diff options
Diffstat (limited to 'waitlib/testwait.c')
| -rw-r--r-- | waitlib/testwait.c | 16 |
1 files changed, 13 insertions, 3 deletions
diff --git a/waitlib/testwait.c b/waitlib/testwait.c index fb0fe48..6020c36 100644 --- a/waitlib/testwait.c +++ b/waitlib/testwait.c @@ -1,5 +1,5 @@ /* -** Copyright 1998 - 2006 Double Precision, Inc. +** Copyright 1998 - 2020 Double Precision, Inc. ** See COPYING for distribution information. */ @@ -10,17 +10,24 @@ #include <stdio.h> #include <stdlib.h> #include <signal.h> +#include <pthread.h> /* Stress test waitlib.c */ #define NUMCHILDREN 100 /* Start 100 child processes */ #define INITCHILDREN 10 /* Start with these many child procs */ +pthread_mutex_t mutex = PTHREAD_MUTEX_INITIALIZER; +pthread_cond_t cond = PTHREAD_COND_INITIALIZER; + static unsigned started, finished; static void reap_child(pid_t p, int dummy) { + pthread_mutex_lock(&mutex); ++finished; + pthread_cond_signal(&cond); + pthread_mutex_unlock(&mutex); } static RETSIGTYPE sighandler(int sig) @@ -87,13 +94,16 @@ char c; ; /* Shut gcc up */ close(pipefd[1]); close(pipefd2[0]); - while (started < NUMCHILDREN) if (start_child() == 0) _exit(0); alarm(30); + pthread_mutex_lock(&mutex); while (finished < started) - foobar(); + { + pthread_cond_wait(&cond, &mutex); + } + pthread_mutex_unlock(&mutex); exit(0); } |