crashpad/util/test/multiprocess_exec.h
Scott Graham 892c29e8ba Reorganize Multiprocess and implement for Windows
- Various "FD" to "Handle"
- Existing Multiprocess implementation moves to _posix.
- Stub implementation for _win.

At the moment, multiprocess_exec_win.cc contains implementations of both
Multiprocess methods and MultiprocessExec functions. This will need more
work in the future, but reflects the idea that all tests should be in
terms of MultiprocessExec eventually.

Currently, this works sufficiently to have util_test succeed (including
multiprocess_exec_test, and the recently ported HTTPTransport tests.)

R=mark@chromium.org
BUG=crashpad:1, crashpad:7

Review URL: https://codereview.chromium.org/880763002
2015-01-28 14:49:42 -08:00

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// Copyright 2014 The Crashpad Authors. All rights reserved.
//
// 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.
#ifndef CRASHPAD_UTIL_TEST_MULTIPROCESS_EXEC_H_
#define CRASHPAD_UTIL_TEST_MULTIPROCESS_EXEC_H_
#include <string>
#include <vector>
#include "base/basictypes.h"
#include "build/build_config.h"
#include "util/test/multiprocess.h"
namespace crashpad {
namespace test {
//! \brief Manages an `exec()`-based multiprocess test.
//!
//! These tests are based on `fork()` and `exec()`. The parent process is able
//! to communicate with the child in the same manner as a base-class
//! Multiprocess parent. The read and write pipes appear in the child process on
//! stdin and stdout, respectively.
//!
//! Subclasses are expected to implement the parent in the same was as a
//! base-class Multiprocess parent. The child must be implemented in an
//! executable to be set by SetChildCommand().
class MultiprocessExec : public Multiprocess {
public:
MultiprocessExec();
//! \brief Sets the command to `exec()` in the child.
//!
//! This method must be called before the test can be Run().
//!
//! \param[in] command The executables pathname.
//! \param[in] arguments The command-line arguments to pass to the child
//! process in its `argv[]` vector. This vector must begin at `argv[1]`,
//! as \a command is implicitly used as `argv[0]`. This argument may be
//! `nullptr` if no command-line arguments are to be passed.
void SetChildCommand(const std::string& command,
const std::vector<std::string>* arguments);
protected:
~MultiprocessExec();
// Multiprocess:
void PreFork() override;
private:
// Multiprocess:
void MultiprocessChild() override;
std::string command_;
std::vector<std::string> arguments_;
#if defined(OS_POSIX)
std::vector<const char*> argv_;
#elif defined(OS_WIN)
std::wstring command_line_;
#endif // OS_POSIX
DISALLOW_COPY_AND_ASSIGN(MultiprocessExec);
};
} // namespace test
} // namespace crashpad
#endif // CRASHPAD_UTIL_TEST_MULTIPROCESS_EXEC_H_