Examples using Bib-1 use attributes

[idzebra-moved-to-github.git] / util / flock.c

diff --git a/util/flock.c b/util/flock.c
index 98a1590..317bd19 100644 (file)
--- a/util/flock.c
+++ b/util/flock.c
@@ -1,8 +1,5 @@
-/* $Id: flock.c,v 1.16 2006-07-03 13:40:58 adam Exp $
-   Copyright (C) 1995-2006
-   Index Data ApS
-
-This file is part of the Zebra server.
+/* This file is part of the Zebra server.
+   Copyright (C) Index Data
 
 Zebra 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
@@ -15,12 +12,15 @@ FITNESS FOR A PARTICULAR PURPOSE.  See the GNU General Public License
 for more details.
 
 You should have received a copy of the GNU General Public License
-along with Zebra; see the file LICENSE.zebra.  If not, write to the
-Free Software Foundation, 59 Temple Place - Suite 330, Boston, MA
-02111-1307, USA.
+along with this program; if not, write to the Free Software
+Foundation, Inc., 51 Franklin St, Fifth Floor, Boston, MA  02110-1301  USA
+
 */
 
 
+#if HAVE_CONFIG_H
+#include <config.h>
+#endif
 #include <stdio.h>
 #include <assert.h>
 #include <string.h>
@@ -40,9 +40,6 @@ Free Software Foundation, 59 Temple Place - Suite 330, Boston, MA
 #include <yaz/xmalloc.h>
 #include <yaz/log.h>
 
-/** whether this module should debug */
-#define DEBUG_FLOCK 1
-
 /** have this module (mutex) been initialized? */
 static int initialized = 0;
 
@@ -88,12 +85,12 @@ char *zebra_mk_fname(const char *dir, const char *name)
 {
     int dlen = dir ? strlen(dir) : 0;
     char *fname = xmalloc(dlen + strlen(name) + 3);
-    
+
 #ifdef WIN32
     if (dlen)
     {
         int last_one = dir[dlen-1];
-        
+
         if (!strchr("/\\:", last_one))
             sprintf(fname, "%s\\%s", dir, name);
         else
@@ -138,7 +135,7 @@ ZebraLockHandle zebra_lock_create(const char *dir, const char *name)
     if (!p)
     {   /* didn't match (or we didn't want it to match! */
         p = (struct zebra_lock_info *) xmalloc(sizeof(*p));
-        
+
         p->ref_count = 0;
 #ifdef WIN32
         p->fd = open(name, O_BINARY|O_RDONLY);
@@ -150,7 +147,7 @@ ZebraLockHandle zebra_lock_create(const char *dir, const char *name)
         if (p->fd == -1)
         {
             xfree(p);
-            yaz_log(YLOG_WARN | YLOG_ERRNO, 
+            yaz_log(YLOG_WARN | YLOG_ERRNO,
                     "zebra_lock_create fail fname=%s", fname);
             p = 0;
         }
@@ -246,16 +243,16 @@ static int unixLock(int fd, int type, int cmd)
         yaz_log(YLOG_WARN|YLOG_ERRNO, "fcntl FAIL type=%d fd=%d", type, fd);
     else
         yaz_log(log_level, "fcntl type=%d OK fd=%d", type, fd);
-    
+
     return r;
 }
 #endif
 
 int zebra_lock_w(ZebraLockHandle h)
 {
-    int r;
+    int r = 0;
     int do_lock = 0;
-    yaz_log(log_level, "zebra_lock_w fd=%d p=%p fname=%s begin", 
+    yaz_log(log_level, "zebra_lock_w fd=%d p=%p fname=%s begin",
             h->p->fd, h, h->p->fname);
 
 #ifdef WIN32
@@ -282,7 +279,7 @@ int zebra_lock_w(ZebraLockHandle h)
 
     h->write_flag = 1;
 #endif
-    yaz_log(log_level, "zebra_lock_w fd=%d p=%p fname=%s end", 
+    yaz_log(log_level, "zebra_lock_w fd=%d p=%p fname=%s end",
             h->p->fd, h, h->p->fname);
 
     return r;
@@ -290,10 +287,10 @@ int zebra_lock_w(ZebraLockHandle h)
 
 int zebra_lock_r(ZebraLockHandle h)
 {
-    int r;
+    int r = 0;
     int do_lock = 0;
 
-    yaz_log(log_level, "zebra_lock_r fd=%d p=%p fname=%s begin", 
+    yaz_log(log_level, "zebra_lock_r fd=%d p=%p fname=%s begin",
             h->p->fd, h, h->p->fname);
 #ifdef WIN32
     while ((r = _locking(h->p->fd, _LK_LOCK, 1)))
@@ -316,10 +313,10 @@ int zebra_lock_r(ZebraLockHandle h)
         assert(posix_locks);
     }
     zebra_mutex_unlock(&h->p->file_mutex);
-    
+
     h->write_flag = 0;
 #endif
-    yaz_log(log_level, "zebra_lock_r fd=%d p=%p fname=%s end", 
+    yaz_log(log_level, "zebra_lock_r fd=%d p=%p fname=%s end",
             h->p->fd, h, h->p->fname);
     return r;
 }
@@ -327,7 +324,6 @@ int zebra_lock_r(ZebraLockHandle h)
 int zebra_unlock(ZebraLockHandle h)
 {
     int r = 0;
-    int do_unlock = 0;
     yaz_log(log_level, "zebra_unlock fd=%d p=%p fname=%s begin",
             h->p->fd, h, h->p->fname);
 #ifdef WIN32
@@ -345,13 +341,13 @@ int zebra_unlock(ZebraLockHandle h)
             h->p->no_file_read_lock--;
     }
     if (h->p->no_file_read_lock == 0 && h->p->no_file_write_lock == 0)
-        do_unlock = 1;
-    if (do_unlock)
         r = unixLock(h->p->fd, F_UNLCK, F_SETLKW);
     else
     {
+        r = 0;
         assert(posix_locks);
     }
+
     zebra_mutex_unlock(&h->p->file_mutex);
 
     if (posix_locks)
@@ -367,12 +363,12 @@ int zebra_unlock(ZebraLockHandle h)
     return r;
 }
 
-/** \brief see if the fcntl locking is not POSIX 
+/** \brief see if the fcntl locking is not POSIX
  *
  * The default posix_locks=1 is assumed.. This function sets posix_locks
  * to zero if linuxthreads is in use.
  */
-static int check_for_linuxthreads()
+static int check_for_linuxthreads(void)
 {
 #if __linux
 #ifdef _CS_GNU_LIBPTHREAD_VERSION
@@ -398,19 +394,17 @@ void zebra_flock_init()
     {
         initialized = 1;
         log_level = yaz_log_module_level("flock");
-#if DEBUG_FLOCK
-        log_level = YLOG_LOG|YLOG_FLUSH;
-#endif
+        yaz_log(log_level, "zebra_flock_init");
         check_for_linuxthreads();
         zebra_mutex_init(&lock_list_mutex);
         yaz_log(log_level, "posix_locks: %d", posix_locks);
     }
-    yaz_log(log_level, "zebra_flock_init");
 }
 
 /*
  * Local variables:
  * c-basic-offset: 4
+ * c-file-style: "Stroustrup"
  * indent-tabs-mode: nil
  * End:
  * vim: shiftwidth=4 tabstop=8 expandtab