Attachment 126789 Details for Bug 97932 – Modified presentation example to trace the wl_shell configure event

Modified presentation example to trace the wl_shell configure event

presentation-shm.c (text/x-c++src), 21.29 KB, created by Nicolas Dufresne on 2016-09-26 14:41:26 UTC

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Creator: Nicolas Dufresne

Created: 2016-09-26 14:41:26 UTC

Size: 21.29 KB

patch

obsolete

>/*
> * Copyright Â© 2011 Benjamin Franzke
> * Copyright Â© 2010 Intel Corporation
> * Copyright Â© 2014 Collabora, Ltd.
> *
> * Permission is hereby granted, free of charge, to any person obtaining a
> * copy of this software and associated documentation files (the "Software"),
> * to deal in the Software without restriction, including without limitation
> * the rights to use, copy, modify, merge, publish, distribute, sublicense,
> * and/or sell copies of the Software, and to permit persons to whom the
> * Software is furnished to do so, subject to the following conditions:
> *
> * The above copyright notice and this permission notice (including the next
> * paragraph) shall be included in all copies or substantial portions of the
> * Software.
> *
> * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
> * IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
> * FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT.  IN NO EVENT SHALL
> * THE AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
> * LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING
> * FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER
> * DEALINGS IN THE SOFTWARE.
> */
>
>#include "config.h"
>
>#include <stdint.h>
>#include <stdio.h>
>#include <stdlib.h>
>#include <string.h>
>#include <stdbool.h>
>#include <assert.h>
>#include <unistd.h>
>#include <sys/mman.h>
>#include <signal.h>
>#include <time.h>
>
>#include <wayland-client.h>
>#include "shared/helpers.h"
>#include "shared/zalloc.h"
>#include "shared/os-compatibility.h"
>#include "presentation-time-client-protocol.h"
>
>enum run_mode {
>	RUN_MODE_FEEDBACK,
>	RUN_MODE_FEEDBACK_IDLE,
>	RUN_MODE_PRESENT,
>};
>
>static const char * const run_mode_name[] = {
>	[RUN_MODE_FEEDBACK] = "feedback",
>	[RUN_MODE_FEEDBACK_IDLE] = "feedback-idle",
>	[RUN_MODE_PRESENT] = "low-lat present",
>};
>
>struct output {
>	struct wl_output *output;
>	uint32_t name;
>	struct wl_list link;
>};
>
>struct display {
>	struct wl_display *display;
>	struct wl_registry *registry;
>	struct wl_compositor *compositor;
>	struct wl_shell *shell;
>
>	struct wl_shm *shm;
>	uint32_t formats;
>
>	struct wp_presentation *presentation;
>	clockid_t clk_id;
>
>	struct wl_list output_list; /* struct output::link */
>};
>
>struct feedback {
>	struct window *window;
>	unsigned frame_no;
>	struct wp_presentation_feedback *feedback;
>	struct timespec commit;
>	struct timespec target;
>	uint32_t frame_stamp;
>	struct wl_list link;
>	struct timespec present;
>};
>
>struct buffer {
>	struct wl_buffer *buffer;
>	void *shm_data;
>	int busy;
>};
>
>struct window {
>	struct display *display;
>	int width, height;
>	enum run_mode mode;
>	struct wl_surface *surface;
>	struct wl_shell_surface *shell_surface;
>
>	struct buffer *buffers;
>	int num_buffers;
>	int next;
>	int refresh_nsec;
>	int commit_delay_msecs;
>
>	struct wl_callback *callback;
