Mercurial > hg > webserver / file diff

--- /dev/null	Thu Jan 01 00:00:00 1970 +0000
+++ b/src/server/util/atomic.h	Tue Jan 01 13:32:04 2013 +0100
@@ -0,0 +1,59 @@
+/*
+ * DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS HEADER.
+ *
+ * Copyright 2011 Olaf Wintermann. All rights reserved.
+ *
+ * Redistribution and use in source and binary forms, with or without
+ * modification, are permitted provided that the following conditions are met:
+ *
+ *   1. Redistributions of source code must retain the above copyright
+ *      notice, this list of conditions and the following disclaimer.
+ *
+ *   2. Redistributions in binary form must reproduce the above copyright
+ *      notice, this list of conditions and the following disclaimer in the
+ *      documentation and/or other materials provided with the distribution.
+ *
+ * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS "AS IS"
+ * AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
+ * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
+ * ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT HOLDER OR CONTRIBUTORS BE
+ * LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR
+ * CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF
+ * SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS
+ * INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN
+ * CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE)
+ * ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE
+ * POSSIBILITY OF SUCH DAMAGE.
+ */
+
+#ifndef ATOMIC_H
+#define	ATOMIC_H
+
+#ifdef	__cplusplus
+extern "C" {
+#endif
+
+#ifdef __gnu_linux__
+
+#define ws_atomic_inc32(intptr) __sync_fetch_and_add(intptr, 1)
+#define ws_atomic_dec32(intptr) __sync_fetch_and_sub(intptr, 1)
+#define ws_atomic_add32(intptr, val) __sync_fetch_and_add(intptr, val)
+#define ws_atomic_sub32(intptr, val) __sync_fetch_and_sub(intptr, val)
+
+#else
+// use atomic.h
+#include <atomic.h>
+
+#define ws_atomic_inc32(intptr) ucx_atomic_dec_32_nv(intptr)
+#define ws_atomic_dec32(intptr) ucx_atomic_dec_32_nv(intptr)
+// TODO
+
+#endif
+
+
+#ifdef	__cplusplus
+}
+#endif
+
+#endif	/* ATOMIC_H */
+