From e5106342c6de9cbe26c4827e4e29bae309cd8cfb Mon Sep 17 00:00:00 2001 From: Daniel Eischen Date: Wed, 24 Jan 2001 13:03:38 +0000 Subject: Add weak definitions for wrapped system calls. In general: _foo - wrapped system call foo - weak definition to _foo and for cancellation points: _foo - wrapped system call __foo - enter cancellation point, call _foo(), leave cancellation point foo - weak definition to __foo Change use of global _thread_run to call a function to get the currently running thread. Make all pthread_foo functions weak definitions to _pthread_foo, where _pthread_foo is the implementation. This allows an application to provide its own pthread functions. Provide slightly different versions of pthread_mutex_lock and pthread_mutex_init so that we can tell the difference between a libc mutex and an application mutex. Threads holding mutexes internal to libc should never be allowed to exit, call signal handlers, or cancel. Approved by: -arch --- lib/libpthread/thread/thr_clean.c | 19 +++++++++++-------- 1 file changed, 11 insertions(+), 8 deletions(-) (limited to 'lib/libpthread/thread/thr_clean.c') diff --git a/lib/libpthread/thread/thr_clean.c b/lib/libpthread/thread/thr_clean.c index bba5500c8fe7..9ce3fc2b2b25 100644 --- a/lib/libpthread/thread/thr_clean.c +++ b/lib/libpthread/thread/thr_clean.c @@ -34,31 +34,35 @@ #include #include #include -#ifdef _THREAD_SAFE #include #include "pthread_private.h" +#pragma weak pthread_cleanup_push=_pthread_cleanup_push +#pragma weak pthread_cleanup_pop=_pthread_cleanup_pop + void -pthread_cleanup_push(void (*routine) (void *), void *routine_arg) +_pthread_cleanup_push(void (*routine) (void *), void *routine_arg) { + struct pthread *curthread = _get_curthread(); struct pthread_cleanup *new; if ((new = (struct pthread_cleanup *) malloc(sizeof(struct pthread_cleanup))) != NULL) { new->routine = routine; new->routine_arg = routine_arg; - new->next = _thread_run->cleanup; + new->next = curthread->cleanup; - _thread_run->cleanup = new; + curthread->cleanup = new; } } void -pthread_cleanup_pop(int execute) +_pthread_cleanup_pop(int execute) { + struct pthread *curthread = _get_curthread(); struct pthread_cleanup *old; - if ((old = _thread_run->cleanup) != NULL) { - _thread_run->cleanup = old->next; + if ((old = curthread->cleanup) != NULL) { + curthread->cleanup = old->next; if (execute) { old->routine(old->routine_arg); } @@ -66,4 +70,3 @@ pthread_cleanup_pop(int execute) } } -#endif -- cgit v1.2.3