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58 lines
1.9 KiB
C++
58 lines
1.9 KiB
C++
// Copyright (c) 2008 The Chromium Authors. All rights reserved.
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// Use of this source code is governed by a BSD-style license that can be
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// found in the LICENSE file.
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#ifndef TESTING_MULTIPROCESS_FUNC_LIST_H_
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#define TESTING_MULTIPROCESS_FUNC_LIST_H_
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#include <string>
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// This file provides the plumbing to register functions to be executed
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// as the main function of a child process in a multi-process test.
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// This complements the MultiProcessTest class which provides facilities
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// for launching such tests.
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//
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// The MULTIPROCESS_TEST_MAIN() macro registers a string -> func_ptr mapping
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// by creating a new global instance of the AppendMultiProcessTest() class
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// this means that by the time that we reach our main() function the mapping
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// is already in place.
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//
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// Example usage:
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// MULTIPROCESS_TEST_MAIN(a_test_func) {
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// // Code here runs in a child process.
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// return 0;
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// }
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//
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// The prototype of a_test_func is implicitly
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// int test_main_func_name();
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namespace multi_process_function_list {
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// Type for child process main functions.
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typedef int (*ChildFunctionPtr)();
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// Helper class to append a test function to the global mapping.
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// Used by the MULTIPROCESS_TEST_MAIN macro.
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class AppendMultiProcessTest {
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public:
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AppendMultiProcessTest(std::string test_name, ChildFunctionPtr func_ptr);
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};
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// Invoke the main function of a test previously registered with
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// MULTIPROCESS_TEST_MAIN()
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int InvokeChildProcessTest(std::string test_name);
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// This macro creates a global MultiProcessTest::AppendMultiProcessTest object
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// whose constructor does the work of adding the global mapping.
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#define MULTIPROCESS_TEST_MAIN(test_main) \
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int test_main(); \
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namespace { \
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multi_process_function_list::AppendMultiProcessTest \
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AddMultiProcessTest##_##test_main(#test_main, (test_main)); \
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} \
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int test_main()
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} // namespace multi_process_function_list
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#endif // TESTING_MULTIPROCESS_FUNC_LIST_H_
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