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-rw-r--r--pthreads/src/pthread_mutex_trylock.c154
1 files changed, 0 insertions, 154 deletions
diff --git a/pthreads/src/pthread_mutex_trylock.c b/pthreads/src/pthread_mutex_trylock.c
deleted file mode 100644
index d6b6872..0000000
--- a/pthreads/src/pthread_mutex_trylock.c
+++ /dev/null
@@ -1,154 +0,0 @@
-/*
- * pthread_mutex_trylock.c
- *
- * Description:
- * This translation unit implements mutual exclusion (mutex) primitives.
- *
- * --------------------------------------------------------------------------
- *
- * Pthreads-win32 - POSIX Threads Library for Win32
- * Copyright(C) 1998 John E. Bossom
- * Copyright(C) 1999,2005 Pthreads-win32 contributors
- *
- * Contact Email: rpj@callisto.canberra.edu.au
- *
- * The current list of contributors is contained
- * in the file CONTRIBUTORS included with the source
- * code distribution. The list can also be seen at the
- * following World Wide Web location:
- * http://sources.redhat.com/pthreads-win32/contributors.html
- *
- * This library is free software; you can redistribute it and/or
- * modify it under the terms of the GNU Lesser General Public
- * License as published by the Free Software Foundation; either
- * version 2 of the License, or (at your option) any later version.
- *
- * This 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
- * Lesser General Public License for more details.
- *
- * You should have received a copy of the GNU Lesser General Public
- * License along with this library in 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 "implement.h"
-
-
-int
-pthread_mutex_trylock (pthread_mutex_t * mutex)
-{
- pthread_mutex_t mx;
- int kind;
- int result = 0;
-
- /*
- * Let the system deal with invalid pointers.
- */
-
- /*
- * We do a quick check to see if we need to do more work
- * to initialise a static mutex. We check
- * again inside the guarded section of ptw32_mutex_check_need_init()
- * to avoid race conditions.
- */
- if (*mutex >= PTHREAD_ERRORCHECK_MUTEX_INITIALIZER)
- {
- if ((result = ptw32_mutex_check_need_init (mutex)) != 0)
- {
- return (result);
- }
- }
-
- mx = *mutex;
- kind = mx->kind;
-
- if (kind >= 0)
- {
- /* Non-robust */
- if (0 == (PTW32_INTERLOCKED_LONG) PTW32_INTERLOCKED_COMPARE_EXCHANGE_LONG (
- (PTW32_INTERLOCKED_LONGPTR) &mx->lock_idx,
- (PTW32_INTERLOCKED_LONG) 1,
- (PTW32_INTERLOCKED_LONG) 0))
- {
- if (kind != PTHREAD_MUTEX_NORMAL)
- {
- mx->recursive_count = 1;
- mx->ownerThread = pthread_self ();
- }
- }
- else
- {
- if (kind == PTHREAD_MUTEX_RECURSIVE &&
- pthread_equal (mx->ownerThread, pthread_self ()))
- {
- mx->recursive_count++;
- }
- else
- {
- result = EBUSY;
- }
- }
- }
- else
- {
- /*
- * Robust types
- * All types record the current owner thread.
- * The mutex is added to a per thread list when ownership is acquired.
- */
- pthread_t self;
- ptw32_robust_state_t* statePtr = &mx->robustNode->stateInconsistent;
-
- if ((PTW32_INTERLOCKED_LONG)PTW32_ROBUST_NOTRECOVERABLE ==
- PTW32_INTERLOCKED_EXCHANGE_ADD_LONG(
- (PTW32_INTERLOCKED_LONGPTR)statePtr,
- (PTW32_INTERLOCKED_LONG)0))
- {
- return ENOTRECOVERABLE;
- }
-
- self = pthread_self();
- kind = -kind - 1; /* Convert to non-robust range */
-
- if (0 == (PTW32_INTERLOCKED_LONG) PTW32_INTERLOCKED_COMPARE_EXCHANGE_LONG (
- (PTW32_INTERLOCKED_LONGPTR) &mx->lock_idx,
- (PTW32_INTERLOCKED_LONG) 1,
- (PTW32_INTERLOCKED_LONG) 0))
- {
- if (kind != PTHREAD_MUTEX_NORMAL)
- {
- mx->recursive_count = 1;
- }
- ptw32_robust_mutex_add(mutex, self);
- }
- else
- {
- if (PTHREAD_MUTEX_RECURSIVE == kind &&
- pthread_equal (mx->ownerThread, pthread_self ()))
- {
- mx->recursive_count++;
- }
- else
- {
- if (EOWNERDEAD == (result = ptw32_robust_mutex_inherit(mutex)))
- {
- mx->recursive_count = 1;
- ptw32_robust_mutex_add(mutex, self);
- }
- else
- {
- if (0 == result)
- {
- result = EBUSY;
- }
- }
- }
- }
- }
-
- return (result);
-}