) * 256 + UNSIGN (block[addr + 2])) == oldblk) { | if ((blknbr = UNSIGN (block[addr]) * 65536 + UNSIGN (block[addr + 1]) * 256 + UNSIGN (block[addr + 2])) == g->last_block) { |
| merr_raise (DBDGD); | merr_raise (DBDGD); |
| goto quit; | goto quit; |
| } | } |
| addr += PLEN; /* skip data */ | addr += PLEN; /* skip data */ |
| oldblk = blknbr; | g->last_block = blknbr; |
| g->fast_path = 1; | |
| } | } |
| traceadr[trx] = addr; | traceadr[trx] = addr; |
| Line 1036 k_again: /* entry point for repeated | Line 1263 k_again: /* entry point for repeated |
| datal = stlen (data); | datal = stlen (data); |
| offset = UNSIGN (block[OFFS]) * 256 + | offset = UNSIGN (block[OFFS]) * 256 + |
| UNSIGN (block[OFFS + 1]); | UNSIGN (block[OFFS + 1]); |
| if (found != 2) { /* new entry */ | if (found != 2) { /* new entry */ |
| Line 1062 k_again: /* entry point for repeated | Line 1289 k_again: /* entry point for repeated |
| } | } |
| s10: { | s10: |
| { | |
| long len; /* insert key */ | long len; /* insert key */ |
| char key0[256]; | char key0[256]; |
| Line 1160 s10: { | Line 1388 s10: { |
| } | } |
| lseek (filedes, (long) blknbr * (long) (BLOCKLEN), 0); | gbl_write_block (g, blknbr, block); |
| write (filedes, block, BLOCKLEN); | |
| if (traceadr[trx] == 0) update (filedes, compactkey, keyl); | if (traceadr[trx] == 0) update (g, compactkey, keyl); |
| break; | break; |
| } | } |
| Line 1205 s10: { | Line 1432 s10: { |
| } | } |
| else { | else { |
| /* if (j1<0) */ | |
| /* we need more space */ | /* we need more space */ |
| if ((offset - j1) > DATALIM) { | if ((offset - j1) > DATALIM) { |
| Line 1215 s10: { | Line 1441 s10: { |
| goto splitd; | goto splitd; |
| } | } |
| s20: | s20: |
| i = offset; | i = offset; |
| k = addr + olddatal; | k = addr + olddatal; |
| Line 1248 s20: | Line 1474 s20: |
| } | } |
| stcpy0 (&block[++addr], data, (long) datal); | stcpy0 (&block[++addr], data, (long) datal); |
| lseek (filedes, (long) blknbr * (long) (BLOCKLEN), 0); | |
| write (filedes, block, BLOCKLEN); | gbl_write_block (g, blknbr, block); |
| break; | break; |
| case dat: | case fra_dat: |
| data[0] = '0'; | data[0] = '0'; |
| data[1] = EOL1; | data[1] = EOL1; |
| Line 1274 s20: | Line 1501 s20: |
| /* get following entry, eventually in the next blk */ | /* get following entry, eventually in the next blk */ |
| offset = UNSIGN (block[OFFS]) * 256 + | offset = UNSIGN (block[OFFS]) * 256 + |
| UNSIGN (block[OFFS + 1]); | UNSIGN (block[OFFS + 1]); |
| if (addr >= offset) { | if (addr >= offset) { |
| if ((blknbr = UNSIGN (block[RLPTR]) * 65536 + UNSIGN (block[RLPTR + 1]) * 256 + UNSIGN (block[RLPTR + 2]))) { | if ((blknbr = UNSIGN (block[RLPTR]) * 65536 + UNSIGN (block[RLPTR + 1]) * 256 + UNSIGN (block[RLPTR + 2]))) { |
| lseek (filedes, (long) blknbr * (long) (BLOCKLEN), 0); | gbl_read_block (g, blknbr, block); |
| read (filedes, block, BLOCKLEN); | |
| j1 = UNSIGN (block[0]); | j1 = UNSIGN (block[0]); |
| i = 0; | i = 0; |
| Line 1362 s20: | Line 1588 s20: |
| goto quit; | goto quit; |
| } /* no next block */ | } /* no next block */ |
| lseek (filedes, (long) blknbr * (long) (BLOCKLEN), 0); | gbl_read_block (g, blknbr, block); |
| read (filedes, block, BLOCKLEN); | |
| scandblk (block, &addr, &found); | scandblk (block, &addr, &found); |
| } | } |
| Line 1411 s20: | Line 1636 s20: |
| while (i < keyl) if (compactkey[i++] & 01) | while (i < keyl) if (compactkey[i++] & 01) |
| j1++; | j1++; |
| i = 0; | i = 0; |
| j = 0; | j = 0; |
| k = 0; | k = 0; |
| Line 1444 s20: | Line 1669 s20: |
| while ((ch = UNSIGN (scratch[i++])) != g_EOL) { | while ((ch = UNSIGN (scratch[i++])) != g_EOL) { |
| ch0 = (ch >= SP ? (ch >> 1) : /* 'string' chars */ | ch0 = (ch >= SP ? (ch >> 1) : /* 'string' chars */ |
| (ch < 20 ? (ch >> 1) + '0' : /* 0...9 */ | (ch < 20 ? (ch >> 1) + '0' : /* 0...9 */ |
| (ch >> 1) + SP)); /* '.' or '-' */ | (ch >> 1) + SP)); /* '.' or '-' */ |
| if (ch0 == DEL) { | if (ch0 == DEL) { |
| Line 1520 s20: | Line 1745 s20: |
| goto quit; /* no next block */ | goto quit; /* no next block */ |
| } | } |
| lseek (filedes, (long) blknbr * (long) (BLOCKLEN), 0); | gbl_read_block (g, blknbr, block); |
| read (filedes, block, BLOCKLEN); | |
| addr = 0; | addr = 0; |
| offset = UNSIGN (block[OFFS]) * 256 + | offset = UNSIGN (block[OFFS]) * 256 + |
| UNSIGN (block[OFFS + 1]); | UNSIGN (block[OFFS + 1]); |
| } | } |
| } | } |
| Line 1544 s20: | Line 1768 s20: |
| goto quit; /* no next block */ | goto quit; /* no next block */ |
| } | } |
| lseek (filedes, (long) blknbr * (long) (BLOCKLEN), 0); | gbl_read_block (g, blknbr, block); |
| read (filedes, block, BLOCKLEN); | |
| addr = 0; | addr = 0; |
| } | } |
| Line 1593 s20: | Line 1816 s20: |
| while ((ch = UNSIGN (key0[i++])) != g_EOL) { | while ((ch = UNSIGN (key0[i++])) != g_EOL) { |
| ch0 = (ch >= SP ? (ch >> 1) : /* 'string' chars */ | ch0 = (ch >= SP ? (ch >> 1) : /* 'string' chars */ |
| (ch < 20 ? (ch >> 1) + '0' : /* 0...9 */ | (ch < 20 ? (ch >> 1) + '0' : /* 0...9 */ |
| (ch >> 1) + SP)); /* '.' or '-' */ | (ch >> 1) + SP)); /* '.' or '-' */ |
| if (ch0 == DEL) { | if (ch0 == DEL) { |
| Line 1670 s20: | Line 1893 s20: |
| } | } |
| ch0 = (ch >= SP ? (ch >> 1) : /* 'string' chars */ | ch0 = (ch >= SP ? (ch >> 1) : /* 'string' chars */ |
| (ch < 20 ? (ch >> 1) + '0' : /* 0...9 */ | (ch < 20 ? (ch >> 1) + '0' : /* 0...9 */ |
| (ch >> 1) + SP)); /* '.' or '-' */ | (ch >> 1) + SP)); /* '.' or '-' */ |
| if (ch0 == DEL) { | if (ch0 == DEL) { |
| Line 1715 s20: | Line 1938 s20: |
| case kill_sym: /* search and destroy */ | case kill_sym: /* search and destroy */ |
| killo: /* entry from killone section */ | killo: /* entry from killone section */ |
| offset = UNSIGN (block[OFFS]) * 256 + UNSIGN (block[OFFS + 1]); | offset = UNSIGN (block[OFFS]) * 256 + UNSIGN (block[OFFS + 1]); |
| i = 0; | i = 0; |
| Line 1754 killo: /* entry from killone section | Line 1977 killo: /* entry from killone section |
| other = traceblk[--trx]; | other = traceblk[--trx]; |
| addr = traceadr[trx]; | addr = traceadr[trx]; |
| lseek (filedes, (long) other * (long) (BLOCKLEN), 0); | gbl_read_block (g, other, block); |
| read (filedes, block, BLOCKLEN); | |
| addr += UNSIGN (block[addr]); | addr += UNSIGN (block[addr]); |
| addr += (2 + PLEN); /* skip previous entry */ | addr += (2 + PLEN); /* skip previous entry */ |
