- xbt_os_mutex_t res = xbt_new(s_xbt_os_mutex_t, 1);
- int errcode;
-
- if ((errcode = pthread_mutex_init(&(res->m), NULL)))
- THROWF(system_error, errcode, "pthread_mutex_init() failed: %s",
- strerror(errcode));
-
- return res;
-}
-
-void xbt_os_mutex_acquire(xbt_os_mutex_t mutex)
-{
- int errcode;
-
- if ((errcode = pthread_mutex_lock(&(mutex->m))))
- THROWF(system_error, errcode, "pthread_mutex_lock(%p) failed: %s",
- mutex, strerror(errcode));
-}
-
-
-void xbt_os_mutex_timedacquire(xbt_os_mutex_t mutex, double delay)
-{
- int errcode;
-
- if (delay < 0) {
- xbt_os_mutex_acquire(mutex);
-
- } else if (delay == 0) {
- errcode = pthread_mutex_trylock(&(mutex->m));
-
- switch (errcode) {
- case 0:
- return;
- case ETIMEDOUT:
- THROWF(timeout_error, 0, "mutex %p not ready", mutex);
- default:
- THROWF(system_error, errcode,
- "xbt_os_mutex_timedacquire(%p) failed: %s", mutex,
- strerror(errcode));
- }
-
-
- } else {
-
-#ifdef HAVE_MUTEX_TIMEDLOCK
- struct timespec ts_end;
- double end = delay + xbt_os_time();
-
- ts_end.tv_sec = (time_t) floor(end);
- ts_end.tv_nsec = (long) ((end - ts_end.tv_sec) * 1000000000);
- XBT_DEBUG("pthread_mutex_timedlock(%p,%p)", &(mutex->m), &ts_end);
-
- errcode = pthread_mutex_timedlock(&(mutex->m), &ts_end);
-
-#else /* Well, let's reimplement it since those lazy libc dudes didn't */
- double start = xbt_os_time();
- do {
- errcode = pthread_mutex_trylock(&(mutex->m));
- if (errcode == EBUSY)
- xbt_os_thread_yield();
- } while (errcode == EBUSY && xbt_os_time() - start < delay);
-
- if (errcode == EBUSY)
- errcode = ETIMEDOUT;
-
-#endif /* HAVE_MUTEX_TIMEDLOCK */
-
- switch (errcode) {
- case 0:
- return;
-
- case ETIMEDOUT:
- THROWF(timeout_error, delay,
- "mutex %p wasn't signaled before timeout (%f)", mutex, delay);
-
- default:
- THROWF(system_error, errcode,
- "pthread_mutex_timedlock(%p,%f) failed: %s", mutex, delay,
- strerror(errcode));
- }
- }
-}
-
-void xbt_os_mutex_release(xbt_os_mutex_t mutex)
-{
- int errcode;
-
- if ((errcode = pthread_mutex_unlock(&(mutex->m))))
- THROWF(system_error, errcode, "pthread_mutex_unlock(%p) failed: %s",
- mutex, strerror(errcode));
-}
-
-void xbt_os_mutex_destroy(xbt_os_mutex_t mutex)
-{
- int errcode;
-
- if (!mutex)
- return;
-
- if ((errcode = pthread_mutex_destroy(&(mutex->m))))
- THROWF(system_error, errcode, "pthread_mutex_destroy(%p) failed: %s",
- mutex, strerror(errcode));
- free(mutex);
-}
-
-/***** condition related functions *****/
-typedef struct xbt_os_cond_ {
- /* KEEP IT IN SYNC WITH xbt_thread.c */
- pthread_cond_t c;
-} s_xbt_os_cond_t;
-
