webkitgtk-2.16.5HEADwebkitgtk-2.16.5master

1 files changed, 374 insertions, 0 deletions

diff --git a/Source/JavaScriptCore/API/tests/ExecutionTimeLimitTest.cpp b/Source/JavaScriptCore/API/tests/ExecutionTimeLimitTest.cpp
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index 000000000..d5e53243b
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+++ b/Source/JavaScriptCore/API/tests/ExecutionTimeLimitTest.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 "ExecutionTimeLimitTest.h"
+
+#include "InitializeThreading.h"
+#include "JSContextRefPrivate.h"
+#include "JavaScriptCore.h"
+#include "Options.h"
+#include <chrono>
+#include <wtf/CurrentTime.h>
+#include <wtf/text/StringBuilder.h>
+
+using namespace std::chrono;
+using JSC::Options;
+
+static JSGlobalContextRef context = nullptr;
+
+static JSValueRef currentCPUTimeAsJSFunctionCallback(JSContextRef ctx, JSObjectRef functionObject, JSObjectRef thisObject, size_t argumentCount, const JSValueRef arguments[], JSValueRef* exception)
+{
+    UNUSED_PARAM(functionObject);
+    UNUSED_PARAM(thisObject);
+    UNUSED_PARAM(argumentCount);
+    UNUSED_PARAM(arguments);
+    UNUSED_PARAM(exception);
+    
+    ASSERT(JSContextGetGlobalContext(ctx) == context);
+    return JSValueMakeNumber(ctx, currentCPUTime().count() / 1000000.);
+}
+
+bool shouldTerminateCallbackWasCalled = false;
+static bool shouldTerminateCallback(JSContextRef, void*)
+{
+    shouldTerminateCallbackWasCalled = true;
+    return true;
+}
+
+bool cancelTerminateCallbackWasCalled = false;
+static bool cancelTerminateCallback(JSContextRef, void*)
+{
+    cancelTerminateCallbackWasCalled = true;
+    return false;
+}
+
+int extendTerminateCallbackCalled = 0;
+static bool extendTerminateCallback(JSContextRef ctx, void*)
+{
+    extendTerminateCallbackCalled++;
+    if (extendTerminateCallbackCalled == 1) {
+        JSContextGroupRef contextGroup = JSContextGetGroup(ctx);
+        JSContextGroupSetExecutionTimeLimit(contextGroup, .200f, extendTerminateCallback, 0);
+        return false;
+    }
+    return true;
+}
+
+struct TierOptions {
+    const char* tier;
+    unsigned timeLimitAdjustmentMillis;
+    const char* optionsStr;
+};
+
+static void testResetAfterTimeout(bool& failed)
+{
+    JSValueRef v = nullptr;
+    JSValueRef exception = nullptr;
+    const char* reentryScript = "100";
+    JSStringRef script = JSStringCreateWithUTF8CString(reentryScript);
+    v = JSEvaluateScript(context, script, nullptr, nullptr, 1, &exception);
+    if (exception) {
+        printf("FAIL: Watchdog timeout was not reset.\n");
+        failed = true;
+    } else if (!JSValueIsNumber(context, v) || JSValueToNumber(context, v, nullptr) != 100) {
+        printf("FAIL: Script result is not as expected.\n");
+        failed = true;
+    }
+}
+
+int testExecutionTimeLimit()
+{
+    static const TierOptions tierOptionsList[] = {
+        { "LLINT",    0,   "--useConcurrentJIT=false --useLLInt=true --useJIT=false" },
+        { "Baseline", 0,   "--useConcurrentJIT=false --useLLInt=true --useJIT=true --useDFGJIT=false" },
+        { "DFG",      0,   "--useConcurrentJIT=false --useLLInt=true --useJIT=true --useDFGJIT=true --useFTLJIT=false" },
+        { "FTL",      200, "--useConcurrentJIT=false --useLLInt=true --useJIT=true --useDFGJIT=true --useFTLJIT=true" },
+    };
+    
+    bool failed = false;
+
+    JSC::initializeThreading();
+    Options::initialize(); // Ensure options is initialized first.