| offset = UNSIGN (block[OFFS]) * 256 + | offset = UNSIGN (block[OFFS]) * 256 + |
| UNSIGN (block[OFFS + 1]); | UNSIGN (block[OFFS + 1]); |
| traceadr[trx] = addr; | traceadr[trx] = addr; |
| if (addr < offset) break; | if (addr < offset) break; |
| traceadr[trx] = 0; | traceadr[trx] = 0; |
| traceblk[trx] = UNSIGN (block[RLPTR]) * 65536 + | traceblk[trx] = UNSIGN (block[RLPTR]) * 65536 + |
| UNSIGN (block[RLPTR + 1]) * 256 + | UNSIGN (block[RLPTR + 1]) * 256 + |
| UNSIGN (block[RLPTR + 2]); | UNSIGN (block[RLPTR + 2]); |
| } | } |
| trx = trxsav; | trx = trxsav; |
| lseek (filedes, (long) blknbr * (long) (BLOCKLEN), 0); | gbl_read_block (g, blknbr, block); |
| read (filedes, block, BLOCKLEN); | |
| offset = UNSIGN (block[OFFS]) * 256 + | offset = UNSIGN (block[OFFS]) * 256 + |
| UNSIGN (block[OFFS + 1]); | UNSIGN (block[OFFS + 1]); |
| addr = 0; | addr = 0; |
| k = UNSIGN (block[0]); | k = UNSIGN (block[0]); |
| stcpy0 (key0, &block[2], k); | stcpy0 (key0, &block[2], k); |
| Line 1868 killo: /* entry from killone section | Line 2089 killo: /* entry from killone section |
| if ((begadr == 0) && (endadr == offset)) { /* block becomes empty */ | if ((begadr == 0) && (endadr == offset)) { /* block becomes empty */ |
| long left, | long left, |
| right; | right; |
| char block0[BLOCKLEN]; | char block0[BLOCKLEN]; |
| p_empty: /* entry if pointer block goes empty */ | p_empty: /* entry if pointer block goes empty */ |
| left = UNSIGN (block[LLPTR]) * 65536 + | left = UNSIGN (block[LLPTR]) * 65536 + |
| UNSIGN (block[LLPTR + 1]) * 256 + | UNSIGN (block[LLPTR + 1]) * 256 + |
| UNSIGN (block[LLPTR + 2]); | UNSIGN (block[LLPTR + 2]); |
| right = UNSIGN (block[RLPTR]) * 65536 + | right = UNSIGN (block[RLPTR]) * 65536 + |
| UNSIGN (block[RLPTR + 1]) * 256 + | UNSIGN (block[RLPTR + 1]) * 256 + |
| UNSIGN (block[RLPTR + 2]); | UNSIGN (block[RLPTR + 2]); |
| if (left) { | if (left) { |
| lseek (filedes, (long) left * (long) (BLOCKLEN), 0); | gbl_read_block (g, left, block0); |
| read (filedes, block0, BLOCKLEN); | |
| block0[RLPTR] = block[RLPTR]; | block0[RLPTR] = block[RLPTR]; |
| block0[RLPTR + 1] = block[RLPTR + 1]; | block0[RLPTR + 1] = block[RLPTR + 1]; |
| block0[RLPTR + 2] = block[RLPTR + 2]; | block0[RLPTR + 2] = block[RLPTR + 2]; |
| lseek (filedes, (long) left * (long) (BLOCKLEN), 0); | gbl_write_block (g, left, block0); |
| write (filedes, block0, BLOCKLEN); | |
| } | } |
| if (right) { | if (right) { |
| lseek (filedes, (long) right * (long) (BLOCKLEN), 0); | gbl_read_block (g, right, block0); |
| read (filedes, block0, BLOCKLEN); | |
| block0[LLPTR] = block[LLPTR]; | block0[LLPTR] = block[LLPTR]; |
| block0[LLPTR + 1] = block[LLPTR + 1]; | block0[LLPTR + 1] = block[LLPTR + 1]; |
| block0[LLPTR + 2] = block[LLPTR + 2]; | block0[LLPTR + 2] = block[LLPTR + 2]; |
| lseek (filedes, (long) right * (long) (BLOCKLEN), 0); | gbl_write_block (g, right, block0); |
| write (filedes, block0, BLOCKLEN); | |
| } | } |
| b_free (filedes, blknbr); /* modify free list */ | b_free (g, blknbr); /* modify free list */ |
| /* delete pointer */ | /* delete pointer */ |
| /**************************/ | /**************************/ |
| Line 1921 p_empty: /* entry if pointer block goes | Line 2138 p_empty: /* entry if pointer block goes |
| blknbr = traceblk[--trx]; | blknbr = traceblk[--trx]; |
| addr = traceadr[trx]; | addr = traceadr[trx]; |
| lseek (filedes, (long) (blknbr) * (long) (BLOCKLEN), 0); | gbl_read_block (g, blknbr, block); |
| read (filedes, block, BLOCKLEN); | |
| offset = UNSIGN (block[OFFS]) * 256 + | offset = UNSIGN (block[OFFS]) * 256 + |
| UNSIGN (block[OFFS + 1]); | UNSIGN (block[OFFS + 1]); |
| freecnt = UNSIGN (block[addr]) + 2 + PLEN; | freecnt = UNSIGN (block[addr]) + 2 + PLEN; |
| /* delete key */ | /* delete key */ |
| Line 1934 p_empty: /* entry if pointer block goes | Line 2150 p_empty: /* entry if pointer block goes |
| if (blknbr == ROOT) { /* global went empty */ | if (blknbr == ROOT) { /* global went empty */ |
| lseek (filedes, 0L, 0); | |
| /* note : UNIX does not tell other */ | /* note : UNIX does not tell other */ |
| block[BTYP] = EMPTY; /* jobs that a file has been unlinked */ | block[BTYP] = EMPTY; /* jobs that a file has been unlinked */ |
| /* as long as they keep it open. */ | /* as long as they keep it open. */ |
| /* so we mark this global as EMPTY */ | /* so we mark this global as EMPTY */ |
| write (filedes, block, BLOCKLEN); | gbl_write_block (g, 0L, block); |
| close (filedes); | |
| gbl_close (g); | |
| unlink (filnam); | unlink (filnam); |
| if (lonelyflag == FALSE) locking (filedes, 0, 0L); /* unlock */ | gbl_unlock (g); |
| olddes[inuse] = 0; | olddes[inuse] = 0; |
| oldfil[inuse][0] = NUL; | oldfil[inuse][0] = NUL; |
| Line 1966 p_empty: /* entry if pointer block goes | Line 2183 p_empty: /* entry if pointer block goes |
| for (i = offset; i < offset + freecnt; block[i++] = 0); | for (i = offset; i < offset + freecnt; block[i++] = 0); |
| lseek (filedes, (long) (blknbr) * (long) (BLOCKLEN), 0); | gbl_write_block (g, blknbr, block); |
| write (filedes, block, BLOCKLEN); | |
| if (addr == 0) { /* update of pointer */ | if (addr == 0) { /* update of pointer */ |
| traceadr[trx] = 0; | traceadr[trx] = 0; |
| update (filedes, &block[2], (long) UNSIGN (block[0])); | update (g, &block[2], (long) UNSIGN (block[0])); |
| } | } |
| trx = trxsav; | trx = trxsav; |
| Line 1997 p_empty: /* entry if pointer block goes | Line 2213 p_empty: /* entry if pointer block goes |
| j = block[begadr + 1]; | j = block[begadr + 1]; |
| k = 0; | k = 0; |
| if (begadr) | if (begadr) |
| while (key0[k] == key1[k]) | while (key0[k] == key1[k]) |
| k++; /* new key_offset */ | k++; /* new key_offset */ |
| if (k < j) { | if (k < j) { |
| ch = j - k; /* space requirement */ | ch = j - k; /* space requirement */ |
| block[begadr] = i + ch; /* new key_length */ | block[begadr] = i + ch; /* new key_length */ |
| block[begadr + 1] = k; /* new key_offset */ | block[begadr + 1] = k; /* new key_offset */ |
| i = offset; | i = offset; |
| j = i + ch; | j = i + ch; |
| offset = j; | offset = j; |
| begadr++; | begadr++; |
| while (i > begadr) | while (i > begadr) |
| block[j--] = block[i--]; | block[j--] = block[i--]; |