-xbt_os_cond_t xbt_os_cond_init(void)
-{
- xbt_os_cond_t res = xbt_new(s_xbt_os_cond_t, 1);
- int errcode;
- if ((errcode = pthread_cond_init(&(res->c), NULL)))
- THROWF(system_error, errcode, "pthread_cond_init() failed: %s",
- strerror(errcode));
-
- return res;
-}
-
-void xbt_os_cond_wait(xbt_os_cond_t cond, xbt_os_mutex_t mutex)
-{
- int errcode;
- if ((errcode = pthread_cond_wait(&(cond->c), &(mutex->m))))
- THROWF(system_error, errcode, "pthread_cond_wait(%p,%p) failed: %s",
- cond, mutex, strerror(errcode));
-}
-
-
-void xbt_os_cond_timedwait(xbt_os_cond_t cond, xbt_os_mutex_t mutex,
- double delay)
-{
- int errcode;
- struct timespec ts_end;
- double end = delay + xbt_os_time();
-
- if (delay < 0) {
- xbt_os_cond_wait(cond, mutex);
- } else {
- ts_end.tv_sec = (time_t) floor(end);
- ts_end.tv_nsec = (long) ((end - ts_end.tv_sec) * 1000000000);
- XBT_DEBUG("pthread_cond_timedwait(%p,%p,%p)", &(cond->c), &(mutex->m),
- &ts_end);
- switch ((errcode =
- pthread_cond_timedwait(&(cond->c), &(mutex->m), &ts_end))) {
- case 0:
- return;
- case ETIMEDOUT:
- THROWF(timeout_error, errcode,
- "condition %p (mutex %p) wasn't signaled before timeout (%f)",
- cond, mutex, delay);
- default:
- THROWF(system_error, errcode,
- "pthread_cond_timedwait(%p,%p,%f) failed: %s", cond, mutex,
- delay, strerror(errcode));
- }
- }
-}
-
-void xbt_os_cond_signal(xbt_os_cond_t cond)
-{
- int errcode;
- if ((errcode = pthread_cond_signal(&(cond->c))))
- THROWF(system_error, errcode, "pthread_cond_signal(%p) failed: %s",
- cond, strerror(errcode));
-}
-
-void xbt_os_cond_broadcast(xbt_os_cond_t cond)
-{
- int errcode;
- if ((errcode = pthread_cond_broadcast(&(cond->c))))
- THROWF(system_error, errcode, "pthread_cond_broadcast(%p) failed: %s",
- cond, strerror(errcode));
-}
-
-void xbt_os_cond_destroy(xbt_os_cond_t cond)
-{
- int errcode;
-
- if (!cond)
- return;
-
- if ((errcode = pthread_cond_destroy(&(cond->c))))
- THROWF(system_error, errcode, "pthread_cond_destroy(%p) failed: %s",
- cond, strerror(errcode));
- free(cond);
-}
-
-void *xbt_os_thread_getparam(void)
-{
- xbt_os_thread_t t = xbt_os_thread_self();
- return t ? t->param : NULL;
-}
-
-typedef struct xbt_os_sem_ {
-#ifndef HAVE_SEM_INIT
- char *name;
-#endif
- sem_t s;
- sem_t *ps;
-} s_xbt_os_sem_t;
-
-#ifndef SEM_FAILED
-#define SEM_FAILED (-1)
-#endif
-
-xbt_os_sem_t xbt_os_sem_init(unsigned int value)
-{
- xbt_os_sem_t res = xbt_new(s_xbt_os_sem_t, 1);
-
- /* On some systems (MAC OS X), only the stub of sem_init is to be found.
- * Any attempt to use it leads to ENOSYS (function not implemented).
