1 files changed, 64 insertions, 0 deletions
diff --git a/src/system_wrappers/source/atomic32_posix.cc b/src/system_wrappers/source/atomic32_posix.cc
new file mode 100644
index 0000000000..05b0e57456
--- /dev/null
+++ b/src/system_wrappers/source/atomic32_posix.cc
@@ -0,0 +1,64 @@
+/*
+ *  Copyright (c) 2012 The WebRTC project authors. All Rights Reserved.
+ *
+ *  Use of this source code is governed by a BSD-style license
+ *  that can be found in the LICENSE file in the root of the source
+ *  tree. An additional intellectual property rights grant can be found
+ *  in the file PATENTS.  All contributing project authors may
+ *  be found in the AUTHORS file in the root of the source tree.
+ */
+
+#include "atomic32.h"
+
+#include <assert.h>
+#include <inttypes.h>
+#include <malloc.h>
+
+#include "common_types.h"
+
+namespace webrtc {
+
+Atomic32::Atomic32(WebRtc_Word32 initialValue) : _value(initialValue)
+{
+    assert(Is32bitAligned());
+}
+
+Atomic32::~Atomic32()
+{
+}
+
+WebRtc_Word32 Atomic32::operator++()
+{
+    return __sync_fetch_and_add(&_value, 1) + 1;
+}
+
+WebRtc_Word32 Atomic32::operator--()
+{
+    return __sync_fetch_and_sub(&_value, 1) - 1;
+}
+
+WebRtc_Word32 Atomic32::operator+=(WebRtc_Word32 value)
+{
+    WebRtc_Word32 returnValue = __sync_fetch_and_add(&_value, value);
+    returnValue += value;
+    return returnValue;
+}
+
+WebRtc_Word32 Atomic32::operator-=(WebRtc_Word32 value)
+{
+    WebRtc_Word32 returnValue = __sync_fetch_and_sub(&_value, value);
+    returnValue -= value;
+    return returnValue;
+}
+
+bool Atomic32::CompareExchange(WebRtc_Word32 newValue,
+                               WebRtc_Word32 compareValue)
+{
+    return __sync_bool_compare_and_swap(&_value, compareValue, newValue);
+}
+
+WebRtc_Word32 Atomic32::Value() const
+{
+    return _value;
+}
+} // namespace webrtc