| stcpy0 (&block[begadr + 1], &key0[k], ch); | stcpy0 (&block[begadr + 1], &key0[k], ch); |
| } | } |
| } | } |
| block[OFFS] = offset / 256; | block[OFFS] = offset / 256; |
| block[OFFS + 1] = offset % 256; | block[OFFS + 1] = offset % 256; |
| lseek (filedes, (long) blknbr * (long) (BLOCKLEN), 0); | |
| write (filedes, block, BLOCKLEN); | gbl_write_block (g, blknbr, block); |
| if (addr < 3) { /* update of pointer */ | if (addr < 3) { /* update of pointer */ |
| traceadr[trx] = 0; | traceadr[trx] = 0; |
| update (filedes, &block[2], (long) UNSIGN (block[0])); | update (g, &block[2], (long) UNSIGN (block[0])); |
| } | } |
| } | } |
| Line 2026 p_empty: /* entry if pointer block goes | Line 2243 p_empty: /* entry if pointer block goes |
| break; | break; |
| zinv: | zinv: |
| { | { |
| long len; | long len; |
| Line 2040 zinv: | Line 2257 zinv: |
| data[0] = EOL1; | data[0] = EOL1; |
| goto quit; | goto quit; |
| } /* no previous block */ | } /* no previous block */ |
| lseek (filedes, (long) blknbr * (long) (BLOCKLEN), 0); | gbl_read_block (g, blknbr, block); |
| read (filedes, block, BLOCKLEN); | |
| addr = UNSIGN (block[OFFS]) * 256 + | addr = UNSIGN (block[OFFS]) * 256 + |
| UNSIGN (block[OFFS + 1]); | UNSIGN (block[OFFS + 1]); |
| } | } |
| Line 2120 zinv: | Line 2336 zinv: |
| while ((ch = UNSIGN (scratch[i++])) != g_EOL) { | while ((ch = UNSIGN (scratch[i++])) != g_EOL) { |
| ch0 = (ch >= SP ? (ch >> 1) : /* 'string' chars */ | ch0 = (ch >= SP ? (ch >> 1) : /* 'string' chars */ |
| (ch < 20 ? (ch >> 1) + '0' : /* 0...9 */ | (ch < 20 ? (ch >> 1) + '0' : /* 0...9 */ |
| (ch >> 1) + SP)); /* '.' or '-' */ | (ch >> 1) + SP)); /* '.' or '-' */ |
| if (ch0 == DEL) { | if (ch0 == DEL) { |
| Line 2166 zinv: | Line 2382 zinv: |
| case zdata: /* nonstandard data function */ | case zdata: /* nonstandard data function */ |
| { | { |
| long counties[128]; | long counties[128]; |
| char key0[256]; | char key0[256]; |
| int icnt, icnt0, len; | int icnt, icnt0, len; |
| i = 0; | i = 0; |
| while (i < 128) counties[i++] = 0L; /* init count; */ | while (i < 128) counties[i++] = 0L; /* init count; */ |
| if (found == 2) { /* ... advance to next entry */ | if (found == 2) { /* ... advance to next entry */ |
| addr += UNSIGN (block[addr]); | addr += UNSIGN (block[addr]); |
| addr += 2; /* skip key */ | addr += 2; /* skip key */ |
| addr += UNSIGN (block[addr]); | addr += UNSIGN (block[addr]); |
| addr++; /* skip data */ | addr++; /* skip data */ |
| counties[0] = 1L; | counties[0] = 1L; |
| } | } |
| offset = UNSIGN (block[OFFS]) * 256 + UNSIGN (block[OFFS + 1]); | offset = UNSIGN (block[OFFS]) * 256 + UNSIGN (block[OFFS + 1]); |
| icnt = 0; | icnt = 0; |
| i = 0; | i = 0; |
| while ((ch = compactkey[i++]) != g_EOL) { | while ((ch = compactkey[i++]) != g_EOL) { |
| if (ch & 01) { | |
| icnt++; | |
| } | |
| if (ch & 01) { | |
| icnt++; | |
| } | } |
| len = i - 1; | } |
| i = 0; | |
| while (i < addr) { /* compute offset complete key */ | len = i - 1; |
| i = 0; | |
| while (i < addr) { /* compute offset complete key */ | |
| icnt0 = UNSIGN (block[i++]); | icnt0 = UNSIGN (block[i++]); |
| icnt0 += (j = UNSIGN (block[i++])); | icnt0 += (j = UNSIGN (block[i++])); |
| while (j < icnt0) key0[j++] = block[i++]; | while (j < icnt0) key0[j++] = block[i++]; |
| key0[j] = g_EOL; | key0[j] = g_EOL; |
| i += UNSIGN (block[i]); | i += UNSIGN (block[i]); |
| i++; /* skip data */ | i++; /* skip data */ |
| } | } |
| for (;;) { /* is it still a descendant ??? */ | for (;;) { /* is it still a descendant ??? */ |
| if (addr >= offset) { /* look in next block */ | if (addr >= offset) { /* look in next block */ |
| if ((blknbr = UNSIGN (block[RLPTR]) * 65536 + UNSIGN (block[RLPTR + 1]) * 256 + UNSIGN (block[RLPTR + 2])) == 0) { | if ((blknbr = UNSIGN (block[RLPTR]) * 65536 + UNSIGN (block[RLPTR + 1]) * 256 + UNSIGN (block[RLPTR + 2])) == 0) { |
| break; /* no next block */ | break; /* no next block */ |
| } | } |
| lseek (filedes, (long) blknbr * (long) (BLOCKLEN), 0); | gbl_read_block (g, blknbr, block); |
| read (filedes, block, BLOCKLEN); | |
| addr = 0; | addr = 0; |
| offset = UNSIGN (block[OFFS]) * 256 + | offset = UNSIGN (block[OFFS]) * 256 + |
| UNSIGN (block[OFFS + 1]); | UNSIGN (block[OFFS + 1]); |
| } | } |
| i = UNSIGN (block[addr++]); | i = UNSIGN (block[addr++]); |
| i += (j = UNSIGN (block[addr++])); | i += (j = UNSIGN (block[addr++])); |
| while (j < i) key0[j++] = block[addr++]; | while (j < i) key0[j++] = block[addr++]; |
| addr += UNSIGN (block[addr]); | addr += UNSIGN (block[addr]); |
| addr++; /* skip data */ | addr++; /* skip data */ |
| icnt0 = 0; | icnt0 = 0; |
| i = 0; | i = 0; |
| while (i < j) if (key0[i++] & 01) | while (i < j) if (key0[i++] & 01) |
| icnt0++; | icnt0++; |
| if (icnt0 <= icnt) break; | if (icnt0 <= icnt) break; |
| i = 0; | i = 0; |
| while (i < len) { | while (i < len) { |
| if (key0[i] != compactkey[i]) break; | if (key0[i] != compactkey[i]) break; |
| i++; | i++; |
| } | } |
| if (i < len) break; | if (i < len) break; |
| counties[icnt0 - icnt]++; | counties[icnt0 - icnt]++; |
| } | } |
| i = 128; | i = 128; |
| while (counties[--i] == 0L); | while (counties[--i] == 0L); |
| lintstr (data, counties[0]); | lintstr (data, counties[0]); |
| j = 1; | j = 1; |
| tmp1[0] = ','; | tmp1[0] = ','; |
| while (j <= i) { | while (j <= i) { |
| lintstr (&tmp1[1], counties[j++]); | lintstr (&tmp1[1], counties[j++]); |
| stcat (data, tmp1); | stcat (data, tmp1); |
| } | |
| } | } |
| } | |
| break; | break; |
| case getinc: | case getinc: |
| { | { |
| int setopsav; | int setopsav; |
| setopsav = setop; | setopsav = setop; |
| setop = '+'; | setop = '+'; |
| data[0] = '1'; | data[0] = '1'; |
| data[1] = EOL; | data[1] = EOL; |
| global (set_sym, key, data); | global (set_sym, key, data); |
| setop = setopsav; | setop = setopsav; |
| return; | return; |
| } | } |
| case killone: | case killone: |
| { | |
| { | if (found == 2) goto killo; /* entry found use normal kill routine */ |
| if (found == 2) goto killo; /* entry found use normal kill routine */ | |
| goto quit; | goto quit; |
| } | } |
| case merge_sym: | |
| printf("MERGE NOT IMPLEMENTED FOR GLOBALS\n"); | |
| #ifdef DEBUG_GBL | |
| int loop; | |
| printf ("DEBUG MERGE: "); | |
| printf ("[key] is ["); | |
