diogo/yap-6.3
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support case where engines have no associated pthread

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This commit is contained in:
Vítor Santos Costa 2010-07-25 11:21:15 +01:00
parent 7dd2714263
commit 5b6014175e
1 changed files with 13 additions and 14 deletions
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27
C/threads.c
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@ -63,7 +63,7 @@ allocate_new_tid(void)
} else {
new_worker_id = -1;
}
UNLOCK(ThreadHandlesLock);
UNLOCK(ThreadHandlesLock);
return new_worker_id;
}
@ -161,7 +161,6 @@ setup_engine(int myworker_id)
standard_regs = (REGSTORE *)calloc(1,sizeof(REGSTORE));
/* create the YAAM descriptor */
FOREIGN_ThreadHandle(myworker_id).default_yaam_regs = standard_regs;
pthread_setspecific(Yap_yaamregs_key, (void *)standard_regs);
worker_id = myworker_id;
Yap_InitExStacks(FOREIGN_ThreadHandle(myworker_id).tsize, FOREIGN_ThreadHandle(myworker_id).ssize);
CurrentModule = FOREIGN_ThreadHandle(myworker_id).cmod;
@ -180,7 +179,7 @@ setup_engine(int myworker_id)
static void
start_thread(int myworker_id)
{
setup_engine(myworker_id);
pthread_setspecific(Yap_yaamregs_key, (void *)FOREIGN_ThreadHandle(myworker_id).default_yaam_regs);
worker_id = myworker_id;
}
@ -264,7 +263,7 @@ p_create_thread(void)
/* make sure we can proceed */
if (!init_thread_engine(new_worker_id, ssize, tsize, sysize, &ARG1, &ARG5, &ARG6))
return FALSE;
FOREIGN_ThreadHandle(new_worker_id).pthread_handle = NULL;
FOREIGN_ThreadHandle(new_worker_id).pthread_handle = 0L;
FOREIGN_ThreadHandle(new_worker_id).id = new_worker_id;
FOREIGN_ThreadHandle(new_worker_id).ref_count = 1;
if ((FOREIGN_ThreadHandle(new_worker_id).ret = pthread_create(&FOREIGN_ThreadHandle(new_worker_id).pthread_handle, NULL, thread_run, (void *)(&(FOREIGN_ThreadHandle(new_worker_id).id)))) == 0) {
@ -388,17 +387,18 @@ Yap_thread_create_engine(thread_attr *ops)
ops->egoal = t;
}
if (pthread_self() != Yap_master_thread) {
pthread_setspecific(Yap_yaamregs_key, (const void *)&Yap_standard_regs);
/* we are worker_id 0 for now, lock master thread so that no one messes with us */
pthread_setspecific(Yap_yaamregs_key, (const void *)&Yap_standard_regs);
pthread_mutex_lock(&(FOREIGN_ThreadHandle(0).tlock));
}
if (!init_thread_engine(new_id, ops->ssize, ops->tsize, ops->sysize, &t, &t, &(ops->egoal)))
return -1;
FOREIGN_ThreadHandle(new_id).pthread_handle = NULL;
FOREIGN_ThreadHandle(new_id).pthread_handle = 0L;
FOREIGN_ThreadHandle(new_id).id = new_id;
FOREIGN_ThreadHandle(new_id).ref_count = 0;
setup_engine(new_id);
if (pthread_self() != Yap_master_thread) {
pthread_setspecific(Yap_yaamregs_key, NULL);
pthread_mutex_unlock(&(FOREIGN_ThreadHandle(0).tlock));
}
return new_id;
@ -407,8 +407,10 @@ Yap_thread_create_engine(thread_attr *ops)
Int
Yap_thread_attach_engine(int wid)
{
DEBUG_TLOCK_ACCESS(7, wid);
pthread_mutex_lock(&(FOREIGN_ThreadHandle(wid).tlock));
/*
already locked
pthread_mutex_lock(&(FOREIGN_ThreadHandle(wid).tlock));
*/
if (FOREIGN_ThreadHandle(wid).ref_count ) {
DEBUG_TLOCK_ACCESS(8, wid);
FOREIGN_ThreadHandle(wid).ref_count++;
@ -418,6 +420,7 @@ Yap_thread_attach_engine(int wid)
}
FOREIGN_ThreadHandle(wid).pthread_handle = pthread_self();
FOREIGN_ThreadHandle(wid).ref_count++;
pthread_setspecific(Yap_yaamregs_key, (const void *)FOREIGN_ThreadHandle(wid).default_yaam_regs);
worker_id = wid;
DEBUG_TLOCK_ACCESS(9, wid);
pthread_mutex_unlock(&(FOREIGN_ThreadHandle(wid).tlock));
@ -429,13 +432,9 @@ Yap_thread_detach_engine(int wid)
{
DEBUG_TLOCK_ACCESS(10, wid);
pthread_mutex_lock(&(FOREIGN_ThreadHandle(wid).tlock));
if (FOREIGN_ThreadHandle(wid).ref_count == 0) {
FOREIGN_ThreadHandle(wid).pthread_handle = NULL;
DEBUG_TLOCK_ACCESS(11, wid);
pthread_mutex_unlock(&(FOREIGN_ThreadHandle(wid).tlock));
return FALSE;
}
FOREIGN_ThreadHandle(wid).pthread_handle = 0;
FOREIGN_ThreadHandle(wid).ref_count--;
pthread_setspecific(Yap_yaamregs_key, NULL);
DEBUG_TLOCK_ACCESS(11, wid);
pthread_mutex_unlock(&(FOREIGN_ThreadHandle(wid).tlock));
return TRUE;