From 682f23e7bb4a52bedf46eff5c4859e1308eda124 Mon Sep 17 00:00:00 2001 From: Michał Cichoń Date: Tue, 25 Aug 2015 19:56:24 +0200 Subject: Update build ref --- pthreads/src/pthread_mutex_trylock.c | 154 ----------------------------------- 1 file changed, 154 deletions(-) delete mode 100644 pthreads/src/pthread_mutex_trylock.c (limited to 'pthreads/src/pthread_mutex_trylock.c') 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); -} -- cgit v1.2.3