v8/test/cctest/test-spaces.cc

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// Copyright 2011 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 <stdlib.h>
#include "src/base/platform/platform.h"
#include "src/snapshot.h"
#include "src/v8.h"
#include "test/cctest/cctest.h"
using namespace v8::internal;
#if 0
static void VerifyRegionMarking(Address page_start) {
#ifdef ENABLE_CARDMARKING_WRITE_BARRIER
Page* p = Page::FromAddress(page_start);
p->SetRegionMarks(Page::kAllRegionsCleanMarks);
for (Address addr = p->ObjectAreaStart();
addr < p->ObjectAreaEnd();
addr += kPointerSize) {
CHECK(!Page::FromAddress(addr)->IsRegionDirty(addr));
}
for (Address addr = p->ObjectAreaStart();
addr < p->ObjectAreaEnd();
addr += kPointerSize) {
Page::FromAddress(addr)->MarkRegionDirty(addr);
}
for (Address addr = p->ObjectAreaStart();
addr < p->ObjectAreaEnd();
addr += kPointerSize) {
CHECK(Page::FromAddress(addr)->IsRegionDirty(addr));
}
#endif
}
#endif
// TODO(gc) you can no longer allocate pages like this. Details are hidden.
#if 0
TEST(Page) {
byte* mem = NewArray<byte>(2*Page::kPageSize);
CHECK(mem != NULL);
Address start = reinterpret_cast<Address>(mem);
Address page_start = RoundUp(start, Page::kPageSize);
Page* p = Page::FromAddress(page_start);
// Initialized Page has heap pointer, normally set by memory_allocator.
p->heap_ = CcTest::heap();
CHECK(p->address() == page_start);
CHECK(p->is_valid());
p->opaque_header = 0;
p->SetIsLargeObjectPage(false);
CHECK(!p->next_page()->is_valid());
CHECK(p->ObjectAreaStart() == page_start + Page::kObjectStartOffset);
CHECK(p->ObjectAreaEnd() == page_start + Page::kPageSize);
CHECK(p->Offset(page_start + Page::kObjectStartOffset) ==
Page::kObjectStartOffset);
CHECK(p->Offset(page_start + Page::kPageSize) == Page::kPageSize);
CHECK(p->OffsetToAddress(Page::kObjectStartOffset) == p->ObjectAreaStart());
CHECK(p->OffsetToAddress(Page::kPageSize) == p->ObjectAreaEnd());
// test region marking
VerifyRegionMarking(page_start);
DeleteArray(mem);
}
#endif
namespace v8 {
namespace internal {
// Temporarily sets a given allocator in an isolate.
class TestMemoryAllocatorScope {
public:
TestMemoryAllocatorScope(Isolate* isolate, MemoryAllocator* allocator)
: isolate_(isolate),
old_allocator_(isolate->memory_allocator_) {
isolate->memory_allocator_ = allocator;
}
~TestMemoryAllocatorScope() {
isolate_->memory_allocator_ = old_allocator_;
}
private:
Isolate* isolate_;
MemoryAllocator* old_allocator_;
DISALLOW_COPY_AND_ASSIGN(TestMemoryAllocatorScope);
};
// Temporarily sets a given code range in an isolate.
class TestCodeRangeScope {
public:
TestCodeRangeScope(Isolate* isolate, CodeRange* code_range)
: isolate_(isolate),
old_code_range_(isolate->code_range_) {
isolate->code_range_ = code_range;
}
~TestCodeRangeScope() {
isolate_->code_range_ = old_code_range_;
}
private:
Isolate* isolate_;
CodeRange* old_code_range_;
DISALLOW_COPY_AND_ASSIGN(TestCodeRangeScope);
};
} } // namespace v8::internal
static void VerifyMemoryChunk(Isolate* isolate,
Heap* heap,
CodeRange* code_range,
size_t reserve_area_size,
size_t commit_area_size,
size_t second_commit_area_size,
Executability executable) {
MemoryAllocator* memory_allocator = new MemoryAllocator(isolate);
CHECK(memory_allocator->SetUp(heap->MaxReserved(),
heap->MaxExecutableSize()));
TestMemoryAllocatorScope test_allocator_scope(isolate, memory_allocator);
TestCodeRangeScope test_code_range_scope(isolate, code_range);
size_t header_size = (executable == EXECUTABLE)
? MemoryAllocator::CodePageGuardStartOffset()
: MemoryChunk::kObjectStartOffset;
size_t guard_size = (executable == EXECUTABLE)
? MemoryAllocator::CodePageGuardSize()
: 0;
MemoryChunk* memory_chunk = memory_allocator->AllocateChunk(reserve_area_size,
commit_area_size,
executable,
NULL);
size_t alignment = code_range != NULL && code_range->valid() ?
