version 1.2, 2025/02/28 20:23:25
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version 1.9, 2025/05/01 21:02:31
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/* |
/* |
* * |
* $Id$ |
* * * |
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* * * |
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* *************** |
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* * * * * |
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* * MUMPS * |
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* * * * * |
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* *************** |
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* * * |
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* * * |
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* * |
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* |
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* jobtab.c |
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* job table implementation |
* job table implementation |
* |
* |
* |
* |
* Author: Serena Willis <jpw@coherent-logic.com> |
* Author: Serena Willis <snw@coherent-logic.com> |
* Copyright (C) 1998 MUG Deutschland |
* Copyright (C) 1998 MUG Deutschland |
* Copyright (C) 2021, 2023 Coherent Logic Development LLC |
* Copyright (C) 2021, 2023, 2025 Coherent Logic Development LLC |
* |
* |
* |
* |
* This file is part of FreeM. |
* This file is part of FreeM. |
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* You should have received a copy of the GNU Affero Public License |
* You should have received a copy of the GNU Affero Public License |
* along with FreeM. If not, see <https://www.gnu.org/licenses/>. |
* along with FreeM. If not, see <https://www.gnu.org/licenses/>. |
* |
* |
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* $Log$ |
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* Revision 1.9 2025/05/01 21:02:31 snw |
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* Documentation updates |
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* |
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* Revision 1.8 2025/04/30 20:03:09 snw |
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* Work on entryref parser |
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* |
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* Revision 1.7 2025/04/17 00:34:04 snw |
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* More logging improvements |
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* |
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* Revision 1.6 2025/04/10 01:24:38 snw |
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* Remove C++ style comments |
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* |
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* Revision 1.5 2025/03/24 02:57:49 snw |
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* Shared memory compatibility fixes for OS/2 |
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* |
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* Revision 1.4 2025/03/09 19:14:25 snw |
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* First phase of REUSE compliance and header reformat |
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* |
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* |
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* SPDX-FileCopyrightText: (C) 2025 Coherent Logic Development LLC |
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* SPDX-License-Identifier: AGPL-3.0-or-later |
**/ |
**/ |
#include <stdlib.h> |
#include <stdlib.h> |
#include <string.h> |
#include <string.h> |
#include <time.h> |
#include <time.h> |
#include <unistd.h> |
#include <unistd.h> |
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#include <errno.h> |
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#include "mpsdef.h" |
#include "mpsdef.h" |
#include "shmmgr.h" |
#include "shmmgr.h" |
#include "jobtab.h" |
#include "jobtab.h" |
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#include "log.h" |
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#if !defined(__OpenBSD__) && !defined(__APPLE__) |
#if !defined(__OpenBSD__) && !defined(__APPLE__) && !defined(__OS2__) |
union semun { |
union semun { |
int val; /* Value for SETVAL */ |
int val; /* Value for SETVAL */ |
struct semid_ds *buf; /* Buffer for IPC_STAT, IPC_SET */ |
struct semid_ds *buf; /* Buffer for IPC_STAT, IPC_SET */ |
Line 68 void jobtab_init(void)
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Line 80 void jobtab_init(void)