>	struct wl_list feedback_list;
>
>	struct feedback *received_feedback;
>};
>
>#define NSEC_PER_SEC 1000000000
>
>static void
>buffer_release(void *data, struct wl_buffer *buffer)
>{
>	struct buffer *mybuf = data;
>
>	mybuf->busy = 0;
>}
>
>static const struct wl_buffer_listener buffer_listener = {
>	buffer_release
>};
>
>static int
>create_shm_buffers(struct display *display, struct buffer **buffers,
>		   int num_buffers, int width, int height, uint32_t format)
>{
>	struct buffer *bufs;
>	struct wl_shm_pool *pool;
>	int fd, size, stride, offset;
>	void *data;
>	int i;
>
>	stride = width * 4;
>	size = stride * height * num_buffers;
>
>	fd = os_create_anonymous_file(size);
>	if (fd < 0) {
>		fprintf(stderr, "creating a buffer file for %d B failed: %m\n",
>			size);
>		return -1;
>	}
>
>	data = mmap(NULL, size, PROT_READ | PROT_WRITE, MAP_SHARED, fd, 0);
>	if (data == MAP_FAILED) {
>		fprintf(stderr, "mmap failed: %m\n");
>		close(fd);
>		return -1;
>	}
>
>	pool = wl_shm_create_pool(display->shm, fd, size);
>	offset = 0;
>
>	bufs = calloc(num_buffers, sizeof(*bufs));
>	assert(bufs);
>
>	for (i = 0; i < num_buffers; i++) {
>		bufs[i].buffer = wl_shm_pool_create_buffer(pool, offset,
>							   width, height,
>							   stride, format);
>		assert(bufs[i].buffer);
>		wl_buffer_add_listener(bufs[i].buffer,
>				       &buffer_listener, &bufs[i]);
>
>		bufs[i].shm_data = (char *)data + offset;
>		offset += stride * height;
>	}
>
>	wl_shm_pool_destroy(pool);
>	close(fd);
>
>	*buffers = bufs;
>
>	return 0;
>}
>
>static void
>handle_ping(void *data, struct wl_shell_surface *shell_surface,
>							uint32_t serial)
>{
>	wl_shell_surface_pong(shell_surface, serial);
>}
>
>static void
>handle_configure(void *data, struct wl_shell_surface *shell_surface,
>		 uint32_t edges, int32_t width, int32_t height)
>{
>  printf("Got configure event: edges = %x width = %i height = %i\n",
>      edges, width, height);
>}
>
>static void
>handle_popup_done(void *data, struct wl_shell_surface *shell_surface)
>{
>}
>
>static const struct wl_shell_surface_listener shell_surface_listener = {
>	handle_ping,
>	handle_configure,
>	handle_popup_done
>};
>
>static struct window *
>create_window(struct display *display, int width, int height,
>	      enum run_mode mode, int commit_delay_msecs)
>{
>	struct window *window;
>	char title[128];
>	int ret;
>
>	snprintf(title, sizeof(title),
>		 "presentation-shm: %s [Delay %i msecs]", run_mode_name[mode],
>		 commit_delay_msecs);
>
>	window = zalloc(sizeof *window);
>	if (!window)
>		return NULL;
>
>	window->commit_delay_msecs = commit_delay_msecs;
>	window->mode = mode;
>	window->callback = NULL;
>	wl_list_init(&window->feedback_list);
>	window->display = display;
>	window->width = width;
>	window->height = height;
>	window->surface = wl_compositor_create_surface(display->compositor);
>	window->shell_surface = wl_shell_get_shell_surface(display->shell,
>							   window->surface);
>
>	if (window->shell_surface)
>		wl_shell_surface_add_listener(window->shell_surface,
>					      &shell_surface_listener, window);
>
>	wl_shell_surface_set_title(window->shell_surface, title);
>
>	wl_shell_surface_set_toplevel(window->shell_surface);
>
>	window->num_buffers = 60;
>	window->refresh_nsec = NSEC_PER_SEC / 60; /* 60 Hz guess */
>	window->next = 0;
