static xbt_swag_t context_to_destroy = NULL;
static xbt_swag_t context_living = NULL;
-#ifndef USE_PTHREADS /* USE_PTHREADS and USE_CONTEXT are exclusive */
+#if (!defined(USE_PTHREADS) && !defined(USE_WIN_THREADS)) /* USE_PTHREADS and USE_CONTEXT are exclusive */
# ifndef USE_UCONTEXT
/* don't want to play with conditional compilation in automake tonight, sorry.
include directly the c file from here when needed. */
static void __xbt_context_yield(xbt_context_t context)
{
- xbt_assert0(current_context,"You have to call context_init() first.");
-
- DEBUG2("--------- current_context (%p) is yielding to context(%p) ---------",
- current_context,context);
-
-#ifdef USE_PTHREADS
- if (context) {
- xbt_context_t self = current_context;
- DEBUG0("**** Locking ****");
- pthread_mutex_lock(&(context->mutex));
- DEBUG0("**** Updating current_context ****");
- current_context = context;
- DEBUG0("**** Releasing the prisonner ****");
- pthread_cond_signal(&(context->cond));
- DEBUG0("**** Going to jail ****");
- pthread_cond_wait(&(context->cond), &(context->mutex));
- DEBUG0("**** Unlocking ****");
- pthread_mutex_unlock(&(context->mutex));
- DEBUG0("**** Updating current_context ****");
- current_context = self;
- }
-#else
- if(current_context)
- VOIRP(current_context->save);
-
- VOIRP(context);
- if(context) VOIRP(context->save);
- if (context) {
-
- int return_value = 0;
-
- if(context->save==NULL) {
- DEBUG0("**** Yielding to somebody else ****");
- DEBUG2("Saving current_context value (%p) to context(%p)->save",current_context,context);
- context->save = current_context ;
- DEBUG1("current_context becomes context(%p) ",context);
- current_context = context ;
- DEBUG1("Current position memorized (context->save). Jumping to context (%p)",context);
- return_value = swapcontext (&(context->save->uc), &(context->uc));
- xbt_assert0((return_value==0),"Context swapping failure");
- DEBUG1("I am (%p). Coming back\n",context);
- } else {
- xbt_context_t old_context = context->save ;
- DEBUG0("**** Back ! ****");
- DEBUG2("Setting current_context (%p) to context(%p)->save",current_context,context);
- current_context = context->save ;
- DEBUG1("Setting context(%p)->save to NULL",context);
- context->save = NULL ;
- DEBUG2("Current position memorized (%p). Jumping to context (%p)",context,old_context);
- return_value = swapcontext (&(context->uc), &(old_context->uc));
- xbt_assert0((return_value==0),"Context swapping failure");
- DEBUG1("I am (%p). Coming back\n",context);
- }
- }
-#endif
- return;
+ xbt_assert0(current_context,"You have to call context_init() first.");
+
+ DEBUG2("--------- current_context (%p) is yielding to context(%p) ---------",current_context,context);
+
+ #ifdef USE_PTHREADS
+ if (context){
+ xbt_context_t self = current_context;
+ DEBUG0("**** Locking ****");
+ pthread_mutex_lock(&(context->mutex));
+ DEBUG0("**** Updating current_context ****");
+ current_context = context;
+ DEBUG0("**** Releasing the prisonner ****");
+ pthread_cond_signal(&(context->cond));
+ DEBUG0("**** Going to jail ****");
+ pthread_cond_wait(&(context->cond), &(context->mutex));
+ DEBUG0("**** Unlocking ****");
+ pthread_mutex_unlock(&(context->mutex));
+ DEBUG0("**** Updating current_context ****");
