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136 lines
3.6 KiB
136 lines
3.6 KiB
// Copyright 2008 the V8 project authors. All rights reserved.
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// Redistribution and use in source and binary forms, with or without
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// modification, are permitted provided that the following conditions are
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// met:
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//
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// * Redistributions of source code must retain the above copyright
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// notice, this list of conditions and the following disclaimer.
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// * Redistributions in binary form must reproduce the above
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// copyright notice, this list of conditions and the following
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// disclaimer in the documentation and/or other materials provided
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// with the distribution.
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// * Neither the name of Google Inc. nor the names of its
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// contributors may be used to endorse or promote products derived
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// from this software without specific prior written permission.
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//
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// THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
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// "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
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// LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR
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// A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT
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// OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL,
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// SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT
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// LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
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// DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
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// THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
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// (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE
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// OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
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#include "v8.h"
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#include "platform.h"
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#include "cctest.h"
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TEST(Preemption) {
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v8::Locker locker;
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v8::V8::Initialize();
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v8::HandleScope scope;
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v8::Context::Scope context_scope(v8::Context::New());
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v8::Locker::StartPreemption(100);
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v8::Handle<v8::Script> script = v8::Script::Compile(
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v8::String::New("var count = 0; var obj = new Object(); count++;\n"));
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script->Run();
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v8::Locker::StopPreemption();
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v8::internal::OS::Sleep(500); // Make sure the timer fires.
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script->Run();
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}
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enum Turn {
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FILL_CACHE,
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CLEAN_CACHE,
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SECOND_TIME_FILL_CACHE,
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DONE
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};
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static Turn turn = FILL_CACHE;
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class ThreadA: public v8::internal::Thread {
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public:
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void Run() {
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v8::Locker locker;
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v8::HandleScope scope;
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v8::Context::Scope context_scope(v8::Context::New());
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CHECK_EQ(FILL_CACHE, turn);
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// Fill String.search cache.
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v8::Handle<v8::Script> script = v8::Script::Compile(
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v8::String::New(
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"for (var i = 0; i < 3; i++) {"
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" var result = \"a\".search(\"a\");"
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" if (result != 0) throw \"result: \" + result + \" @\" + i;"
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"};"
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"true"));
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CHECK(script->Run()->IsTrue());
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turn = CLEAN_CACHE;
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do {
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{
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v8::Unlocker unlocker;
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Thread::YieldCPU();
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}
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} while (turn != SECOND_TIME_FILL_CACHE);
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// Rerun the script.
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CHECK(script->Run()->IsTrue());
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turn = DONE;
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}
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};
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class ThreadB: public v8::internal::Thread {
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public:
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void Run() {
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do {
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{
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v8::Locker locker;
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if (turn == CLEAN_CACHE) {
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v8::HandleScope scope;
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v8::Context::Scope context_scope(v8::Context::New());
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// Clear the caches by forcing major GC.
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v8::internal::Heap::CollectAllGarbage(false);
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turn = SECOND_TIME_FILL_CACHE;
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break;
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}
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}
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Thread::YieldCPU();
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} while (true);
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}
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};
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TEST(JSFunctionResultCachesInTwoThreads) {
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v8::V8::Initialize();
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ThreadA threadA;
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ThreadB threadB;
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threadA.Start();
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threadB.Start();
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threadA.Join();
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threadB.Join();
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CHECK_EQ(DONE, turn);
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}
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