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semid_jobtab = semget (jt_sk, 1, 0666 | IPC_CREAT); |
semid_jobtab = semget (jt_sk, 1, 0666 | IPC_CREAT); |
if (semid_jobtab == -1) { |
if (semid_jobtab == -1) { |
fprintf (stderr, "jobtab_init: failed to create job table semaphore\r\n"); |
logprintf (FM_LOG_FATAL, "jobtab_init: failed to create job table semaphore (error code %d [%s])", errno, strerror (errno)); |
exit (1); |
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} |
} |
else { |
else { |
fprintf (stderr, "jobtab_init: job table semaphore created with semid %d\r\n", semid_jobtab); |
logprintf (FM_LOG_INFO, "jobtab_init: job table semaphore created with semid %d", semid_jobtab); |
} |
} |
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arg.val = 1; |
arg.val = 1; |
if (semctl (semid_jobtab, 0, SETVAL, arg) == -1) { |
if (semctl (semid_jobtab, 0, SETVAL, arg) == -1) { |
fprintf (stderr, "jobtab_init: failed to initialize job table semaphore\r\n"); |
logprintf (FM_LOG_FATAL, "jobtab_init: failed to initialize job table semaphore (error code %d [%s])", errno, strerror (errno)); |
exit (1); |
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} |
} |
else { |
else { |
fprintf (stderr, "jobtab_init: job table semaphore initialized\r\n"); |
logprintf (FM_LOG_INFO, "jobtab_init: job table semaphore initialized"); |
} |
} |
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} |
} |
Line 89 void jobtab_init(void)
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Line 99 void jobtab_init(void)
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semid_jobtab = semget (jt_sk, 1, 0); |
semid_jobtab = semget (jt_sk, 1, 0); |
if (semid_jobtab == -1) { |
if (semid_jobtab == -1) { |
fprintf (stderr, "jobtab_init: could not attach to job table semaphore\r\n"); |
logprintf (FM_LOG_FATAL, "jobtab_init: could not attach to job table semaphore (error code %d [%s])", errno, strerror (errno)); |
exit (1); |
} |
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else { |
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logprintf (FM_LOG_INFO, "jobtab_init: attached to job table semaphore (semid %d)", semid_jobtab); |
} |
} |
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} |
} |
Line 104 short jobtab_get_sem(void)
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Line 116 short jobtab_get_sem(void)
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struct sembuf s = {0, -1, IPC_NOWAIT}; |
struct sembuf s = {0, -1, IPC_NOWAIT}; |
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if (have_jobtab_sem) { |
if (have_jobtab_sem) { |
// fprintf (stderr, "jobtab_get_sem: this process already owns the job table semaphore\r\n"); |
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return TRUE; |
return TRUE; |
} |
} |
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Line 115 short jobtab_get_sem(void)
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Line 126 short jobtab_get_sem(void)
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return TRUE; |
return TRUE; |
} |
} |
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/* fprintf (stderr, "jobtab_get_sem: sleeping for retry [tries = %d]\r\n", tries); */ |
logprintf (FM_LOG_INFO, "jobtab_get_sem: sleeping for retry [tries = %d]", tries); |
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sleep (1); |
sleep (1); |
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} |
} |
fprintf (stderr, "jobtab_get_sem: fail\r\n"); |
logprintf (FM_LOG_ERROR, "jobtab_get_sem: failed to acquire job table semaphore"); |
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have_jobtab_sem = FALSE; |
have_jobtab_sem = FALSE; |
return FALSE; |
return FALSE; |
Line 142 job_slot_t *job_init(short is_fmadm)
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Line 152 job_slot_t *job_init(short is_fmadm)
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job_slot_t *s; |
job_slot_t *s; |
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if (jobtab_get_sem () == FALSE) { |
if (jobtab_get_sem () == FALSE) { |
fprintf (stderr, "job_init: failed to get job table semaphore\r\n"); |
logprintf (FM_LOG_FATAL, "job_init: failed to get job table semaphore"); |
exit (1); |
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} |
} |
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for (s = shm_config->hdr->jobtab_head; s != NULL; s = s->next) { |
for (s = shm_config->hdr->jobtab_head; s != NULL; s = s->next) { |
Line 193 void job_remove(const pid_t pid)
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Line 202 void job_remove(const pid_t pid)
