3387a425e6
1998-06-25 19:27 Ulrich Drepper <drepper@cygnus.com> * attr.c: Finish user stack support. Change locking code to be safe in situations with different priorities. * cancel.c: Likewise. * condvar.c: Likewise. * internals.h: Likewise. * join.c: Likewise. * manager.c: Likewise. * mutex.c: Likewise. * pthread.c: Likewise. * ptlongjmp.c: Likewise. * queue.h: Likewise. * rwlock.c: Likewise. * semaphore.c: Likewise. * semaphore.h: Likewise. * signals.c: Likewise. * spinlock.c: Likewise. * spinlock.h: Likewise. Patches by Xavier leroy. 1998-06-25 Ulrich Drepper <drepper@cygnus.com> * sysdeps/pthread/pthread.h: Make [sg]et_stacksize and [sg]et_stackaddr prototypes always available. * sysdeps/unix/sysv/linux/bits/posix_opt.h: Define _POSIX_THREAD_ATTR_STACKSIZE and _POSIX_THREAD_ATTR_STACKADDR.
64 lines
2.3 KiB
C
64 lines
2.3 KiB
C
/* Linuxthreads - a simple clone()-based implementation of Posix */
|
|
/* threads for Linux. */
|
|
/* Copyright (C) 1998 Xavier Leroy (Xavier.Leroy@inria.fr) */
|
|
/* */
|
|
/* This program is free software; you can redistribute it and/or */
|
|
/* modify it under the terms of the GNU Library General Public License */
|
|
/* as published by the Free Software Foundation; either version 2 */
|
|
/* of the License, or (at your option) any later version. */
|
|
/* */
|
|
/* This program is distributed in the hope that it will be useful, */
|
|
/* but WITHOUT ANY WARRANTY; without even the implied warranty of */
|
|
/* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the */
|
|
/* GNU Library General Public License for more details. */
|
|
|
|
/* Internal locks */
|
|
|
|
extern void __pthread_lock(struct _pthread_fastlock * lock);
|
|
extern int __pthread_trylock(struct _pthread_fastlock * lock);
|
|
extern void __pthread_unlock(struct _pthread_fastlock * lock);
|
|
|
|
static inline void __pthread_init_lock(struct _pthread_fastlock * lock)
|
|
{
|
|
lock->status = 0;
|
|
lock->spinlock = 0;
|
|
}
|
|
|
|
#define LOCK_INITIALIZER {0, 0}
|
|
|
|
#if defined(TEST_FOR_COMPARE_AND_SWAP)
|
|
|
|
extern int __pthread_has_cas;
|
|
extern int __pthread_compare_and_swap(long * ptr, long oldval, long newval,
|
|
int * spinlock);
|
|
|
|
static inline int compare_and_swap(long * ptr, long oldval, long newval,
|
|
int * spinlock)
|
|
{
|
|
if (__pthread_has_cas)
|
|
return __compare_and_swap(ptr, oldval, newval);
|
|
else
|
|
return __pthread_compare_and_swap(ptr, oldval, newval, spinlock);
|
|
}
|
|
|
|
#elif defined(HAS_COMPARE_AND_SWAP)
|
|
|
|
static inline int compare_and_swap(long * ptr, long oldval, long newval,
|
|
int * spinlock)
|
|
{
|
|
return __compare_and_swap(ptr, oldval, newval);
|
|
}
|
|
|
|
#else
|
|
|
|
extern int __pthread_compare_and_swap(long * ptr, long oldval, long newval,
|
|
int * spinlock);
|
|
|
|
static inline int compare_and_swap(long * ptr, long oldval, long newval,
|
|
int * spinlock)
|
|
{
|
|
return __pthread_compare_and_swap(ptr, oldval, newval, spinlock);
|
|
}
|
|
|
|
#endif
|