+
+    for (auto tierOptions : tierOptionsList) {
+        StringBuilder savedOptionsBuilder;
+        Options::dumpAllOptionsInALine(savedOptionsBuilder);
+
+        Options::setOptions(tierOptions.optionsStr);
+        
+        unsigned tierAdjustmentMillis = tierOptions.timeLimitAdjustmentMillis;
+        double timeLimit;
+
+        context = JSGlobalContextCreateInGroup(nullptr, nullptr);
+
+        JSContextGroupRef contextGroup = JSContextGetGroup(context);
+        JSObjectRef globalObject = JSContextGetGlobalObject(context);
+        ASSERT(JSValueIsObject(context, globalObject));
+
+        JSValueRef exception = nullptr;
+
+        JSStringRef currentCPUTimeStr = JSStringCreateWithUTF8CString("currentCPUTime");
+        JSObjectRef currentCPUTimeFunction = JSObjectMakeFunctionWithCallback(context, currentCPUTimeStr, currentCPUTimeAsJSFunctionCallback);
+        JSObjectSetProperty(context, globalObject, currentCPUTimeStr, currentCPUTimeFunction, kJSPropertyAttributeNone, nullptr);
+        JSStringRelease(currentCPUTimeStr);
+        
+        /* Test script timeout: */
+        timeLimit = (100 + tierAdjustmentMillis) / 1000.0;
+        JSContextGroupSetExecutionTimeLimit(contextGroup, timeLimit, shouldTerminateCallback, 0);
+        {
+            unsigned timeAfterWatchdogShouldHaveFired = 300 + tierAdjustmentMillis;
+
+            StringBuilder scriptBuilder;
+            scriptBuilder.appendLiteral("function foo() { var startTime = currentCPUTime(); while (true) { for (var i = 0; i < 1000; i++); if (currentCPUTime() - startTime > ");
+            scriptBuilder.appendNumber(timeAfterWatchdogShouldHaveFired / 1000.0);
+            scriptBuilder.appendLiteral(") break; } } foo();");
+
+            JSStringRef script = JSStringCreateWithUTF8CString(scriptBuilder.toString().utf8().data());
+            exception = nullptr;
+            shouldTerminateCallbackWasCalled = false;
+            auto startTime = currentCPUTime();
+            JSEvaluateScript(context, script, nullptr, nullptr, 1, &exception);
+            auto endTime = currentCPUTime();
+
+            if (((endTime - startTime) < milliseconds(timeAfterWatchdogShouldHaveFired)) && shouldTerminateCallbackWasCalled)
+                printf("PASS: %s script timed out as expected.\n", tierOptions.tier);
+            else {
+                if ((endTime - startTime) >= milliseconds(timeAfterWatchdogShouldHaveFired))
+                    printf("FAIL: %s script did not time out as expected.\n", tierOptions.tier);
+                if (!shouldTerminateCallbackWasCalled)
+                    printf("FAIL: %s script timeout callback was not called.\n", tierOptions.tier);
+                failed = true;
+            }
+            
+            if (!exception) {
+                printf("FAIL: %s TerminatedExecutionException was not thrown.\n", tierOptions.tier);
+                failed = true;
+            }
+
+            testResetAfterTimeout(failed);
+        }
+
+        /* Test script timeout with tail calls: */
+        timeLimit = (100 + tierAdjustmentMillis) / 1000.0;
+        JSContextGroupSetExecutionTimeLimit(contextGroup, timeLimit, shouldTerminateCallback, 0);
+        {
+            unsigned timeAfterWatchdogShouldHaveFired = 300 + tierAdjustmentMillis;
+
+            StringBuilder scriptBuilder;
+            scriptBuilder.appendLiteral("var startTime = currentCPUTime();"
+                                 "function recurse(i) {"
+                                     "'use strict';"
+                                     "if (i % 1000 === 0) {"
+                                        "if (currentCPUTime() - startTime >");
+            scriptBuilder.appendNumber(timeAfterWatchdogShouldHaveFired / 1000.0);
+            scriptBuilder.appendLiteral("       ) { return; }");
+            scriptBuilder.appendLiteral("    }");
+            scriptBuilder.appendLiteral("    return recurse(i + 1); }");
+            scriptBuilder.appendLiteral("recurse(0);");
+
+            JSStringRef script = JSStringCreateWithUTF8CString(scriptBuilder.toString().utf8().data());
+            exception = nullptr;
+            shouldTerminateCallbackWasCalled = false;
+            auto startTime = currentCPUTime();
+            JSEvaluateScript(context, script, nullptr, nullptr, 1, &exception);
+            auto endTime = currentCPUTime();
+
+            if (((endTime - startTime) < milliseconds(timeAfterWatchdogShouldHaveFired)) && shouldTerminateCallbackWasCalled)
+                printf("PASS: %s script with infinite tail calls timed out as expected .\n", tierOptions.tier);
+            else {
