Make all public functions do nothing on an error connection.

[free-sw/xcb/libxcb] / src / xcb_out.c

diff --git a/src/xcb_out.c b/src/xcb_out.c
index 56e02f7..91f7ea1 100644 (file)
--- a/src/xcb_out.c
+++ b/src/xcb_out.c
@@ -59,6 +59,8 @@ static int write_block(XCBConnection *c, struct iovec *vector, int count)
 
 CARD32 XCBGetMaximumRequestLength(XCBConnection *c)
 {
+    if(c->has_error)
+        return 0;
     pthread_mutex_lock(&c->out.reqlenlock);
     if(!c->out.maximum_request_length)
     {
@@ -91,6 +93,9 @@ unsigned int XCBSendRequest(XCBConnection *c, int flags, struct iovec *vector, c
     int veclen = req->count;
     enum workarounds workaround = WORKAROUND_NONE;
 
+    if(c->has_error)
+        return 0;
+
     assert(c != 0);
     assert(vector != 0);
     assert(req->count > 0);
@@ -200,6 +205,8 @@ unsigned int XCBSendRequest(XCBConnection *c, int flags, struct iovec *vector, c
 int XCBFlush(XCBConnection *c)
 {
     int ret;
+    if(c->has_error)
+        return 0;
     pthread_mutex_lock(&c->iolock);
     ret = _xcb_out_flush_to(c, c->out.request);
     pthread_mutex_unlock(&c->iolock);