- * If such a prehistoric system is detected, do the job with sem_open instead
- */
-#ifdef HAVE_SEM_INIT
- if (sem_init(&(res->s), 0, value) != 0)
- THROWF(system_error, errno, "sem_init() failed: %s", strerror(errno));
- res->ps = &(res->s);
-
-#else /* damn, no sem_init(). Reimplement it */
-
- xbt_os_mutex_acquire(next_sem_ID_lock);
- res->name = bprintf("/%d", ++next_sem_ID);
- xbt_os_mutex_release(next_sem_ID_lock);
-
- res->ps = sem_open(res->name, O_CREAT, 0644, value);
- if ((res->ps == (sem_t *) SEM_FAILED) && (errno == ENAMETOOLONG)) {
- /* Old darwins only allow 13 chars. Did you create *that* amount of semaphores? */
- res->name[13] = '\0';
- res->ps = sem_open(res->name, O_CREAT, 0644, value);
- }
- if ((res->ps == (sem_t *) SEM_FAILED))
- THROWF(system_error, errno, "sem_open() failed: %s", strerror(errno));
-
- /* Remove the name from the semaphore namespace: we never join on it */
- if (sem_unlink(res->name) < 0)
- THROWF(system_error, errno, "sem_unlink() failed: %s",
- strerror(errno));
-
-#endif
-
- return res;
-}
-
-void xbt_os_sem_acquire(xbt_os_sem_t sem)
-{
- if (!sem)
- THROWF(arg_error, EINVAL, "Cannot acquire of the NULL semaphore");
- if (sem_wait(sem->ps) < 0)
- THROWF(system_error, errno, "sem_wait() failed: %s", strerror(errno));
-}
-
-void xbt_os_sem_timedacquire(xbt_os_sem_t sem, double delay)
-{
- int errcode;
-
- if (!sem)
- THROWF(arg_error, EINVAL, "Cannot acquire of the NULL semaphore");
-
- if (delay < 0) {
- xbt_os_sem_acquire(sem);
- } else if (delay == 0) {
- errcode = sem_trywait(sem->ps);
-
- switch (errcode) {
- case 0:
- return;
- case ETIMEDOUT:
- THROWF(timeout_error, 0, "semaphore %p not ready", sem);
- default:
- THROWF(system_error, errcode,
- "xbt_os_sem_timedacquire(%p) failed: %s", sem,
- strerror(errcode));
- }
-
- } else {
-#ifdef HAVE_SEM_WAIT
- struct timespec ts_end;
- double end = delay + xbt_os_time();
-
- ts_end.tv_sec = (time_t) floor(end);
- ts_end.tv_nsec = (long) ((end - ts_end.tv_sec) * 1000000000);
- XBT_DEBUG("sem_timedwait(%p,%p)", sem->ps, &ts_end);
- errcode = sem_timedwait(sem->s, &ts_end);
-
-#else /* Okay, reimplement this function then */
- double start = xbt_os_time();
- do {
- errcode = sem_trywait(sem->ps);
- if (errcode == EBUSY)
- xbt_os_thread_yield();
- } while (errcode == EBUSY && xbt_os_time() - start < delay);
-
- if (errcode == EBUSY)
- errcode = ETIMEDOUT;
-#endif
-
- switch (errcode) {
- case 0:
- return;
-
- case ETIMEDOUT:
- THROWF(timeout_error, delay,
- "semaphore %p wasn't signaled before timeout (%f)", sem,
- delay);
-
- default:
- THROWF(system_error, errcode, "sem_timedwait(%p,%f) failed: %s", sem,
- delay, strerror(errcode));
- }
- }
-}
-
-void xbt_os_sem_release(xbt_os_sem_t sem)
-{
- if (!sem)
- THROWF(arg_error, EINVAL, "Cannot release of the NULL semaphore");
-
- if (sem_post(sem->ps) < 0)
- THROWF(system_error, errno, "sem_post() failed: %s", strerror(errno));
-}
-
-void xbt_os_sem_destroy(xbt_os_sem_t sem)
-{
- if (!sem)
- THROWF(arg_error, EINVAL, "Cannot destroy the NULL sempahore");
-
-#ifdef HAVE_SEM_INIT
- if (sem_destroy(sem->ps) < 0)
- THROWF(system_error, errno, "sem_destroy() failed: %s",
- strerror(errno));
-#else
- if (sem_close(sem->ps) < 0)
- THROWF(system_error, errno, "sem_close() failed: %s", strerror(errno));
- xbt_free(sem->name);
-
-#endif
- xbt_free(sem);
-}
-
-void xbt_os_sem_get_value(xbt_os_sem_t sem, int *svalue)
-{
- if (!sem)
- THROWF(arg_error, EINVAL,
- "Cannot get the value of the NULL semaphore");
-
- if (sem_getvalue(&(sem->s), svalue) < 0)
- THROWF(system_error, errno, "sem_getvalue() failed: %s",
