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authorLorry Tar Creator <lorry-tar-importer@lorry>2017-06-27 06:07:23 +0000
committerLorry Tar Creator <lorry-tar-importer@lorry>2017-06-27 06:07:23 +0000
commit1bf1084f2b10c3b47fd1a588d85d21ed0eb41d0c (patch)
tree46dcd36c86e7fbc6e5df36deb463b33e9967a6f7 /Source/JavaScriptCore/API/tests/PingPongStackOverflowTest.cpp
parent32761a6cee1d0dee366b885b7b9c777e67885688 (diff)
downloadWebKitGtk-tarball-master.tar.gz
Diffstat (limited to 'Source/JavaScriptCore/API/tests/PingPongStackOverflowTest.cpp')
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diff --git a/Source/JavaScriptCore/API/tests/PingPongStackOverflowTest.cpp b/Source/JavaScriptCore/API/tests/PingPongStackOverflowTest.cpp
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+++ b/Source/JavaScriptCore/API/tests/PingPongStackOverflowTest.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. AND ITS 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 APPLE INC. OR ITS 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 "PingPongStackOverflowTest.h"
+
+#include "InitializeThreading.h"
+#include "JSContextRefPrivate.h"
+#include "JavaScriptCore.h"
+#include "Options.h"
+#include <wtf/text/StringBuilder.h>
+
+using JSC::Options;
+
+static JSGlobalContextRef context = nullptr;
+static int nativeRecursionCount = 0;
+
+static bool PingPongStackOverflowObject_hasInstance(JSContextRef context, JSObjectRef constructor, JSValueRef possibleValue, JSValueRef* exception)
+{
+ UNUSED_PARAM(context);
+ UNUSED_PARAM(constructor);
+
+ JSStringRef hasInstanceName = JSStringCreateWithUTF8CString("hasInstance");
+ JSValueRef hasInstance = JSObjectGetProperty(context, constructor, hasInstanceName, exception);
+ JSStringRelease(hasInstanceName);
+ if (!hasInstance)
+ return false;
+
+ int countAtEntry = nativeRecursionCount++;
+
+ JSValueRef result = 0;
+ if (nativeRecursionCount < 100) {
+ JSObjectRef function = JSValueToObject(context, hasInstance, exception);
+ result = JSObjectCallAsFunction(context, function, constructor, 1, &possibleValue, exception);
+ } else {
+ StringBuilder builder;
+ builder.appendLiteral("dummy.valueOf([0]");
+ for (int i = 1; i < 35000; i++) {
+ builder.appendLiteral(", [");
+ builder.appendNumber(i);
+ builder.appendLiteral("]");
+ }
+ builder.appendLiteral(");");
+
+ JSStringRef script = JSStringCreateWithUTF8CString(builder.toString().utf8().data());
+ result = JSEvaluateScript(context, script, NULL, NULL, 1, exception);
+ JSStringRelease(script);
+ }
+
+ --nativeRecursionCount;
+ if (nativeRecursionCount != countAtEntry)
+ printf(" ERROR: PingPongStackOverflow test saw a recursion count mismatch\n");
+
+ return result && JSValueToBoolean(context, result);
+}
+
+JSClassDefinition PingPongStackOverflowObject_definition = {
+ 0,
+ kJSClassAttributeNone,
+
+ "PingPongStackOverflowObject",
+ NULL,
+
+ NULL,
+ NULL,
+
+ NULL,
+ NULL,
+ NULL,
+ NULL,
+ NULL,
+ NULL,
+ NULL,
+ NULL,
+ NULL,
+ PingPongStackOverflowObject_hasInstance,
+ NULL,
+};
+
+static JSClassRef PingPongStackOverflowObject_class(JSContextRef context)
+{
+ UNUSED_PARAM(context);
+
+ static JSClassRef jsClass;
+ if (!jsClass)
+ jsClass = JSClassCreate(&PingPongStackOverflowObject_definition);
+
+ return jsClass;
+}
+
+// This tests tests a stack overflow on VM reentry into a JS function from a native function
+// after ping-pong'ing back and forth between JS and native functions multiple times.
+// This test should not hang or crash.
+int testPingPongStackOverflow()
+{
+ bool failed = false;
+
+ JSC::initializeThreading();
+ Options::initialize(); // Ensure options is initialized first.
+
+ auto origSoftReservedZoneSize = Options::softReservedZoneSize();
+ auto origReservedZoneSize = Options::reservedZoneSize();
+ auto origUseLLInt = Options::useLLInt();
+ auto origMaxPerThreadStackUsage = Options::maxPerThreadStackUsage();
+
+ Options::softReservedZoneSize() = 128 * KB;
+ Options::reservedZoneSize() = 64 * KB;
+#if ENABLE(JIT)
+ // Normally, we want to disable the LLINT to force the use of JITted code which is necessary for
+ // reproducing the regression in https://bugs.webkit.org/show_bug.cgi?id=148749. However, we only
+ // want to do this if the LLINT isn't the only available execution engine.
+ Options::useLLInt() = false;
+#endif
+
+ const char* scriptString =
+ "var count = 0;" \
+ "PingPongStackOverflowObject.hasInstance = function f() {" \
+ " return (undefined instanceof PingPongStackOverflowObject);" \
+ "};" \
+ "PingPongStackOverflowObject.__proto__ = undefined;" \
+ "undefined instanceof PingPongStackOverflowObject;";
+
+ JSValueRef scriptResult = nullptr;
+ JSValueRef exception = nullptr;
+ JSStringRef script = JSStringCreateWithUTF8CString(scriptString);
+
+ nativeRecursionCount = 0;
+ context = JSGlobalContextCreateInGroup(nullptr, nullptr);
+
+ JSObjectRef globalObject = JSContextGetGlobalObject(context);
+ ASSERT(JSValueIsObject(context, globalObject));
+
+ JSObjectRef PingPongStackOverflowObject = JSObjectMake(context, PingPongStackOverflowObject_class(context), NULL);
+ JSStringRef PingPongStackOverflowObjectString = JSStringCreateWithUTF8CString("PingPongStackOverflowObject");
+ JSObjectSetProperty(context, globalObject, PingPongStackOverflowObjectString, PingPongStackOverflowObject, kJSPropertyAttributeNone, NULL);
+ JSStringRelease(PingPongStackOverflowObjectString);
+
+ unsigned stackSize = 32 * KB;
+ Options::maxPerThreadStackUsage() = stackSize + Options::softReservedZoneSize();
+
+ exception = nullptr;
+ scriptResult = JSEvaluateScript(context, script, nullptr, nullptr, 1, &exception);
+
+ if (!exception) {
+ printf("FAIL: PingPongStackOverflowError not thrown in PingPongStackOverflow test\n");
+ failed = true;
+ } else if (nativeRecursionCount) {
+ printf("FAIL: Unbalanced native recursion count: %d in PingPongStackOverflow test\n", nativeRecursionCount);
+ failed = true;
+ } else {
+ printf("PASS: PingPongStackOverflow test.\n");
+ }
+
+ Options::softReservedZoneSize() = origSoftReservedZoneSize;
+ Options::reservedZoneSize() = origReservedZoneSize;
+ Options::useLLInt() = origUseLLInt;
+ Options::maxPerThreadStackUsage() = origMaxPerThreadStackUsage;
+
+ return failed;
+}