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Integrated Chris Ball's <cball@fmco.com> changes to improve the Posix

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thread support for Objective-C.

From-SVN: r35533
This commit is contained in:
Ovidiu Predescu 2000-08-06 18:54:00 +00:00
parent 137fa4d0bd
commit 447c11a54e
1 changed files with 60 additions and 9 deletions
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69
gcc/gthr-posix.h
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@ -92,6 +92,7 @@ __gthread_active_p (void)
/* Key structure for maintaining thread specific storage */
static pthread_key_t _objc_thread_storage;
static pthread_attr_t _objc_thread_attribs;
/* Thread local storage for a single thread */
static void *thread_local_storage = NULL;
@ -103,8 +104,19 @@ static inline int
__gthread_objc_init_thread_system(void)
{
if (__gthread_active_p ())
/* Initialize the thread storage key */
return pthread_key_create(&_objc_thread_storage, NULL);
{
/* Initialize the thread storage key */
if (pthread_key_create(&_objc_thread_storage, NULL) == 0)
{
/* The normal default detach state for threads is
* PTHREAD_CREATE_JOINABLE which causes threads to not die
* when you think they should. */
if (pthread_attr_init(&_objc_thread_attribs) == 0
&& pthread_attr_setdetachstate(&_objc_thread_attribs,
PTHREAD_CREATE_DETACHED) == 0)
return 0;
}
}
else
return -1;
}
@ -113,10 +125,12 @@ __gthread_objc_init_thread_system(void)
static inline int
__gthread_objc_close_thread_system(void)
{
if (__gthread_active_p ())
if (__gthread_active_p ()
&& pthread_key_delete(_objc_thread_storage) == 0
&& pthread_attr_destroy(&_objc_thread_attribs) == 0)
return 0;
else
return -1;
return -1;
}
/* Backend thread functions */
@ -143,8 +157,38 @@ __gthread_objc_thread_detach(void (*func)(void *), void *arg)
static inline int
__gthread_objc_thread_set_priority(int priority)
{
/* Not implemented yet */
return -1;
if (!__gthread_active_p())
return -1;
else {
pthread_t thread_id = pthread_self();
int policy;
struct sched_param params;
int priority_min, priority_max;
if (pthread_getschedparam(thread_id, &policy, &params) == 0)
{
if ((priority_max = sched_get_priority_max(policy)) != 0)
return -1;
if ((priority_min = sched_get_priority_min(policy)) != 0)
return -1;
if (priority > priority_max)
priority = priority_max;
else if (priority < priority_min)
priority = priority_min;
params.sched_priority = priority;
/*
* The solaris 7 and several other man pages incorrectly state that
* this should be a pointer to policy but pthread.h is universally
* at odds with this.
*/
if (pthread_setschedparam(thread_id, policy, &params) == 0)
return 0;
}
return -1;
}
}
/* Return the current thread's priority. */
@ -152,8 +196,15 @@ static inline int
__gthread_objc_thread_get_priority(void)
{
if (__gthread_active_p ())
/* Not implemented yet */
return -1;
{
int policy;
struct sched_param params;
if (pthread_getschedparam(pthread_self(), &policy, &params) == 0)
return params.sched_priority;
else
return -1;
}
else
return OBJC_THREAD_INTERACTIVE_PRIORITY;
}