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Copyright (c) 2009 Niels Martin Hansen
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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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* Redistributions of source code must retain the above copyright notice,
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this list of conditions and the following disclaimer.
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* 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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* Neither the name of the Aegisub Group nor the names of its contributors
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may be used to endorse or promote products derived from this software
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without specific prior written permission.
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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
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ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT OWNER OR CONTRIBUTORS BE
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LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR
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CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF
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SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS
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INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN
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CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE)
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ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE
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POSSIBILITY OF SUCH DAMAGE.
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#include <sys/types.h>
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#include <sys/event.h>
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3: Timed out waiting for parent to exit
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If none of those happen the requested command is execve()'d.
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int main(int argc, char *argv[], char *env[]) {
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perror("Error in: kqueue()");
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struct kevent event[1];
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EV_ADD|EV_ENABLE|EV_ONESHOT,
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printf("restart-helper: waiting for pid %d\n", getppid());
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struct kevent change[1];
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struct timespec timeout = { 30, 0 };
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int nchange = kevent(queue, change, 1, event, 1, &timeout);
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perror("restart-helper: Error in kevent()");
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printf("restart-helper: Timed out waiting for pid %d\n", getppid());
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if (change[0].flags & EV_ERROR) {
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perror("restart-helper: Error in event");
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printf("restart-helper: Executing '%s'\n", argv[1]);
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[NSTask launchedTaskWithLaunchPath:[NSString stringWithUTF8String:argv[1]] arguments:@[]];
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@catch (NSException *e) {
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printf("restart-helper: Error launching program: %s\n", e.description.UTF8String);