/* init the progress engine - called from orte_init */ int opal_progress_init(void) { /* reentrant issues */ opal_atomic_init(&progress_lock, OPAL_ATOMIC_UNLOCKED); /* set the event tick rate */ opal_progress_set_event_poll_rate(10000); #if OPAL_ENABLE_DEBUG if (opal_progress_debug) { debug_output = opal_output_open(NULL); } #endif OPAL_OUTPUT((debug_output, "progress: initialized event flag to: %x", opal_progress_event_flag)); OPAL_OUTPUT((debug_output, "progress: initialized yield_when_idle to: %s", opal_progress_yield_when_idle ? "true" : "false")); OPAL_OUTPUT((debug_output, "progress: initialized num users to: %d", num_event_users)); OPAL_OUTPUT((debug_output, "progress: initialized poll rate to: %ld", (long) event_progress_delta)); return OPAL_SUCCESS; }
static void trigger_event_constructor(orte_trigger_event_t *trig) { trig->name = NULL; trig->channel = -1; opal_atomic_init(&trig->lock, OPAL_ATOMIC_UNLOCKED); }
/* init the progress engine - called from orte_init */ int opal_progress_init(void) { #if OPAL_ENABLE_DEBUG int param, value; #endif /* reentrant issues */ #if OPAL_HAVE_THREAD_SUPPORT opal_atomic_init(&progress_lock, OPAL_ATOMIC_UNLOCKED); #endif /* OPAL_HAVE_THREAD_SUPPORT */ /* set the event tick rate */ opal_progress_set_event_poll_rate(10000); #if OPAL_ENABLE_DEBUG param = mca_base_param_find("opal", NULL, "progress_debug"); mca_base_param_lookup_int(param, &value); if (value) { debug_output = opal_output_open(NULL); } #endif OPAL_OUTPUT((debug_output, "progress: initialized event flag to: %x", opal_progress_event_flag)); OPAL_OUTPUT((debug_output, "progress: initialized yield_when_idle to: %s", call_yield == 0 ? "false" : "true")); OPAL_OUTPUT((debug_output, "progress: initialized num users to: %d", num_event_users)); OPAL_OUTPUT((debug_output, "progress: initialized poll rate to: %ld", (long) event_progress_delta)); return OPAL_SUCCESS; }
int main(int argc, char *argv[]) { int ret = 77; opal_atomic_lock_t lock; int num_threads = 1; if (argc != 2) { printf("*** Incorrect number of arguments. Skipping test\n"); return 77; } num_threads = atoi(argv[1]); opal_atomic_init(&lock, OPAL_ATOMIC_UNLOCKED); ret = atomic_spinlock_test_th(&lock, TEST_REPS, 0, num_threads); return ret; }
static void opal_mutex_construct(opal_mutex_t *m) { #if OPAL_HAVE_POSIX_THREADS #if OPAL_ENABLE_DEBUG pthread_mutexattr_t attr; pthread_mutexattr_init(&attr); /* set type to ERRORCHECK so that we catch recursive locks */ #if OMPI_HAVE_PTHREAD_MUTEX_ERRORCHECK_NP pthread_mutexattr_settype(&attr, PTHREAD_MUTEX_ERRORCHECK_NP); #elif OMPI_HAVE_PTHREAD_MUTEX_ERRORCHECK pthread_mutexattr_settype(&attr, PTHREAD_MUTEX_ERRORCHECK); #endif /* OMPI_HAVE_PTHREAD_MUTEX_ERRORCHECK_NP */ pthread_mutex_init(&m->m_lock_pthread, &attr); pthread_mutexattr_destroy(&attr); #else /* Without debugging, choose the fastest available mutexes */ pthread_mutex_init(&m->m_lock_pthread, NULL); #endif /* OPAL_ENABLE_DEBUG */ #endif #if OPAL_ENABLE_DEBUG && !OPAL_ENABLE_MULTI_THREADS m->m_lock_debug = 0; m->m_lock_file = NULL; m->m_lock_line = 0; #endif #if OPAL_HAVE_ATOMIC_SPINLOCKS opal_atomic_init( &m->m_lock_atomic, OPAL_ATOMIC_UNLOCKED ); #endif }