| for (loop = 0; key[loop] != EOL; loop++) printf ("%c", (key[loop] == DELIM) ? '!' : key[loop]); | |
| printf ("]\r\n"); | |
| printf ("[data] is ["); | |
| for(loop = 0; data[loop] != EOL; loop++) printf ("%c", (data[loop] == DELIM) ? '!' : data[loop]); | |
| printf("]\r\n"); | |
| #endif | |
| return; | |
| default: | default: |
| Line 2337 quit: | Line 2528 quit: |
| /* clean things up */ | /* clean things up */ |
| lseek (filedes, ROOT, 0); | lseek (g->fd, hdr_offset + ROOT, SEEK_SET); |
| gbl_unlock (g); | |
| if (lonelyflag == FALSE) locking (filedes, 0, 0L); /* unlock */ | |
| return; | return; |
| Line 2351 splitd: /* split data block in two se | Line 2541 splitd: /* split data block in two se |
| /* 'addr' there I would like to insert, if possible (which is not) */ | /* 'addr' there I would like to insert, if possible (which is not) */ |
| /* 'offset' filled up to this limit */ | /* 'offset' filled up to this limit */ |
| getnewblk (filedes, &newblk); /* get a new block */ | getnewblk (g, &newblk); /* get a new block */ |
| /* if we have to insert at the begin or end of a block */ | /* if we have to insert at the begin or end of a block */ |
| /* we don't split - we just start a new block */ | /* we don't split - we just start a new block */ |
| Line 2359 splitd: /* split data block in two se | Line 2549 splitd: /* split data block in two se |
| if (addr >= offset) { | if (addr >= offset) { |
| long right, | long right, |
| right1, | right1, |
| right2; | right2; |
| right = UNSIGN (block[RLPTR]); | right = UNSIGN (block[RLPTR]); |
| right1 = UNSIGN (block[RLPTR + 1]); | right1 = UNSIGN (block[RLPTR + 1]); |
| Line 2369 splitd: /* split data block in two se | Line 2559 splitd: /* split data block in two se |
| block[RLPTR + 1] = newblk % 65536 / 256; | block[RLPTR + 1] = newblk % 65536 / 256; |
| block[RLPTR + 2] = newblk % 256; | block[RLPTR + 2] = newblk % 256; |
| lseek (filedes, (long) blknbr * (long) (BLOCKLEN), 0); | gbl_write_block (g, blknbr, block); |
| write (filedes, block, BLOCKLEN); | |
| block[RLPTR] = right; | block[RLPTR] = right; |
| block[RLPTR + 1] = right1; | block[RLPTR + 1] = right1; |
| Line 2382 splitd: /* split data block in two se | Line 2571 splitd: /* split data block in two se |
| addr = 0; | addr = 0; |
| blknbr = newblk; | blknbr = newblk; |
| insert (filedes, compactkey, keyl, newblk); | insert (g, compactkey, keyl, newblk); |
| /* up-date LL-PTR of RL-block */ | /* up-date LL-PTR of RL-block */ |
| if ((other = right * 65536 + right1 * 256 + right2)) { | if ((other = right * 65536 + right1 * 256 + right2)) { |
| char block0[BLOCKLEN]; | char block0[BLOCKLEN]; |
| lseek (filedes, (long) other * (long) (BLOCKLEN), 0); | gbl_read_block (g, other, block0); |
| read (filedes, block0, BLOCKLEN); | |
| block0[LLPTR] = blknbr / 65536; | block0[LLPTR] = blknbr / 65536; |
| block0[LLPTR + 1] = blknbr % 65536 / 256; | block0[LLPTR + 1] = blknbr % 65536 / 256; |
| block0[LLPTR + 2] = blknbr % 256; | block0[LLPTR + 2] = blknbr % 256; |
| lseek (filedes, (long) other * (long) (BLOCKLEN), 0); | gbl_write_block (g, other, block0); |
| write (filedes, block0, BLOCKLEN); | |
| } | } |
| goto spltex; | goto spltex; |
| Line 2415 splitd: /* split data block in two se | Line 2602 splitd: /* split data block in two se |
| block[LLPTR + 1] = newblk % 65536 / 256; | block[LLPTR + 1] = newblk % 65536 / 256; |
| block[LLPTR + 2] = newblk % 256; | block[LLPTR + 2] = newblk % 256; |
| lseek (filedes, (long) blknbr * (long) (BLOCKLEN), 0); | gbl_write_block (g, blknbr, block); |
| write (filedes, block, BLOCKLEN); | |
| block[LLPTR] = left; | block[LLPTR] = left; |
| block[LLPTR + 1] = left1; | block[LLPTR + 1] = left1; |
| block[LLPTR + 2] = left2; | block[LLPTR + 2] = left2; |
| Line 2428 splitd: /* split data block in two se | Line 2614 splitd: /* split data block in two se |
| blknbr = newblk; | blknbr = newblk; |
| traceadr[trx] = (-1); /* inhibit second update of pointers */ | traceadr[trx] = (-1); /* inhibit second update of pointers */ |
| insert (filedes, compactkey, keyl, newblk); | insert (g, compactkey, keyl, newblk); |
| if (addr < 3) { /* update of pointer */ | if (addr < 3) { /* update of pointer */ |
| traceadr[trx] = 0; | traceadr[trx] = 0; |
| update (filedes, compactkey, keyl); | update (g, compactkey, keyl); |
| } | } |
| /* other is ***always*** zero !!! | /* other is ***always*** zero !!! |
| * if (other=left*65536+left1*256+left2) up-date RL-PTR of LL-block | * if (other=left*65536+left1*256+left2) up-date RL-PTR of LL-block |
| * { char block0[BLOCKLEN]; | * { char block0[BLOCKLEN]; |
| * lseek(filedes,(long)other*(long)(BLOCKLEN),0); | * lseek(filedes,(long)other*(long)(BLOCKLEN),0); |
| * read(filedes,block0,BLOCKLEN); | * read(filedes,block0,BLOCKLEN); |
| * block0[RLPTR ]=blknbr/65536; | * block0[RLPTR ]=blknbr/65536; |
| * block0[RLPTR+1]=blknbr%65536/256; | * block0[RLPTR+1]=blknbr%65536/256; |
| * block0[RLPTR+2]=blknbr%256; | * block0[RLPTR+2]=blknbr%256; |
| * lseek(filedes,(long)other*(long)(BLOCKLEN),0); | * lseek(filedes,(long)other*(long)(BLOCKLEN),0); |
| * write(filedes,block0,BLOCKLEN); | * write(filedes,block0,BLOCKLEN); |
| * } | * } |
| */ | */ |
| goto spltex; | goto spltex; |
| Line 2529 splitd: /* split data block in two se | Line 2715 splitd: /* split data block in two se |
| /* update rightlink and leftlink pointers */ | /* update rightlink and leftlink pointers */ |
| other = UNSIGN (block[RLPTR]) * 65536 + | other = UNSIGN (block[RLPTR]) * 65536 + |
| UNSIGN (block[RLPTR + 1]) * 256 + | UNSIGN (block[RLPTR + 1]) * 256 + |
| UNSIGN (block[RLPTR + 2]); | UNSIGN (block[RLPTR + 2]); |
| block0[RLPTR] = block[RLPTR]; | block0[RLPTR] = block[RLPTR]; |
| block0[RLPTR + 1] = block[RLPTR + 1]; | block0[RLPTR + 1] = block[RLPTR + 1]; |
| block0[RLPTR + 2] = block[RLPTR + 2]; | block0[RLPTR + 2] = block[RLPTR + 2]; |
| Line 2541 splitd: /* split data block in two se | Line 2727 splitd: /* split data block in two se |
| block0[LLPTR + 1] = blknbr % 65536 / 256; | block0[LLPTR + 1] = blknbr % 65536 / 256; |
| block0[LLPTR + 2] = blknbr % 256; | block0[LLPTR + 2] = blknbr % 256; |
| lseek (filedes, (long) (newblk) * (long) (BLOCKLEN), 0); | gbl_write_block (g, newblk, block0); |
| write (filedes, block0, BLOCKLEN); | |
| offset = limit; | offset = limit; |
