New PHP5 APC - version 3.0.18, using PHP5 5.2.0-8+etch10,

[php5-apc.git] / apc_fcntl.c

diff --git a/apc_fcntl.c b/apc_fcntl.c
new file mode 100644 (file)
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+++ b/apc_fcntl.c
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+/*
+  +----------------------------------------------------------------------+
+  | APC                                                                  |
+  +----------------------------------------------------------------------+
+  | Copyright (c) 2006 The PHP Group                                     |
+  +----------------------------------------------------------------------+
+  | This source file is subject to version 3.01 of the PHP license,      |
+  | that is bundled with this package in the file LICENSE, and is        |
+  | available through the world-wide-web at the following url:           |
+  | http://www.php.net/license/3_01.txt                                  |
+  | If you did not receive a copy of the PHP license and are unable to   |
+  | obtain it through the world-wide-web, please send a note to          |
+  | license@php.net so we can mail you a copy immediately.               |
+  +----------------------------------------------------------------------+
+  | Authors: George Schlossnagle <george@omniti.com>                     |
+  |          Rasmus Lerdorf <rasmus@php.net>                             |
+  +----------------------------------------------------------------------+
+
+   This software was contributed to PHP by Community Connect Inc. in 2002
+   and revised in 2005 by Yahoo! Inc. to add support for PHP 5.1.
+   Future revisions and derivatives of this source code must acknowledge
+   Community Connect Inc. as the original contributor of this module by
+   leaving this note intact in the source code.
+
+   All other licensing and usage conditions are those of the PHP Group.
+
+ */
+
+/* $Id: apc_fcntl.c,v 3.25 2006/06/19 02:52:49 rasmus Exp $ */
+
+#include "apc_fcntl.h"
+#include "apc.h"
+#include <unistd.h>
+#include <fcntl.h>
+
+int apc_fcntl_create(const char* pathname)
+{
+    int fd;
+    if(pathname == NULL) {
+        char lock_path[] = "/tmp/.apc.XXXXXX";
+        mktemp(lock_path);
+        fd = open(lock_path, O_RDWR|O_CREAT, 0666);
+        if(fd > 0 ) {
+            unlink(lock_path);
+            return fd;
+        } else {
+            apc_eprint("apc_fcntl_create: open(%s, O_RDWR|O_CREAT, 0666) failed:", lock_path);
+            return -1;
+        }
+    }
+    fd = open(pathname, O_RDWR|O_CREAT, 0666);
+    if(fd > 0 ) {
+        unlink(pathname);
+        return fd;
+    }
+    apc_eprint("apc_fcntl_create: open(%s, O_RDWR|O_CREAT, 0666) failed:", pathname);
+    return -1;
+}
+
+void apc_fcntl_destroy(int fd)
+{
+    close(fd);
+}
+
+static int lock_reg(int fd, int cmd, int type, off_t offset, int whence, off_t len)
+{
+  int ret;
+  struct flock lock;
+
+  lock.l_type = type;
+  lock.l_start = offset;
+  lock.l_whence = whence;
+  lock.l_len = len;
+  lock.l_pid = 0;
+
+  do { ret = fcntl(fd, cmd, &lock) ; }
+  while(ret < 0 && errno == EINTR);
+  return(ret);
+}
+
+void apc_fcntl_lock(int fd)
+{
+    if(lock_reg(fd, F_SETLKW, F_WRLCK, 0, SEEK_SET, 0) < 0) {
+        apc_eprint("apc_fcntl_lock failed:");
+    }
+}
+
+void apc_fcntl_rdlock(int fd)
+{
+    if(lock_reg(fd, F_SETLKW, F_RDLCK, 0, SEEK_SET, 0) < 0) {
+        apc_eprint("apc_fcntl_rdlock failed:");
+    }
+}
+
+zend_bool apc_fcntl_nonblocking_lock(int fd)
+{
+    if(lock_reg(fd, F_SETLK, F_WRLCK, 0, SEEK_SET, 0) < 0) {
+        if(errno==EACCES||errno==EAGAIN) return 0;
+        else apc_eprint("apc_fcntl_lock failed:");
+    }
+    return 1;
+}
+
+void apc_fcntl_unlock(int fd)
+{
+    if(lock_reg(fd, F_SETLKW, F_UNLCK, 0, SEEK_SET, 0) < 0) {
+        apc_eprint("apc_fcntl_unlock failed:");
+    }
+}
+
+/*
+ * Local variables:
+ * tab-width: 4
+ * c-basic-offset: 4
+ * End:
+ * vim600: expandtab sw=4 ts=4 sts=4 fdm=marker
+ * vim<600: expandtab sw=4 ts=4 sts=4
+ */