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Diffstat (limited to 'libpthread/sysdeps/generic/pt-mutex-trylock.c')
-rw-r--r--libpthread/sysdeps/generic/pt-mutex-trylock.c112
1 files changed, 0 insertions, 112 deletions
diff --git a/libpthread/sysdeps/generic/pt-mutex-trylock.c b/libpthread/sysdeps/generic/pt-mutex-trylock.c
deleted file mode 100644
index 7a54cc9a..00000000
--- a/libpthread/sysdeps/generic/pt-mutex-trylock.c
+++ /dev/null
@@ -1,112 +0,0 @@
-/* Try to Lock a mutex. Generic version.
- Copyright (C) 2002, 2005, 2008 Free Software Foundation, Inc.
- This file is part of the GNU C Library.
-
- The GNU C Library 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.
-
- The GNU C Library 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.
-
- You should have received a copy of the GNU Library General Public
- License along with the GNU C Library; see the file COPYING.LIB. If not,
- write to the Free Software Foundation, Inc., 59 Temple Place - Suite 330,
- Boston, MA 02111-1307, USA. */
-
-#include <pthread.h>
-
-#include <pt-internal.h>
-
-#define LOSE do { * (int *) 0 = 0; } while (1)
-
-/* Lock MUTEX, return EBUSY if we can't get it. */
-int
-__pthread_mutex_trylock (struct __pthread_mutex *mutex)
-{
- int err;
- struct __pthread *self;
- const struct __pthread_mutexattr *attr = mutex->attr;
-
- if (attr == __PTHREAD_ERRORCHECK_MUTEXATTR)
- attr = &__pthread_errorcheck_mutexattr;
- if (attr == __PTHREAD_RECURSIVE_MUTEXATTR)
- attr = &__pthread_recursive_mutexattr;
-
- __pthread_spin_lock (&mutex->__lock);
- if (__pthread_spin_trylock (&mutex->__held) == 0)
- /* Acquired the lock. */
- {
-#if defined(ALWAYS_TRACK_MUTEX_OWNER)
-#ifndef NDEBUG
- self = _pthread_self ();
- if (self)
- /* The main thread may take a lock before the library is fully
- initialized, in particular, before the main thread has a
- TCB. */
- {
- assert (! mutex->owner);
- mutex->owner = _pthread_self ();
- }
-#endif
-#endif
-
- if (attr)
- switch (attr->mutex_type)
- {
- case PTHREAD_MUTEX_NORMAL:
- break;
-
- case PTHREAD_MUTEX_RECURSIVE:
- mutex->locks = 1;
- case PTHREAD_MUTEX_ERRORCHECK:
- mutex->owner = _pthread_self ();
- break;
-
- default:
- LOSE;
- }
-
- __pthread_spin_unlock (&mutex->__lock);
- return 0;
- }
-
- err = EBUSY;
-
- if (attr)
- {
- self = _pthread_self ();
- switch (attr->mutex_type)
- {
- case PTHREAD_MUTEX_NORMAL:
- break;
-
- case PTHREAD_MUTEX_ERRORCHECK:
- /* We could check if MUTEX->OWNER is SELF, however, POSIX
- does not permit pthread_mutex_trylock to return EDEADLK
- instead of EBUSY, only pthread_mutex_lock. */
- break;
-
- case PTHREAD_MUTEX_RECURSIVE:
- if (mutex->owner == self)
- {
- mutex->locks ++;
- err = 0;
- }
- break;
-
- default:
- LOSE;
- }
- }
-
- __pthread_spin_unlock (&mutex->__lock);
-
- return err;
-}
-
-strong_alias (__pthread_mutex_trylock, _pthread_mutex_trylock);
-strong_alias (__pthread_mutex_trylock, pthread_mutex_trylock);