>	ret = create_shm_buffers(window->display,
>				 &window->buffers, window->num_buffers,
>				 window->width, window->height,
>				 WL_SHM_FORMAT_XRGB8888);
>	assert(ret == 0);
>
>	return window;
>}
>
>static void
>destroy_feedback(struct feedback *feedback)
>{
>	if (feedback->feedback)
>		wp_presentation_feedback_destroy(feedback->feedback);
>
>	wl_list_remove(&feedback->link);
>	free(feedback);
>}
>
>static void
>destroy_window(struct window *window)
>{
>	int i;
>
>	while (!wl_list_empty(&window->feedback_list)) {
>		struct feedback *f;
>
>		f = wl_container_of(window->feedback_list.next, f, link);
>		printf("clean up feedback %u\n", f->frame_no);
>		destroy_feedback(f);
>	}
>
>	if (window->callback)
>		wl_callback_destroy(window->callback);
>
>	wl_shell_surface_destroy(window->shell_surface);
>	wl_surface_destroy(window->surface);
>
>	for (i = 0; i < window->num_buffers; i++)
>		wl_buffer_destroy(window->buffers[i].buffer);
>	/* munmap(window->buffers[0].shm_data, size); */
>	free(window->buffers);
>
>	free(window);
>}
>
>static struct buffer *
>window_next_buffer(struct window *window)
>{
>	struct buffer *buf = &window->buffers[window->next];
>
>	window->next = (window->next + 1) % window->num_buffers;
>
>	return buf;
>}
>
>static void
>paint_pixels(void *image, int width, int height, uint32_t phase)
>{
>	const int halfh = height / 2;
>	const int halfw = width / 2;
>	uint32_t *pixel = image;
>	int y, or;
>	double ang = M_PI * 2.0 / 1000000.0 * phase;
>	double s = sin(ang);
>	double c = cos(ang);
>
>	/* squared radii thresholds */
>	or = (halfw < halfh ? halfw : halfh) - 16;
>	or *= or;
>
>	for (y = 0; y < height; y++) {
>		int x;
>		int oy = y - halfh;
>		int y2 = oy * oy;
>
>		for (x = 0; x < width; x++) {
>			int ox = x - halfw;
>			uint32_t v = 0xff000000;
>			double rx, ry;
>
>			if (ox * ox + y2 > or) {
>				if (ox * oy > 0)
>					*pixel++ = 0xff000000;
>				else
>					*pixel++ = 0xffffffff;
>				continue;
>			}
>
>			rx = c * ox + s * oy;
>			ry = -s * ox + c * oy;
>
>			if (rx < 0.0)
>				v |= 0x00ff0000;
>			if (ry < 0.0)
>				v |= 0x0000ff00;
>			if ((rx < 0.0) == (ry < 0.0))
>				v |= 0x000000ff;
>
>			*pixel++ = v;
>		}
>	}
>}
>
>static void
>feedback_sync_output(void *data,
>		     struct wp_presentation_feedback *presentation_feedback,
>		     struct wl_output *output)
>{
>	/* not interested */
>}
>
>static char *
>pflags_to_str(uint32_t flags, char *str, unsigned len)
>{
>	static const struct {
>		uint32_t flag;
>		char sym;
>	} desc[] = {
>		{ WP_PRESENTATION_FEEDBACK_KIND_VSYNC, 's' },
>		{ WP_PRESENTATION_FEEDBACK_KIND_HW_CLOCK, 'c' },
>		{ WP_PRESENTATION_FEEDBACK_KIND_HW_COMPLETION, 'e' },
>		{ WP_PRESENTATION_FEEDBACK_KIND_ZERO_COPY, 'z' },
>	};
>	unsigned i;
>
>	*str = '\0';
>	if (len < ARRAY_LENGTH(desc) + 1)
>		return str;
>
>	for (i = 0; i < ARRAY_LENGTH(desc); i++)
>		str[i] = flags & desc[i].flag ? desc[i].sym : '_';
>	str[ARRAY_LENGTH(desc)] = '\0';
>
>	return str;
>}
>
>static uint32_t
>timespec_to_ms(const struct timespec *ts)
>{
>	return (uint32_t)ts->tv_sec * 1000 + ts->tv_nsec / 1000000;
>}
>
>static void
>timespec_from_proto(struct timespec *tm, uint32_t tv_sec_hi,
>		    uint32_t tv_sec_lo, uint32_t tv_nsec)
>{
>	tm->tv_sec = ((uint64_t)tv_sec_hi << 32) + tv_sec_lo;
>	tm->tv_nsec = tv_nsec;
>}
>
>static int