| /* insert new block in pointer structure */ | /* insert new block in pointer structure */ |
| insert (filedes, &block0[2], (long) UNSIGN (block0[0]), newblk); | insert (g, &block0[2], (long) UNSIGN (block0[0]), newblk); |
| /* up-date LL-PTR of RL-block */ | /* up-date LL-PTR of RL-block */ |
| if (other != 0) { | if (other != 0) { |
| lseek (filedes, (long) other * (long) (BLOCKLEN), 0); | gbl_read_block (g, other, block0); |
| read (filedes, block0, BLOCKLEN); | |
| block0[LLPTR] = newblk / 65536; | block0[LLPTR] = newblk / 65536; |
| block0[LLPTR + 1] = newblk % 65536 / 256; | block0[LLPTR + 1] = newblk % 65536 / 256; |
| block0[LLPTR + 2] = newblk % 256; | block0[LLPTR + 2] = newblk % 256; |
| lseek (filedes, (long) other * (long) (BLOCKLEN), 0); | gbl_write_block (g, other, block0); |
| write (filedes, block0, BLOCKLEN); | |
| } | } |
| Line 2569 splitd: /* split data block in two se | Line 2752 splitd: /* split data block in two se |
| /* save old block away and make new block the current block */ | /* save old block away and make new block the current block */ |
| /* update rightlink and leftlink pointers */ | /* update rightlink and leftlink pointers */ |
| other = UNSIGN (block[RLPTR]) * 65536 + | other = UNSIGN (block[RLPTR]) * 65536 + |
| UNSIGN (block[RLPTR + 1]) * 256 + | UNSIGN (block[RLPTR + 1]) * 256 + |
| UNSIGN (block[RLPTR + 2]); | UNSIGN (block[RLPTR + 2]); |
| block0[RLPTR] = block[RLPTR]; | block0[RLPTR] = block[RLPTR]; |
| block0[RLPTR + 1] = block[RLPTR + 1]; | block0[RLPTR + 1] = block[RLPTR + 1]; |
| block0[RLPTR + 2] = block[RLPTR + 2]; | block0[RLPTR + 2] = block[RLPTR + 2]; |
| Line 2581 splitd: /* split data block in two se | Line 2764 splitd: /* split data block in two se |
| block0[LLPTR + 1] = blknbr % 65536 / 256; | block0[LLPTR + 1] = blknbr % 65536 / 256; |
| block0[LLPTR + 2] = blknbr % 256; | block0[LLPTR + 2] = blknbr % 256; |
| lseek (filedes, (long) blknbr * (long) (BLOCKLEN), 0); | gbl_write_block (g, blknbr, block); |
| write (filedes, block, BLOCKLEN); | |
| stcpy0 (block, block0, (long) BLOCKLEN); | stcpy0 (block, block0, (long) BLOCKLEN); |
| traceadr[trx] = (addr -= limit); | traceadr[trx] = (addr -= limit); |
| traceblk[trx] = (blknbr = newblk); | traceblk[trx] = (blknbr = newblk); |
| /* insert new block in pointer structure */ | /* insert new block in pointer structure */ |
| insert (filedes, &block0[2], (long) UNSIGN (block0[0]), newblk); | insert (g, &block0[2], (long) UNSIGN (block0[0]), newblk); |
| /* up-date LL-PTR of RL-block */ | /* up-date LL-PTR of RL-block */ |
| if (other != 0) { | if (other != 0) { |
| lseek (filedes, (long) other * (long) (BLOCKLEN), 0); | gbl_read_block (g, other, block0); |
| read (filedes, block0, BLOCKLEN); | |
| block0[LLPTR] = newblk / 65536; | block0[LLPTR] = newblk / 65536; |
| block0[LLPTR + 1] = newblk % 65536 / 256; | block0[LLPTR + 1] = newblk % 65536 / 256; |
| block0[LLPTR + 2] = newblk % 256; | block0[LLPTR + 2] = newblk % 256; |
| lseek (filedes, (long) other * (long) (BLOCKLEN), 0); | gbl_write_block (g, other, block0); |
| write (filedes, block0, BLOCKLEN); | |
| } | } |
| Line 2629 spltex: | Line 2810 spltex: |
| * 'addr' there I would like to insert, if possible (which is not) | * 'addr' there I would like to insert, if possible (which is not) |
| * 'offset' filled up to this limit | * 'offset' filled up to this limit |
| */ | */ |
| static void splitp (short filedes, char *block, long *addr, long *offs, unsigned long *blknbr) | static void splitp (global_handle *g, char *block, long *addr, long *offs, unsigned long *blknbr) |
| { | { |
| char block0[BLOCKLEN]; | char block0[BLOCKLEN]; |
| Line 2637 static void splitp (short filedes, char | Line 2818 static void splitp (short filedes, char |
| unsigned long newblk; | unsigned long newblk; |
| unsigned long other; | unsigned long other; |
| register int i, j; | register int i, j; |
| getnewblk (filedes, &newblk); /* get a new block */ | getnewblk (g, &newblk); /* get a new block */ |
| if (*blknbr == ROOT) { /* ROOT overflow is special */ | if (*blknbr == ROOT) { /* ROOT overflow is special */ |
| Line 2665 static void splitp (short filedes, char | Line 2846 static void splitp (short filedes, char |
| /* update number of blocks ! */ | /* update number of blocks ! */ |
| i = UNSIGN (block0[NRBLK]) * 65536 + | i = UNSIGN (block0[NRBLK]) * 65536 + |
| UNSIGN (block0[NRBLK + 1]) * 256 + | UNSIGN (block0[NRBLK + 1]) * 256 + |
| UNSIGN (block0[NRBLK + 2]) + 1; | UNSIGN (block0[NRBLK + 2]) + 1; |
| block0[NRBLK] = i / 65536; | block0[NRBLK] = i / 65536; |
| block0[NRBLK + 1] = i % 65536 / 256; | block0[NRBLK + 1] = i % 65536 / 256; |
| block0[NRBLK + 2] = i % 256; | block0[NRBLK + 2] = i % 256; |
| block0[BTYP] = POINTER; | block0[BTYP] = POINTER; |
| lseek (filedes, ROOT, 0); | gbl_write_block (g, ROOT, block0); |
| write (filedes, block0, BLOCKLEN); | |
| /* shift trace_stack */ | /* shift trace_stack */ |
| j = trx++; | j = trx++; |
| Line 2691 static void splitp (short filedes, char | Line 2871 static void splitp (short filedes, char |
| traceblk[1] = newblk; | traceblk[1] = newblk; |
| *blknbr = newblk; | *blknbr = newblk; |
| getnewblk (filedes, &newblk); /* get a new block */ | getnewblk (g, &newblk); /* get a new block */ |
| } | } |
| Line 2733 static void splitp (short filedes, char | Line 2913 static void splitp (short filedes, char |
| /* update rightlink and leftlink pointers */ | /* update rightlink and leftlink pointers */ |
| other = UNSIGN (block[RLPTR]) * 65536 + | other = UNSIGN (block[RLPTR]) * 65536 + |
| UNSIGN (block[RLPTR + 1]) * 256 + | UNSIGN (block[RLPTR + 1]) * 256 + |
| UNSIGN (block[RLPTR + 2]); | UNSIGN (block[RLPTR + 2]); |
| block0[RLPTR] = block[RLPTR]; | block0[RLPTR] = block[RLPTR]; |
| block0[RLPTR + 1] = block[RLPTR + 1]; | block0[RLPTR + 1] = block[RLPTR + 1]; |
| block0[RLPTR + 2] = block[RLPTR + 2]; | block0[RLPTR + 2] = block[RLPTR + 2]; |
| Line 2745 static void splitp (short filedes, char | Line 2925 static void splitp (short filedes, char |
| block0[LLPTR + 1] = (*blknbr) % 65536 / 256; | block0[LLPTR + 1] = (*blknbr) % 65536 / 256; |
| block0[LLPTR + 2] = (*blknbr) % 256; | block0[LLPTR + 2] = (*blknbr) % 256; |
| lseek (filedes, (long) (newblk) * (long) (BLOCKLEN), 0); | gbl_write_block (g, newblk, block0); |
