X-Git-Url: http://info.iut-bm.univ-fcomte.fr/pub/gitweb/simgrid.git/blobdiff_plain/c81b88b7af71898176fabb4177118edfc3a70c22..a453a5e831415fd88e602944c84f967e7eb8530b:/src/xbt/xbt_os_thread.c

diff --git a/src/xbt/xbt_os_thread.c b/src/xbt/xbt_os_thread.c
index 73fe3a4fdc..122446c3d7 100644
--- a/src/xbt/xbt_os_thread.c
+++ b/src/xbt/xbt_os_thread.c
@@ -13,6 +13,7 @@
 #include "xbt/sysdep.h"
 #include "xbt/ex.h"
 #include "portable.h"
+#include "xbt/xbt_os_time.h" /* Portable time facilities */
 #include "xbt/xbt_os_thread.h" /* This module */
 #include "xbt_modinter.h" /* Initialization/finalization of this module */
 
@@ -23,7 +24,6 @@
 #include <pthread.h>
 
 typedef struct xbt_os_thread_ {
-  /* KEEP IT IN SYNC WITH xbt_thread.c */
    pthread_t t;
    void *param;
    pvoid_f_pvoid_t *start_routine;
@@ -31,6 +31,7 @@ typedef struct xbt_os_thread_ {
 
 /* thread-specific data containing the xbt_os_thread_t structure */
 static pthread_key_t xbt_self_thread_key;
+static int thread_mod_inited = 0;
 
 /* frees the xbt_os_thread_t corresponding to the current thread */
 static void xbt_os_thread_free_thread_data(void*d){
@@ -40,8 +41,13 @@ static void xbt_os_thread_free_thread_data(void*d){
 void xbt_os_thread_mod_init(void) {
    int errcode;
    
+   if (thread_mod_inited)
+     return;
+   
    if ((errcode=pthread_key_create(&xbt_self_thread_key, NULL)))
      THROW0(system_error,errcode,"pthread_key_create failed for xbt_self_thread_key");
+   
+   thread_mod_inited = 1;
 }
 void xbt_os_thread_mod_exit(void) {
    /* FIXME: don't try to free our key on shutdown. Valgrind detects no leak if we don't, and whine if we try to */
@@ -59,7 +65,6 @@ static void * wrapper_start_routine(void *s) {
     THROW0(system_error,errcode,"pthread_setspecific failed for xbt_self_thread_key");   
   return t->start_routine(t->param);
 }
-
 xbt_os_thread_t xbt_os_thread_create(pvoid_f_pvoid_t start_routine,
 				     void* param)  {
    int errcode;
@@ -91,13 +96,16 @@ void xbt_os_thread_exit(int *retval) {
 }
 
 xbt_os_thread_t xbt_os_thread_self(void) {
-   return pthread_getspecific(xbt_self_thread_key);
+   return thread_mod_inited ? pthread_getspecific(xbt_self_thread_key):NULL;
 }
 
 #include <sched.h>
 void xbt_os_thread_yield(void) {
    sched_yield();
 }
+void xbt_os_thread_cancel(xbt_os_thread_t t) {
+   pthread_cancel(t->t);
+}
 /****** mutex related functions ******/
 typedef struct xbt_os_mutex_ {
   /* KEEP IT IN SYNC WITH xbt_thread.c */
@@ -165,6 +173,24 @@ void xbt_os_cond_wait(xbt_os_cond_t cond, xbt_os_mutex_t mutex) {
 	    cond,mutex, strerror(errcode));
 }
 
+#include <time.h>
+#include <math.h>
+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();
+   ts_end.tv_sec = (time_t) floor(end);
+   ts_end.tv_nsec = (long)  ( ( end - ts_end.tv_sec) * 1000000000);
+   switch ( (errcode=pthread_cond_timedwait(&(cond->c),&(mutex->m), &ts_end)) ) {
+    case ETIMEDOUT:
+     THROW3(timeout_error,errcode,"condition %p (mutex %p) wasn't signaled before timeout (%f)",
+	    cond,mutex, delay);
+    default:
+     THROW4(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))))
@@ -189,12 +215,16 @@ void xbt_os_cond_destroy(xbt_os_cond_t cond){
    free(cond);
 }
 
+void *xbt_os_thread_getparam(void) {
+   xbt_os_thread_t t = xbt_os_thread_self();
+   return t?t->param:NULL;
+}
+
 /* ********************************* WINDOWS IMPLEMENTATION ************************************ */
 
 #elif defined(WIN32)
 
 typedef struct xbt_os_thread_ {
-  /* KEEP IT IN SYNC WITH xbt_thread */
   HANDLE handle;                  /* the win thread handle        */
   unsigned long id;               /* the win thread id            */
   pvoid_f_pvoid_t *start_routine;
@@ -270,9 +300,18 @@ xbt_os_thread_t xbt_os_thread_self(void) {
    return TlsGetValue(xbt_self_thread_key);
 }
 
+void *xbt_os_thread_getparam(void) {
+   xbt_os_thread_t t = xbt_os_thread_self();
+   return t->param;
+}
+
+
 void xbt_os_thread_yield(void) {
     Sleep(0);
 }
+void xbt_os_thread_cancel(xbt_os_thread_t t) {
+   THROW_UNIMPLEMENTED;
+}
 
 /****** mutex related functions ******/
 typedef struct xbt_os_mutex_ {
@@ -396,6 +435,9 @@ void xbt_os_cond_wait(xbt_os_cond_t cond, xbt_os_mutex_t mutex) {
    /* relock the mutex associated with the condition in accordance with the posix thread specification */
    EnterCriticalSection (& mutex->lock);
 }
+void xbt_os_cond_timedwait(xbt_os_cond_t cond, xbt_os_mutex_t mutex, double delay) {
+   THROW_UNIMPLEMENTED;
+}
 
 void xbt_os_cond_signal(xbt_os_cond_t cond) {
    int have_waiters;