X-Git-Url: http://git.indexdata.com/?a=blobdiff_plain;f=include%2Fyaz%2Fmutex.h;h=ff8babbd429865dccfa61fe8ebd18c8664cfcf2f;hb=df1a0cf4e1b057630ead09d185ca9ef0deddda2e;hp=6ef4382bfc0d6db97419c18c11fd4144560c70ee;hpb=79c68f7855e83d0a9c641dadb8a0a378cf343c92;p=yaz-moved-to-github.git

diff --git a/include/yaz/mutex.h b/include/yaz/mutex.h
index 6ef4382..ff8babb 100644
--- a/include/yaz/mutex.h
+++ b/include/yaz/mutex.h
@@ -33,6 +33,7 @@
 #define YAZ_MUTEX_H
 
 #include <stddef.h>
+#include <time.h>
 #include <yaz/yconfig.h>
 
 YAZ_BEGIN_CDECL
@@ -40,6 +41,9 @@ YAZ_BEGIN_CDECL
 /** \brief YAZ MUTEX opaque pointer */
 typedef struct yaz_mutex *YAZ_MUTEX;
 
+/** \brief YAZ condition opaque pointer */
+typedef struct yaz_cond *YAZ_COND;
+
 /** \brief create MUTEX
     \param mutexp is pointer to MUTEX handle (*mutexp must be NULL)
     
@@ -48,6 +52,17 @@ typedef struct yaz_mutex *YAZ_MUTEX;
  */
 YAZ_EXPORT void yaz_mutex_create(YAZ_MUTEX *mutexp);
 
+/** \brief create MUTEX with custom MUTEX flags
+    \param mutexp is pointer to MUTEX handle (*mutexp must be NULL)
+    \param attr is flags defined by PTHREAD_MUTEX_xxx
+
+    It is important that *mutexp is NULL. If not, yaz_mutex_create will
+    not modify the handle (assumes it is already created!)
+
+    This calls yax_mutex_create_attr(mutexp, PTHREAD_MUTEX_NORMAL)
+ */
+YAZ_EXPORT void yaz_mutex_create_attr(YAZ_MUTEX *mutexp, int flags);
+
 /** \brief enter critical section / AKA lock
     \param mutex MUTEX handle
  */
@@ -80,8 +95,49 @@ YAZ_EXPORT void yaz_mutex_destroy(YAZ_MUTEX *mutexp);
     This function should be called after a MUTEX is created but before
     it is used for locking.
  */
+YAZ_EXPORT
 void yaz_mutex_set_name(YAZ_MUTEX mutex, int log_level, const char *name);
 
+/** \brief creates condition variable
+    \param p reference to condition handle
+    
+    Upon successful completion *p holds the condition handle; *p = 0
+    on error.
+*/
+YAZ_EXPORT void yaz_cond_create(YAZ_COND *p);
+
+/** \brief destroys condition variable
+    \param p reference to condition handle
+    
+    Upon completion *p holds 0.
+*/
+YAZ_EXPORT
+void yaz_cond_destroy(YAZ_COND *p);
+
+struct timeval;
+
+/** \brief waits for condition
+    \param p condition variable handle
+    \param m mutex
+    \param abstime wait until this time; 0 for indefinite wait
+
+    Semantics like pthread_cond_wait.
+*/
+YAZ_EXPORT
+int yaz_cond_wait(YAZ_COND p, YAZ_MUTEX m, const struct timeval *abstime);
+
+/** \brief unblock one thread waiting for block
+    \param p condition variable handle
+*/
+YAZ_EXPORT
+int yaz_cond_signal(YAZ_COND p);
+
+/** \brief unblock all threads waiting for block
+    \param p condition variable handle
+*/
+YAZ_EXPORT
+int yaz_cond_broadcast(YAZ_COND p);
+
 YAZ_END_CDECL
 
 #endif