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From d0a76539835d11c0f4723499f8be4bc9c7724eb9 Mon Sep 17 00:00:00 2001
From: Rajesh Sahoo <rajesh.sahoo@lge.com>
Date: Tue, 11 Jun 2019 15:13:04 +0530
Subject: [PATCH] avoid pthread_join if backgroundLoop is FALSE
client_thread is created depending upon backgroundLoop, but joining
without checking for same condition. so we are trying to join a garbage
thread_id.
---
libvncserver/main.c | 2 ++
1 file changed, 2 insertions(+)
diff --git a/libvncserver/main.c b/libvncserver/main.c
index d3cd9b1e..772fb18f 100644
--- a/libvncserver/main.c
+++ b/libvncserver/main.c
@@ -1112,6 +1112,7 @@ void rfbShutdownServer(rfbScreenInfoPtr screen,rfbBool disconnectClients) {
}
#ifdef LIBVNCSERVER_HAVE_LIBPTHREAD
+ if(currentCl->screen->backgroundLoop) {
/*
Notify the thread. This simply writes a NULL byte to the notify pipe in order to get past the select()
in clientInput(), the loop in there will then break because the rfbCloseClient() above has set
@@ -1120,6 +1121,7 @@ void rfbShutdownServer(rfbScreenInfoPtr screen,rfbBool disconnectClients) {
write(currentCl->pipe_notify_client_thread[1], "\x00", 1);
/* And wait for it to finish. */
pthread_join(currentCl->client_thread, NULL);
+ }
#else
rfbClientConnectionGone(currentCl);
#endif
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