gw-rwlock.h

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/*
 * gw-rwlock.h:  Prototypes for Reader/Writer Lock.
 *
 * Alexander Malysh <amalysh@kannel.org>, initial version 2004
 */

#ifndef GW_RWLOCK_H
#define GW_RWLOCK_H

#include "gw-config.h"
#ifndef HAVE_PTHREAD_RWLOCK
  #include "list.h"
#else
  #include <pthread.h>
#endif

typedef struct {
#ifdef HAVE_PTHREAD_RWLOCK
    pthread_rwlock_t rwlock;
#else
    List *rwlock;
    long writer;
#endif
    int dynamic;
} RWLock;

RWLock *gw_rwlock_create(void);
void gw_rwlock_init_static(RWLock *lock);
void gw_rwlock_destroy(RWLock *lock);
int gw_rwlock_rdlock(RWLock *lock);
int gw_rwlock_unlock(RWLock *lock);
int gw_rwlock_wrlock(RWLock *lock);

#endif