| write (filedes, block0, BLOCKLEN); | |
| (*offs) = limit; | (*offs) = limit; |
| insert (filedes, &block0[2], (long) UNSIGN (block0[0]), newblk); | insert (g, &block0[2], (long) UNSIGN (block0[0]), newblk); |
| /* up-date LL-PTR of RL-block */ | /* up-date LL-PTR of RL-block */ |
| if (other != 0) { | if (other != 0) { |
| lseek (filedes, (long) other * (long) (BLOCKLEN), 0); | gbl_read_block (g, other, block0); |
| read (filedes, block0, BLOCKLEN); | |
| block0[LLPTR] = newblk / 65536; | block0[LLPTR] = newblk / 65536; |
| block0[LLPTR + 1] = newblk % 65536 / 256; | block0[LLPTR + 1] = newblk % 65536 / 256; |
| block0[LLPTR + 2] = newblk % 256; | block0[LLPTR + 2] = newblk % 256; |
| lseek (filedes, (long) other * (long) (BLOCKLEN), 0); | gbl_write_block (g, other, block0); |
| write (filedes, block0, BLOCKLEN); | |
| } | } |
| Line 2772 static void splitp (short filedes, char | Line 2949 static void splitp (short filedes, char |
| /* update rightlink and leftlink pointers */ | /* update rightlink and leftlink pointers */ |
| other = UNSIGN (block[RLPTR]) * 65536 + | other = UNSIGN (block[RLPTR]) * 65536 + |
| UNSIGN (block[RLPTR + 1]) * 256 + | UNSIGN (block[RLPTR + 1]) * 256 + |
| UNSIGN (block[RLPTR + 2]); | UNSIGN (block[RLPTR + 2]); |
| block0[RLPTR] = block[RLPTR]; | block0[RLPTR] = block[RLPTR]; |
| block0[RLPTR + 1] = block[RLPTR + 1]; | block0[RLPTR + 1] = block[RLPTR + 1]; |
| Line 2787 static void splitp (short filedes, char | Line 2964 static void splitp (short filedes, char |
| (*addr) -= limit; | (*addr) -= limit; |
| (*offs) -= limit; | (*offs) -= limit; |
| gbl_write_block (g, *blknbr, block); | |
| lseek (filedes, (long) (*blknbr) * (long) (BLOCKLEN), 0); | |
| write (filedes, block, BLOCKLEN); | |
| stcpy0 (block, block0, (long) BLOCKLEN); | stcpy0 (block, block0, (long) BLOCKLEN); |
| (*blknbr) = newblk; | (*blknbr) = newblk; |
| insert (filedes, &block0[2], (long) UNSIGN (block0[0]), newblk); | insert (g, &block0[2], (long) UNSIGN (block0[0]), newblk); |
| /* up-date LL-PTR of RL-block */ | /* up-date LL-PTR of RL-block */ |
| if (other != 0) { | if (other != 0) { |
| lseek (filedes, (long) other * (long) (BLOCKLEN), 0); | gbl_read_block (g, other, block0); |
| read (filedes, block0, BLOCKLEN); | |
| block0[LLPTR] = newblk / 65536; | block0[LLPTR] = newblk / 65536; |
| block0[LLPTR + 1] = newblk % 65536 / 256; | block0[LLPTR + 1] = newblk % 65536 / 256; |
| block0[LLPTR + 2] = newblk % 256; | block0[LLPTR + 2] = newblk % 256; |
| lseek (filedes, (long) other * (long) (BLOCKLEN), 0); | gbl_write_block (g, other, block0); |
| write (filedes, block0, BLOCKLEN); | |
| } | } |
| Line 2822 static void splitp (short filedes, char | Line 2997 static void splitp (short filedes, char |
| * ins_key: key to be inserted | * ins_key: key to be inserted |
| * keyl: length of that key | * keyl: length of that key |
| */ | */ |
| static void update (short filedes, char *ins_key, long keyl) | static void update (global_handle *g, char *ins_key, long keyl) |
| { | { |
| long offset; | long offset; |
| long addr; | long addr; |
| unsigned long blknbr; | unsigned long blknbr; |
| char block[BLOCKLEN]; | char block[BLOCKLEN]; |
| long i, j, k; | long i, j, k; |
| while (traceadr[trx] == 0) { /* update of pointer blocks necessary */ | while (traceadr[trx] == 0) { /* update of pointer blocks necessary */ |
| if (--trx < 0) break; | if (--trx < 0) break; |
| blknbr = traceblk[trx]; | blknbr = traceblk[trx]; |
| addr = traceadr[trx]; | addr = traceadr[trx]; |
| lseek (filedes, (long) blknbr * (long) (BLOCKLEN), 0); | gbl_read_block (g, blknbr, block); |
| read (filedes, block, BLOCKLEN); | |
| { | { |
| long oldkeyl; | long oldkeyl; |
| Line 2849 static void update (short filedes, char | Line 3023 static void update (short filedes, char |
| j = oldkeyl - keyl; | j = oldkeyl - keyl; |
| offset = UNSIGN (block[OFFS]) * 256 + | offset = UNSIGN (block[OFFS]) * 256 + |
| UNSIGN (block[OFFS + 1]); | UNSIGN (block[OFFS + 1]); |
| if (j > 0) { /* surplus space */ | if (j > 0) { /* surplus space */ |
| Line 2865 static void update (short filedes, char | Line 3039 static void update (short filedes, char |
| else if (j < 0) { /* we need more space */ | else if (j < 0) { /* we need more space */ |
| /* block too small */ | /* block too small */ |
| if ((offset - j) > DATALIM) splitp (filedes, block, &addr, &offset, &blknbr); | if ((offset - j) > DATALIM) splitp (g, block, &addr, &offset, &blknbr); |
| i = offset; | i = offset; |
| offset -= j; | offset -= j; |
| Line 2888 static void update (short filedes, char | Line 3062 static void update (short filedes, char |
| while (i < keyl) block[j++] = ins_key[i++]; | while (i < keyl) block[j++] = ins_key[i++]; |
| /* block pointed to remains the same */ | /* block pointed to remains the same */ |
| lseek (filedes, (long) blknbr * (long) (BLOCKLEN), 0); | gbl_write_block (g, blknbr, block); |
| write (filedes, block, BLOCKLEN); | |
| } | } |
| lseek (filedes, (long) blknbr * (long) (BLOCKLEN), 0); | gbl_read_block (g, blknbr, block); |
| read (filedes, block, BLOCKLEN); | |
| } | } |
| Line 2909 static void update (short filedes, char | Line 3080 static void update (short filedes, char |
| * key_len: length of that key | * key_len: length of that key |
| * blknbr: key points to this block | * blknbr: key points to this block |
| */ | */ |
| static void insert (int filedes, char *ins_key, long key_len, unsigned long blknbr) /* insert pointer */ | static void insert (global_handle *g, char *ins_key, long key_len, unsigned long blknbr) /* insert pointer */ |
| { | { |
| unsigned long blk; | unsigned long blk; |
| char block[BLOCKLEN]; | char block[BLOCKLEN]; |
| Line 2918 static void insert (int filedes, char *i | Line 3089 static void insert (int filedes, char *i |
| long needed; | long needed; |
| long addr; | long addr; |
| register int i, k; | register int i, k; |
| trxsav = trx--; | trxsav = trx--; |
| blk = traceblk[trx]; | blk = traceblk[trx]; |
| addr = traceadr[trx]; | addr = traceadr[trx]; |
| lseek (filedes, (long) (blk) * (long) (BLOCKLEN), 0); | gbl_read_block (g, blk, block); |
| read (filedes, block, BLOCKLEN); | |
| offset = UNSIGN (block[OFFS]) * 256 + | offset = UNSIGN (block[OFFS]) * 256 + |
| UNSIGN (block[OFFS + 1]); | UNSIGN (block[OFFS + 1]); |
