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authorLorry Tar Creator <lorry-tar-importer@lorry>2016-04-10 09:28:39 +0000
committerLorry Tar Creator <lorry-tar-importer@lorry>2016-04-10 09:28:39 +0000
commit32761a6cee1d0dee366b885b7b9c777e67885688 (patch)
treed6bec92bebfb216f4126356e55518842c2f476a1 /Source/JavaScriptCore/jit/ExecutableAllocationFuzz.cpp
parenta4e969f4965059196ca948db781e52f7cfebf19e (diff)
downloadWebKitGtk-tarball-32761a6cee1d0dee366b885b7b9c777e67885688.tar.gz
webkitgtk-2.4.11webkitgtk-2.4.11
Diffstat (limited to 'Source/JavaScriptCore/jit/ExecutableAllocationFuzz.cpp')
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diff --git a/Source/JavaScriptCore/jit/ExecutableAllocationFuzz.cpp b/Source/JavaScriptCore/jit/ExecutableAllocationFuzz.cpp
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-/*
- * Copyright (C) 2015 Apple Inc. 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 APPLE INC. ``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 APPLE INC. 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.
- */
-
-#include "config.h"
-#include "ExecutableAllocationFuzz.h"
-
-#include "TestRunnerUtils.h"
-#include <wtf/Atomics.h>
-#include <wtf/DataLog.h>
-
-namespace JSC {
-
-static Atomic<unsigned> s_numberOfExecutableAllocationFuzzChecks;
-unsigned numberOfExecutableAllocationFuzzChecks()
-{
- return s_numberOfExecutableAllocationFuzzChecks.load();
-}
-
-ExecutableAllocationFuzzResult doExecutableAllocationFuzzing()
-{
- ASSERT(Options::useExecutableAllocationFuzz());
-
- unsigned oldValue;
- unsigned newValue;
- do {
- oldValue = s_numberOfExecutableAllocationFuzzChecks.load();
- newValue = oldValue + 1;
- } while (!s_numberOfExecutableAllocationFuzzChecks.compareExchangeWeak(oldValue, newValue));
-
- if (newValue == Options::fireExecutableAllocationFuzzAt()) {
- if (Options::verboseExecutableAllocationFuzz()) {
- dataLog("Will pretend to fail executable allocation.\n");
- WTFReportBacktrace();
- }
- return PretendToFailExecutableAllocation;
- }
-
- if (Options::fireExecutableAllocationFuzzAtOrAfter()
- && newValue >= Options::fireExecutableAllocationFuzzAtOrAfter()) {
- if (Options::verboseExecutableAllocationFuzz()) {
- dataLog("Will pretend to fail executable allocation.\n");
- WTFReportBacktrace();
- }
- return PretendToFailExecutableAllocation;
- }
-
- return AllowNormalExecutableAllocation;
-}
-
-} // namespace JSC
-