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MINOR: mworker: write parent pid in the pidfile

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The first pid in the pidfile is now the parent, it's more convenient for
supervising the processus.

You can now reload haproxy in master-worker mode with convenient command
like: kill -USR2 $(head -1 /tmp/haproxy.pid)
This commit is contained in:
William Lallemand 2017-11-06 11:00:04 +01:00 committed by Willy Tarreau
parent 8029300df6
commit deed780a22
1 changed files with 7 additions and 0 deletions
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7
src/haproxy.c
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@ -2631,6 +2631,13 @@ int main(int argc, char **argv)
}
}
/* if in master-worker mode, write the PID of the father */
if (global.mode & MODE_MWORKER) {
char pidstr[100];
snprintf(pidstr, sizeof(pidstr), "%d\n", getpid());
shut_your_big_mouth_gcc(write(pidfd, pidstr, strlen(pidstr)));
}
/* the father launches the required number of processes */
for (proc = 0; proc < global.nbproc; proc++) {
ret = fork();