+ current_context = self;
+ }
+ #elif defined(USE_WIN_THREADS)
+ if (context){
+ xbt_context_t self = current_context;
+ DEBUG0("**** Locking ****");
+ win_thread_mutex_lock(&(context->mutex));
+ DEBUG0("**** Updating current_context ****");
+ current_context = context;
+ DEBUG0("**** Releasing the prisonner ****");
+ win_thread_cond_signal(&(context->cond));
+ DEBUG0("**** Going to jail ****");
+ win_thread_cond_wait(&(context->cond), &(context->mutex));
+ DEBUG0("**** Unlocking ****");
+ win_thread_mutex_unlock(&(context->mutex));
+ DEBUG0("**** Updating current_context ****");
+ current_context = self;
+
+ }
+ #else
+ if(current_context)
+ VOIRP(current_context->save);
+
+ VOIRP(context);
+
+ if(context)
+ VOIRP(context->save);
+
+ if (context){
+
+ int return_value = 0;
+
+ if(context->save==NULL){
+
+ DEBUG0("**** Yielding to somebody else ****");
+ DEBUG2("Saving current_context value (%p) to context(%p)->save",current_context,context);
+ context->save = current_context ;
+ DEBUG1("current_context becomes context(%p) ",context);
+ current_context = context ;
+ DEBUG1("Current position memorized (context->save). Jumping to context (%p)",context);
+ return_value = swapcontext (&(context->save->uc), &(context->uc));
+ xbt_assert0((return_value==0),"Context swapping failure");
+ DEBUG1("I am (%p). Coming back\n",context);
+ } else {
+ xbt_context_t old_context = context->save ;
+ DEBUG0("**** Back ! ****");
+ DEBUG2("Setting current_context (%p) to context(%p)->save",current_context,context);
+ current_context = context->save ;
+ DEBUG1("Setting context(%p)->save to NULL",context);
+ context->save = NULL ;
+ DEBUG2("Current position memorized (%p). Jumping to context (%p)",context,old_context);
+ return_value = swapcontext (&(context->uc), &(old_context->uc));
+ xbt_assert0((return_value==0),"Context swapping failure");
+ DEBUG1("I am (%p). Coming back\n",context);
+
+ }
+ }
+ #endif
+ return;
}
static void xbt_context_destroy(xbt_context_t context)
{
-#ifdef USE_PTHREADS
- xbt_free(context->thread);
- pthread_mutex_destroy(&(context->mutex));
- pthread_cond_destroy(&(context->cond));
-#endif
- if(context->exception) free(context->exception);
-
-#ifdef USE_WIN_CONTEXT
- if(context->uc.uc_stack.ss_sp)
- free (context->uc.uc_stack.ss_sp);
-#endif
+ #ifdef USE_PTHREADS
+ xbt_free(context->thread);
+ pthread_mutex_destroy(&(context->mutex));
+ pthread_cond_destroy(&(context->cond));
+ #elif defined(USE_WIN_THREADS)
+ /*xbt_free(context->thread);*/
+
+ if(context->mutex)
+ win_thread_mutex_destroy(&(context->mutex));
+
+
+ if(context->cond)
+ win_thread_cond_destroy(&(context->cond));
+
+
+ #endif
- free(context);
- return;
+ if(context->exception)
+ free(context->exception);
+
+ #ifdef USE_WIN_CONTEXT
+ if(context->uc.uc_stack.ss_sp)
+ free (context->uc.uc_stack.ss_sp);
+ #endif
+
+ free(context);
+ return;
}
-
+
static void __context_exit(xbt_context_t context ,int value)
{
- int i;
- DEBUG0("Freeing arguments");
- for(i=0;i<context->argc; i++)
- if(context->argv[i]) free(context->argv[i]);
- if(context->argv) free(context->argv);
-
- if(context->cleanup_func) {
- DEBUG0("Calling cleanup function");
- context->cleanup_func(context->cleanup_arg);
- }
-
