- API: fix Unix bug when checking if client is alive based on PID.

Can't use waitpid() here; works only for children.
    Use kill(pid, 0) instead.

api/boinc_api.cpp

@@ -395,7 +395,8 @@ static bool client_dead() {
         }
         return true;
 #else
-        return (waitpid(aid.client_pid, 0, WNOHANG) < 0);
+        int retval = kill(aid.client_pid, 0);
+        return (retval == -1 && errno == ESRCH);
 #endif
     } else {
         return (interrupt_count > heartbeat_giveup_count);

checkin_notes

@@ -7928,3 +7928,11 @@ David  27 Dec 2012
     client/
         hostinfo_unix.cpp
         hostinfo_unix_test.cpp
+
+David  27 Dec 2012
+    - API: fix Unix bug when checking if client is alive based on PID.
+        Can't use waitpid() here; works only for children.
+        Use kill(pid, 0) instead.
+
+    api/
+        boinc_api.cpp