1 /* Copyright (c) 2013-2014. The SimGrid Team.
2 * All rights reserved. */
4 /* This program is free software; you can redistribute it and/or modify it
5 * under the terms of the license (GNU LGPL) which comes with this package. */
9 #include "msg_private.h"
10 #include "xbt/sysdep.h"
11 #include "xbt/synchro_core.h"
14 XBT_LOG_NEW_DEFAULT_SUBCATEGORY(msg_synchro, msg, "Logging specific to MSG (synchro)");
16 /** @addtogroup msg_synchro
21 /** @brief creates a semaphore object of the given initial capacity */
22 msg_sem_t MSG_sem_init(int initial_value) {
23 return simcall_sem_init(initial_value);
26 /** @brief locks on a semaphore object */
27 void MSG_sem_acquire(msg_sem_t sem) {
28 simcall_sem_acquire(sem);
31 /** @brief locks on a semaphore object up until the provided timeout expires */
32 msg_error_t MSG_sem_acquire_timeout(msg_sem_t sem, double timeout) {
33 msg_error_t res = MSG_OK;
35 simcall_sem_acquire_timeout(sem,timeout);
37 if (e.category == timeout_error)
44 /** @brief releases the semaphore object */
45 void MSG_sem_release(msg_sem_t sem) {
46 simcall_sem_release(sem);
49 int MSG_sem_get_capacity(msg_sem_t sem) {
50 return simcall_sem_get_capacity(sem);
53 void MSG_sem_destroy(msg_sem_t sem) {
54 SIMIX_sem_destroy(sem);
57 /** @brief returns a boolean indicating if this semaphore would block at this very specific time
59 * Note that the returned value may be wrong right after the function call, when you try to use it...
60 * But that's a classical semaphore issue, and SimGrid's semaphore are not different to usual ones here.
62 int MSG_sem_would_block(msg_sem_t sem) {
63 return simcall_sem_would_block(sem);
66 /** @brief Initializes a barrier, with count elements */
67 msg_bar_t MSG_barrier_init(unsigned int count) {
68 return (msg_bar_t)xbt_barrier_init(count);
71 /** @brief Initializes a barrier, with count elements */
72 void MSG_barrier_destroy(msg_bar_t bar) {
73 xbt_barrier_destroy((xbt_bar_t)bar);
76 /** @brief Performs a barrier already initialized */
77 int MSG_barrier_wait(msg_bar_t bar) {
78 if(xbt_barrier_wait((xbt_bar_t)bar) == XBT_BARRIER_SERIAL_PROCESS)
79 return MSG_BARRIER_SERIAL_PROCESS;