Threading primitives separated.

2009-12-23 17:01:30 +01:00
parent 14f7091280
commit b1f35d0695
8 changed files with 530 additions and 394 deletions
@@ -0,0 +1,116 @@
+/*
+ * Copyright (C) 2008-2009 Tobias Brunner
+ * Copyright (C) 2008 Martin Willi
+ * Hochschule fuer Technik Rapperswil
+ *
+ * This program 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 Software Foundation; either version 2 of the License, or (at your
+ * option) any later version.  See <http://www.fsf.org/copyleft/gpl.txt>.
+ *
+ * This program is distributed in the hope that it will be useful, but
+ * WITHOUT ANY WARRANTY; without even the implied warranty of MERCHANTABILITY
+ * or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU General Public License
+ * for more details.
+ */
+
+#define _GNU_SOURCE
+#include <pthread.h>
+
+#include <threading.h>
+#include <library.h>
+#include <debug.h>
+
+#include "rwlock.h"
+#include "lock_profiler.h"
+
+/**
+ * Implementation of rwlock_t.read_lock
+ */
+static void read_lock(private_rwlock_t *this)
+{
+	int err;
+
+	profiler_start(&this->profile);
+	err = pthread_rwlock_rdlock(&this->rwlock);
+	if (err != 0)
+	{
+		DBG1("!!! RWLOCK READ LOCK ERROR: %s !!!", strerror(err));
+	}
+	profiler_end(&this->profile);
+}
+
+/**
+ * Implementation of rwlock_t.write_lock
+ */
+static void write_lock(private_rwlock_t *this)
+{
+	int err;
+
+	profiler_start(&this->profile);
+	err = pthread_rwlock_wrlock(&this->rwlock);
+	if (err != 0)
+	{
+		DBG1("!!! RWLOCK WRITE LOCK ERROR: %s !!!", strerror(err));
+	}
+	profiler_end(&this->profile);
+}
+
+/**
+ * Implementation of rwlock_t.try_write_lock
+ */
+static bool try_write_lock(private_rwlock_t *this)
+{
+	return pthread_rwlock_trywrlock(&this->rwlock) == 0;
+}
+
+/**
+ * Implementation of rwlock_t.unlock
+ */
+static void rw_unlock(private_rwlock_t *this)
+{
+	int err;
+
+	err = pthread_rwlock_unlock(&this->rwlock);
+	if (err != 0)
+	{
+		DBG1("!!! RWLOCK UNLOCK ERROR: %s !!!", strerror(err));
+	}
+}
+
+/**
+ * Implementation of rwlock_t.destroy
+ */
+static void rw_destroy(private_rwlock_t *this)
+{
+	pthread_rwlock_destroy(&this->rwlock);
+	profiler_cleanup(&this->profile);
+	free(this);
+}
+
+/*
+ * see header file
+ */
+rwlock_t *rwlock_create(rwlock_type_t type)
+{
+	switch (type)
+	{
+		case RWLOCK_TYPE_DEFAULT:
+		default:
+		{
+			private_rwlock_t *this = malloc_thing(private_rwlock_t);
+
+			this->public.read_lock = (void(*)(rwlock_t*))read_lock;
+			this->public.write_lock = (void(*)(rwlock_t*))write_lock;
+			this->public.try_write_lock = (bool(*)(rwlock_t*))try_write_lock;
+			this->public.unlock = (void(*)(rwlock_t*))rw_unlock;
+			this->public.destroy = (void(*)(rwlock_t*))rw_destroy;
+
+			pthread_rwlock_init(&this->rwlock, NULL);
+			profiler_init(&this->profile);
+
+			return &this->public;
+		}
+	}
+}
+