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job_slot_t *t = shm_config->hdr->jobtab_head; |
job_slot_t *t = shm_config->hdr->jobtab_head; |
job_slot_t *p = NULL; |
job_slot_t *p = NULL; |
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if (jobtab_get_sem() == FALSE) { |
if (jobtab_get_sem () == FALSE) { |
fprintf (stderr, "job_remove: failed to get job table semaphore\r\n"); |
logprintf (FM_LOG_FATAL, "job_remove: failed to get job table semaphore"); |
exit (1); |
exit (1); |
} |
} |
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Line 224 void job_remove(const pid_t pid)
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Line 233 void job_remove(const pid_t pid)
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jobtab_release_sem (); |
jobtab_release_sem (); |
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locktab_unlock_all_by_pid (pid); |
} |
} |
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void job_request_stop(const pid_t target_pid) |
void job_request_stop(const pid_t target_pid) |
Line 232 void job_request_stop(const pid_t target
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Line 242 void job_request_stop(const pid_t target
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job_slot_t *s; |
job_slot_t *s; |
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if (jobtab_get_sem() == FALSE) { |
if (jobtab_get_sem() == FALSE) { |
fprintf (stderr, "job_request_stop: failed to get job table semaphore\r\n"); |
logprintf (FM_LOG_FATAL, "job_request_stop: failed to get job table semaphore"); |
exit (1); |
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} |
} |
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for (s = shm_config->hdr->jobtab_head; s != NULL; s = s->next) { |
for (s = shm_config->hdr->jobtab_head; s != NULL; s = s->next) { |
Line 258 void job_set_ecode(const pid_t target_pi
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Line 267 void job_set_ecode(const pid_t target_pi
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job_slot_t *s; |
job_slot_t *s; |
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if (jobtab_get_sem() == FALSE) { |
if (jobtab_get_sem () == FALSE) { |
fprintf (stderr, "job_set_ecode: failed to get job table semaphore\r\n"); |
logprintf (FM_LOG_FATAL, "job_set_ecode: failed to get job table semaphore"); |
exit (1); |
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} |
} |
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for (s = shm_config->hdr->jobtab_head; s != NULL; s = s->next) { |
for (s = shm_config->hdr->jobtab_head; s != NULL; s = s->next) { |
Line 281 pid_t job_stop_requested (const pid_t ta
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Line 289 pid_t job_stop_requested (const pid_t ta
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{ |
{ |
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job_slot_t *s; |
job_slot_t *s; |
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for (s = shm_config->hdr->jobtab_head; s != NULL; s = s->next) { |
for (s = shm_config->hdr->jobtab_head; s != NULL; s = s->next) { |
if (s->pid == target_pid) { |
if (s->pid == target_pid) { |
Line 349 job_slot_t *job_set_status(const pid_t t
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Line 356 job_slot_t *job_set_status(const pid_t t
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job_slot_t *s; |
job_slot_t *s; |
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if (jobtab_get_sem() == FALSE) { |
if (jobtab_get_sem () == FALSE) { |
fprintf (stderr, "job_set_status: failed to get job table semaphore\r\n"); |
logprintf (FM_LOG_FATAL, "job_set_status: failed to get job table semaphore"); |
exit (1); |
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} |
} |
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for (s = shm_config->hdr->jobtab_head; s != NULL; s = s->next) { |
for (s = shm_config->hdr->jobtab_head; s != NULL; s = s->next) { |
Line 374 void job_gc_mark(void)
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Line 380 void job_gc_mark(void)
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{ |
{ |
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job_slot_t *s; |
job_slot_t *s; |
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int jobstat; |
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if (jobtab_get_sem () == FALSE) { |
if (jobtab_get_sem () == FALSE) { |
fprintf (stderr, "job_gc_mark: failed to get job table semaphore\r\n"); |
logprintf (FM_LOG_FATAL, "job_gc_mark: failed to get job table semaphore"); |
exit (1); |
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} |
