X-Git-Url: http://git.indexdata.com/?a=blobdiff_plain;f=include%2Fzebra-lock.h;fp=include%2Fzebra-lock.h;h=b7d61648de0462083d1803eb53e5b15e096878de;hb=eb2b742588ce07fb4516bbca22c93b938b13e433;hp=0000000000000000000000000000000000000000;hpb=83533000f9456dcab2fc171abafd84d6104d4087;p=idzebra-moved-to-github.git

diff --git a/include/zebra-lock.h b/include/zebra-lock.h
new file mode 100644
index 0000000..b7d6164
--- /dev/null
+++ b/include/zebra-lock.h
@@ -0,0 +1,37 @@
+
+#ifndef ZEBRA_LOCK_H
+#define ZEBRA_LOCK_H
+
+#if HAVE_PTHREAD_H
+#include <pthread.h>
+#endif
+
+#include <yaz/yconfig.h>
+
+YAZ_BEGIN_CDECL
+
+typedef struct {
+    pthread_mutex_t mutex;
+} Zebra_mutex;
+
+YAZ_EXPORT int zebra_mutex_init (Zebra_mutex *p);
+YAZ_EXPORT int zebra_mutex_destroy (Zebra_mutex *p);
+YAZ_EXPORT int zebra_mutex_lock (Zebra_mutex *p);
+YAZ_EXPORT int zebra_mutex_unlock (Zebra_mutex *p);
+
+typedef struct {
+    int readers_reading;
+    int writers_writing;
+    pthread_mutex_t mutex;
+    pthread_cond_t lock_free;
+} Zebra_lock_rdwr;
+
+YAZ_EXPORT int zebra_lock_rdwr_init (Zebra_lock_rdwr *p);
+YAZ_EXPORT int zebra_lock_rdwr_destroy (Zebra_lock_rdwr *p);
+YAZ_EXPORT int zebra_lock_rdwr_rlock (Zebra_lock_rdwr *p);
+YAZ_EXPORT int zebra_lock_rdwr_wlock (Zebra_lock_rdwr *p);
+YAZ_EXPORT int zebra_lock_rdwr_runlock (Zebra_lock_rdwr *p);
+YAZ_EXPORT int zebra_lock_rdwr_wunlock (Zebra_lock_rdwr *p);
+
+YAZ_END_CDECL
+#endif