/* init the progress engine - called from orte_init */ int opal_progress_init(void) { /* reentrant issues */ #if OMPI_HAVE_THREAD_SUPPORT opal_atomic_init(&progress_lock, OPAL_ATOMIC_UNLOCKED); #endif /* OMPI_HAVE_THREAD_SUPPORT */ /* always call sched yield when in the rte only... */ call_yield = 1; #if OPAL_PROGRESS_USE_TIMERS event_progress_delta = 0; #if OPAL_TIMER_USEC_NATIVE event_progress_last_time = opal_timer_base_get_usec(); #else event_progress_last_time = opal_timer_base_get_cycles(); #endif #else event_progress_counter = event_progress_delta = 0; #endif return OPAL_SUCCESS; }
/* ////////////////////////////////////////////////////////////////////////// */ static int segment_create(opal_shmem_ds_t *ds_buf, const char *file_name, size_t size) { int rc = OPAL_SUCCESS; pid_t my_pid = getpid(); /* the real size of the shared memory segment. this includes enough space * to store our segment header. */ size_t real_size = size + sizeof(opal_shmem_seg_hdr_t); opal_shmem_seg_hdr_t *seg_hdrp = MAP_FAILED; /* init the contents of opal_shmem_ds_t */ shmem_ds_reset(ds_buf); /* for sysv shared memory we don't have to worry about the backing store * being located on a network file system... so no check is needed here. */ /* create a new shared memory segment and save the shmid. note the use of * real_size here */ if (-1 == (ds_buf->seg_id = shmget(IPC_PRIVATE, real_size, IPC_CREAT | IPC_EXCL | S_IRWXU))) { int err = errno; char hn[OPAL_MAXHOSTNAMELEN]; gethostname(hn, sizeof(hn)); opal_show_help("help-opal-shmem-sysv.txt", "sys call fail", 1, hn, "shmget(2)", "", strerror(err), err); rc = OPAL_ERROR; goto out; } /* attach to the sement */ else if ((void *)-1 == (seg_hdrp = shmat(ds_buf->seg_id, NULL, 0))) { int err = errno; char hn[OPAL_MAXHOSTNAMELEN]; gethostname(hn, sizeof(hn)); opal_show_help("help-opal-shmem-sysv.txt", "sys call fail", 1, hn, "shmat(2)", "", strerror(err), err); shmctl(ds_buf->seg_id, IPC_RMID, NULL); rc = OPAL_ERROR; goto out; } /* mark the segment for destruction - if we are here, then the run-time * component selection test detected adequate support for this type of * thing. */ else if (0 != shmctl(ds_buf->seg_id, IPC_RMID, NULL)) { int err = errno; char hn[OPAL_MAXHOSTNAMELEN]; gethostname(hn, sizeof(hn)); opal_show_help("help-opal-shmem-sysv.txt", "sys call fail", 1, hn, "shmctl(2)", "", strerror(err), err); rc = OPAL_ERROR; goto out; } /* all is well */ else { /* -- initialize the shared memory segment -- */ opal_atomic_rmb(); /* init segment lock */ opal_atomic_init(&seg_hdrp->lock, OPAL_ATOMIC_UNLOCKED); /* i was the creator of this segment, so note that fact */ seg_hdrp->cpid = my_pid; opal_atomic_wmb(); /* -- initialize the contents of opal_shmem_ds_t -- */ ds_buf->seg_cpid = my_pid; ds_buf->seg_size = real_size; ds_buf->seg_base_addr = (unsigned char *)seg_hdrp; /* notice that we are not setting ds_buf->name here. sysv doesn't use * it, so don't worry about it - shmem_ds_reset took care of * initialization, so we aren't passing garbage around. */ /* set "valid" bit because setment creation was successful */ OPAL_SHMEM_DS_SET_VALID(ds_buf); OPAL_OUTPUT_VERBOSE( (70, opal_shmem_base_framework.framework_output, "%s: %s: create successful " "(id: %d, size: %lu, name: %s)\n", mca_shmem_sysv_component.super.base_version.mca_type_name, mca_shmem_sysv_component.super.base_version.mca_component_name, ds_buf->seg_id, (unsigned long)ds_buf->seg_size, ds_buf->seg_name) ); } out: /* an error occured, so invalidate the shmem object and release any * allocated resources. */ if (OPAL_SUCCESS != rc) { /* best effort to delete the segment. */ if ((void *)-1 != seg_hdrp) { shmdt((char*)seg_hdrp); } shmctl(ds_buf->seg_id, IPC_RMID, NULL); /* always invalidate in this error path */ shmem_ds_reset(ds_buf); } return rc; }
