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77 lines
3 KiB
C
77 lines
3 KiB
C
/* -*-mode: C; fill-column: 78; c-basic-offset: 4; -*- */
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/*
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* Copyright 2024 by Eric House (xwords@eehouse.org). All rights reserved.
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*
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* This program is free software; you can redistribute it and/or
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* modify it under the terms of the GNU General Public License
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* as published by the Free Software Foundation; either version 2
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* of the License, or (at your option) any later version.
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*
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* This program is distributed in the hope that it will be useful,
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* but WITHOUT ANY WARRANTY; without even the implied warranty of
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* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
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* GNU General Public License for more details.
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*
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* You should have received a copy of the GNU General Public License
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* along with this program; if not, write to the Free Software
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* Foundation, Inc., 59 Temple Place - Suite 330, Boston, MA 02111-1307, USA.
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*/
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#ifndef _XWMUTEX_H_
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#define _XWMUTEX_H_
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#include <pthread.h>
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#include "xptypes.h"
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/* Making this a struct in case I want to add e.g. a chain of holders */
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typedef struct _MutexState {
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pthread_mutex_t mutex;
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} MutexState;
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#if 0
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# define MUTEX_LOG(...) XP_LOGFF(__VA_ARGS__)
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#else
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# define MUTEX_LOG(...)
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#endif
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#define WITH_MUTEX_LOCK_DEBUG(STATEP) { \
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MutexState* _state = (STATEP); \
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time_t startTime = time(NULL); \
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MUTEX_LOG( "blocking for mutex %p", _state ); \
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pthread_mutex_lock(&_state->mutex); \
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MUTEX_LOG( "got mutex %p", _state ); \
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time_t gotItTime = time(NULL); \
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time_t _elapsed = gotItTime-startTime; \
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if ( 0 < _elapsed ) { \
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XP_LOGFF("took %lds to get mutex", _elapsed); \
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} \
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#define WITH_MUTEX_UNLOCK_DEBUG() \
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time_t unlockTime = time(NULL); \
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_elapsed = unlockTime-gotItTime; \
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if ( 0 < _elapsed ) { \
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XP_LOGFF("held mutex for %lds", _elapsed); \
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} \
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pthread_mutex_unlock(&_state->mutex); \
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MUTEX_LOG( "released mutex %p", _state ); \
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} \
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#define WITH_MUTEX_LOCK_RELEASE(COMMS) { \
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CommsCtxt* _comms = COMMS; \
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pthread_mutex_lock(&_comms->mutex); \
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#define WITH_MUTEX_UNLOCK_RELEASE() \
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pthread_mutex_unlock(&_comms->mutex); \
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} \
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#ifdef DEBUG
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#define WITH_MUTEX WITH_MUTEX_LOCK_DEBUG
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#define END_WITH_MUTEX WITH_MUTEX_UNLOCK_DEBUG
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#else
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#define WITH_MUTEX WITH_MUTEX_LOCK_RELEASE
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#define END_WITH_MUTEX WITH_MUTEX_UNLOCK_RELEASE
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#endif
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void initMutex( MutexState* mutex, XP_Bool recursive );
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#endif
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