$NetBSD: patch-ac,v 1.1 2001/05/14 20:21:19 skrll Exp $

--- pth_high.c.orig	Sat Mar 24 14:49:58 2001
+++ pth_high.c
@@ -141,8 +141,43 @@
     return 0;
 }
 
+#ifdef HAVE_SYS_RESOURCE_H
+/* Pth variant of wait4(2) */
+pid_t pth_wait4(pid_t wpid, int *status, int options, struct rusage *rusage)
+{
+    pth_event_t ev;
+    static pth_key_t ev_key = PTH_KEY_INIT;
+    pid_t pid;
+
+    pth_debug2("pth_wait4: called from thread \"%s\"", pth_current->name);
+
+    for (;;) {
+        /* do a non-blocking poll for the pid */
+        while (   (pid = pth_sc(wait4)(wpid, status, options|WNOHANG, rusage)) < 0 
+               && errno == EINTR) ;
+
+        /* if pid was found or caller requested a polling return immediately */
+        if (pid == -1 || pid > 0 || (pid == 0 && (options & WNOHANG)))
+            break;
+
+        /* else wait a little bit */
+        ev = pth_event(PTH_EVENT_TIME|PTH_MODE_STATIC, &ev_key, pth_timeout(0,250000));
+        pth_wait(ev);
+    }
+
+    pth_debug2("pth_wait4: leave to thread \"%s\"", pth_current->name);
+    return pid;
+}
+
 /* Pth variant of waitpid(2) */
-pid_t pth_waitpid(pid_t wpid, int *status, int options)
+pid_t pth_waitpid(pid_t wpid, int *status, int options) 
+{
+    return pth_wait4(wpid, status, options, 0);
+}
+
+#else
+/* Pth variant of wait4(2) */
+pid_t pth_waitpid(pid_t wpid, int *status, int options) 
 {
     pth_event_t ev;
     static pth_key_t ev_key = PTH_KEY_INIT;
@@ -167,6 +202,8 @@
     pth_debug2("pth_waitpid: leave to thread \"%s\"", pth_current->name);
     return pid;
 }
+#endif
+
 
 /* Pth variant of system(3) */
 int pth_system(const char *cmd)