/* ////////////////////////////////////////////////////////////////////////// */ static int segment_create(opal_shmem_ds_t *ds_buf, const char *file_name, size_t size) { int rc = OPAL_SUCCESS; char *real_file_name = NULL; pid_t my_pid = getpid(); bool space_available = false; uint64_t amount_space_avail = 0; /* the real size of the shared memory segment. this includes enough space * to store our segment header. */ size_t real_size = size + sizeof(opal_shmem_seg_hdr_t); opal_shmem_seg_hdr_t *seg_hdrp = MAP_FAILED; /* init the contents of opal_shmem_ds_t */ shmem_ds_reset(ds_buf); /* change the path of shmem mmap's backing store? */ if (0 != opal_shmem_mmap_relocate_backing_file) { int err; if (path_usable(opal_shmem_mmap_backing_file_base_dir, &err)) { if (NULL == (real_file_name = get_uniq_file_name(opal_shmem_mmap_backing_file_base_dir, file_name))) { /* out of resources */ return OPAL_ERROR; } } /* a relocated backing store was requested, but the path specified * cannot be used :-(. if the flag is negative, then warn and continue * with the default path. otherwise, fail. */ else if (opal_shmem_mmap_relocate_backing_file < 0) { opal_output(0, "shmem: mmap: WARNING: could not relocate " "backing store to \"%s\" (%s). Continuing with " "default path.\n", opal_shmem_mmap_backing_file_base_dir, strerror(err)); } /* must be positive, so fail */ else { opal_output(0, "shmem: mmap: WARNING: could not relocate " "backing store to \"%s\" (%s). Cannot continue with " "shmem mmap.\n", opal_shmem_mmap_backing_file_base_dir, strerror(err)); return OPAL_ERROR; } } /* are we using the default path? */ if (NULL == real_file_name) { /* use the path specified by the caller of this function */ if (NULL == (real_file_name = strdup(file_name))) { /* out of resources */ return OPAL_ERROR; } } OPAL_OUTPUT_VERBOSE( (70, opal_shmem_base_framework.framework_output, "%s: %s: backing store base directory: %s\n", mca_shmem_mmap_component.super.base_version.mca_type_name, mca_shmem_mmap_component.super.base_version.mca_component_name, real_file_name) ); /* determine whether the specified filename is on a network file system. * this is an important check because if the backing store is located on * a network filesystem, the user may see a shared memory performance hit. */ if (opal_shmem_mmap_nfs_warning && opal_path_nfs(real_file_name)) { char hn[MAXHOSTNAMELEN]; gethostname(hn, MAXHOSTNAMELEN - 1); hn[MAXHOSTNAMELEN - 1] = '\0'; opal_show_help("help-opal-shmem-mmap.txt", "mmap on nfs", 1, hn, real_file_name); } /* let's make sure we have enough space for the backing file */ if (OPAL_SUCCESS != (rc = enough_space(real_file_name, real_size, &amount_space_avail, &space_available))) { opal_output(0, "shmem: mmap: an error occurred while determining " "whether or not %s could be created.", real_file_name); /* rc is set */ goto out; } if (!space_available) { char hn[MAXHOSTNAMELEN]; gethostname(hn, MAXHOSTNAMELEN - 1); hn[MAXHOSTNAMELEN - 1] = '\0'; rc = OPAL_ERR_OUT_OF_RESOURCE; opal_show_help("help-opal-shmem-mmap.txt", "target full", 1, real_file_name, hn, (unsigned long)real_size, (unsigned long long)amount_space_avail); goto out; } /* enough space is available, so create the segment */ if (-1 == (ds_buf->seg_id = open(real_file_name, O_CREAT | O_RDWR, 0600))) { int err = errno; char hn[MAXHOSTNAMELEN]; gethostname(hn, MAXHOSTNAMELEN - 1); hn[MAXHOSTNAMELEN - 1] = '\0'; opal_show_help("help-opal-shmem-mmap.txt", "sys