Mercurial > hg > dav / file diff

--- /dev/null	Thu Jan 01 00:00:00 1970 +0000
+++ b/libidav/atomic.h	Sat Jun 20 19:00:56 2026 +0200
@@ -0,0 +1,57 @@
+/*
+ * DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS HEADER.
+ *
+ * Copyright 2013 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 DAV_ATOMIC_H
+#define	DAV_ATOMIC_H
+
+#ifdef	__cplusplus
+extern "C" {
+#endif
+
+#if defined(__gnu_linux__) || defined(OSX) || defined(BSD)
+
+#define dav_atomic_inc32(intptr) __sync_fetch_and_add(intptr, 1)
+#define dav_atomic_dec32(intptr) (__sync_fetch_and_sub(intptr, 1) - 1)
+
+#else
+// use atomic.h
+#include <atomic.h>
+
+#define dav_atomic_inc32(intptr) atomic_inc_32_nv(intptr)
+#define dav_atomic_dec32(intptr) atomic_dec_32_nv(intptr)
+// TODO
+
+#endif
+
+
+#ifdef	__cplusplus
+}
+#endif
+
+#endif	/* DAV_ATOMIC_H */
+