9c2019b25c
Add wrappers to utils.h instead. BUG=none R=jkummerow@chromium.org LOG=n Review URL: https://codereview.chromium.org/328343003 git-svn-id: https://v8.googlecode.com/svn/branches/bleeding_edge@21846 ce2b1a6d-e550-0410-aec6-3dcde31c8c00
122 lines
4.5 KiB
C++
122 lines
4.5 KiB
C++
// Copyright 2014 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 "test/cctest/cctest.h"
|
|
|
|
using namespace v8::internal;
|
|
|
|
|
|
static void SetUpNewSpaceWithPoisonedMementoAtTop() {
|
|
Isolate* isolate = CcTest::i_isolate();
|
|
Heap* heap = isolate->heap();
|
|
NewSpace* new_space = heap->new_space();
|
|
|
|
// Make sure we can allocate some objects without causing a GC later.
|
|
heap->CollectAllGarbage(Heap::kAbortIncrementalMarkingMask);
|
|
|
|
// Allocate a string, the GC may suspect a memento behind the string.
|
|
Handle<SeqOneByteString> string =
|
|
isolate->factory()->NewRawOneByteString(12).ToHandleChecked();
|
|
CHECK(*string);
|
|
|
|
// Create an allocation memento behind the string with a garbage allocation
|
|
// site pointer.
|
|
AllocationMemento* memento =
|
|
reinterpret_cast<AllocationMemento*>(new_space->top() + kHeapObjectTag);
|
|
memento->set_map_no_write_barrier(heap->allocation_memento_map());
|
|
memento->set_allocation_site(
|
|
reinterpret_cast<AllocationSite*>(kHeapObjectTag), SKIP_WRITE_BARRIER);
|
|
}
|
|
|
|
|
|
TEST(Regress340063) {
|
|
CcTest::InitializeVM();
|
|
if (!i::FLAG_allocation_site_pretenuring) return;
|
|
v8::HandleScope scope(CcTest::isolate());
|
|
|
|
|
|
SetUpNewSpaceWithPoisonedMementoAtTop();
|
|
|
|
// Call GC to see if we can handle a poisonous memento right after the
|
|
// current new space top pointer.
|
|
CcTest::i_isolate()->heap()->CollectAllGarbage(
|
|
Heap::kAbortIncrementalMarkingMask);
|
|
}
|
|
|
|
|
|
TEST(BadMementoAfterTopForceScavenge) {
|
|
CcTest::InitializeVM();
|
|
if (!i::FLAG_allocation_site_pretenuring) return;
|
|
v8::HandleScope scope(CcTest::isolate());
|
|
|
|
SetUpNewSpaceWithPoisonedMementoAtTop();
|
|
|
|
// Force GC to test the poisoned memento handling
|
|
CcTest::i_isolate()->heap()->CollectGarbage(i::NEW_SPACE);
|
|
}
|
|
|
|
|
|
TEST(PretenuringCallNew) {
|
|
CcTest::InitializeVM();
|
|
if (!i::FLAG_allocation_site_pretenuring) return;
|
|
if (!i::FLAG_pretenuring_call_new) return;
|
|
|
|
v8::HandleScope scope(CcTest::isolate());
|
|
Isolate* isolate = CcTest::i_isolate();
|
|
Heap* heap = isolate->heap();
|
|
|
|
int call_count = 10;
|
|
i::ScopedVector<char> test_buf(1024);
|
|
const char* program =
|
|
"function f() {"
|
|
" this.a = 3;"
|
|
" this.b = {};"
|
|
" return this;"
|
|
"};"
|
|
"var a;"
|
|
"for(var i = 0; i < %d; i++) {"
|
|
" a = new f();"
|
|
"}"
|
|
"a;";
|
|
i::SNPrintF(test_buf, program, call_count);
|
|
v8::Local<v8::Value> res = CompileRun(test_buf.start());
|
|
Handle<JSObject> o =
|
|
v8::Utils::OpenHandle(*v8::Handle<v8::Object>::Cast(res));
|
|
|
|
// The object of class f should have a memento secreted behind it.
|
|
Address memento_address = o->address() + o->map()->instance_size();
|
|
AllocationMemento* memento =
|
|
reinterpret_cast<AllocationMemento*>(memento_address + kHeapObjectTag);
|
|
CHECK_EQ(memento->map(), heap->allocation_memento_map());
|
|
|
|
// Furthermore, how many mementos did we create? The count should match
|
|
// call_count. Note, that mementos are allocated during the inobject slack
|
|
// tracking phase.
|
|
AllocationSite* site = memento->GetAllocationSite();
|
|
CHECK_EQ(call_count, site->pretenure_create_count()->value());
|
|
}
|