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// Copyright 2008 the V8 project authors. All rights reserved.
// Redistribution and use in source and binary forms, with or without
// modification, are permitted provided that the following conditions are
// met:
//
// * Redistributions of source code must retain the above copyright
// notice, this list of conditions and the following disclaimer.
// * 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.
// * Neither the name of Google Inc. nor the names of its
// contributors may be used to endorse or promote products derived
// from this software without specific prior written permission.
//
// THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND 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 THE COPYRIGHT
// OWNER 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 "v8.h"
#include "platform.h"
#include "cctest.h"
TEST(Preemption) {
v8::Locker locker;
v8::V8::Initialize();
v8::HandleScope scope;
v8::Context::Scope context_scope(v8::Context::New());
v8::Locker::StartPreemption(100);
v8::Handle<v8::Script> script = v8::Script::Compile(
v8::String::New("var count = 0; var obj = new Object(); count++;\n"));
script->Run();
v8::Locker::StopPreemption();
v8::internal::OS::Sleep(500); // Make sure the timer fires.
script->Run();
}
enum Turn {
FILL_CACHE,
CLEAN_CACHE,
SECOND_TIME_FILL_CACHE,
DONE
};
static Turn turn = FILL_CACHE;
class ThreadA: public v8::internal::Thread {
public:
void Run() {
v8::Locker locker;
v8::HandleScope scope;
v8::Context::Scope context_scope(v8::Context::New());
CHECK_EQ(FILL_CACHE, turn);
// Fill String.search cache.
v8::Handle<v8::Script> script = v8::Script::Compile(
v8::String::New(
"for (var i = 0; i < 3; i++) {"
" var result = \"a\".search(\"a\");"
" if (result != 0) throw \"result: \" + result + \" @\" + i;"
"};"
"true"));
CHECK(script->Run()->IsTrue());
turn = CLEAN_CACHE;
do {
{
v8::Unlocker unlocker;
Thread::YieldCPU();
}
} while (turn != SECOND_TIME_FILL_CACHE);
// Rerun the script.
CHECK(script->Run()->IsTrue());
turn = DONE;
}
};
class ThreadB: public v8::internal::Thread {
public:
void Run() {
do {
{
v8::Locker locker;
if (turn == CLEAN_CACHE) {
v8::HandleScope scope;
v8::Context::Scope context_scope(v8::Context::New());
// Clear the caches by forcing major GC.
v8::internal::Heap::CollectAllGarbage(false);
turn = SECOND_TIME_FILL_CACHE;
break;
}
}
Thread::YieldCPU();
} while (true);
}
};
TEST(JSFunctionResultCachesInTwoThreads) {
v8::V8::Initialize();
ThreadA threadA;
ThreadB threadB;
threadA.Start();
threadB.Start();
threadA.Join();
threadB.Join();
CHECK_EQ(DONE, turn);
}