- DEBUG0("Putting context in the to_destroy set");
- xbt_swag_remove(context, context_living);
- xbt_swag_insert(context, context_to_destroy);
- DEBUG0("Context put in the to_destroy set");
-
- DEBUG0("Yielding");
-#ifdef USE_PTHREADS
- DEBUG0("**** Locking ****");
- pthread_mutex_lock(&(context->mutex));
- DEBUG0("**** Updating current_context ****");
- current_context = context;
- DEBUG0("**** Releasing the prisonner ****");
- pthread_cond_signal(&(context->cond));
- DEBUG0("**** Unlocking ****");
- pthread_mutex_unlock(&(context->mutex));
- DEBUG0("**** Exiting ****");
- pthread_exit(0);
-#else
- __xbt_context_yield(context);
-#endif
- xbt_assert0(0,"You can't be here!");
+ int i;
+ DEBUG0("Freeing arguments");
+ for(i=0;i<context->argc; i++)
+ if(context->argv[i])
+ free(context->argv[i]);
+
+ if(context->argv)
+ free(context->argv);
+
+ if(context->cleanup_func){
+ DEBUG0("Calling cleanup function");
+ context->cleanup_func(context->cleanup_arg);
+ }
+
+ DEBUG0("Putting context in the to_destroy set");
+ xbt_swag_remove(context, context_living);
+ xbt_swag_insert(context, context_to_destroy);
+ DEBUG0("Context put in the to_destroy set");
+ DEBUG0("Yielding");
+
+ #ifdef USE_PTHREADS
+ DEBUG0("**** Locking ****");
+ pthread_mutex_lock(&(context->mutex));
+ DEBUG0("**** Updating current_context ****");
+ current_context = context;
+ DEBUG0("**** Releasing the prisonner ****");
+ pthread_cond_signal(&(context->cond));
+ DEBUG0("**** Unlocking ****");
+ pthread_mutex_unlock(&(context->mutex));
+ DEBUG0("**** Exiting ****");
+ pthread_exit(0);
+ #elif defined(USE_WIN_THREADS)
+ DEBUG0("**** Locking ****");
+ win_thread_mutex_lock(&(context->mutex));
+ DEBUG0("**** Updating current_context ****");
+ current_context = context;
+ DEBUG0("**** Releasing the prisonner ****");
+ win_thread_cond_signal(&(context->cond));
+ DEBUG0("**** Unlocking ****");
+ win_thread_mutex_unlock(&(context->mutex));
+ DEBUG0("**** Exiting ****");
+ win_thread_exit(context->thread,0);
+ #else
+ __xbt_context_yield(context);
+ #endif
+ xbt_assert0(0,"You can't be here!");
}
-static void *__context_wrapper(void *c)
+#ifdef USE_WIN_THREADS
+static DWORD WINAPI /* special thread proc signature */
+#else
+static void *
+#endif
+__context_wrapper(void* c)
{
- xbt_context_t context = c;
-
-#ifdef USE_PTHREADS
- DEBUG2("**[%p:%p]** Lock ****",context,(void*)pthread_self());
- pthread_mutex_lock(&(context->mutex));
- DEBUG2("**[%p:%p]** Releasing the prisonner ****",context,(void*)pthread_self());
- pthread_cond_signal(&(context->cond));
- DEBUG2("**[%p:%p]** Going to Jail ****",context,(void*)pthread_self());
- pthread_cond_wait(&(context->cond), &(context->mutex));
- DEBUG2("**[%p:%p]** Unlocking ****",context,(void*)pthread_self());
- pthread_mutex_unlock(&(context->mutex));
-#endif
+ xbt_context_t context = (xbt_context_t)c;
+
+ #ifdef USE_PTHREADS
+ DEBUG2("**[%p:%p]** Lock ****",context,(void*)pthread_self());
+ pthread_mutex_lock(&(context->mutex));
+
+ DEBUG2("**[%p:%p]** Releasing the prisonner ****",context,(void*)pthread_self());
+ pthread_cond_signal(&(context->cond));
+
+ DEBUG2("**[%p:%p]** Going to Jail ****",context,(void*)pthread_self());
+ pthread_cond_wait(&(context->cond), &(context->mutex));
+