- strerror(errno));
-}
-
-/* ********************************* WINDOWS IMPLEMENTATION ************************************ */
-
-#elif defined(_XBT_WIN32)
-
-#include <math.h>
-
-typedef struct xbt_os_thread_ {
- char *name;
- HANDLE handle; /* the win thread handle */
- unsigned long id; /* the win thread id */
- pvoid_f_pvoid_t start_routine;
- void *param;
- void *extra_data;
-} s_xbt_os_thread_t;
-
-/* so we can specify the size of the stack of the threads */
-#ifndef STACK_SIZE_PARAM_IS_A_RESERVATION
-#define STACK_SIZE_PARAM_IS_A_RESERVATION 0x00010000
-#endif
-
-/* the default size of the stack of the threads (in bytes)*/
-#define XBT_DEFAULT_THREAD_STACK_SIZE 4096
-static int stack_size=0;
-/* key to the TLS containing the xbt_os_thread_t structure */
-static unsigned long xbt_self_thread_key;
-
-void xbt_os_thread_mod_preinit(void)
-{
- xbt_self_thread_key = TlsAlloc();
-}
-
-void xbt_os_thread_mod_postexit(void)
-{
-
- if (!TlsFree(xbt_self_thread_key))
- THROWF(system_error, (int) GetLastError(),
- "TlsFree() failed to cleanup the thread submodule");
-}
-
-int xbt_os_thread_atfork(void (*prepare)(void),
- void (*parent)(void), void (*child)(void))
-{
- return 0;
-}
-
-static DWORD WINAPI wrapper_start_routine(void *s)
-{
- xbt_os_thread_t t = (xbt_os_thread_t) s;
- DWORD *rv;
-
- if (!TlsSetValue(xbt_self_thread_key, t))
- THROWF(system_error, (int) GetLastError(),
- "TlsSetValue of data describing the created thread failed");
-
- rv = (DWORD *) ((t->start_routine) (t->param));
-
- return rv ? *rv : 0;
-
-}
-
-
-xbt_os_thread_t xbt_os_thread_create(const char *name,
- pvoid_f_pvoid_t start_routine,
- void *param,
- void *extra_data)
-{
-
- xbt_os_thread_t t = xbt_new(s_xbt_os_thread_t, 1);
-
- t->name = xbt_strdup(name);
- t->start_routine = start_routine;
- t->param = param;
- t->extra_data = extra_data;
- t->handle = CreateThread(NULL, stack_size==0 ? XBT_DEFAULT_THREAD_STACK_SIZE : stack_size,
- (LPTHREAD_START_ROUTINE) wrapper_start_routine,
- t, STACK_SIZE_PARAM_IS_A_RESERVATION, &(t->id));
-
- if (!t->handle) {
- xbt_free(t);
- THROWF(system_error, (int) GetLastError(), "CreateThread failed");
- }
-
- return t;
-}
-
-void xbt_os_thread_setstacksize(int size)
-{
- stack_size = size;
-}
-
-const char *xbt_os_thread_name(xbt_os_thread_t t)
-{
- return t->name;
-}
-
-const char *xbt_os_thread_self_name(void)
-{
- xbt_os_thread_t t = xbt_os_thread_self();
- return t ? t->name : "main";
-}
-
-void xbt_os_thread_join(xbt_os_thread_t thread, void **thread_return)
-{
-
- if (WAIT_OBJECT_0 != WaitForSingleObject(thread->handle, INFINITE))
- THROWF(system_error, (int) GetLastError(),
- "WaitForSingleObject failed");
-
- if (thread_return) {
-
- if (!GetExitCodeThread(thread->handle, (DWORD *) (*thread_return)))
- THROWF(system_error, (int) GetLastError(),
- "GetExitCodeThread failed");
- }
-
- CloseHandle(thread->handle);
-
- free(thread->name);
-
- free(thread);
-}
-
-void xbt_os_thread_exit(int *retval)
-{
- if (retval)
- ExitThread(*retval);
- else
- ExitThread(0);
-}
-
-void xbt_os_thread_key_create(xbt_os_thread_key_t* key) {
-
- *key = TlsAlloc();
-}
-
-void xbt_os_thread_set_specific(xbt_os_thread_key_t key, void* value) {
-
- if (!TlsSetValue(key, value))
- THROWF(system_error, (int) GetLastError(), "TlsSetValue() failed");
-}
-
-void* xbt_os_thread_get_specific(xbt_os_thread_key_t key) {
- return TlsGetValue(key);
-}
-
-void xbt_os_thread_detach(xbt_os_thread_t thread)
-{
- THROW_UNIMPLEMENTED;
-}
-
-
-xbt_os_thread_t xbt_os_thread_self(void)
-{
- return TlsGetValue(xbt_self_thread_key);
-}