Work on new API. Locking system re-implemented

[idzebra-moved-to-github.git] / index / lockidx.c

diff --git a/index/lockidx.c b/index/lockidx.c
index 45f7261..4904de4 100644 (file)
--- a/index/lockidx.c
+++ b/index/lockidx.c
@@ -1,10 +1,31 @@
 /*
- * Copyright (C) 1994-1998, Index Data I/S 
+ * Copyright (C) 1994-1999, Index Data
  * All rights reserved.
  * Sebastian Hammer, Adam Dickmeiss
  *
  * $Log: lockidx.c,v $
- * Revision 1.14  1998-01-12 15:04:08  adam
+ * Revision 1.21  2002-02-20 17:30:01  adam
+ * Work on new API. Locking system re-implemented
+ *
+ * Revision 1.20  2000/10/16 20:16:00  adam
+ * Fixed problem with close of lock file for WIN32.
+ *
+ * Revision 1.19  2000/09/05 14:04:05  adam
+ * Updates for prefix 'yaz_' for YAZ log functions.
+ *
+ * Revision 1.18  2000/02/24 11:00:07  adam
+ * Fixed bug: indexer would run forever when lock dir was non-existant.
+ *
+ * Revision 1.17  1999/12/08 15:03:11  adam
+ * Implemented bf_reset.
+ *
+ * Revision 1.16  1999/02/02 14:50:57  adam
+ * Updated WIN32 code specific sections. Changed header.
+ *
+ * Revision 1.15  1998/02/17 10:31:33  adam
+ * Fixed bug in zebraIndexUnlock. On NT, the lock files wasn't removed.
+ *
+ * Revision 1.14  1998/01/12 15:04:08  adam
  * The test option (-s) only uses read-lock (and not write lock).
  *
  * Revision 1.13  1997/09/29 09:08:36  adam
@@ -58,7 +79,7 @@
  */
 #include <stdio.h>
 #include <assert.h>
-#ifdef WINDOWS
+#ifdef WIN32
 #include <io.h>
 #else
 #include <unistd.h>
@@ -68,12 +89,13 @@
 #include <errno.h>
 
 #include "index.h"
+#include "zserver.h"
 
 static ZebraLockHandle server_lock_main = NULL;
 static ZebraLockHandle server_lock_cmt = NULL;
 static ZebraLockHandle server_lock_org = NULL;
 
-int zebraIndexWait (int commitPhase)
+int zebraIndexWait (ZebraHandle zh, int commitPhase)
 {
     ZebraLockHandle h;
 
@@ -83,7 +105,7 @@ int zebraIndexWait (int commitPhase)
     {
        char path[1024];
 
-       zebra_lock_prefix (common_resource, path);
+       zebra_lock_prefix (zh->service->res, path);
        strcat (path, FNAME_COMMIT_LOCK);
        server_lock_cmt = zebra_lock_create (path, 1);
        if (!server_lock_cmt)
@@ -98,7 +120,7 @@ int zebraIndexWait (int commitPhase)
     {
        char path[1024];
 
-       zebra_lock_prefix (common_resource, path);
+       zebra_lock_prefix (zh->service->res, path);
        strcat (path, FNAME_ORG_LOCK);
        server_lock_org = zebra_lock_create (path, 1);
        if (!server_lock_org)
@@ -113,7 +135,7 @@ int zebraIndexWait (int commitPhase)
         h = server_lock_org;
     if (zebra_lock_nb (h))
     {
-#ifndef WINDOWS
+#ifndef WIN32
         if (errno != EWOULDBLOCK)
         {
             logf (LOG_FATAL|LOG_ERRNO, "flock");
@@ -135,7 +157,7 @@ int zebraIndexWait (int commitPhase)
 }
 
 
-void zebraIndexLockMsg (const char *str)
+void zebraIndexLockMsg (ZebraHandle zh, const char *str)
 {
     char path[1024];
     int l, r, fd;
@@ -150,31 +172,41 @@ void zebraIndexLockMsg (const char *str)
         logf (LOG_FATAL|LOG_ERRNO, "write lock file");
         exit (1);
     }
-    zebra_lock_prefix (common_resource, path);
+    zebra_lock_prefix (zh->service->res, path);
     strcat (path, FNAME_TOUCH_TIME);
     fd = creat (path, 0666);
     close (fd);
 }
 
-void zebraIndexUnlock (void)
+void zebraIndexUnlock (ZebraHandle zh)
 {
     char path[1024];
     
-    zebra_lock_prefix (common_resource, path);
+    zebra_lock_prefix (zh->service->res, path);
     strcat (path, FNAME_MAIN_LOCK);
-    unlink (path);
+#ifdef WIN32
+    zebra_lock_destroy (server_lock_main);
+    if (unlink (path) && errno != ENOENT)
+        logf (LOG_WARN|LOG_ERRNO, "unlink %s failed", path);
+#else
+    if (unlink (path) && errno != ENOENT)
+        logf (LOG_WARN|LOG_ERRNO, "unlink %s failed", path);
+    zebra_lock_destroy (server_lock_main);
+#endif
+    server_lock_main = 0;
 }
 
-void zebraIndexLock (BFiles bfs, int commitNow, const char *rval)
+int zebraIndexLock (BFiles bfs, ZebraHandle zh, int commitNow,
+                    const char *rval)
 {
     char path[1024];
     char buf[256];
     int r;
 
     if (server_lock_main)
-        return ;
+        return 0;
 
-    zebra_lock_prefix (common_resource, path);
+    zebra_lock_prefix (zh->service->res, path);
     strcat (path, FNAME_MAIN_LOCK);
     while (1)
     {
@@ -184,14 +216,12 @@ void zebraIndexLock (BFiles bfs, int commitNow, const char *rval)
             server_lock_main = zebra_lock_create (path, 1);
            if (!server_lock_main)
             {
-                if (errno == ENOENT)
-                    continue;
-                logf (LOG_FATAL|LOG_ERRNO, "open %s", path);
-                exit (1);
+                logf (LOG_FATAL, "couldn't obtain indexer lock");
+               exit (1);
             }
             if (zebra_lock_nb (server_lock_main) == -1)
             {
-#ifdef WINDOWS
+#ifdef WIN32
                 logf (LOG_LOG, "waiting for other index process");
                 zebra_lock (server_lock_main);
                 zebra_unlock (server_lock_main);
@@ -282,5 +312,6 @@ void zebraIndexLock (BFiles bfs, int commitNow, const char *rval)
             break;
     }
     zebra_lock (server_lock_main);
+    return 0;
 }