MemoryChunk::kAlignment : v8::base::OS::CommitPageSize();
size_t reserved_size =
((executable == EXECUTABLE))
? RoundUp(header_size + guard_size + reserve_area_size + guard_size,
alignment)
: RoundUp(header_size + reserve_area_size,
v8::base::OS::CommitPageSize());
CHECK(memory_chunk->size() == reserved_size);
CHECK(memory_chunk->area_start() < memory_chunk->address() +
memory_chunk->size());
CHECK(memory_chunk->area_end() <= memory_chunk->address() +
memory_chunk->size());
CHECK(static_cast<size_t>(memory_chunk->area_size()) == commit_area_size);
Address area_start = memory_chunk->area_start();
memory_chunk->CommitArea(second_commit_area_size);
CHECK(area_start == memory_chunk->area_start());
CHECK(memory_chunk->area_start() < memory_chunk->address() +
memory_chunk->size());
CHECK(memory_chunk->area_end() <= memory_chunk->address() +
memory_chunk->size());
CHECK(static_cast<size_t>(memory_chunk->area_size()) ==
second_commit_area_size);
memory_allocator->Free(memory_chunk);
memory_allocator->TearDown();
delete memory_allocator;
}
TEST(Regress3540) {
Isolate* isolate = CcTest::i_isolate();
Heap* heap = isolate->heap();
MemoryAllocator* memory_allocator = new MemoryAllocator(isolate);
CHECK(
memory_allocator->SetUp(heap->MaxReserved(), heap->MaxExecutableSize()));
TestMemoryAllocatorScope test_allocator_scope(isolate, memory_allocator);
CodeRange* code_range = new CodeRange(isolate);
const size_t code_range_size = 4 * MB;
if (!code_range->SetUp(
code_range_size +
RoundUp(v8::base::OS::CommitPageSize() * kReservedCodeRangePages,
MemoryChunk::kAlignment))) {
return;
}
Address address;
size_t size;
address = code_range->AllocateRawMemory(code_range_size - MB,
code_range_size - MB, &size);
CHECK(address != NULL);
Address null_address;
size_t null_size;
null_address = code_range->AllocateRawMemory(
code_range_size - MB, code_range_size - MB, &null_size);
CHECK(null_address == NULL);
code_range->FreeRawMemory(address, size);
delete code_range;
memory_allocator->TearDown();
delete memory_allocator;
}
static unsigned int Pseudorandom() {
static uint32_t lo = 2345;
lo = 18273 * (lo & 0xFFFFF) + (lo >> 16);
return lo & 0xFFFFF;
}
TEST(MemoryChunk) {
Isolate* isolate = CcTest::i_isolate();
Heap* heap = isolate->heap();
size_t reserve_area_size = 1 * MB;
size_t initial_commit_area_size, second_commit_area_size;
for (int i = 0; i < 100; i++) {
initial_commit_area_size = Pseudorandom();
second_commit_area_size = Pseudorandom();
// With CodeRange.
CodeRange* code_range = new CodeRange(isolate);
const size_t code_range_size = 32 * MB;
if (!code_range->SetUp(code_range_size)) return;
VerifyMemoryChunk(isolate,
heap,
code_range,
reserve_area_size,
initial_commit_area_size,
second_commit_area_size,
EXECUTABLE);
VerifyMemoryChunk(isolate,
heap,
code_range,
reserve_area_size,
initial_commit_area_size,
second_commit_area_size,
NOT_EXECUTABLE);
delete code_range;
// Without CodeRange.
code_range = NULL;
VerifyMemoryChunk(isolate,
heap,
code_range,
reserve_area_size,
initial_commit_area_size,
second_commit_area_size,
EXECUTABLE);
VerifyMemoryChunk(isolate,
heap,
code_range,
reserve_area_size,
initial_commit_area_size,
second_commit_area_size,
NOT_EXECUTABLE);
}
}
TEST(MemoryAllocator) {
Isolate* isolate = CcTest::i_isolate();
Heap* heap = isolate->heap();
MemoryAllocator* memory_allocator = new MemoryAllocator(isolate);
CHECK(memory_allocator->SetUp(heap->MaxReserved(),
heap->MaxExecutableSize()));
int total_pages = 0;
OldSpace faked_space(heap,
heap->MaxReserved(),
OLD_POINTER_SPACE,
NOT_EXECUTABLE);
Page* first_page = memory_allocator->AllocatePage(
faked_space.AreaSize(), &faked_space, NOT_EXECUTABLE);
first_page->InsertAfter(faked_space.anchor()->prev_page());
CHECK(first_page->is_valid());
CHECK(first_page->next_page() == faked_space.anchor());
total_pages++;
for (Page* p = first_page; p != faked_space.anchor(); p = p->next_page()) {
CHECK(p->owner() == &faked_space);
}
// Again, we should get n or n - 1 pages.
