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authorKurt Miller <kurt@cvs.openbsd.org>2007-07-23 17:24:07 +0000
committerKurt Miller <kurt@cvs.openbsd.org>2007-07-23 17:24:07 +0000
commitf8218084082684574f82838e98038055f42d4b78 (patch)
treefa1d6d5262fd3b9240e5dc2ac50dbbba6350b1ee /gnu/lib/libobjc
parent21e8dadb59ba3142105c333defcd4ad560211262 (diff)
- enable thread support in libobjc
- disable thread priorities in libobjc to avoid thread starvation issues - major bump lib due to new link dependency on pthread - link objc regress with -pthread Tested on i386/amd64/powerpc/landisk/vax/sparc64/hppa. okay espie@
Diffstat (limited to 'gnu/lib/libobjc')
-rw-r--r--gnu/lib/libobjc/Makefile.bsd-wrapper5
-rw-r--r--gnu/lib/libobjc/libobjc/thr-posix.c133
-rw-r--r--gnu/lib/libobjc/shlib_version2
3 files changed, 117 insertions, 23 deletions
diff --git a/gnu/lib/libobjc/Makefile.bsd-wrapper b/gnu/lib/libobjc/Makefile.bsd-wrapper
index b411c665c73..ca0a4569357 100644
--- a/gnu/lib/libobjc/Makefile.bsd-wrapper
+++ b/gnu/lib/libobjc/Makefile.bsd-wrapper
@@ -1,4 +1,4 @@
-# $OpenBSD: Makefile.bsd-wrapper,v 1.4 2006/08/28 20:49:50 tsi Exp $
+# $OpenBSD: Makefile.bsd-wrapper,v 1.5 2007/07/23 17:24:06 kurt Exp $
LIB= objc
@@ -44,8 +44,7 @@ SRCS=archive.c class.c encoding.c gc.c hash.c init.c linking.m misc.c \
nil_method.c NXConstStr.m Object.m objects.c Protocol.m sarray.c \
selector.c sendmsg.c thr.c
-# XXX need to check how threads work.
-SRCS+=thr-single.c
+SRCS+=thr-posix.c
includes:
install -d -m 755 -o $(BINOWN) -g $(BINGRP) \
diff --git a/gnu/lib/libobjc/libobjc/thr-posix.c b/gnu/lib/libobjc/libobjc/thr-posix.c
index 5b40f711be8..ed40be2459e 100644
--- a/gnu/lib/libobjc/libobjc/thr-posix.c
+++ b/gnu/lib/libobjc/libobjc/thr-posix.c
@@ -2,6 +2,7 @@
Copyright (C) 1996, 1997 Free Software Foundation, Inc.
Contributed by Galen C. Hunt (gchunt@cs.rochester.edu)
Modified for Linux/Pthreads by Kai-Uwe Sattler (kus@iti.cs.uni-magdeburg.de)
+ Modified for posix compliance by Chris Ball (cball@fmco.com)
This file is part of GNU CC.
@@ -31,6 +32,7 @@ Boston, MA 02111-1307, USA. */
/* Key structure for maintaining thread specific storage */
static pthread_key_t _objc_thread_storage;
+static pthread_attr_t _objc_thread_attribs;
/* Backend initialization functions */
@@ -39,14 +41,34 @@ int
__objc_init_thread_system(void)
{
/* Initialize the thread storage key */
- return pthread_key_create(&_objc_thread_storage, NULL);
+ 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)
+ {
+ if (pthread_attr_setdetachstate(&_objc_thread_attribs,
+ PTHREAD_CREATE_DETACHED) == 0)
+ return 0;
+ }
+ }
+
+ return -1;
}
/* Close the threads subsystem. */
int
__objc_close_thread_system(void)
{
- return 0;
+ if (pthread_key_delete(_objc_thread_storage) == 0)
+ {
+ if (pthread_attr_destroy(&_objc_thread_attribs) == 0)
+ return 0;
+ }
+
+ return -1;
}
/* Backend thread functions */
@@ -57,20 +79,52 @@ __objc_thread_detach(void (*func)(void *arg), void *arg)
{
objc_thread_t thread_id;
pthread_t new_thread_handle;
-
- if ( !(pthread_create(&new_thread_handle, NULL, (void *)func, arg)) )
- thread_id = *(objc_thread_t *)&new_thread_handle;
+
+ if (!(pthread_create(&new_thread_handle, &_objc_thread_attribs,
+ (void *)func, arg)))
+ thread_id = *(objc_thread_t *)&new_thread_handle;
else
thread_id = NULL;
return thread_id;
}
-/* Set the current thread's priority. */
+/* Set the current thread's priority.
