Thread-lock the code for writing JSON to clients...

...which means it can be called safely from both the main and PPS-handling
threads.

All regression testts pass.

1 files changed, 7 insertions, 0 deletions

diff --git a/gpsd.c b/gpsd.c
index e6ce089a..d086d23d 100644
--- a/gpsd.c
+++ b/gpsd.c
@@ -601,7 +601,14 @@ static ssize_t throttled_write(struct subscriber_t *sub, char *buf,
 	}
     }
 
+#if defined(PPS_ENABLE)
+    gpsd_acquire_reporting_lock();
+#endif /* PPS_ENABLE */
     status = send(sub->fd, buf, len, 0);
+#if defined(PPS_ENABLE)
+    gpsd_release_reporting_lock();
+
+#endif /* PPS_ENABLE */
     if (status == (ssize_t) len)
 	return status;
     else if (status > -1) {