>timespec_diff_to_usec(const struct timespec *a, const struct timespec *b)
>{
>	time_t secs = a->tv_sec - b->tv_sec;
>	long nsec = a->tv_nsec - b->tv_nsec;
>
>	return secs * 1000000 + nsec / 1000;
>}
>
>static void
>feedback_presented(void *data,
>		   struct wp_presentation_feedback *presentation_feedback,
>		   uint32_t tv_sec_hi,
>		   uint32_t tv_sec_lo,
>		   uint32_t tv_nsec,
>		   uint32_t refresh_nsec,
>		   uint32_t seq_hi,
>		   uint32_t seq_lo,
>		   uint32_t flags)
>{
>	struct feedback *feedback = data;
>	struct window *window = feedback->window;
>	struct feedback *prev_feedback = window->received_feedback;
>	uint64_t seq = ((uint64_t)seq_hi << 32) + seq_lo;
>	const struct timespec *prevpresent;
>	uint32_t commit, present;
>	uint32_t f2c, c2p, f2p;
>	int p2p, t2p;
>	char flagstr[10];
>
>	timespec_from_proto(&feedback->present, tv_sec_hi, tv_sec_lo, tv_nsec);
>	commit = timespec_to_ms(&feedback->commit);
>	present = timespec_to_ms(&feedback->present);
>
>	if (prev_feedback)
>		prevpresent = &prev_feedback->present;
>	else
>		prevpresent = &feedback->present;
>
>	f2c = commit - feedback->frame_stamp;
>	c2p = present - commit;
>	f2p = present - feedback->frame_stamp;
>	p2p = timespec_diff_to_usec(&feedback->present, prevpresent);
>	t2p = timespec_diff_to_usec(&feedback->present, &feedback->target);
>
>#if 0
>	switch (window->mode) {
>	case RUN_MODE_PRESENT:
>		printf("%6u: c2p %4u ms, p2p %5d us, t2p %6d us, [%s] "
>			"seq %" PRIu64 "\n", feedback->frame_no, c2p,
>			p2p, t2p,
>			pflags_to_str(flags, flagstr, sizeof(flagstr)), seq);
>		break;
>	case RUN_MODE_FEEDBACK:
>	case RUN_MODE_FEEDBACK_IDLE:
>		printf("%6u: f2c %2u ms, c2p %2u ms, f2p %2u ms, p2p %5d us, "
>			"t2p %6d, [%s], seq %" PRIu64 "\n", feedback->frame_no,
>			f2c, c2p, f2p, p2p, t2p,
>			pflags_to_str(flags, flagstr, sizeof(flagstr)), seq);
>	}
>#endif
>
>	if (window->received_feedback)
>		destroy_feedback(window->received_feedback);
>	window->received_feedback = feedback;
>}
>
>static void
>feedback_discarded(void *data,
>		   struct wp_presentation_feedback *presentation_feedback)
>{
>	struct feedback *feedback = data;
>
>	printf("discarded %u\n", feedback->frame_no);
>
>	destroy_feedback(feedback);
>}
>
>static const struct wp_presentation_feedback_listener feedback_listener = {
>	feedback_sync_output,
>	feedback_presented,
>	feedback_discarded
>};
>
>static void
>window_emulate_rendering(struct window *window)
>{
>	struct timespec delay;
>	int ret;
>
>	if (window->commit_delay_msecs <= 0)
>		return;
>
>	delay.tv_sec = window->commit_delay_msecs / 1000;
>	delay.tv_nsec = (window->commit_delay_msecs % 1000) * 1000000;
>
>	ret = nanosleep(&delay, NULL);
>	if (ret)
>		printf("nanosleep failed: %m\n");
>}
>
>static void
>window_create_feedback(struct window *window, uint32_t frame_stamp)
>{
>	static unsigned seq;
>	struct wp_presentation *pres = window->display->presentation;
>	struct feedback *feedback;
>
>	seq++;
>
>	if (!pres)
>		return;
>
>	feedback = zalloc(sizeof *feedback);
>	if (!feedback)
>		return;
>
>	feedback->window = window;
>	feedback->feedback = wp_presentation_feedback(pres, window->surface);
>	wp_presentation_feedback_add_listener(feedback->feedback,
>					      &feedback_listener, feedback);
>
>	feedback->frame_no = seq;
>
>	clock_gettime(window->display->clk_id, &feedback->commit);
