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Diff for /freem/src/shmmgr.c between versions 1.13 and 1.15

version 1.13, 2025/04/16 17:36:12 version 1.15, 2025/05/09 19:44:50
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 1.15  2025/05/09 19:44:50  snw
    *   Begin shm rework
    *
    *   Revision 1.14  2025/05/08 14:47:26  snw
    *   Break everything to begin shared memory rewrite
    *
  *   Revision 1.13  2025/04/16 17:36:12  snw   *   Revision 1.13  2025/04/16 17:36:12  snw
  *   Add FreeBSD shm cleanup script   *   Add FreeBSD shm cleanup script
  *   *
Line 184  short shm_init(const size_t seg_size) Line 190  short shm_init(const size_t seg_size)
                 logprintf (FM_LOG_FATAL, "shm_init:  could not attach to shared memory semaphore [%s]", strerror (errno));                           logprintf (FM_LOG_FATAL, "shm_init:  could not attach to shared memory semaphore [%s]", strerror (errno));         
             }              }
                           
             /* we are NOT the initial process. if addresses don't match, re-attach! */  
             /* (again, borrowed from RSM) */  
             if (shm_config->hdr->shmad != shm_config->dta) {  
                   
                 /* grab the pointers we need */  
                 void *old_addr = shm_config->dta;  
                 void *new_addr = shm_config->hdr->shmad;  
   
                 logprintf (FM_LOG_INFO, "shmmgr:  remapping shared memory from virtual address %p to %p", old_addr, new_addr);  
                   
                 /* detach and reattach */  
                 if (shmdt (old_addr) == -1) {  
                     logprintf (FM_LOG_FATAL, "shm_init:  detach failed during detach/reattach [shmdt error %s]", strerror (errno));  
                 }  
   
                 if ((shm_config->dta = shmat (shm_config->seg_id, new_addr, 0)) == -1) {  
                     switch (errno) {  
   
                         case EINVAL:  
                             logprintf (FM_LOG_FATAL, "shm_init:  shmat() failed; no matching shared memory segment exists or shared memory address invalid");  
                             break;  
   
                         case ENOMEM:  
                             logprintf (FM_LOG_ERROR, "shm_init:  shmat() failed; specified address cannot be used for mapping");  
                             exit (1);  
                             break;  
   
                         case EMFILE:  
                             logprintf (FM_LOG_FATAL, "shm_init:  shmat() failed; per-process shared memory segment limit reached; check kernel tuning parameters");  
                             break;  
   
                         default:  
                             logprintf (FM_LOG_FATAL, "shm_init:  shmat() failed; error code %d [%s]", errno, strerror (errno));  
                             break;  
                               
                     }  
                 }  
                   
                 shm_config->hdr = (shm_hdr_t *) shm_config->dta;  
   
                 /* allocator buffer at the next page-aligned address after the header and allocation map */              shm_config->buf = SBM(SHMALIGN(SOM(shm_config->dta) + (sizeof (shm_hdr_t) * shm_config->pgct)));
                 shm_config->buf = SHMALIGN(shm_config->dta + (sizeof (shm_hdr_t) * shm_config->pgct));  
             }  
             else {  
                 shm_config->buf = SHMALIGN(shm_config->dta + (sizeof (shm_hdr_t) * shm_config->pgct));  
             }  
                   
         }          }
   
Removed from v.1.13  
changed lines
  Added in v.1.15

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