+                if ((endTime - startTime) >= milliseconds(timeAfterWatchdogShouldHaveFired))
+                    printf("FAIL: %s script with infinite tail calls did not time out as expected.\n", tierOptions.tier);
+                if (!shouldTerminateCallbackWasCalled)
+                    printf("FAIL: %s script with infinite tail calls' timeout callback was not called.\n", tierOptions.tier);
+                failed = true;
+            }
+            
+            if (!exception) {
+                printf("FAIL: %s TerminatedExecutionException was not thrown.\n", tierOptions.tier);
+                failed = true;
+            }
+
+            testResetAfterTimeout(failed);
+        }
+
+        /* Test the script timeout's TerminatedExecutionException should NOT be catchable: */
+        timeLimit = (100 + tierAdjustmentMillis) / 1000.0;
+        JSContextGroupSetExecutionTimeLimit(contextGroup, timeLimit, shouldTerminateCallback, 0);
+        {
+            unsigned timeAfterWatchdogShouldHaveFired = 300 + tierAdjustmentMillis;
+            
+            StringBuilder scriptBuilder;
+            scriptBuilder.appendLiteral("function foo() { var startTime = currentCPUTime(); try { while (true) { for (var i = 0; i < 1000; i++); if (currentCPUTime() - startTime > ");
+            scriptBuilder.appendNumber(timeAfterWatchdogShouldHaveFired / 1000.0);
+            scriptBuilder.appendLiteral(") break; } } catch(e) { } } foo();");
+
+            JSStringRef script = JSStringCreateWithUTF8CString(scriptBuilder.toString().utf8().data());
+            exception = nullptr;
+            shouldTerminateCallbackWasCalled = false;
+
+            auto startTime = currentCPUTime();
+            JSEvaluateScript(context, script, nullptr, nullptr, 1, &exception);
+            auto endTime = currentCPUTime();
+            
+            if (((endTime - startTime) >= milliseconds(timeAfterWatchdogShouldHaveFired)) || !shouldTerminateCallbackWasCalled) {
+                if (!((endTime - startTime) < milliseconds(timeAfterWatchdogShouldHaveFired)))
+                    printf("FAIL: %s script did not time out as expected.\n", tierOptions.tier);
+                if (!shouldTerminateCallbackWasCalled)
+                    printf("FAIL: %s script timeout callback was not called.\n", tierOptions.tier);
+                failed = true;
+            }
+            
+            if (exception)
+                printf("PASS: %s TerminatedExecutionException was not catchable as expected.\n", tierOptions.tier);
+            else {
+                printf("FAIL: %s TerminatedExecutionException was caught.\n", tierOptions.tier);
+                failed = true;
+            }
+
+            testResetAfterTimeout(failed);
+        }
+        
+        /* Test script timeout with no callback: */
+        timeLimit = (100 + tierAdjustmentMillis) / 1000.0;
+        JSContextGroupSetExecutionTimeLimit(contextGroup, timeLimit, 0, 0);
+        {
+            unsigned timeAfterWatchdogShouldHaveFired = 300 + tierAdjustmentMillis;
+            
+            StringBuilder scriptBuilder;
+            scriptBuilder.appendLiteral("function foo() { var startTime = currentCPUTime(); while (true) { for (var i = 0; i < 1000; i++); if (currentCPUTime() - startTime > ");
+            scriptBuilder.appendNumber(timeAfterWatchdogShouldHaveFired / 1000.0);
+            scriptBuilder.appendLiteral(") break; } } foo();");
+            
+            JSStringRef script = JSStringCreateWithUTF8CString(scriptBuilder.toString().utf8().data());
+            exception = nullptr;
+            shouldTerminateCallbackWasCalled = false;
+
+            auto startTime = currentCPUTime();
+            JSEvaluateScript(context, script, nullptr, nullptr, 1, &exception);
+            auto endTime = currentCPUTime();
+            
+            if (((endTime - startTime) < milliseconds(timeAfterWatchdogShouldHaveFired)) && !shouldTerminateCallbackWasCalled)
+                printf("PASS: %s script timed out as expected when no callback is specified.\n", tierOptions.tier);
+            else {
+                if ((endTime - startTime) >= milliseconds(timeAfterWatchdogShouldHaveFired))
+                    printf("FAIL: %s script did not time out as expected when no callback is specified.\n", tierOptions.tier);
+                else
+                    printf("FAIL: %s script called stale callback function.\n", tierOptions.tier);
+                failed = true;
+            }
+            
+            if (!exception) {
+                printf("FAIL: %s TerminatedExecutionException was not thrown.\n", tierOptions.tier);
+                failed = true;
+            }
+
+            testResetAfterTimeout(failed);