} |
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for (s = shm_config->hdr->jobtab_head; s != NULL; s = s->next) { |
for (s = shm_config->hdr->jobtab_head; s != NULL; s = s->next) { |
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if (kill (s->pid, 0) != 0) { |
if ((jobstat = kill (s->pid, 0)) != 0) { |
fprintf (stderr, "job_gc_mark: marking pid %ld DEFUNCT\r\n", (long) s->pid); |
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s->flags = JFLG_DEFUNCT; |
switch (jobstat) { |
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case EPERM: |
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logprintf (FM_LOG_WARNING, "job_gc_mark: environment daemon lacks permissions to pid %ld", (long) s->pid); |
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break; |
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case ESRCH: |
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logprintf (FM_LOG_INFO, "job_gc_mark: marking pid %ld DEFUNCT", (long) s->pid); |
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s->flags = JFLG_DEFUNCT; |
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break; |
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} |
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} |
} |
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if ((s->flags & JFLG_NEW) == JFLG_NEW) { |
if ((s->flags & JFLG_NEW) == JFLG_NEW) { |
if ((s->flags & JFLG_DAEMON) == JFLG_DAEMON) { |
if ((s->flags & JFLG_DAEMON) == JFLG_DAEMON) { |
fprintf (stderr, "job_gc_mark: registering new daemon %ld\r\n", (long) s->pid); |
logprintf (FM_LOG_INFO, "job_gc_mark: registering new daemon %ld", (long) s->pid); |
s->flags = JFLG_ALIVE | JFLG_DAEMON; |
s->flags = JFLG_ALIVE | JFLG_DAEMON; |
} |
} |
else { |
else { |
if ((s->flags & JFLG_FMADM) == JFLG_FMADM) { |
if ((s->flags & JFLG_FMADM) == JFLG_FMADM) { |
fprintf (stderr, "job_gc_mark: registering new fmadm process %ld\r\n", (long) s->pid); |
logprintf (FM_LOG_INFO, "job_gc_mark: registering new fmadm process %ld", (long) s->pid); |
s->flags = JFLG_ALIVE | JFLG_FMADM; |
s->flags = JFLG_ALIVE | JFLG_FMADM; |
} |
} |
else { |
else { |
fprintf (stderr, "job_gc_mark: registering new interpreter process %ld\r\n", (long) s->pid); |
logprintf (FM_LOG_INFO, "job_gc_mark: registering new interpreter process %ld", (long) s->pid); |
s->flags = JFLG_ALIVE; |
s->flags = JFLG_ALIVE; |
} |
} |
} |
} |
Line 418 void job_gc_sweep(void)
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Line 436 void job_gc_sweep(void)
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NULLPTRCHK(k_buf,"job_gc_sweep"); |
NULLPTRCHK(k_buf,"job_gc_sweep"); |
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if (jobtab_get_sem () == FALSE) { |
if (jobtab_get_sem () == FALSE) { |
fprintf (stderr, "job_gc_sweep: failed to get job table semaphore\r\n"); |
logprintf (FM_LOG_FATAL, "job_gc_sweep: failed to get job table semaphore"); |
exit (1); |
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} |
} |
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Line 427 void job_gc_sweep(void)
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Line 444 void job_gc_sweep(void)
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if ((s->flags & JFLG_DEFUNCT) == JFLG_DEFUNCT) { |
if ((s->flags & JFLG_DEFUNCT) == JFLG_DEFUNCT) { |
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fprintf (stderr, "job_gc_sweep: sweeping DEFUNCT pid %ld\r\n", (long) s->pid); |
logprintf (FM_LOG_INFO, "job_gc_sweep: sweeping DEFUNCT pid %ld", (long) s->pid); |
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snprintf (k_buf, STRLEN - 1, "^$JOB\202%d\201", s->pid); |
snprintf (k_buf, STRLEN - 1, "^$JOB\202%d\201", s->pid); |
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Line 458 ipc_slot_t *job_send_ipc(const pid_t rec
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Line 475 ipc_slot_t *job_send_ipc(const pid_t rec
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ipc_slot_t *s = (ipc_slot_t *) shm_alloc (sizeof (ipc_slot_t)); |
ipc_slot_t *s = (ipc_slot_t *) shm_alloc (sizeof (ipc_slot_t)); |
NULLPTRCHK(s,"job_send_ipc"); |
NULLPTRCHK(s,"job_send_ipc"); |
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if (jobtab_get_sem() == FALSE) { |
if (jobtab_get_sem () == FALSE) { |
fprintf (stderr, "job_send_ipc: failed to get job table semaphore\r\n"); |
logprintf (FM_LOG_FATAL, "job_send_ipc: failed to get job table semaphore"); |
exit (1); |
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} |
} |
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