+ *
+ * Be aware that the default schedpolicy often disallows thread priorities.
+ */
int
__objc_thread_set_priority(int priority)
{
- /* Not implemented yet */
+#ifndef __OpenBSD__
+ 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;
+ }
+#endif
return -1;
}
@@ -78,8 +132,17 @@ __objc_thread_set_priority(int priority)
int
__objc_thread_get_priority(void)
{
- /* Not implemented yet */
- return -1;
+#ifdef __OpenBSD__
+ return OBJC_THREAD_INTERACTIVE_PRIORITY;
+#else
+ int policy;
+ struct sched_param params;
+
+ if (pthread_getschedparam(pthread_self(), &policy, &params) == 0)
+ return params.sched_priority;
+ else
+ return -1;
+#endif
}
/* Yield our process time to another thread. */
@@ -113,7 +176,10 @@ __objc_thread_id(void)
int
__objc_thread_set_data(void *value)
{
- return pthread_setspecific(_objc_thread_storage, value);
+ if (pthread_setspecific(_objc_thread_storage, value) == 0)
+ return 0;
+ else
+ return -1;
}
/* Returns the thread's local storage pointer. */
@@ -145,6 +211,19 @@ __objc_mutex_allocate(objc_mutex_t mutex)
int
__objc_mutex_deallocate(objc_mutex_t mutex)
{
+ int count = 1;
+
+ /*
+ * Posix Threads specifically require that the thread be unlocked for
+ * pthread_mutex_destroy to work.
+ */
+
+ while (count)
+ {
+ if ((count = pthread_mutex_unlock((pthread_mutex_t*)mutex->backend)) < 0)
+ return -1;
+ }
+
if (pthread_mutex_destroy((pthread_mutex_t *)mutex->backend))
return -1;
@@ -157,21 +236,30 @@ __objc_mutex_deallocate(objc_mutex_t mutex)
int
__objc_mutex_lock(objc_mutex_t mutex)
{
- return pthread_mutex_lock((pthread_mutex_t *)mutex->backend);
+ if (pthread_mutex_lock((pthread_mutex_t *)mutex->backend) == 0)
+ return 0;
+ else
+ return -1;
}
/* Try to grab a lock on a mutex. */
int
__objc_mutex_trylock(objc_mutex_t mutex)
{
- return pthread_mutex_trylock((pthread_mutex_t *)mutex->backend);
+ if (pthread_mutex_trylock((pthread_mutex_t *)mutex->backend) == 0)
+ return 0;
+ else
+ return -1;
}
/* Unlock the mutex */
int
__objc_mutex_unlock(objc_mutex_t mutex)
{
- return pthread_mutex_unlock((pthread_mutex_t *)mutex->backend);
+ if (pthread_mutex_unlock((pthread_mutex_t *)mutex->backend) == 0)
+ return 0;
+ else
+ return -1;
}
/* Backend condition mutex functions */
@@ -208,22 +296,29 @@ __objc_condition_deallocate(objc_condition_t condition)
int
__objc_condition_wait(objc_condition_t condition, objc_mutex_t mutex)
{
- return pthread_cond_wait((pthread_cond_t *)condition->backend,
- (pthread_mutex_t *)mutex->backend);
+ if (pthread_cond_wait((pthread_cond_t *)condition->backend,
+ (pthread_mutex_t *)mutex->backend) == 0)
+ return 0;
+ else
+ return -1;
}
/* Wake up all threads waiting on this condition. */
int
__objc_condition_broadcast(objc_condition_t condition)
{
- return pthread_cond_broadcast((pthread_cond_t *)condition->backend);
+ if (pthread_cond_broadcast((pthread_cond_t *)condition->backend) == 0)
+ return 0;
+ else
+ return -1;
}
/* Wake up one thread waiting on this condition. */
int
__objc_condition_signal(objc_condition_t condition)
{
- return pthread_cond_signal((pthread_cond_t *)condition->backend);
+ if (pthread_cond_signal((pthread_cond_t *)condition->backend) == 0)
+ return 0;
+ else
+ return -1;
}
-
-/* End of File */
diff --git a/gnu/lib/libobjc/shlib_version b/gnu/lib/libobjc/shlib_version
index 012c14171d3..d9961ea9fef 100644
--- a/gnu/lib/libobjc/shlib_version
+++ b/gnu/lib/libobjc/shlib_version
@@ -1,2 +1,2 @@
-major=3
+major=4
minor=0