+        }
+        
+        /* Test script timeout cancellation: */
+        timeLimit = (100 + tierAdjustmentMillis) / 1000.0;
+        JSContextGroupSetExecutionTimeLimit(contextGroup, timeLimit, cancelTerminateCallback, 0);
+        {
+            unsigned timeAfterWatchdogShouldHaveFired = 300 + tierAdjustmentMillis;
+            
+            StringBuilder scriptBuilder;
+            scriptBuilder.appendLiteral("function foo() { var startTime = currentCPUTime(); while (true) { for (var i = 0; i < 1000; i++); if (currentCPUTime() - startTime > ");
+            scriptBuilder.appendNumber(timeAfterWatchdogShouldHaveFired / 1000.0);
+            scriptBuilder.appendLiteral(") break; } } foo();");
+
+            JSStringRef script = JSStringCreateWithUTF8CString(scriptBuilder.toString().utf8().data());
+            exception = nullptr;
+            cancelTerminateCallbackWasCalled = false;
+
+            auto startTime = currentCPUTime();
+            JSEvaluateScript(context, script, nullptr, nullptr, 1, &exception);
+            auto endTime = currentCPUTime();
+            
+            if (((endTime - startTime) >= milliseconds(timeAfterWatchdogShouldHaveFired)) && cancelTerminateCallbackWasCalled && !exception)
+                printf("PASS: %s script timeout was cancelled as expected.\n", tierOptions.tier);
+            else {
+                if (((endTime - startTime) < milliseconds(timeAfterWatchdogShouldHaveFired)) || exception)
+                    printf("FAIL: %s script timeout was not cancelled.\n", tierOptions.tier);
+                if (!cancelTerminateCallbackWasCalled)
+                    printf("FAIL: %s script timeout callback was not called.\n", tierOptions.tier);
+                failed = true;
+            }
+            
+            if (exception) {
+                printf("FAIL: %s Unexpected TerminatedExecutionException thrown.\n", tierOptions.tier);
+                failed = true;
+            }
+        }
+        
+        /* Test script timeout extension: */
+        timeLimit = (100 + tierAdjustmentMillis) / 1000.0;
+        JSContextGroupSetExecutionTimeLimit(contextGroup, timeLimit, extendTerminateCallback, 0);
+        {
+            unsigned timeBeforeExtendedDeadline = 250 + tierAdjustmentMillis;
+            unsigned timeAfterExtendedDeadline = 600 + tierAdjustmentMillis;
+            unsigned maxBusyLoopTime = 750 + tierAdjustmentMillis;
+
+            StringBuilder scriptBuilder;
+            scriptBuilder.appendLiteral("function foo() { var startTime = currentCPUTime(); while (true) { for (var i = 0; i < 1000; i++); if (currentCPUTime() - startTime > ");
+            scriptBuilder.appendNumber(maxBusyLoopTime / 1000.0); // in seconds.
+            scriptBuilder.appendLiteral(") break; } } foo();");
+
+            JSStringRef script = JSStringCreateWithUTF8CString(scriptBuilder.toString().utf8().data());
+            exception = nullptr;
+            extendTerminateCallbackCalled = 0;
+
+            auto startTime = currentCPUTime();
+            JSEvaluateScript(context, script, nullptr, nullptr, 1, &exception);
+            auto endTime = currentCPUTime();
+            auto deltaTime = endTime - startTime;
+            
+            if ((deltaTime >= milliseconds(timeBeforeExtendedDeadline)) && (deltaTime < milliseconds(timeAfterExtendedDeadline)) && (extendTerminateCallbackCalled == 2) && exception)
+                printf("PASS: %s script timeout was extended as expected.\n", tierOptions.tier);
+            else {
+                if (deltaTime < milliseconds(timeBeforeExtendedDeadline))
+                    printf("FAIL: %s script timeout was not extended as expected.\n", tierOptions.tier);
+                else if (deltaTime >= milliseconds(timeAfterExtendedDeadline))
+                    printf("FAIL: %s script did not timeout.\n", tierOptions.tier);
+                
+                if (extendTerminateCallbackCalled < 1)
+                    printf("FAIL: %s script timeout callback was not called.\n", tierOptions.tier);
+                if (extendTerminateCallbackCalled < 2)
+                    printf("FAIL: %s script timeout callback was not called after timeout extension.\n", tierOptions.tier);
+                
+                if (!exception)
+                    printf("FAIL: %s TerminatedExecutionException was not thrown during timeout extension test.\n", tierOptions.tier);
+                
+                failed = true;
+            }
+        }
+
+        JSGlobalContextRelease(context);
+
+        Options::setOptions(savedOptionsBuilder.toString().ascii().data());
+    }
+    
+    return failed;
+}