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4688351623
This supports the “double handler” or “double handler with low probability” models from https://crashpad.chromium.org/bug/143. For crashpad_handler to be become its own client, it needs access to its own executable path to pass to CrashpadClient::StartHandler(). This was formerly available in the test-only test::Paths::Executable(). Bring that function’s implementation to the non-test Paths::Executable() in util/misc, and rename test::Paths to test::TestPaths to avoid future confusion. test::TestPaths must still be used to access TestDataRoot(), which does not make any sense to non-test code. test::TestPaths::Executable() is retained for use by tests, which most likely prefer the fatal semantics of that function. Paths::Executable() is not fatal because for the purposes of implementing the double handler, a failure to locate the executable path (which may happen on some systems in deeply-nested directory hierarchies) shouldn’t cause the initial crashpad_handler to abort, even if it does prevent a second crashpad_handler from being started. Bug: crashpad:143 Test: crashpad_util_test Paths.*, crashpad_test_test TestPaths.* Change-Id: I9f75bf61839ce51e33c9f7c0d7031cebead6a156 Reviewed-on: https://chromium-review.googlesource.com/466346 Reviewed-by: Scott Graham <scottmg@chromium.org> Commit-Queue: Mark Mentovai <mark@chromium.org>
69 lines
2.1 KiB
C++
69 lines
2.1 KiB
C++
// Copyright 2014 The Crashpad Authors. All rights reserved.
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//
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// Licensed under the Apache License, Version 2.0 (the "License");
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// you may not use this file except in compliance with the License.
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// You may obtain a copy of the License at
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//
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// http://www.apache.org/licenses/LICENSE-2.0
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//
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// Unless required by applicable law or agreed to in writing, software
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// distributed under the License is distributed on an "AS IS" BASIS,
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// WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
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// See the License for the specific language governing permissions and
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// limitations under the License.
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#include "test/multiprocess_exec.h"
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#include "base/macros.h"
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#include "base/strings/utf_string_conversions.h"
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#include "build/build_config.h"
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#include "gtest/gtest.h"
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#include "test/test_paths.h"
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#include "util/file/file_io.h"
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namespace crashpad {
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namespace test {
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namespace {
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class TestMultiprocessExec final : public MultiprocessExec {
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public:
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TestMultiprocessExec() : MultiprocessExec() {}
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~TestMultiprocessExec() {}
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private:
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void MultiprocessParent() override {
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// Use Logging*File() instead of Checked*File() so that the test can fail
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// gracefully with a gtest assertion if the child does not execute properly.
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char c = 'z';
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ASSERT_TRUE(LoggingWriteFile(WritePipeHandle(), &c, 1));
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ASSERT_TRUE(LoggingReadFileExactly(ReadPipeHandle(), &c, 1));
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EXPECT_EQ('Z', c);
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}
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DISALLOW_COPY_AND_ASSIGN(TestMultiprocessExec);
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};
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TEST(MultiprocessExec, MultiprocessExec) {
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TestMultiprocessExec multiprocess_exec;
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base::FilePath test_executable = TestPaths::Executable();
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#if defined(OS_POSIX)
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std::string child_test_executable = test_executable.value();
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#elif defined(OS_WIN)
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std::string child_test_executable =
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base::UTF16ToUTF8(test_executable.RemoveFinalExtension().value());
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#endif // OS_POSIX
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child_test_executable += "_multiprocess_exec_test_child";
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#if defined(OS_WIN)
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child_test_executable += ".exe";
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#endif
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multiprocess_exec.SetChildCommand(child_test_executable, nullptr);
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multiprocess_exec.Run();
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}
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} // namespace
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} // namespace test
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} // namespace crashpad
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