Page* other = memory_allocator->AllocatePage(
faked_space.AreaSize(), &faked_space, NOT_EXECUTABLE);
CHECK(other->is_valid());
total_pages++;
other->InsertAfter(first_page);
int page_count = 0;
for (Page* p = first_page; p != faked_space.anchor(); p = p->next_page()) {
CHECK(p->owner() == &faked_space);
page_count++;
}
CHECK(total_pages == page_count);
Page* second_page = first_page->next_page();
CHECK(second_page->is_valid());
memory_allocator->Free(first_page);
memory_allocator->Free(second_page);
memory_allocator->TearDown();
delete memory_allocator;
}
TEST(NewSpace) {
Isolate* isolate = CcTest::i_isolate();
Heap* heap = isolate->heap();
MemoryAllocator* memory_allocator = new MemoryAllocator(isolate);
CHECK(memory_allocator->SetUp(heap->MaxReserved(),
heap->MaxExecutableSize()));
TestMemoryAllocatorScope test_scope(isolate, memory_allocator);
NewSpace new_space(heap);
CHECK(new_space.SetUp(CcTest::heap()->ReservedSemiSpaceSize(),
CcTest::heap()->ReservedSemiSpaceSize()));
CHECK(new_space.HasBeenSetUp());
while (new_space.Available() >= Page::kMaxRegularHeapObjectSize) {
Object* obj = new_space.AllocateRaw(
Page::kMaxRegularHeapObjectSize).ToObjectChecked();
CHECK(new_space.Contains(HeapObject::cast(obj)));
}
new_space.TearDown();
memory_allocator->TearDown();
delete memory_allocator;
}
TEST(OldSpace) {
Isolate* isolate = CcTest::i_isolate();
Heap* heap = isolate->heap();
MemoryAllocator* memory_allocator = new MemoryAllocator(isolate);
CHECK(memory_allocator->SetUp(heap->MaxReserved(),
heap->MaxExecutableSize()));
TestMemoryAllocatorScope test_scope(isolate, memory_allocator);
OldSpace* s = new OldSpace(heap,
heap->MaxOldGenerationSize(),
OLD_POINTER_SPACE,
NOT_EXECUTABLE);
CHECK(s != NULL);
CHECK(s->SetUp());
while (s->Available() > 0) {
s->AllocateRaw(Page::kMaxRegularHeapObjectSize).ToObjectChecked();
}
s->TearDown();
delete s;
memory_allocator->TearDown();
delete memory_allocator;
}
TEST(LargeObjectSpace) {
v8::V8::Initialize();
LargeObjectSpace* lo = CcTest::heap()->lo_space();
CHECK(lo != NULL);
int lo_size = Page::kPageSize;
Object* obj = lo->AllocateRaw(lo_size, NOT_EXECUTABLE).ToObjectChecked();
CHECK(obj->IsHeapObject());
HeapObject* ho = HeapObject::cast(obj);
CHECK(lo->Contains(HeapObject::cast(obj)));
CHECK(lo->FindObject(ho->address()) == obj);
CHECK(lo->Contains(ho));
while (true) {
intptr_t available = lo->Available();
{ AllocationResult allocation = lo->AllocateRaw(lo_size, NOT_EXECUTABLE);
if (allocation.IsRetry()) break;
}
CHECK(lo->Available() < available);
}
CHECK(!lo->IsEmpty());
CHECK(lo->AllocateRaw(lo_size, NOT_EXECUTABLE).IsRetry());
}
TEST(SizeOfFirstPageIsLargeEnough) {
if (i::FLAG_always_opt) return;
// Bootstrapping without a snapshot causes more allocations.
if (!i::Snapshot::HaveASnapshotToStartFrom()) return;
CcTest::InitializeVM();
Isolate* isolate = CcTest::i_isolate();
// Freshly initialized VM gets by with one page per space.
for (int i = FIRST_PAGED_SPACE; i <= LAST_PAGED_SPACE; i++) {
// Debug code can be very large, so skip CODE_SPACE if we are generating it.
if (i == CODE_SPACE && i::FLAG_debug_code) continue;
CHECK_EQ(1, isolate->heap()->paged_space(i)->CountTotalPages());
}
// Executing the empty script gets by with one page per space.
HandleScope scope(isolate);
CompileRun("/*empty*/");
for (int i = FIRST_PAGED_SPACE; i <= LAST_PAGED_SPACE; i++) {
// Debug code can be very large, so skip CODE_SPACE if we are generating it.
if (i == CODE_SPACE && i::FLAG_debug_code) continue;
CHECK_EQ(1, isolate->heap()->paged_space(i)->CountTotalPages());
}
// No large objects required to perform the above steps.
CHECK(isolate->heap()->lo_space()->IsEmpty());
}