+ DEBUG2("**[%p:%p]** Unlocking ****",context,(void*)pthread_self());
+ pthread_mutex_unlock(&(context->mutex));
+
+ #elif defined(USE_WIN_THREADS)
+ DEBUG2("**[%p:%p]** Lock ****",context,(void*)win_thread_self());
+ win_thread_mutex_lock(&(context->mutex));
+
+ DEBUG2("**[%p:%p]** Releasing the prisonner ****",context,(void*)win_thread_self());
+ win_thread_cond_signal(&(context->cond));
- if(context->startup_func)
- context->startup_func(context->startup_arg);
+ DEBUG2("**[%p:%p]** Going to Jail ****",context,(void*)win_thread_self());
+ win_thread_cond_wait(&(context->cond), &(context->mutex));
- DEBUG0("Calling the main function");
+ DEBUG2("**[%p:%p]** Unlocking ****",context,(void*)win_thread_self());
+ win_thread_mutex_unlock(&(context->mutex));
- __context_exit(context, (context->code) (context->argc,context->argv));
- return NULL;
+ #endif
+
+ if(context->startup_func)
+ context->startup_func(context->startup_arg);
+
+ DEBUG0("Calling the main function");
+
+ __context_exit(context, (context->code) (context->argc,context->argv));
+ return NULL;
}
/* callback: context fetching */
static ex_ctx_t *__context_ex_ctx(void)
{
- return current_context->exception;
+ return current_context->exception;
}
/* callback: termination */
*/
void xbt_context_init(void)
{
- if(!current_context) {
- current_context = init_context = xbt_new0(s_xbt_context_t,1);
- init_context->exception = xbt_new(ex_ctx_t,1);
- XBT_CTX_INITIALIZE(init_context->exception);
- __xbt_ex_ctx = __context_ex_ctx;
- __xbt_ex_terminate = __context_ex_terminate;
- context_to_destroy = xbt_swag_new(xbt_swag_offset(*current_context,hookup));
- context_living = xbt_swag_new(xbt_swag_offset(*current_context,hookup));
- xbt_swag_insert(init_context, context_living);
- }
+ if(!current_context){
+ current_context = init_context = xbt_new0(s_xbt_context_t,1);
+
+ /*#ifdef USE_WIN_THREADS
+ win_thread_mutex_init(&(current_context->mutex));
+ win_thread_cond_init(&(current_context->cond));
+ #endif*/
+
+ init_context->exception = xbt_new(ex_ctx_t,1);
+ XBT_CTX_INITIALIZE(init_context->exception);
+ __xbt_ex_ctx = __context_ex_ctx;
+ __xbt_ex_terminate = __context_ex_terminate;
+ context_to_destroy = xbt_swag_new(xbt_swag_offset(*current_context,hookup));
+ context_living = xbt_swag_new(xbt_swag_offset(*current_context,hookup));
+ xbt_swag_insert(init_context, context_living);
+ }
}
/** Garbage collection
*/
void xbt_context_empty_trash(void)
{
- xbt_context_t context=NULL;
-
- while((context=xbt_swag_extract(context_to_destroy)))
- xbt_context_destroy(context);
+ xbt_context_t context=NULL;
+
+ while((context=xbt_swag_extract(context_to_destroy)))
+ xbt_context_destroy(context);
}
/**
*/
void xbt_context_start(xbt_context_t context)
{
-#ifdef USE_PTHREADS
- /* Launch the thread */
- DEBUG1("**[%p]** Locking ****",context);
- pthread_mutex_lock(&(context->mutex));
- DEBUG1("**[%p]** Pthread create ****",context);
- xbt_assert0(!pthread_create(context->thread, NULL, __context_wrapper, context),
- "Unable to create a thread.");
- DEBUG2("**[%p]** Pthread created : %p ****",context,(void*)(*(context->thread)));
- DEBUG1("**[%p]** Going to jail ****",context);
- pthread_cond_wait(&(context->cond), &(context->mutex));
