Attachment 67051 Details for Bug 54671 – xcb-only test case that (hopefully) reproduces this problem

xcb-only test case that (hopefully) reproduces this problem

t.c (text/x-c), 1.53 KB, created by Uli Schlachter on 2012-09-12 12:46:05 UTC

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Creator: Uli Schlachter

Created: 2012-09-12 12:46:05 UTC

Size: 1.53 KB

patch

obsolete

>#include <pthread.h>
>#include <xcb/xcb.h>
>#include <xcb/xcbext.h>
>#include <stdio.h>
>#include <unistd.h>
>#include <stdlib.h>
>#include <time.h>
>
>static xcb_connection_t *c;
>// mutex protecting seq, must be used around xcb_writev()
>static pthread_mutex_t mymutex = PTHREAD_MUTEX_INITIALIZER;
>static uint64_t seq;
>
>static void *my_thread2(void *unused)
>{
>	while (1) {
>		xcb_get_input_focus_request_t req;
>		req.pad0 = 0;
>		req.major_opcode = XCB_GET_INPUT_FOCUS;
>		req.length = sizeof(req) / 4;
>		struct iovec iovec;
>		iovec.iov_base = &req;
>		iovec.iov_len = sizeof(req);
>		pthread_mutex_lock(&mymutex);
>		xcb_writev(c, &iovec, 1, 1);
>		seq++;
>		xcb_get_input_focus_cookie_t cookie = { seq };
>		pthread_mutex_unlock(&mymutex);
>		free(xcb_get_input_focus_reply(c, cookie, NULL));
>
>		printf("x");
>		fflush(stdout);
>	}
>}
>
>static void never_called(void *unused)
>{
>	puts("Never called was called!");
>	fflush(stdout);
>}
>
>int main()
>{
>	pthread_t thread2;
>	c = xcb_connect(NULL, NULL);
>	xcb_screen_t *screen = xcb_setup_roots_iterator(xcb_get_setup(c)).data;
>	xcb_take_socket(c, never_called, NULL, 0, &seq);
>	if (pthread_create(&thread2, NULL, my_thread2, NULL))
>		puts("Error starting thread");
>
>	while (1) {
>		xcb_map_window_request_t req;
>		req.pad0 = 0;
>		req.major_opcode = XCB_MAP_WINDOW;
>		req.length = sizeof(req) / 4;
>		req.window = screen->root;
>		struct iovec iovec;
>		iovec.iov_base = &req;
>		iovec.iov_len = sizeof(req);
>		pthread_mutex_lock(&mymutex);
>		xcb_writev(c, &iovec, 1, 1);
>		seq++;
>		pthread_mutex_unlock(&mymutex);
>
>		printf("o");
>		fflush(stdout);
>	}
>}

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Attachments on bug 54671: 66895 | 66985 | 67004 | 67043 | 67048 | 67051 | 67053

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