Fix lock problem with command=bytarget&block=1

[pazpar2-moved-to-github.git] / src / ppmutex.h

diff --git a/src/ppmutex.h b/src/ppmutex.h
index f1f6e24..f47dfd9 100644 (file)
--- a/src/ppmutex.h
+++ b/src/ppmutex.h
@@ -1,5 +1,5 @@
 /* This file is part of Pazpar2.
-   Copyright (C) 2006-2011 Index Data
+   Copyright (C) 2006-2013 Index Data
 
 Pazpar2 is free software; you can redistribute it and/or modify it under
 the terms of the GNU General Public License as published by the Free
@@ -22,14 +22,36 @@ Foundation, Inc., 51 Franklin St, Fifth Floor, Boston, MA  02110-1301  USA
 */
 
 #ifndef PAZPAR2_PPMUTEX_H
-#define PAZPAR2_PPMUTEXF_H
+#define PAZPAR2_PPMUTEX_H
 
 #include <yaz/mutex.h>
 
+#if YAZ_POSIX_THREADS
+#include <pthread.h>
+#endif
+
 void pazpar2_mutex_init(void);
 
 void pazpar2_mutex_create(YAZ_MUTEX *p, const char *name);
 
+typedef struct {
+    int readers_reading;
+    int writers_writing;
+#if YAZ_POSIX_THREADS
+    pthread_mutex_t mutex;
+    pthread_cond_t lock_free;
+#endif
+} Pazpar2_lock_rdwr;
+
+void pazpar2_lock_rdwr_init(Pazpar2_lock_rdwr *p);
+void pazpar2_lock_rdwr_destroy(Pazpar2_lock_rdwr *p);
+void pazpar2_lock_rdwr_rlock(Pazpar2_lock_rdwr *p);
+void pazpar2_lock_rdwr_wlock(Pazpar2_lock_rdwr *p);
+void pazpar2_lock_rdwr_runlock(Pazpar2_lock_rdwr *p);
+void pazpar2_lock_rdwr_wunlock(Pazpar2_lock_rdwr *p);
+void pazpar2_lock_rdwr_upgrade(Pazpar2_lock_rdwr *p);
+void pazpar2_lock_rdwr_downgrade(Pazpar2_lock_rdwr *p);
+
 #endif
 
 /*