- DEBUG1("**[%p]** Unlocking ****",context);
- pthread_mutex_unlock(&(context->mutex));
-#else
- makecontext (&(context->uc), (void (*) (void)) __context_wrapper,
- 1, context);
-#endif
- return;
+ #ifdef USE_PTHREADS
+ /* Launch the thread */
+ DEBUG1("**[%p]** Locking ****",context);
+ pthread_mutex_lock(&(context->mutex));
+ DEBUG1("**[%p]** Pthread create ****",context);
+ xbt_assert0(!pthread_create(context->thread, NULL, __context_wrapper, context),"Unable to create a thread.");
+ DEBUG2("**[%p]** Pthread created : %p ****",context,(void*)(*(context->thread)));
+ DEBUG1("**[%p]** Going to jail ****",context);
+ pthread_cond_wait(&(context->cond), &(context->mutex));
+ DEBUG1("**[%p]** Unlocking ****",context);
+ pthread_mutex_unlock(&(context->mutex));
+ #elif defined(USE_WIN_THREADS)
+ /* Launch the thread */
+ DEBUG1("**[%p]** Locking ****",context);
+ win_thread_mutex_lock(&(context->mutex));
+ DEBUG1("**[%p]** Windows thread create ****",context);
+ xbt_assert0(!win_thread_create(&(context->thread), __context_wrapper, context),"Unable to create a thread.");
+ DEBUG2("**[%p]** Windows created : %p ****",context,(void*)(context->thread));
+ DEBUG1("**[%p]** Going to jail ****",context);
+ win_thread_cond_wait(&(context->cond), &(context->mutex));
+ DEBUG1("**[%p]** Unlocking ****",context);
+ win_thread_mutex_unlock(&(context->mutex));
+ #else
+ makecontext (&(context->uc), (void (*) (void)) __context_wrapper,1, context);
+ #endif
+ return;
}
/**
void_f_pvoid_t cleanup_func, void *cleanup_arg,
int argc, char *argv[])
{
- xbt_context_t res = NULL;
-
- res = xbt_new0(s_xbt_context_t,1);
-
- res->code = code;
-#ifdef USE_PTHREADS
- res->thread = xbt_new0(pthread_t,1);
- xbt_assert0(!pthread_mutex_init(&(res->mutex), NULL), "Mutex initialization error");
- xbt_assert0(!pthread_cond_init(&(res->cond), NULL), "Condition initialization error");
-#else
- /* FIXME: strerror is not thread safe */
- xbt_assert2(getcontext(&(res->uc))==0,"Error in context saving: %d (%s)", errno, strerror(errno));
- res->uc.uc_link = NULL;
- /* res->uc.uc_link = &(current_context->uc); */
- /* WARNING : when this context is over, the current_context (i.e. the
- father), is awaken... Theorically, the wrapper should prevent using
- this feature. */
-# ifdef USE_WIN_CONTEXT
- res->uc.uc_stack.ss_sp = xbt_malloc(STACK_SIZE);
- res->uc.uc_stack.ss_size = STACK_SIZE ;
-#else
- res->uc.uc_stack.ss_sp = pth_skaddr_makecontext(res->stack,STACK_SIZE);
- res->uc.uc_stack.ss_size = pth_sksize_makecontext(res->stack,STACK_SIZE);
-# endif /* USE_WIN_CONTEXT */
-#endif /* USE_PTHREADS or not */
- res->argc = argc;
- res->argv = argv;
- res->startup_func = startup_func;
- res->startup_arg = startup_arg;
- res->cleanup_func = cleanup_func;
- res->cleanup_arg = cleanup_arg;
- res->exception = xbt_new(ex_ctx_t,1);
- XBT_CTX_INITIALIZE(res->exception);
-
- xbt_swag_insert(res, context_living);
-
- return res;
+ xbt_context_t res = NULL;
+
+ res = xbt_new0(s_xbt_context_t,1);
+
+ res->code = code;
+ #ifdef USE_PTHREADS
+ res->thread = xbt_new0(pthread_t,1);
+ xbt_assert0(!pthread_mutex_init(&(res->mutex), NULL), "Mutex initialization error");
+ xbt_assert0(!pthread_cond_init(&(res->cond), NULL), "Condition initialization error");