call fail", 1, hn, "open(2)", "", strerror(err), err); rc = OPAL_ERROR; goto out; } /* size backing file - note the use of real_size here */ if (0 != ftruncate(ds_buf->seg_id, real_size)) { int err = errno; char hn[MAXHOSTNAMELEN]; gethostname(hn, MAXHOSTNAMELEN - 1); hn[MAXHOSTNAMELEN - 1] = '\0'; opal_show_help("help-opal-shmem-mmap.txt", "sys call fail", 1, hn, "ftruncate(2)", "", strerror(err), err); rc = OPAL_ERROR; goto out; } if (MAP_FAILED == (seg_hdrp = (opal_shmem_seg_hdr_t *) mmap(NULL, real_size, PROT_READ | PROT_WRITE, MAP_SHARED, ds_buf->seg_id, 0))) { int err = errno; char hn[MAXHOSTNAMELEN]; gethostname(hn, MAXHOSTNAMELEN - 1); hn[MAXHOSTNAMELEN - 1] = '\0'; opal_show_help("help-opal-shmem-mmap.txt", "sys call fail", 1, hn, "mmap(2)", "", strerror(err), err); rc = OPAL_ERROR; goto out; } /* all is well */ else { /* -- initialize the shared memory segment -- */ opal_atomic_rmb(); /* init segment lock */ opal_atomic_init(&seg_hdrp->lock, OPAL_ATOMIC_UNLOCKED); /* i was the creator of this segment, so note that fact */ seg_hdrp->cpid = my_pid; opal_atomic_wmb(); /* -- initialize the contents of opal_shmem_ds_t -- */ ds_buf->seg_cpid = my_pid; ds_buf->seg_size = real_size; ds_buf->seg_base_addr = (unsigned char *)seg_hdrp; (void)strncpy(ds_buf->seg_name, real_file_name, OPAL_PATH_MAX - 1); /* set "valid" bit because setment creation was successful */ OPAL_SHMEM_DS_SET_VALID(ds_buf); OPAL_OUTPUT_VERBOSE( (70, opal_shmem_base_framework.framework_output, "%s: %s: create successful " "(id: %d, size: %lu, name: %s)\n", mca_shmem_mmap_component.super.base_version.mca_type_name, mca_shmem_mmap_component.super.base_version.mca_component_name, ds_buf->seg_id, (unsigned long)ds_buf->seg_size, ds_buf->seg_name) ); } out: /* in this component, the id is the file descriptor returned by open. this * check is here to see if it is safe to call close on the file descriptor. * that is, we are making sure that our call to open was successful and * we are not not in an error path. */ if (-1 != ds_buf->seg_id) { if (0 != close(ds_buf->seg_id)) { int err = errno; char hn[MAXHOSTNAMELEN]; gethostname(hn, MAXHOSTNAMELEN - 1); hn[MAXHOSTNAMELEN - 1] = '\0'; opal_show_help("help-opal-shmem-mmap.txt", "sys call fail", 1, hn, "close(2)", "", strerror(err), err); rc = OPAL_ERROR; } } /* an error occured, so invalidate the shmem object and munmap if needed */ if (OPAL_SUCCESS != rc) { if (MAP_FAILED != seg_hdrp) { munmap((void *)seg_hdrp, real_size); } shmem_ds_reset(ds_buf); } /* safe to free now because its contents have already been copied */ if (NULL != real_file_name) { free(real_file_name); } return rc; }
/* ////////////////////////////////////////////////////////////////////////// */ static int segment_create(opal_shmem_ds_t *ds_buf, const char *file_name, size_t size) { int rc = OPAL_SUCCESS; pid_t my_pid = getpid(); /* the real size of the shared memory segment. this includes enough space * to store our segment header. */ size_t real_size = size + sizeof(opal_shmem_seg_hdr_t); opal_shmem_seg_hdr_t *seg_hdrp = MAP_FAILED; /* init the contents of opal_shmem_ds_t */ shmem_ds_reset(ds_buf); /* for posix shared memory we don't have to worry about the backing store * being located on a network file system... so no check is needed here. */ /* calling shmem_posix_shm_open searches for an available posix shared * memory object name and upon successful completion populates the name * buffer */ if (-1 == (ds_buf->seg_id = shmem_posix_shm_open( ds_buf->seg_name, OPAL_SHMEM_POSIX_FILE_LEN_MAX - 1))) { /* snaps! something happened in posix_shm_open. don't report anything * here because posix_shm_open will display all the necessary info. */ rc = OPAL_ERROR; goto out; } /* size backing file - note the use of real_size here */ else if (0 != ftruncate(ds_buf->seg_id, real_size)) { int err = errno; char hn[MAXHOSTNAMELEN]; gethostname(hn, MAXHOSTNAMELEN - 1); hn[MAXHOSTNAMELEN - 1] = '\0'; opal_show_help("help-opal-shmem-posix.txt", "sys call fail", 1, hn, "ftruncate(2)", "", strerror(err), err); rc = OPAL_ERROR; goto out; } else if (MAP_FAILED == (seg_hdrp = (opal_shmem_seg_hdr_t*)mmap(NULL, real_size, PROT_READ | PROT_WRITE, MAP_SHARED, ds_buf->seg_id, 0))) { int err = errno; char hn[MAXHOSTNAMELEN]; gethostname(hn, MAXHOSTNAMELEN - 1); hn[MAXHOSTNAMELEN - 1] = '\0'; opal_show_help("help-opal-shmem-posix.txt", "sys call fail", 1, hn, "mmap(2)", "", strerror(err), err); rc = OPAL_ERROR; goto out; } /* all is well */ else { /* -- initialize the shared memory segment -- */ opal_atomic_rmb(); /* init segment lock */ opal_atomic_init(&seg_hdrp->lock, OPAL_ATOMIC_UNLOCKED); /* i was the creator of this segment, so note that fact */ seg_hdrp->cpid = my_pid; opal_atomic_wmb(); /* -- initialize the contents of opal_shmem_ds_t -- */ ds_buf->seg_cpid = my_pid; ds_buf->seg_size = real_size; ds_buf->seg_base_addr = (unsigned char *)seg_hdrp; /* notice that we are not setting ds_buf->name here. at this point, * posix_shm_open was successful, so the contents of ds_buf->name are * already set for us :-) */ /* set "valid" bit because setment creation was successful */ OPAL_SHMEM_DS_SET_VALID(ds_buf); OPAL_OUTPUT_VERBOSE( (70, opal_shmem_base_framework.framework_output, "%s: %s: create successful " "(id: %d, size: %lu, name: %s)\n", mca_shmem_posix_component.super.base_version.mca_type_name, mca_shmem_posix_component.super.base_version.mca_component_name, ds_buf->seg_id, (unsigned long)ds_buf->seg_size, ds_buf->seg_name) ); } out: /* in this component, the id is the file descriptor returned by open. this * check is here to see if it is safe to call close on the file descriptor. * that is, we are making sure that our call to open was successful and * we are not not in an error path. */ if (-1 != ds_buf->seg_id) { if (0 != close(ds_buf->seg_id)) { int err = errno; char hn[MAXHOSTNAMELEN]; gethostname(hn, MAXHOSTNAMELEN - 1); hn[MAXHOSTNAMELEN - 1] = '\0'; opal_show_help("help-opal-shmem-mmap.txt", "sys call fail", 1, hn, "close(2)", "", strerror(err), err); rc = OPAL_ERROR; } } /* an error occured, so invalidate the shmem object and release any * allocated resources. */ if (OPAL_SUCCESS != rc) { /* posix_shm_open was successful, but something else wasn't. * note: if the id is not equal to -1 and we are here, name will be * valid. that is, we can safely call shm_unlink with ds_buf->name. */ if (-1 != ds_buf->seg_id) { shm_unlink(ds_buf->seg_name); } if (MAP_FAILED != seg_hdrp) { munmap((void*)seg_hdrp, real_size); } /* always invalidate in this error path */ shmem_ds_reset(ds_buf); } return rc; }
