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. */
7 #include "msg_private.h"
8 #include "xbt/sysdep.h"
9 #include "xbt/synchro_core.h"
12 XBT_LOG_NEW_DEFAULT_SUBCATEGORY(msg_synchro, msg, "Logging specific to MSG (synchro)");
14 /** @addtogroup msg_synchro
19 /** @brief creates a semaphore object of the given initial capacity */
20 msg_sem_t MSG_sem_init(int initial_value) {
21 return simcall_sem_init(initial_value);
24 /** @brief locks on a semaphore object */
25 void MSG_sem_acquire(msg_sem_t sem) {
26 simcall_sem_acquire(sem);
29 /** @brief locks on a semaphore object up until the provided timeout expires */
30 msg_error_t MSG_sem_acquire_timeout(msg_sem_t sem, double timeout) {
31 msg_error_t res = MSG_OK;
33 simcall_sem_acquire_timeout(sem,timeout);
35 if (e.category == timeout_error)
42 /** @brief releases the semaphore object */
43 void MSG_sem_release(msg_sem_t sem) {
44 simcall_sem_release(sem);
47 void MSG_sem_get_capacity(msg_sem_t sem) {
48 simcall_sem_get_capacity(sem);
51 void MSG_sem_destroy(msg_sem_t sem) {
52 SIMIX_sem_destroy(sem);
55 /** @brief returns a boolean indicating if this semaphore would block at this very specific time
57 * Note that the returned value may be wrong right after the function call, when you try to use it...
58 * But that's a classical semaphore issue, and SimGrid's semaphore are not different to usual ones here.
60 int MSG_sem_would_block(msg_sem_t sem) {
61 return simcall_sem_would_block(sem);
64 /** @brief Initializes a barrier, with count elements */
65 msg_bar_t MSG_barrier_init(unsigned int count) {
66 return (msg_bar_t)xbt_barrier_init(count);
69 /** @brief Initializes a barrier, with count elements */
70 void MSG_barrier_destroy(msg_bar_t bar) {
71 xbt_barrier_destroy((xbt_bar_t)bar);
74 /** @brief Performs a barrier already initialized */
75 int MSG_barrier_wait(msg_bar_t bar) {
76 if(xbt_barrier_wait((xbt_bar_t)bar) == XBT_BARRIER_SERIAL_PROCESS)
77 return MSG_BARRIER_SERIAL_PROCESS;