+ #elif defined(USE_WIN_THREADS)
+ /*res->thread = xbt_new0(pthread_t,1);*/
+ xbt_assert0(!win_thread_mutex_init(&(res->mutex)), "Mutex initialization error");
+ xbt_assert0(!win_thread_cond_init(&(res->cond)), "Condition initialization error");
+ #else
+ /* FIXME: strerror is not thread safe */
+ xbt_assert2(getcontext(&(res->uc))==0,"Error in context saving: %d (%s)", errno, strerror(errno));
+ res->uc.uc_link = NULL;
+ /* res->uc.uc_link = &(current_context->uc); */
+ /* WARNING : when this context is over, the current_context (i.e. the
+ father), is awaken... Theorically, the wrapper should prevent using
+ this feature. */
+ # ifdef USE_WIN_CONTEXT
+ res->uc.uc_stack.ss_sp = xbt_malloc(STACK_SIZE);
+ res->uc.uc_stack.ss_size = STACK_SIZE ;
+ #else
+ res->uc.uc_stack.ss_sp = pth_skaddr_makecontext(res->stack,STACK_SIZE);
+ res->uc.uc_stack.ss_size = pth_sksize_makecontext(res->stack,STACK_SIZE);
+ # endif /* USE_WIN_CONTEXT */
+ #endif /* USE_PTHREADS or not */
+
+ res->argc = argc;
+ res->argv = argv;
+ res->startup_func = startup_func;
+ res->startup_arg = startup_arg;
+ res->cleanup_func = cleanup_func;
+ res->cleanup_arg = cleanup_arg;
+ res->exception = xbt_new(ex_ctx_t,1);
+ XBT_CTX_INITIALIZE(res->exception);
+
+ xbt_swag_insert(res, context_living);
+
+ return res;
}
/**
*/
void xbt_context_yield(void)
{
- __xbt_context_yield(current_context);
+ __xbt_context_yield(current_context);
}
/**
*/
void xbt_context_schedule(xbt_context_t context)
{
- DEBUG1("Scheduling %p",context);
- xbt_assert0((current_context==init_context),
- "You are not supposed to run this function here!");
- __xbt_context_yield(context);
+ DEBUG1("Scheduling %p",context);
+ xbt_assert0((current_context==init_context),"You are not supposed to run this function here!");
+ __xbt_context_yield(context);
}
/**
* that has been allocated in this module.
*/
void xbt_context_exit(void) {
- xbt_context_t context=NULL;
-
- xbt_context_empty_trash();
- xbt_swag_free(context_to_destroy);
+ xbt_context_t context=NULL;
- while((context=xbt_swag_extract(context_living)))
- xbt_context_free(context);
+ /*#ifdef USE_WIN_THREADS
+ win_thread_mutex_destroy(&(current_context->mutex));
+ win_thread_cond_destroy(&(current_context->cond));
+ #endif*/
- xbt_swag_free(context_living);
-
- init_context = current_context = NULL ;
+ xbt_context_empty_trash();
+ xbt_swag_free(context_to_destroy);
+
+ while((context=xbt_swag_extract(context_living)))
+ xbt_context_free(context);
+
+ xbt_swag_free(context_living);
+
+ init_context = current_context = NULL ;
}
/**
*/
void xbt_context_free(xbt_context_t context)
{
- int i ;
-
- xbt_swag_remove(context, context_living);
- for(i=0;i<context->argc; i++)
- if(context->argv[i]) free(context->argv[i]);
- if(context->argv) free(context->argv);
-
- if(context->cleanup_func)
- context->cleanup_func(context->cleanup_arg);
- xbt_context_destroy(context);
-
- return;
+ int i ;
+
+ xbt_swag_remove(context, context_living);
+
+ for(i=0;i<context->argc; i++)
+ if(context->argv[i])
+ free(context->argv[i]);
+
+ if(context->argv)
+ free(context->argv);
+
+ if(context->cleanup_func)
+ context->cleanup_func(context->cleanup_arg);
+
+ xbt_context_destroy(context);
+
+ return;
}
/* @} */
