paged_memory_unittest.cc | Explore in Territory

/*
 * Copyright (C) 2017 The Android Open Source Project
 *
 * Licensed under the Apache License, Version 2.0 (the "License");
 * you may not use this file except in compliance with the License.
 * You may obtain a copy of the License at
 *
 *      http://www.apache.org/licenses/LICENSE-2.0
 *
 * Unless required by applicable law or agreed to in writing, software
 * distributed under the License is distributed on an "AS IS" BASIS,
 * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
 * See the License for the specific language governing permissions and
 * limitations under the License.
 */

#include "perfetto/ext/base/paged_memory.h"

#include <stdint.h>

#include "perfetto/base/build_config.h"
#include "perfetto/ext/base/utils.h"
#include "src/base/test/vm_test_utils.h"
#include "test/gtest_and_gmock.h"

#if !PERFETTO_BUILDFLAG(PERFETTO_OS_APPLE) && \
    !PERFETTO_BUILDFLAG(PERFETTO_OS_WIN) &&   \
    !PERFETTO_BUILDFLAG(PERFETTO_OS_FUCHSIA)
#include <sys/resource.h>
#endif

namespace perfetto {
namespace base {
namespace {

TEST(PagedMemoryTest, Basic) { … }

TEST(PagedMemoryTest, SubPageGranularity) { … }

TEST(PagedMemoryTest, Uncommitted) { … }

#if defined(ADDRESS_SANITIZER)
TEST(PagedMemoryTest, AccessUncommittedMemoryTriggersASAN) {
  EXPECT_DEATH_IF_SUPPORTED(
      {
        const size_t kNumPages = 2000;
        const size_t kSize = GetSysPageSize() * kNumPages;
        PagedMemory mem =
            PagedMemory::Allocate(kSize, PagedMemory::kDontCommit);
        ASSERT_TRUE(mem.IsValid());
        char* ptr_raw = reinterpret_cast<char*>(mem.Get());
        // Only the first 1024 pages are mapped.
        const size_t kMappedSize = GetSysPageSize() * 1024;
        ptr_raw[kMappedSize] = 'x';
        abort();
      },
      "AddressSanitizer: .*");
}
#endif  // ADDRESS_SANITIZER

TEST(PagedMemoryTest, GuardRegions) { … }

// Disable this on:
// MacOS: because it doesn't seem to have an equivalent rlimit to bound mmap().
// Fuchsia: doesn't support rlimit.
// Sanitizers: they seem to try to shadow mmaped memory and fail due to OOMs.
#if !PERFETTO_BUILDFLAG(PERFETTO_OS_APPLE) &&                                  \
    !PERFETTO_BUILDFLAG(PERFETTO_OS_WIN) &&                                    \
    !PERFETTO_BUILDFLAG(PERFETTO_OS_FUCHSIA) && !defined(ADDRESS_SANITIZER) && \
    !defined(LEAK_SANITIZER) && !defined(THREAD_SANITIZER) &&                  \
    !defined(MEMORY_SANITIZER)
// Glibc headers hit this on RLIMIT_ macros.
#pragma GCC diagnostic push
#if defined(__clang__)
#pragma GCC diagnostic ignored "-Wdisabled-macro-expansion"
#endif
TEST(PagedMemoryTest, Unchecked) { … }
#pragma GCC diagnostic pop
#endif

}  // namespace
}  // namespace base
}  // namespace perfetto
chromium/third_party/perfetto/src/base/paged_memory_unittest.cc