>	feedback->frame_stamp = frame_stamp;
>	feedback->target = feedback->commit;
>
>	wl_list_insert(&window->feedback_list, &feedback->link);
>}
>
>static void
>window_commit_next(struct window *window)
>{
>	struct buffer *buffer;
>
>	buffer = window_next_buffer(window);
>	assert(buffer);
>
>	wl_surface_attach(window->surface, buffer->buffer, 0, 0);
>	wl_surface_damage(window->surface, 0, 0, window->width, window->height);
>	wl_surface_commit(window->surface);
>	buffer->busy = 1;
>}
>
>static const struct wl_callback_listener frame_listener_mode_feedback;
>
>static void
>redraw_mode_feedback(void *data, struct wl_callback *callback, uint32_t time)
>{
>	struct window *window = data;
>
>	if (callback && window->mode == RUN_MODE_FEEDBACK_IDLE)
>		sleep(1);
>
>	if (callback)
>		wl_callback_destroy(callback);
>
>	window_emulate_rendering(window);
>
>	window->callback = wl_surface_frame(window->surface);
>	wl_callback_add_listener(window->callback,
>				 &frame_listener_mode_feedback, window);
>
>	window_create_feedback(window, time);
>	window_commit_next(window);
>}
>
>static const struct wl_callback_listener frame_listener_mode_feedback = {
>	redraw_mode_feedback
>};
>
>static const struct wp_presentation_feedback_listener feedkick_listener;
>
>static void
>window_feedkick(struct window *window)
>{
>	struct wp_presentation *pres = window->display->presentation;
>	struct wp_presentation_feedback *fback;
>
>	fback = wp_presentation_feedback(pres, window->surface);
>	wp_presentation_feedback_add_listener(fback, &feedkick_listener,
>					      window);
>}
>
>static void
>feedkick_presented(void *data,
>		   struct wp_presentation_feedback *presentation_feedback,
>		   uint32_t tv_sec_hi,
>		   uint32_t tv_sec_lo,
>		   uint32_t tv_nsec,
>		   uint32_t refresh_nsec,
>		   uint32_t seq_hi,
>		   uint32_t seq_lo,
>		   uint32_t flags)
>{
>	struct window *window = data;
>
>	wp_presentation_feedback_destroy(presentation_feedback);
>	window->refresh_nsec = refresh_nsec;
>
>	switch (window->mode) {
>	case RUN_MODE_PRESENT:
>		window_emulate_rendering(window);
>		window_create_feedback(window, 0);
>		window_feedkick(window);
>		window_commit_next(window);
>		break;
>	case RUN_MODE_FEEDBACK:
>	case RUN_MODE_FEEDBACK_IDLE:
>		assert(0 && "bad mode");
>	}
>}
>
>static void
>feedkick_discarded(void *data,
>		   struct wp_presentation_feedback *presentation_feedback)
>{
>	struct window *window = data;
>
>	wp_presentation_feedback_destroy(presentation_feedback);
>
>	switch (window->mode) {
>	case RUN_MODE_PRESENT:
>		window_emulate_rendering(window);
>		window_create_feedback(window, 0);
>		window_feedkick(window);
>		window_commit_next(window);
>		break;
>	case RUN_MODE_FEEDBACK:
>	case RUN_MODE_FEEDBACK_IDLE:
>		assert(0 && "bad mode");
>	}
>}
>
>static const struct wp_presentation_feedback_listener feedkick_listener = {
>	feedback_sync_output,
>	feedkick_presented,
>	feedkick_discarded
>};
>
>static void
>firstdraw_mode_burst(struct window *window)
>{
>	window_emulate_rendering(window);
>
>	switch (window->mode) {
>	case RUN_MODE_PRESENT:
>		window_create_feedback(window, 0);
>		break;
>	case RUN_MODE_FEEDBACK:
>	case RUN_MODE_FEEDBACK_IDLE:
>		assert(0 && "bad mode");
>	}
>
>	window_feedkick(window);
>	window_commit_next(window);
>}
>
>static void
>window_prerender(struct window *window)
