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// Copyright 2014 the V8 project authors. All rights reserved.
// Use of this source code is governed by a BSD-style license that can be
// found in the LICENSE file.
#ifdef __linux__
#include <sys/mman.h>
#undef MAP_TYPE
#endif // __linux__
#include "src/heap/heap-inl.h"
#include "src/heap/spaces-inl.h"
#include "src/isolate.h"
#include "test/unittests/test-utils.h"
#include "testing/gtest/include/gtest/gtest.h"
namespace v8 {
namespace internal {
class SequentialUnmapperTest : public TestWithIsolate {
public:
SequentialUnmapperTest() = default;
~SequentialUnmapperTest() override = default;
static void SetUpTestCase() {
old_flag_ = i::FLAG_concurrent_sweeping;
i::FLAG_concurrent_sweeping = false;
TestWithIsolate::SetUpTestCase();
}
static void TearDownTestCase() {
TestWithIsolate::TearDownTestCase();
i::FLAG_concurrent_sweeping = old_flag_;
}
Heap* heap() { return isolate()->heap(); }
MemoryAllocator* allocator() { return heap()->memory_allocator(); }
MemoryAllocator::Unmapper* unmapper() { return allocator()->unmapper(); }
private:
static bool old_flag_;
DISALLOW_COPY_AND_ASSIGN(SequentialUnmapperTest);
};
bool SequentialUnmapperTest::old_flag_;
#ifdef __linux__
// See v8:5945.
TEST_F(SequentialUnmapperTest, UnmapOnTeardownAfterAlreadyFreeingPooled) {
Page* page =
allocator()->AllocatePage(MemoryAllocator::PageAreaSize(OLD_SPACE),
static_cast<PagedSpace*>(heap()->old_space()),
Executability::NOT_EXECUTABLE);
EXPECT_NE(nullptr, page);
const int page_size = getpagesize();
void* start_address = reinterpret_cast<void*>(page->address());
EXPECT_EQ(0, msync(start_address, page_size, MS_SYNC));
allocator()->Free<MemoryAllocator::kPooledAndQueue>(page);
EXPECT_EQ(0, msync(start_address, page_size, MS_SYNC));
unmapper()->FreeQueuedChunks();
EXPECT_EQ(0, msync(start_address, page_size, MS_SYNC));
unmapper()->TearDown();
EXPECT_EQ(-1, msync(start_address, page_size, MS_SYNC));
}
// See v8:5945.
TEST_F(SequentialUnmapperTest, UnmapOnTeardown) {
Page* page =
allocator()->AllocatePage(MemoryAllocator::PageAreaSize(OLD_SPACE),
static_cast<PagedSpace*>(heap()->old_space()),
Executability::NOT_EXECUTABLE);
EXPECT_NE(nullptr, page);
const int page_size = getpagesize();
void* start_address = reinterpret_cast<void*>(page->address());
EXPECT_EQ(0, msync(start_address, page_size, MS_SYNC));
allocator()->Free<MemoryAllocator::kPooledAndQueue>(page);
EXPECT_EQ(0, msync(start_address, page_size, MS_SYNC));
unmapper()->TearDown();
EXPECT_EQ(-1, msync(start_address, page_size, MS_SYNC));
}
#endif // __linux__
} // namespace internal
} // namespace v8
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