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f68115aba3
We need to call waitpid until no more waitable children are available. This is necessary because SIGCHLD signals may coalesce into one when multiple children terminate almost simultaneously. Also, switch to EventLoop's asynchronous signal handling mechanism, which allows more complex operations in the signal handler.
57 lines
2.1 KiB
C++
57 lines
2.1 KiB
C++
/*
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* Copyright (c) 2018-2020, Andreas Kling <kling@serenityos.org>
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* All rights reserved.
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*
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* Redistribution and use in source and binary forms, with or without
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* modification, are permitted provided that the following conditions are met:
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*
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* 1. Redistributions of source code must retain the above copyright notice, this
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* list of conditions and the following disclaimer.
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*
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* 2. Redistributions in binary form must reproduce the above copyright notice,
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* this list of conditions and the following disclaimer in the documentation
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* and/or other materials provided with the distribution.
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*
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* THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS "AS IS"
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* AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
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* IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE
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* DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT HOLDER OR CONTRIBUTORS BE LIABLE
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* FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
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* DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR
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* SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER
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* CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY,
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* OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE
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* OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
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*/
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#include "TaskbarWindow.h"
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#include <LibCore/EventLoop.h>
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#include <LibGUI/Application.h>
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#include <signal.h>
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#include <stdio.h>
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#include <sys/wait.h>
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int main(int argc, char** argv)
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{
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if (pledge("stdio shared_buffer accept proc exec rpath unix cpath fattr sigaction", nullptr) < 0) {
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perror("pledge");
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return 1;
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}
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auto app = GUI::Application::construct(argc, argv);
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app->event_loop().register_signal(SIGCHLD, [](int) {
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// Wait all available children
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while (waitpid(-1, nullptr, WNOHANG) > 0)
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;
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});
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if (pledge("stdio shared_buffer accept proc exec rpath", nullptr) < 0) {
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perror("pledge");
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return 1;
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}
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TaskbarWindow window;
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window.show();
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return app->exec();
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}
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