>{
>	int i;
>	int timefactor = 1000000 / window->num_buffers;
>
>	for (i = 0; i < window->num_buffers; i++) {
>		struct buffer *buf = &window->buffers[i];
>
>		if (buf->busy)
>			fprintf(stderr, "wl_buffer id %u) busy\n",
>				wl_proxy_get_id(
>					(struct wl_proxy *)buf->buffer));
>
>		paint_pixels(buf->shm_data, window->width, window->height,
>			     i * timefactor);
>	}
>}
>
>static void
>output_destroy(struct output *o)
>{
>	wl_output_destroy(o->output);
>	wl_list_remove(&o->link);
>	free(o);
>}
>
>static void
>display_add_output(struct display *d, uint32_t name, uint32_t version)
>{
>	struct output *o;
>
>	o = zalloc(sizeof(*o));
>	assert(o);
>
>	o->output = wl_registry_bind(d->registry, name,
>				     &wl_output_interface, 1);
>	o->name = name;
>	wl_list_insert(&d->output_list, &o->link);
>}
>
>static void
>presentation_clock_id(void *data, struct wp_presentation *presentation,
>		      uint32_t clk_id)
>{
>	struct display *d = data;
>
>	d->clk_id = clk_id;
>}
>
>static const struct wp_presentation_listener presentation_listener = {
>	presentation_clock_id
>};
>
>static void
>shm_format(void *data, struct wl_shm *wl_shm, uint32_t format)
>{
>	struct display *d = data;
>
>	d->formats |= (1 << format);
>}
>
>static const struct wl_shm_listener shm_listener = {
>	shm_format
>};
>
>static void
>registry_handle_global(void *data, struct wl_registry *registry,
>		       uint32_t name, const char *interface, uint32_t version)
>{
>	struct display *d = data;
>
>	if (strcmp(interface, "wl_compositor") == 0) {
>		d->compositor =
>			wl_registry_bind(registry,
>					 name, &wl_compositor_interface, 1);
>	} else if (strcmp(interface, "wl_shell") == 0) {
>		d->shell = wl_registry_bind(registry,
>					    name, &wl_shell_interface, 1);
>	} else if (strcmp(interface, "wl_shm") == 0) {
>		d->shm = wl_registry_bind(registry,
>					  name, &wl_shm_interface, 1);
>		wl_shm_add_listener(d->shm, &shm_listener, d);
>	} else if (strcmp(interface, "wl_output") == 0) {
>		display_add_output(d, name, version);
>	} else if (strcmp(interface, wp_presentation_interface.name) == 0) {
>		d->presentation =
>			wl_registry_bind(registry,
>					 name, &wp_presentation_interface, 1);
>		wp_presentation_add_listener(d->presentation,
>					     &presentation_listener, d);
>	}
>}
>
>static void
>registry_handle_global_remove(void *data, struct wl_registry *registry,
>			      uint32_t name)
>{
>	struct display *d = data;
>	struct output *output, *otmp;
>
>	wl_list_for_each_safe(output, otmp, &d->output_list, link) {
>		if (output->name != name)
>			continue;
>
>		output_destroy(output);
>	}
>}
>
>static const struct wl_registry_listener registry_listener = {
>	registry_handle_global,
>	registry_handle_global_remove
>};
>
>static struct display *
>create_display(void)
>{
>	struct display *display;
>
>	display = malloc(sizeof *display);
>	if (display == NULL) {
>		fprintf(stderr, "out of memory\n");
>		exit(1);
>	}
>	display->display = wl_display_connect(NULL);
>	assert(display->display);
>
>	display->formats = 0;
>	display->clk_id = -1;
>	wl_list_init(&display->output_list);
>	display->registry = wl_display_get_registry(display->display);
>	wl_registry_add_listener(display->registry,
>				 &registry_listener, display);
>	wl_display_roundtrip(display->display);
>	if (display->shm == NULL) {
