From e630ee25d6e756c31ebdd4112d0acd783279b155 Mon Sep 17 00:00:00 2001
From: =?utf8?q?Johannes=20Schl=C3=BCter?= <johannes@php.net>
Date: Tue, 20 Nov 2007 21:24:35 +0000
Subject: [PATCH] Add msg_queue_exists() function (Benjamin Schulz)

---
 ext/sysvmsg/php_sysvmsg.h  |  1 +
 ext/sysvmsg/sysvmsg.c      | 19 +++++++++++++++++++
 ext/sysvmsg/tests/003.phpt | 25 +++++++++++++++++++++++++
 3 files changed, 45 insertions(+)
 create mode 100644 ext/sysvmsg/tests/003.phpt

diff --git a/ext/sysvmsg/php_sysvmsg.h b/ext/sysvmsg/php_sysvmsg.h
index 70be76720a..d98edd4da1 100644
--- a/ext/sysvmsg/php_sysvmsg.h
+++ b/ext/sysvmsg/php_sysvmsg.h
@@ -48,6 +48,7 @@ PHP_FUNCTION(msg_stat_queue);
 PHP_FUNCTION(msg_set_queue);
 PHP_FUNCTION(msg_send);
 PHP_FUNCTION(msg_receive);
+PHP_FUNCTION(msg_queue_exists);
 
 typedef struct {
 	key_t key;
diff --git a/ext/sysvmsg/sysvmsg.c b/ext/sysvmsg/sysvmsg.c
index ca76101641..09b196537f 100644
--- a/ext/sysvmsg/sysvmsg.c
+++ b/ext/sysvmsg/sysvmsg.c
@@ -73,6 +73,7 @@ const zend_function_entry sysvmsg_functions[] = {
 	PHP_FE(msg_remove_queue,			NULL)
 	PHP_FE(msg_stat_queue,				NULL)
 	PHP_FE(msg_set_queue,				NULL)
+	PHP_FE(msg_queue_exists,			NULL)
 	{NULL, NULL, NULL}	/* Must be the last line in sysvmsg_functions[] */
 };
 /* }}} */
@@ -217,6 +218,24 @@ PHP_FUNCTION(msg_stat_queue)
 }
 /* }}} */
 
+/* {{{ proto bool msg_queue_exists(int key)
+   Check wether a message queue exists */
+PHP_FUNCTION(msg_queue_exists)
+{
+	long key;
+
+	if (zend_parse_parameters(ZEND_NUM_ARGS() TSRMLS_CC, "l", &key) == FAILURE)	{
+		return;
+	}
+
+	if (msgget(key, 0) < 0) {
+		RETURN_FALSE;
+	}
+
+	RETURN_TRUE;
+}
+/* }}} */
+
 /* {{{ proto resource msg_get_queue(int key [, int perms]) U
    Attach to a message queue */
 PHP_FUNCTION(msg_get_queue)
diff --git a/ext/sysvmsg/tests/003.phpt b/ext/sysvmsg/tests/003.phpt
new file mode 100644
index 0000000000..66ff046dd0
--- /dev/null
+++ b/ext/sysvmsg/tests/003.phpt
@@ -0,0 +1,25 @@
+--TEST--
+msg_queue_exists()
+--SKIPIF--
+<?php if (!extension_loaded("sysvmsg")) die("skip sysvmsg extension is not available")?>
+--FILE--
+<?php
+$id = ftok(__FILE__, 'r');
+
+msg_remove_queue(msg_get_queue($id, 0600));
+
+var_dump(msg_queue_exists($id));
+$res = msg_get_queue($id, 0600);
+var_dump($res);
+var_dump(msg_queue_exists($id));
+var_dump(msg_remove_queue($res));
+var_dump(msg_queue_exists($id));
+echo "Done\n";
+?>
+--EXPECTF--
+bool(false)
+resource(%d) of type (sysvmsg queue)
+bool(true)
+bool(true)
+bool(false)
+Done
-- 
2.50.1