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Merge "Propagate signals through makeparallel"

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Colin Cross 2016-10-04 00:23:54 +00:00 committed by Gerrit Code Review
commit e0f42b41f6
1 changed files with 25 additions and 2 deletions
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27
tools/makeparallel/makeparallel.cpp
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@ -337,7 +337,29 @@ int main(int argc, char* argv[]) {
args.push_back(nullptr);
pid_t pid = fork();
static pid_t pid;
// Set up signal handlers to forward SIGHUP, SIGINT, SIGQUIT, SIGTERM, and
// SIGALRM to child
struct sigaction action = {};
action.sa_flags = SA_SIGINFO | SA_RESTART,
action.sa_sigaction = [](int signal, siginfo_t*, void*) {
if (pid > 0) {
kill(pid, signal);
}
};
int ret = 0;
if (!ret) ret = sigaction(SIGHUP, &action, NULL);
if (!ret) ret = sigaction(SIGINT, &action, NULL);
if (!ret) ret = sigaction(SIGQUIT, &action, NULL);
if (!ret) ret = sigaction(SIGTERM, &action, NULL);
if (!ret) ret = sigaction(SIGALRM, &action, NULL);
if (ret < 0) {
error(errno, errno, "sigaction failed");
}
pid = fork();
if (pid < 0) {
error(errno, errno, "fork failed");
} else if (pid == 0) {
@ -361,9 +383,10 @@ int main(int argc, char* argv[]) {
}
// parent
siginfo_t status = {};
int exit_status = 0;
int ret = waitid(P_PID, pid, &status, WEXITED);
ret = waitid(P_PID, pid, &status, WEXITED);
if (ret < 0) {
error(errno, errno, "waitpid failed");
} else if (status.si_code == CLD_EXITED) {