Charmap work

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

diff --git a/index/lockidx.c b/index/lockidx.c
index 75bec86..2c59bdd 100644 (file)
--- a/index/lockidx.c
+++ b/index/lockidx.c
@@ -4,7 +4,23 @@
  * Sebastian Hammer, Adam Dickmeiss
  *
  * $Log: lockidx.c,v $
- * Revision 1.2  1995-12-08 16:22:54  adam
+ * Revision 1.6  1996-03-26 16:01:13  adam
+ * New setting lockPath: directory of various lock files.
+ *
+ * Revision 1.5  1995/12/13  08:46:09  adam
+ * Locking uses F_WRLCK and F_RDLCK again!
+ *
+ * Revision 1.4  1995/12/12  16:00:57  adam
+ * System call sync(2) used after update/commit.
+ * Locking (based on fcntl) uses F_EXLCK and F_SHLCK instead of F_WRLCK
+ * and F_RDLCK.
+ *
+ * Revision 1.3  1995/12/11  11:43:29  adam
+ * Locking based on fcntl instead of flock.
+ * Setting commitEnable removed. Command line option -n can be used to
+ * prevent commit if commit setting is defined in the configuration file.
+ *
+ * Revision 1.2  1995/12/08  16:22:54  adam
  * Work on update while servers are running. Three lock files introduced.
  * The servers reload their registers when necessary, but they don't
  * reestablish result sets yet.
@@ -16,7 +32,6 @@
 #include <stdio.h>
 #include <assert.h>
 #include <unistd.h>
-#include <sys/file.h>
 #include <fcntl.h>
 #include <string.h>
 #include <errno.h>
@@ -38,7 +53,7 @@ int zebraIndexWait (int commitPhase)
 
     if (server_lock_cmt == -1)
     {
-        sprintf (path, "%s%s", FNAME_COMMIT_LOCK, pathPrefix);
+        sprintf (path, "%s%s", pathPrefix, FNAME_COMMIT_LOCK);
         if ((server_lock_cmt = open (path, O_CREAT|O_RDWR|O_SYNC, 0666))
             == -1)
         {
@@ -47,10 +62,10 @@ int zebraIndexWait (int commitPhase)
         }
     }
     else
-        flock (server_lock_cmt, LOCK_UN);
+        zebraUnlock (server_lock_cmt);
     if (server_lock_org == -1)
     {
-        sprintf (path, "%s%s", FNAME_ORG_LOCK, pathPrefix);
+        sprintf (path, "%s%s", pathPrefix, FNAME_ORG_LOCK);
         if ((server_lock_org = open (path, O_CREAT|O_RDWR|O_SYNC, 0666))
             == -1)
         {
@@ -59,12 +74,12 @@ int zebraIndexWait (int commitPhase)
         }
     }
     else
-        flock (server_lock_org, LOCK_UN);
+        zebraUnlock (server_lock_org);
     if (commitPhase)
         fd = server_lock_cmt;
     else
         fd = server_lock_org;
-    if (flock (fd, LOCK_EX|LOCK_NB) == -1)
+    if (zebraLockNB (fd, 1) == -1)
     {
         if (errno != EWOULDBLOCK)
         {
@@ -75,13 +90,13 @@ int zebraIndexWait (int commitPhase)
             logf (LOG_LOG, "Waiting for lock cmt");
         else
             logf (LOG_LOG, "Waiting for lock org");
-        if (flock (fd, LOCK_EX) == -1)
+        if (zebraLock (fd, 1) == -1)
         {
             logf (LOG_FATAL|LOG_ERRNO, "flock");
             exit (1);
         }
     }
-    flock (fd, LOCK_UN);
+    zebraUnlock (fd);
     return 0;
 }
 
@@ -130,17 +145,26 @@ void zebraIndexLock (int commitNow)
     sprintf (path, "%s%s", pathPrefix, FNAME_MAIN_LOCK);
     while (1)
     {
-        lock_fd = open (path, O_CREAT|O_RDWR|O_EXCL|O_SYNC, 0666);
+        lock_fd = open (path, O_CREAT|O_RDWR|O_EXCL, 0666);
         if (lock_fd == -1)
         {
-            lock_fd = open (path, O_RDONLY);
-            assert (lock_fd != -1);
-            if (flock (lock_fd, LOCK_EX|LOCK_NB) == -1)
+            lock_fd = open (path, O_RDWR);
+            if (lock_fd == -1) 
+            {
+                if (errno == ENOENT)
+                    continue;
+                logf (LOG_FATAL|LOG_ERRNO, "open %s", path);
+                exit (1);
+            }
+            logf (LOG_LOG, "zebraLockNB");
+            if (zebraLockNB (lock_fd, 1) == -1)
             {
                 if (errno == EWOULDBLOCK)
                 {
                     logf (LOG_LOG, "Waiting for other index process");
-                    flock (lock_fd, LOCK_EX);
+                    zebraLock (lock_fd, 1);
+                    zebraUnlock (lock_fd);
+                    close (lock_fd);
                     continue;
                 }
                 else
@@ -162,7 +186,7 @@ void zebraIndexLock (int commitNow)
                 }
                 else if (r == -1)
                 {
-                    logf (LOG_FATAL|LOG_ERRNO, "read  %s", path);
+                    logf (LOG_FATAL|LOG_ERRNO, "read %s", path);
                     exit (1);
                 }
                 if (*buf == 'r')
@@ -210,6 +234,6 @@ void zebraIndexLock (int commitNow)
         else
             break;
     }
-    flock (lock_fd, LOCK_EX);
+    zebraLock (lock_fd, 1);
 }