/* ////////////////////////////////////////////////////////////////////////// */ static int segment_create(opal_shmem_ds_t *ds_buf, const char *file_name, size_t size) { int rc = OPAL_SUCCESS; pid_t my_pid = getpid(); char *temp1 = NULL, *temp2 = NULL; bool space_available = false; uint64_t amount_space_avail = 0; /* the real size of the shared memory segment. this includes enough space * to store our segment header. */ size_t real_size = size + sizeof(opal_shmem_seg_hdr_t); opal_shmem_seg_hdr_t *seg_hdrp = NULL; HANDLE hMapObject = INVALID_HANDLE_VALUE; LPVOID lpvMem = NULL; /* init the contents of opal_shmem_ds_t */ shmem_ds_reset(ds_buf); /* On Windows the shared file will be created by the OS directly on the * system ressources. Therefore, no file get involved in the operation. * However, a unique key should be used as name for the shared memory object * in order to allow all processes to access the same unique shared memory * region. The key will be obtained from the original file_name by replacing * all path separator occurences by '/' (as '\' is not allowed on the object * name). */ temp1 = strdup(file_name); if (NULL == temp1) { return OPAL_ERR_OUT_OF_RESOURCE; } temp2 = temp1; while (NULL != (temp2 = strchr(temp2, OPAL_PATH_SEP[0])) ) { *temp2 = '/'; } /* let's make sure we have enough space for the backing file */ if (OPAL_SUCCESS != (rc = enough_space(temp1, real_size, &amount_space_avail, &space_available))) { opal_output(0, "shmem: windows: an error occurred while determining " "whether or not %s could be created.", temp1); /* rc is set */ free(temp1); goto out; } if (!space_available) { char hn[MAXHOSTNAMELEN]; gethostname(hn, MAXHOSTNAMELEN - 1); hn[MAXHOSTNAMELEN - 1] = '\0'; rc = OPAL_ERR_OUT_OF_RESOURCE; opal_show_help("help-opal-shmem-windows.txt", "target full", 1, temp1, hn, (unsigned long)real_size, (unsigned long long)amount_space_avail); free(temp1); goto out; } /* enough space is available, so create the segment */ /* use paging file */ hMapObject = CreateFileMapping(INVALID_HANDLE_VALUE, /* no security attributes */ NULL, /* read/write access */ PAGE_READWRITE, /* size: high 32-bits */ 0, /* size: low 32-bits */ (DWORD)real_size, /* name of map object */ temp1); if (NULL == hMapObject) { rc = OPAL_ERROR; goto out; } /* Get a pointer to the file-mapped shared memory. */ lpvMem = MapViewOfFile(hMapObject, /* object to map view of */ FILE_MAP_WRITE, /* read/write access */ 0, /* high offset: map from */ 0, /* low offset: beginning */ 0); /* default: map entire file */ if (NULL == lpvMem) { rc = OPAL_ERROR; goto out; } seg_hdrp = (opal_shmem_seg_hdr_t *)lpvMem; /* all is well */ /* -- initialize the shared memory segment -- */ opal_atomic_rmb(); /* init segment lock */ opal_atomic_init(&seg_hdrp->lock, OPAL_ATOMIC_UNLOCKED); /* i was the creator of this segment, so note that fact */ seg_hdrp->cpid = my_pid; opal_atomic_wmb(); /* -- initialize the contents of opal_shmem_ds_t -- */ ds_buf->seg_cpid = my_pid; ds_buf->seg_size = real_size; ds_buf->seg_base_addr = (unsigned char *)seg_hdrp; /* update path change in ds_buf */ memcpy(ds_buf->seg_name, temp1, OPAL_PATH_MAX); /* relase the temporary file name */ free(temp1); /* set "valid" bit because setment creation was successful */ OPAL_SHMEM_DS_SET_VALID(ds_buf); OPAL_OUTPUT_VERBOSE( (70, opal_shmem_base_output, "%s: %s: create successful " "(id: %d, size: %"PRIsize_t", name: %s)\n", mca_shmem_windows_component.super.base_version.mca_type_name, mca_shmem_windows_component.super.base_version.mca_component_name, ds_buf->seg_id, ds_buf->seg_size, ds_buf->seg_name) ); out: /* an error occured, so invalidate the shmem object and munmap if needed */ if (OPAL_SUCCESS != rc) { if (NULL != seg_hdrp) { UnmapViewOfFile((LPVOID)seg_hdrp); } shmem_ds_reset(ds_buf); } return rc; }