>		fprintf(stderr, "No wl_shm global\n");
>		exit(1);
>	}
>
>	wl_display_roundtrip(display->display);
>
>	if (!(display->formats & (1 << WL_SHM_FORMAT_XRGB8888))) {
>		fprintf(stderr, "WL_SHM_FORMAT_XRGB32 not available\n");
>		exit(1);
>	}
>
>	wl_display_get_fd(display->display);
>
>	return display;
>}
>
>static void
>destroy_display(struct display *display)
>{
>	while (!wl_list_empty(&display->output_list)) {
>		struct output *o;
>
>		o = wl_container_of(display->output_list.next, o, link);
>		output_destroy(o);
>	}
>
>	if (display->shm)
>		wl_shm_destroy(display->shm);
>
>	if (display->shell)
>		wl_shell_destroy(display->shell);
>
>	if (display->compositor)
>		wl_compositor_destroy(display->compositor);
>
>	wl_registry_destroy(display->registry);
>	wl_display_flush(display->display);
>	wl_display_disconnect(display->display);
>	free(display);
>}
>
>static int running = 1;
>
>static void
>signal_int(int signum)
>{
>	running = 0;
>}
>
>static void
>usage(const char *prog, int exit_code)
>{
>	fprintf(stderr, "Usage: %s [mode] [options]\n"
>		"where 'mode' is one of\n"
>		"  -f\t\trun in feedback mode (default)\n"
>		"  -i\t\trun in feedback-idle mode; sleep 1s between frames\n"
>		"  -p\t\trun in low-latency presentation mode\n"
>		"and 'options' may include\n"
>		"  -d msecs\temulate the time used for rendering by a delay \n"
>		"\t\tof the given milliseconds before commit\n\n",
>		prog);
>
>	fprintf(stderr, "Printed timing statistics, depending on mode:\n"
>		"  commit sequence number\n"
>		"  f2c: time from frame callback timestamp to commit\n"
>		"  c2p: time from commit to presentation\n"
>		"  f2p: time from frame callback timestamp to presentation\n"
>		"  p2p: time from previous presentation to this one\n"
>		"  t2p: time from target timestamp to presentation\n"
>		"  seq: MSC\n");
>
>
>	exit(exit_code);
>}
>
>int
>main(int argc, char **argv)
>{
>	struct sigaction sigint;
>	struct display *display;
>	struct window *window;
>	int ret = 0;
>	enum run_mode mode = RUN_MODE_FEEDBACK;
>	int i;
>	int commit_delay_msecs = 0;
>
>	for (i = 1; i < argc; i++) {
>		if (strcmp("-f", argv[i]) == 0)
>			mode = RUN_MODE_FEEDBACK;
>		else if (strcmp("-i", argv[i]) == 0)
>			mode = RUN_MODE_FEEDBACK_IDLE;
>		else if (strcmp("-p", argv[i]) == 0)
>			mode = RUN_MODE_PRESENT;
>		else if ((strcmp("-d", argv[i]) == 0) && (i + 1 < argc)) {
>			i++;
>			commit_delay_msecs = atoi(argv[i]);
>		}
>		else
>			usage(argv[0], EXIT_FAILURE);
>	}
>
>	display = create_display();
>	window = create_window(display, 250, 250, mode, commit_delay_msecs);
>	if (!window)
>		return 1;
>
>	sigint.sa_handler = signal_int;
>	sigemptyset(&sigint.sa_mask);
>	sigint.sa_flags = SA_RESETHAND;
>	sigaction(SIGINT, &sigint, NULL);
>
>	window_prerender(window);
>
>	switch (mode) {
>	case RUN_MODE_FEEDBACK:
>	case RUN_MODE_FEEDBACK_IDLE:
>		redraw_mode_feedback(window, NULL, 0);
>		break;
>	case RUN_MODE_PRESENT:
>		firstdraw_mode_burst(window);
>		break;
>	}
>
>	while (running && ret != -1)
>		ret = wl_display_dispatch(display->display);
>
>	fprintf(stderr, "presentation-shm exiting\n");
>	destroy_window(window);
>	destroy_display(display);
>
>	return 0;
>}

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Attachments on bug 97932: 126789

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