| if (traceadr[trx + 1] != (-1)) { | if (traceadr[trx + 1] != (-1)) { |
| addr += UNSIGN (block[addr]); | addr += UNSIGN (block[addr]); |
| Line 2936 static void insert (int filedes, char *i | Line 3106 static void insert (int filedes, char *i |
| needed = key_len + 2 + PLEN; | needed = key_len + 2 + PLEN; |
| if ((offset + needed) > DATALIM) splitp (filedes, block, &addr, &offset, &blk); | if ((offset + needed) > DATALIM) splitp (g, block, &addr, &offset, &blk); |
| /* insert key */ | /* insert key */ |
| i = (offset += needed); | i = (offset += needed); |
| Line 2960 static void insert (int filedes, char *i | Line 3130 static void insert (int filedes, char *i |
| block[i++] = blknbr % 65536 / 256; | block[i++] = blknbr % 65536 / 256; |
| block[i] = blknbr % 256; | block[i] = blknbr % 256; |
| lseek (filedes, (long) (blk) * (long) (BLOCKLEN), 0); | gbl_write_block (g, blk, block); |
| write (filedes, block, BLOCKLEN); | |
| trx = trxsav; | trx = trxsav; |
| Line 2973 static void insert (int filedes, char *i | Line 3142 static void insert (int filedes, char *i |
| * filedes: global file descriptor | * filedes: global file descriptor |
| * blknbr: block to be freed | * blknbr: block to be freed |
| */ | */ |
| static void b_free (short filedes, unsigned long blknbr) | static void b_free (global_handle *g, unsigned long blknbr) |
| { | { |
| char block0[BLOCKLEN]; | char block0[BLOCKLEN]; |
| unsigned long free; | unsigned long free; |
| unsigned long other; | unsigned long other; |
| long i; | long i; |
| long offset; | long offset; |
| /* mark block as empty */ | /* mark block as empty */ |
| lseek (filedes, (long) (blknbr) * BLOCKLEN, 0); | gbl_read_block (g, blknbr, block0); |
| read (filedes, block0, BLOCKLEN); | |
| block0[BTYP] = EMPTY; | |
| lseek (filedes, (long) (blknbr) * BLOCKLEN, 0); | block0[BTYP] = EMPTY; |
| write (filedes, block0, BLOCKLEN); | |
| gbl_write_block (g, blknbr, block0); | |
| /* do we have a list of free blocks? */ | /* do we have a list of free blocks? */ |
| lseek (filedes, ROOT, 0); | gbl_read_block (g, ROOT, block0); |
| read (filedes, block0, BLOCKLEN); | |
| if ((free = UNSIGN (block0[FREE]) * 65536 + UNSIGN (block0[FREE + 1]) * 256 + UNSIGN (block0[FREE + 2]))) { | if ((free = UNSIGN (block0[FREE]) * 65536 + UNSIGN (block0[FREE + 1]) * 256 + UNSIGN (block0[FREE + 2]))) { |
| for (;;) { | for (;;) { |
| lseek (filedes, (long) free * (long) BLOCKLEN, 0); | gbl_read_block (g, free, block0); |
| read (filedes, block0, BLOCKLEN); | |
| other = UNSIGN (block0[RLPTR]) * 65536 + | other = UNSIGN (block0[RLPTR]) * 65536 + |
| UNSIGN (block0[RLPTR + 1]) * 256 + | UNSIGN (block0[RLPTR + 1]) * 256 + |
| UNSIGN (block0[RLPTR + 2]); | UNSIGN (block0[RLPTR + 2]); |
| if (other == 0) break; | if (other == 0) break; |
| Line 3019 static void b_free (short filedes, unsig | Line 3184 static void b_free (short filedes, unsig |
| offset -= PLEN; | offset -= PLEN; |
| other = UNSIGN (block0[offset]) * 65536 + | other = UNSIGN (block0[offset]) * 65536 + |
| UNSIGN (block0[offset + 1]) * 256 + | UNSIGN (block0[offset + 1]) * 256 + |
| UNSIGN (block0[offset + 2]); | UNSIGN (block0[offset + 2]); |
| block0[offset] = 0; | block0[offset] = 0; |
| block0[offset + 1] = 0; | block0[offset + 1] = 0; |
| Line 3030 static void b_free (short filedes, unsig | Line 3195 static void b_free (short filedes, unsig |
| block0[RLPTR] = other / 65536; | block0[RLPTR] = other / 65536; |
| block0[RLPTR + 1] = other % 65536 / 256; | block0[RLPTR + 1] = other % 65536 / 256; |
| block0[RLPTR + 2] = other % 256; | block0[RLPTR + 2] = other % 256; |
| lseek (filedes, (long) free * (long) BLOCKLEN, 0); | gbl_write_block (g, free, block0); |
| write (filedes, block0, BLOCKLEN); | |
| for (i = 0; i < BLOCKLEN; block0[i++] = 0); /* clear block */ | for (i = 0; i < BLOCKLEN; block0[i++] = 0); /* clear block */ |
| Line 3048 static void b_free (short filedes, unsig | Line 3212 static void b_free (short filedes, unsig |
| } | } |
| else { | else { |
| getnewblk (g, &free); | |
| getnewblk (filedes, &free); | |
| /* set FBLK free blocks pointer */ | /* set FBLK free blocks pointer */ |
| lseek (filedes, ROOT, 0); | gbl_read_block (g, ROOT, block0); |
| read (filedes, block0, BLOCKLEN); | |
| block0[FREE] = free / 65536; | block0[FREE] = free / 65536; |
| block0[FREE + 1] = free % 65536 / 256; | block0[FREE + 1] = free % 65536 / 256; |
| block0[FREE + 2] = free % 256; | block0[FREE + 2] = free % 256; |
| lseek (filedes, ROOT, 0); | gbl_write_block (g, ROOT, block0); |
| write (filedes, block0, BLOCKLEN); | |
| for (i = 0; i < BLOCKLEN; block0[i++] = 0); /* clear block */ | for (i = 0; i < BLOCKLEN; block0[i++] = 0); /* clear block */ |
| Line 3075 static void b_free (short filedes, unsig | Line 3236 static void b_free (short filedes, unsig |
| block0[OFFS] = offset / 256; | block0[OFFS] = offset / 256; |
| block0[OFFS + 1] = offset % 256; | block0[OFFS + 1] = offset % 256; |
| lseek (filedes, (long) free * (long) BLOCKLEN, 0); | gbl_write_block (g, free, block0); |
| write (filedes, block0, BLOCKLEN); | |
| return; | return; |
| } /* end of b_free() */ | } /* end of b_free() */ |
| Line 3149 static void scandblk (char *block, long | Line 3309 static void scandblk (char *block, long |
| char key0[256]; | char key0[256]; |
| offset = UNSIGN (block[OFFS]) * 256 + | offset = UNSIGN (block[OFFS]) * 256 + |
| UNSIGN (block[OFFS + 1]); | UNSIGN (block[OFFS + 1]); |
| while (i < offset) { | while (i < offset) { |
| Line 3196 static void scandblk (char *block, long | Line 3356 static void scandblk (char *block, long |
| * filedes: global file descriptor | * filedes: global file descriptor |
| * blknbr: number of new block | * blknbr: number of new block |
| */ | */ |
| static void getnewblk (int filedes, unsigned long *blknbr) | static void getnewblk (global_handle *g, unsigned long *blknbr) |
| { | { |
| char nblock[BLOCKLEN]; | char nblock[BLOCKLEN]; |
| unsigned long freeblks, no_of_blks; | unsigned long freeblks, no_of_blks; |
| long other; | long other; |
| long offset; | long offset; |
| lseek (filedes, ROOT, 0); | gbl_read_block (g, ROOT, nblock); |
| read (filedes, nblock, BLOCKLEN); | |
