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-rw-r--r--test/syscalls/linux/memory_accounting.cc99
1 files changed, 0 insertions, 99 deletions
diff --git a/test/syscalls/linux/memory_accounting.cc b/test/syscalls/linux/memory_accounting.cc
deleted file mode 100644
index a6e20f9c3..000000000
--- a/test/syscalls/linux/memory_accounting.cc
+++ /dev/null
@@ -1,99 +0,0 @@
-// Copyright 2018 The gVisor Authors.
-//
-// 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 <sys/mman.h>
-#include <map>
-
-#include "gtest/gtest.h"
-#include "gtest/gtest.h"
-#include "absl/strings/match.h"
-#include "absl/strings/numbers.h"
-#include "absl/strings/str_format.h"
-#include "absl/strings/str_split.h"
-#include "test/util/fs_util.h"
-#include "test/util/posix_error.h"
-#include "test/util/test_util.h"
-
-namespace gvisor {
-namespace testing {
-namespace {
-
-using ::absl::StrFormat;
-
-// AnonUsageFromMeminfo scrapes the current anonymous memory usage from
-// /proc/meminfo and returns it in bytes.
-PosixErrorOr<uint64_t> AnonUsageFromMeminfo() {
- ASSIGN_OR_RETURN_ERRNO(auto meminfo, GetContents("/proc/meminfo"));
- std::vector<std::string> lines(absl::StrSplit(meminfo, '\n'));
-
- // Try to find AnonPages line, the format is AnonPages:\\s+(\\d+) kB\n.
- for (const auto& line : lines) {
- if (!absl::StartsWith(line, "AnonPages:")) {
- continue;
- }
-
- std::vector<std::string> parts(
- absl::StrSplit(line, ' ', absl::SkipEmpty()));
- if (parts.size() == 3) {
- // The size is the second field, let's try to parse it as a number.
- ASSIGN_OR_RETURN_ERRNO(auto anon_kb, Atoi<uint64_t>(parts[1]));
- return anon_kb * 1024;
- }
-
- return PosixError(EINVAL, "AnonPages field in /proc/meminfo was malformed");
- }
-
- return PosixError(EINVAL, "AnonPages field not found in /proc/meminfo");
-}
-
-TEST(MemoryAccounting, AnonAccountingPreservedOnSaveRestore) {
- // This test isn't meaningful on Linux. /proc/meminfo reports system-wide
- // memory usage, which can change arbitrarily in Linux from other activity on
- // the machine. In gvisor, this test is the only thing running on the
- // "machine", so values in /proc/meminfo accurately reflect the memory used by
- // the test.
- SKIP_IF(!IsRunningOnGvisor());
-
- uint64_t anon_initial = ASSERT_NO_ERRNO_AND_VALUE(AnonUsageFromMeminfo());
-
- // Cause some anonymous memory usage.
- uint64_t map_bytes = Megabytes(512);
- char* mem =
- static_cast<char*>(mmap(nullptr, map_bytes, PROT_READ | PROT_WRITE,
- MAP_POPULATE | MAP_ANON | MAP_PRIVATE, -1, 0));
- ASSERT_NE(mem, MAP_FAILED)
- << "Map failed, errno: " << errno << " (" << strerror(errno) << ").";
-
- // Write something to each page to prevent them from being decommited on
- // S/R. Zero pages are dropped on save.
- for (uint64_t i = 0; i < map_bytes; i += kPageSize) {
- mem[i] = 'a';
- }
-
- uint64_t anon_after_alloc = ASSERT_NO_ERRNO_AND_VALUE(AnonUsageFromMeminfo());
- EXPECT_THAT(anon_after_alloc,
- EquivalentWithin(anon_initial + map_bytes, 0.03));
-
- // We have many implicit S/R cycles from scraping /proc/meminfo throughout the
- // test, but throw an explicit S/R in here as well.
- MaybeSave();
-
- // Usage should remain the same across S/R.
- uint64_t anon_after_sr = ASSERT_NO_ERRNO_AND_VALUE(AnonUsageFromMeminfo());
- EXPECT_THAT(anon_after_sr, EquivalentWithin(anon_after_alloc, 0.03));
-}
-
-} // namespace
-} // namespace testing
-} // namespace gvisor