Add ctdb_fork(0 which will fork a child process and drop the real-time

[sahlberg/ctdb.git] / server / ctdb_persistent.c

diff --git a/server/ctdb_persistent.c b/server/ctdb_persistent.c
index dc05cbfa90b0c91e005d4cfe0a6f6528e40daf80..f9a20510c989f40b1a2c432f827e97ae5443a331 100644 (file)
--- a/server/ctdb_persistent.c
+++ b/server/ctdb_persistent.c
@@ -455,7 +455,7 @@ struct childwrite_handle {
 
 static int childwrite_destructor(struct childwrite_handle *h)
 {
-       h->ctdb->statistics.pending_childwrite_calls--;
+       CTDB_DECREMENT_STAT(h->ctdb, pending_childwrite_calls);
        kill(h->child, SIGKILL);
        return 0;
 }
@@ -475,8 +475,8 @@ static void childwrite_handler(struct event_context *ev, struct fd_event *fde,
        int ret;
        char c;
 
-       ctdb_latency(h->ctdb_db, "persistent", &h->ctdb->statistics.max_childwrite_latency, h->start_time);
-       h->ctdb->statistics.pending_childwrite_calls--;
+       CTDB_UPDATE_LATENCY(h->ctdb, h->ctdb_db, "persistent", childwrite_latency, h->start_time);
+       CTDB_DECREMENT_STAT(h->ctdb, pending_childwrite_calls);
 
        /* the handle needs to go away when the context is gone - when
           the handle goes away this implicitly closes the pipe, which
@@ -508,11 +508,11 @@ struct childwrite_handle *ctdb_childwrite(struct ctdb_db_context *ctdb_db,
        int ret;
        pid_t parent = getpid();
 
-       ctdb_db->ctdb->statistics.childwrite_calls++;
-       ctdb_db->ctdb->statistics.pending_childwrite_calls++;
+       CTDB_INCREMENT_STAT(ctdb_db->ctdb, childwrite_calls);
+       CTDB_INCREMENT_STAT(ctdb_db->ctdb, pending_childwrite_calls);
 
        if (!(result = talloc_zero(state, struct childwrite_handle))) {
-               ctdb_db->ctdb->statistics.pending_childwrite_calls--;
+               CTDB_DECREMENT_STAT(ctdb_db->ctdb, pending_childwrite_calls);
                return NULL;
        }
 
@@ -520,17 +520,17 @@ struct childwrite_handle *ctdb_childwrite(struct ctdb_db_context *ctdb_db,
 
        if (ret != 0) {
                talloc_free(result);
-               ctdb_db->ctdb->statistics.pending_childwrite_calls--;
+               CTDB_DECREMENT_STAT(ctdb_db->ctdb, pending_childwrite_calls);
                return NULL;
        }
 
-       result->child = fork();
+       result->child = ctdb_fork(ctdb_db->ctdb);
 
        if (result->child == (pid_t)-1) {
                close(result->fd[0]);
                close(result->fd[1]);
                talloc_free(result);
-               ctdb_db->ctdb->statistics.pending_childwrite_calls--;
+               CTDB_DECREMENT_STAT(ctdb_db->ctdb, pending_childwrite_calls);
                return NULL;
        }
 
@@ -571,7 +571,7 @@ struct childwrite_handle *ctdb_childwrite(struct ctdb_db_context *ctdb_db,
                                   (void *)result);
        if (result->fde == NULL) {
                talloc_free(result);
-               ctdb_db->ctdb->statistics.pending_childwrite_calls--;
+               CTDB_DECREMENT_STAT(ctdb_db->ctdb, pending_childwrite_calls);
                return NULL;
        }
        tevent_fd_set_auto_close(result->fde);