| freeblks = UNSIGN (nblock[FREE]) * 65536 + UNSIGN (nblock[FREE + 1]) * 256 + UNSIGN (nblock[FREE + 2]); | freeblks = UNSIGN (nblock[FREE]) * 65536 + UNSIGN (nblock[FREE + 1]) * 256 + UNSIGN (nblock[FREE + 2]); |
| no_of_blks = UNSIGN (nblock[NRBLK]) * 65536 + UNSIGN (nblock[NRBLK + 1]) * 256 + UNSIGN (nblock[NRBLK + 2]); | no_of_blks = UNSIGN (nblock[NRBLK]) * 65536 + UNSIGN (nblock[NRBLK + 1]) * 256 + UNSIGN (nblock[NRBLK + 2]); |
| if (freeblks) { | if (freeblks) { |
| lseek (filedes, (long) (freeblks) * BLOCKLEN, 0); | gbl_read_block (g, freeblks, nblock); |
| read (filedes, nblock, BLOCKLEN); | |
| offset = UNSIGN (nblock[OFFS]) * 256 + UNSIGN (nblock[OFFS + 1]); | offset = UNSIGN (nblock[OFFS]) * 256 + UNSIGN (nblock[OFFS + 1]); |
| Line 3224 static void getnewblk (int filedes, unsi | Line 3382 static void getnewblk (int filedes, unsi |
| /* update RL-block, if any */ | /* update RL-block, if any */ |
| if (other) { | if (other) { |
| lseek (filedes, (long) (other) * BLOCKLEN, 0); | gbl_read_block (g, other, nblock); |
| read (filedes, nblock, BLOCKLEN); | |
| nblock[LLPTR] = 0; | nblock[LLPTR] = 0; |
| nblock[LLPTR + 1] = 0; | nblock[LLPTR + 1] = 0; |
| nblock[LLPTR + 2] = 0; | nblock[LLPTR + 2] = 0; |
| lseek (filedes, (long) (other) * BLOCKLEN, 0); | gbl_write_block (g, other, nblock); |
| write (filedes, nblock, BLOCKLEN); | |
| } | } |
| /* update ROOT block */ | /* update ROOT block */ |
| lseek (filedes, ROOT, 0); | gbl_read_block (g, ROOT, nblock); |
| read (filedes, nblock, BLOCKLEN); | |
| nblock[FREE] = other / 65536; | nblock[FREE] = other / 65536; |
| nblock[FREE + 1] = other % 65536 / 256; | nblock[FREE + 1] = other % 65536 / 256; |
| nblock[FREE + 2] = other % 256; | nblock[FREE + 2] = other % 256; |
| lseek (filedes, ROOT, 0); | gbl_write_block (g, ROOT, nblock); |
| write (filedes, nblock, BLOCKLEN); | |
| return; | return; |
| Line 3257 static void getnewblk (int filedes, unsi | Line 3411 static void getnewblk (int filedes, unsi |
| nblock[offset + 1] = 0; | nblock[offset + 1] = 0; |
| nblock[OFFS] = offset / 256; | nblock[OFFS] = offset / 256; |
| nblock[OFFS + 1] = offset % 256; | nblock[OFFS + 1] = offset % 256; |
| lseek (filedes, (long) (freeblks) * BLOCKLEN, 0); | gbl_write_block (g, freeblks, nblock); |
| write (filedes, nblock, BLOCKLEN); | |
| return; | return; |
| Line 3270 static void getnewblk (int filedes, unsi | Line 3423 static void getnewblk (int filedes, unsi |
| nblock[NRBLK] = no_of_blks / 65536; | nblock[NRBLK] = no_of_blks / 65536; |
| nblock[NRBLK + 1] = no_of_blks % 65536 / 256; | nblock[NRBLK + 1] = no_of_blks % 65536 / 256; |
| nblock[NRBLK + 2] = no_of_blks % 256; | nblock[NRBLK + 2] = no_of_blks % 256; |
| lseek (filedes, ROOT, 0); | gbl_write_block (g, ROOT, nblock); |
| write (filedes, nblock, BLOCKLEN); | |
| *blknbr = no_of_blks; | *blknbr = no_of_blks; |
| for (;;) { | |
| errno = 0; | gbl_write_block (g, no_of_blks, nblock); |
| lseek (filedes, (long) (no_of_blks) * BLOCKLEN, 0); | |
| write (filedes, nblock, BLOCKLEN); | |
| if (errno == 0) break; | |
| panic (); | |
| } | |
| return; | return; |
| Line 3416 static short int g_collate (char *t) | Line 3557 static short int g_collate (char *t) |
| /* | /* |
| * test whether 'str' is canonical | * test whether 'str' is canonical |
| */ | */ |
| //static short int g_numeric (char *str) | |
| short g_numeric (char *str) | short g_numeric (char *str) |
| { | { |
| register int ptr = 0, ch; | register int ptr = 0, ch; |
| Line 3459 short g_numeric (char *str) | Line 3599 short g_numeric (char *str) |
| } /* end g_numeric() */ | } /* end g_numeric() */ |
| /* DEPRECATED: use gbl_close_all() instead */ | |
| void close_all_globals (void) | void close_all_globals (void) |
| { | { |
| register int i; | gbl_close_all (); |
| for (i = 0; i < NO_GLOBLS; i++) { | |
| if (oldfil[i][0] != NUL) { | |
| close (olddes[i]); | |
| usage[i] = 0; | |
| olddes[i] = 0; | |
| oldfil[i][0] = NUL; | |
| } | |
| } | |
| return; | return; |
| } /* end close_all_globals() */ | } /* end close_all_globals() */ |
| static void panic (void) | static void panic (void) |
| { | { |
| printf ("write failed\r\n"); | |
| printf ("\033[s\033[25H\033[5;7mwrite needs more disk space immediately\007"); | printf ("\033[s\033[25H\033[5;7mwrite needs more disk space immediately\007"); |
| sleep (1); | sleep (1); |
| printf ("\033[m\007\033[2K\033[u"); | printf ("\033[m\007\033[2K\033[u"); |
| Line 3502 static void panic (void) | Line 3631 static void panic (void) |
| void gbl_dump_stat(void) | void gbl_dump_stat(void) |
| { | { |
| register int i; | global_handle *g; |
| int ct; | |
| printf ("FreeM Global Statistics [PID %d]\r\n", pid); | int miss_pct; |
| int hit_pct; | |
| printf ("%-10s%-20s%s\r\n", "USECT", "AGE", "FILE"); | unsigned long access_total; |
| printf ("%-10s%-20s%s\r\n", "=====", "===", "===="); | unsigned long hit_total; |
| unsigned long mem_reads_total; | |
| for (i = 0; i < NO_GLOBLS; i++) { | |
| printf ("%-10d%-20ld%s\r\n", usage[i], g_ages[i], oldfil[i]); | mem_reads_total = 0; |
| } | printf ("\r\nFreeM Global Statistics [PID %d]\r\n\r\n", pid); |
| printf ("%-20s%-10s%-10s%-10s%-10s%-12s%-20s%-10s%s\r\n", "GLOBAL", "USECT", "READS", "WRITES", "MEMREADS", "SLOW PTHCT", "AGE", "LAST BLK", "FILE"); | |
| printf ("%-20s%-10s%-10s%-10s%-10s%-12s%-20s%-10s%s\r\n", "======", "=====", "=====", "======", "========", "==========", "===", "========", "===="); | |
| access_total = 0; | |
| ct = 0; | |
| for (g = global_handles_head; g != NULL; g = g->next) { | |
| printf ("%-20s%-10ld%-10ld%-10ld%-10ld%-12ld%-20ld%-10ld%s\r\n", | |
| g->global_name, | |
| g->use_count, | |
| g->read_ops, | |
| g->write_ops, | |
| g->memory_reads, | |
| g->cache_misses, | |
| g->age, | |
| g->last_block, | |
| g->global_path); | |
| ct++; | |
| mem_reads_total += g->memory_reads; | |
| access_total += g->use_count; | |
| } | |
| if (!ct) printf ("<no globals opened in this pid>\r\n"); | |
| hit_total = access_total - gbl_cache_misses; | |
| miss_pct = (gbl_cache_misses * 100) / access_total; | |
| hit_pct = (hit_total * 100) / access_total; | |
| printf ("\r\nTotal accesses: %ld\r\n", access_total); | |
| printf ("Fast path hits %ld\t(%d%%)\r\n", hit_total, hit_pct); | |
| printf ("Fast path misses: %ld\t(%d%%)\r\n", gbl_cache_misses, miss_pct); | |
| printf ("Disk reads avoided: %ld\r\n", mem_reads_total); | |
| } | } |