From b3abeb59d3df7065eac002e9addd65b0db0cf8c0 Mon Sep 17 00:00:00 2001
From: Mark Spencer <markster@digium.com>
Date: Tue, 14 May 2002 14:43:52 +0000
Subject: Version 0.1.12 from FTP

git-svn-id: https://origsvn.digium.com/svn/asterisk/trunk@448 65c4cc65-6c06-0410-ace0-fbb531ad65f3
---
 include/asterisk/lock.h | 107 ++++++++++++++++++++++++++++++++++++++++++++++++
 1 file changed, 107 insertions(+)
 create mode 100755 include/asterisk/lock.h

(limited to 'include')

diff --git a/include/asterisk/lock.h b/include/asterisk/lock.h
new file mode 100755
index 000000000..2a66b8ca2
--- /dev/null
+++ b/include/asterisk/lock.h
@@ -0,0 +1,107 @@
+/*
+ * Asterisk -- A telephony toolkit for Linux.
+ *
+ * General Asterisk channel definitions.
+ * 
+ * Copyright (C) 1999, Mark Spencer
+ *
+ * Mark Spencer <markster@linux-support.net>
+ *
+ * This program is free software, distributed under the terms of
+ * the GNU General Public License
+ */
+
+#ifndef _ASTERISK_LOCK_H
+#define _ASTERISK_LOCK_H
+
+#include <pthread.h>
+
+#ifdef DEBUG_THREADS
+
+#define TRIES 50
+
+#include <errno.h>
+#include <string.h>
+#include <stdio.h>
+#include <unistd.h>
+
+// #define AST_MUTEX_INITIALIZER      PTHREAD_RECURSIVE_MUTEX_INITIALIZER_NP
+// #define AST_MUTEX_KIND             PTHREAD_MUTEX_RECURSIVE_NP
+#ifdef PTHREAD_ERRORCHECK_MUTEX_INITIALIZER_NP
+#define AST_MUTEX_INITIALIZER         PTHREAD_ERRORCHECK_MUTEX_INITIALIZER_NP
+#define AST_MUTEX_KIND                PTHREAD_MUTEX_ERRORCHECK_NP
+#else
+#define AST_MUTEX_INITIALIZER      PTHREAD_RECURSIVE_MUTEX_INITIALIZER_NP
+#define AST_MUTEX_KIND             PTHREAD_MUTEX_RECURSIVE_NP
+#endif
+
+struct mutex_info {
+	pthread_mutex_t *mutex;
+	char *file;
+	int lineno;
+	char *func;
+	struct mutex_info *next;
+};
+
+static inline int ast_pthread_mutex_init(pthread_mutex_t *t) {
+	static pthread_mutexattr_t  attr;
+	static int  init = 1;
+	extern int  pthread_mutexattr_setkind_np(pthread_mutexattr_t *, int);
+
+	if (init) {
+		pthread_mutexattr_init(&attr);
+		pthread_mutexattr_setkind_np(&attr, AST_MUTEX_KIND);
+		init = 0;
+	}
+	return pthread_mutex_init(t, &attr);
+}
+
+static inline int __ast_pthread_mutex_lock(char *filename, int lineno, char *func, pthread_mutex_t *t) {
+	int res;
+	int tries = TRIES;
+	do {
+		res = pthread_mutex_trylock(t);
+		/* If we can't run, yield */
+		if (res) {
+			sched_yield();
+			usleep(1);
+		}
+	} while(res && tries--);
+	if (res) {
+		fprintf(stderr, "%s line %d (%s): Error obtaining mutex: %s\n", 
+				filename, lineno, func, strerror(res));
+		if ((res = pthread_mutex_lock(t)))
+                        fprintf(stderr, "%s line %d (%s): Error waiting for mutex: %s\n", 
+                               filename, lineno, func, strerror(res));
+                else
+		        fprintf(stderr, "%s line %d (%s): Got it eventually...\n",
+			       filename, lineno, func);
+	}
+	return res;
+}
+
+#define ast_pthread_mutex_lock(a) __ast_pthread_mutex_lock(__FILE__, __LINE__, __PRETTY_FUNCTION__, a)
+
+static inline int __ast_pthread_mutex_unlock(char *filename, int lineno, char *func, pthread_mutex_t *t) {
+	int res;
+	res = pthread_mutex_unlock(t);
+	if (res) 
+		fprintf(stderr, "%s line %d (%s): Error releasing mutex: %s\n", 
+				filename, lineno, func, strerror(res));
+	return res;
+}
+
+#define ast_pthread_mutex_unlock(a) __ast_pthread_mutex_unlock(__FILE__, __LINE__, __PRETTY_FUNCTION__, a)
+
+#else
+
+#define AST_MUTEX_INITIALIZER      PTHREAD_MUTEX_INITIALIZER
+#define AST_MUTEX_KIND             PTHREAD_MUTEX_FAST_NP
+
+#define ast_pthread_mutex_initi(mutex,kind) pthread_mutex_init(mutex)
+#define ast_pthread_mutex_lock pthread_mutex_lock
+#define ast_pthread_mutex_unlock pthread_mutex_unlock
+
+#endif
+
+#endif
-- 
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