Fix crash on app list start page contents not existing.
[chromium-blink-merge.git] / third_party / instrumented_libraries / patches / libxcb1.precise.diff
blobaeb486ebf6a99aebf6ac8f0624af3d8808675eec
1 diff -rupN ./src/xcb_conn.c ../libxcb-1.8.1-patched/src/xcb_conn.c
2 --- ./src/xcb_conn.c 2012-01-11 21:05:41.000000000 +0400
3 +++ ../libxcb-1.8.1-patched/src/xcb_conn.c 2014-12-10 23:37:44.432834622 +0300
4 @@ -418,10 +418,20 @@ int _xcb_conn_wait(xcb_connection_t *c,
6 if(ret)
8 + /* The code allows two threads to call select()/poll() at the same time.
9 + * First thread just wants to read, a second thread wants to write, too.
10 + * We have to make sure that we don't steal the reading thread's reply
11 + * and let it get stuck in select()/poll().
12 + * So a thread may read if either:
13 + * - There is no other thread that wants to read (the above situation
14 + * did not occur).
15 + * - It is the reading thread (above situation occurred).
16 + */
17 + int may_read = c->in.reading == 1 || !count;
18 #if USE_POLL
19 - if((fd.revents & POLLIN) == POLLIN)
20 + if(may_read && (fd.revents & POLLIN) == POLLIN)
21 #else
22 - if(FD_ISSET(c->fd, &rfds))
23 + if(may_read && FD_ISSET(c->fd, &rfds))
24 #endif
25 ret = ret && _xcb_in_read(c);