New nmem utility, nmem_transfer, that transfer blocks from one

[yaz-moved-to-github.git] / util / nmem.c

diff --git a/util/nmem.c b/util/nmem.c
index 418962a..5f55cee 100644 (file)
--- a/util/nmem.c
+++ b/util/nmem.c
@@ -4,7 +4,17 @@
  * Sebastian Hammer, Adam Dickmeiss
  *
  * $Log: nmem.c,v $
- * Revision 1.10  1998-07-20 12:35:57  adam
+ * Revision 1.13  1998-10-19 15:24:21  adam
+ * New nmem utility, nmem_transfer, that transfer blocks from one
+ * NMEM to another.
+ *
+ * Revision 1.12  1998/10/13 16:00:18  adam
+ * Implemented nmem_critical_{enter,leave}.
+ *
+ * Revision 1.11  1998/08/21 14:13:36  adam
+ * Added GNU Configure script to build Makefiles.
+ *
+ * Revision 1.10  1998/07/20 12:35:57  adam
  * Added more memory diagnostics (when NMEM_DEBUG is 1).
  *
  * Revision 1.9  1998/07/07 15:49:01  adam
@@ -52,7 +62,13 @@
 #ifdef WINDOWS
 #include <windows.h>
 #elif _REENTRANT
+
+#if HAVE_PTHREAD_H
 #include <pthread.h>
+#elif HAVE_THREAD_H
+#include <thread.h>
+#endif
+
 #endif
 
 #define NMEM_CHUNK (4*1024)
@@ -62,7 +78,7 @@ static CRITICAL_SECTION critical_section;
 #define NMEM_ENTER EnterCriticalSection(&critical_section)
 #define NMEM_LEAVE LeaveCriticalSection(&critical_section)
 #elif _REENTRANT
-static pthread_mutex_t nmem_mutex;
+static pthread_mutex_t nmem_mutex = PTHREAD_MUTEX_INITIALIZER;
 #define NMEM_ENTER pthread_mutex_lock(&nmem_mutex);
 #define NMEM_LEAVE pthread_mutex_unlock(&nmem_mutex);
 #else
@@ -138,8 +154,8 @@ void nmem_reset(NMEM n)
        n->blocks = n->blocks->next;
        free_block(t);
     }
-    NMEM_LEAVE;
     n->total = 0;
+    NMEM_LEAVE;
 }
 
 #if NMEM_DEBUG
@@ -225,6 +241,29 @@ void nmem_destroy(NMEM n)
 #endif
 }
 
+void nmem_transfer (NMEM dst, NMEM src)
+{
+    nmem_block *t;
+    while ((t=src->blocks))
+    {
+       src->blocks = t->next;
+       t->next = dst->blocks;
+       dst->blocks = t;
+    }
+    dst->total += src->total;
+    src->total = 0;
+}
+
+void nmem_critical_enter (void)
+{
+    NMEM_ENTER;
+}
+
+void nmem_critical_leave (void)
+{
+    NMEM_LEAVE;
+}
+
 void nmem_init (void)
 {
 #ifdef WINDOWS