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e449232f37
This change ensures that the compositor process is not able to respond to any of the noop requests sent by the client process, by using the test compositor's `stop_display` mechanism to coordinate when the compositor should stop processing messages. (Before this change, it was possible that one of the calls of wl_event_loop_dispatch in the compositor process could respond to all the client's noop requests before returning.) Signed-off-by: Manuel Stoeckl <code@mstoeckl.com>
114 lines
3.5 KiB
C
114 lines
3.5 KiB
C
/*
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* Copyright (c) 2014 Red Hat, Inc.
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*
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* Permission is hereby granted, free of charge, to any person obtaining
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* a copy of this software and associated documentation files (the
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* "Software"), to deal in the Software without restriction, including
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* without limitation the rights to use, copy, modify, merge, publish,
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* distribute, sublicense, and/or sell copies of the Software, and to
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* permit persons to whom the Software is furnished to do so, subject to
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* the following conditions:
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*
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* The above copyright notice and this permission notice (including the
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* next paragraph) shall be included in all copies or substantial
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* portions of the Software.
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*
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* THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND,
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* EXPRESS OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF
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* MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND
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* NONINFRINGEMENT. IN NO EVENT SHALL THE AUTHORS OR COPYRIGHT HOLDERS
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* BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN AN
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* ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN
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* CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE
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* SOFTWARE.
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*/
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#include <stdint.h>
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#include <unistd.h>
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#include "wayland-server.h"
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#include "wayland-client.h"
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/* info about a client on server side */
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struct client_info {
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struct display *display;
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struct wl_client *wl_client;
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struct wl_listener destroy_listener;
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const char *name; /* for debugging */
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int pipe;
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pid_t pid;
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int exit_code;
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struct wl_list link;
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void *data; /* for arbitrary use */
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};
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struct display {
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struct wl_display *wl_display;
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struct wl_list clients;
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uint32_t clients_no;
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uint32_t clients_terminated_no;
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/* list of clients waiting for display_resumed event */
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struct wl_list waiting_for_resume;
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uint32_t wfr_num;
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};
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/* This is a helper structure for clients.
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* Instead of calling wl_display_connect() and all the other stuff,
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* client can use client_connect and it will return this structure
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* filled. */
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struct client {
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struct wl_display *wl_display;
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struct test_compositor *tc;
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int display_stopped;
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};
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struct client *client_connect(void);
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void client_disconnect(struct client *);
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int stop_display(struct client *, int);
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void noop_request(struct client *);
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/**
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* Usual workflow:
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*
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* d = display_create();
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*
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* wl_global_create(d->wl_display, ...);
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* ... other setups ...
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*
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* client_create(d, client_main, data);
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* client_create(d, client_main2, data);
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*
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* display_run(d);
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* display_destroy(d);
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*/
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struct display *display_create(void);
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void display_destroy(struct display *d);
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void display_run(struct display *d);
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/* This function posts the display_resumed event to all waiting clients,
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* so that after flushing events the clients will stop waiting and continue.
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*
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* (Calling `display_run` after this function will resume the display loop.)
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*/
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void display_post_resume_events(struct display *d);
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/* After n clients called stop_display(..., n), the display
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* is stopped and can process the code after display_run().
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*
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* This function posts the display_resumed event to the waiting
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* clients, so that the clients will stop waiting and continue;
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* it then reruns the display. */
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void display_resume(struct display *d);
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struct client_info *client_create_with_name(struct display *d,
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void (*client_main)(void *data),
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void *data,
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const char *name);
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#define client_create(d, c, data) client_create_with_name((d), (c), data, (#c))
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#define client_create_noarg(d, c) \
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client_create_with_name((d), (void(*)(void *)) (c), NULL, (#c))
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