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boinc/client/app_graphics.C

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// Berkeley Open Infrastructure for Network Computing
// http://boinc.berkeley.edu
// Copyright (C) 2005 University of California
//
// This is free software; you can redistribute it and/or
// modify it under the terms of the GNU Lesser General Public
// License as published by the Free Software Foundation;
// either version 2.1 of the License, or (at your option) any later version.
//
// This software is distributed in the hope that it will be useful,
// but WITHOUT ANY WARRANTY; without even the implied warranty of
// MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.
// See the GNU Lesser General Public License for more details.
//
// To view the GNU Lesser General Public License visit
// http://www.gnu.org/copyleft/lesser.html
// or write to the Free Software Foundation, Inc.,
// 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA
// graphics-related interaction with running apps
#include "cpp.h"
#ifdef _WIN32
#include "boinc_win.h"
#else
#include "config.h"
#endif
#include "diagnostics.h"
#include "client_state.h"
#include "client_msgs.h"
#include "app.h"
#include "util.h"
void ACTIVE_TASK::request_graphics_mode(GRAPHICS_MSG& m) {
char buf[MSG_CHANNEL_SIZE], buf2[256];
if (!app_client_shm.shm) return;
graphics_msg = m; // save graphics_station, desktop, display
strcpy(buf, xml_graphics_modes[m.mode]);
if (strlen(m.window_station)) {
sprintf(buf2, "<window_station>%s</window_station>", m.window_station);
strcat(buf, buf2);
}
if (strlen(m.desktop)) {
sprintf(buf2, "<desktop>%s</desktop>", m.desktop);
strcat(buf, buf2);
}
if (strlen(m.display)) {
sprintf(buf2, "<display>%s</display>", m.display);
strcat(buf, buf2);
}
if (log_flags.scrsave_debug) {
msg_printf(0, MSG_INFO,
"ACTIVE_TASK::request_graphics_mode(): requesting graphics mode %s for %s",
xml_graphics_modes[m.mode], result->name
);
}
graphics_request_queue.msg_queue_send(
buf,
app_client_shm.shm->graphics_request
);
}
void ACTIVE_TASK::check_graphics_mode_ack() {
GRAPHICS_MSG gm;
char buf[MSG_CHANNEL_SIZE];
#if (defined(__APPLE__) && defined(__i386__))
// PowerPC apps emulated on i386 Macs crash if running graphics
if (powerpc_emulated_on_i386) {
graphics_mode_acked = MODE_UNSUPPORTED;
return;
}
#endif
if (!app_client_shm.shm) return;
if (app_client_shm.shm->graphics_reply.get_msg(buf)) {
app_client_shm.decode_graphics_msg(buf, gm);
if (log_flags.scrsave_debug) {
msg_printf(0, MSG_INFO,
"ACTIVE_TASK::check_graphics_mode_ack(): got graphics ack %s for %s, previous mode %s",
buf, result->name, xml_graphics_modes[graphics_mode_acked]
);
}
// if we receive MODE_HIDE_GRAPHICS from an application acting as the
// screensaver it can be for one of two reasons:
// 1) application shut down because it was done processing.
// 2) user input was detected.
//
// in the first condition we should promote another application to be
// screensaver in the SS_LOGIC::poll function. In the second condition
// we should inform the various screensaver components to shutdown.
if (is_ss_app && (graphics_mode_acked == MODE_FULLSCREEN) &&
(gm.mode != MODE_FULLSCREEN) && (gm.mode != MODE_REREAD_PREFS) &&
!gstate.host_info.users_idle(true, 0.5)) {
gstate.ss_logic.stop_ss();
if (log_flags.scrsave_debug) {
msg_printf(0, MSG_INFO,
"ACTIVE_TASK::check_graphics_mode_ack(): shutting down the screensaver"
);
}
}
if (gm.mode != MODE_REREAD_PREFS) {
graphics_mode_acked = gm.mode;
}
}
}
// return the active task that's currently acting as screensaver
//
ACTIVE_TASK* ACTIVE_TASK_SET::get_ss_app() {
unsigned int i;
for (i=0; i<active_tasks.size(); i++) {
ACTIVE_TASK* atp = active_tasks[i];
if (atp->is_ss_app) {
return atp;
}
}
return NULL;
}
// remember graphics state of apps.
// Called when entering screensaver mode,
// so that we can return to same state later
//
void ACTIVE_TASK_SET::save_app_modes() {
unsigned int i;
ACTIVE_TASK* atp;
for (i=0; i<active_tasks.size(); i++) {
atp = active_tasks[i];
// nothing should be in fullscreen mode.
//
if (atp->graphics_mode_acked == MODE_FULLSCREEN) {
atp->graphics_mode_acked = MODE_HIDE_GRAPHICS;
}
atp->graphics_mode_before_ss = atp->graphics_mode_acked;
if (log_flags.scrsave_debug) {
msg_printf(0, MSG_INFO,
"ACTIVE_TASK_SET::save_app_modes(): saved mode %d",
atp->graphics_mode_acked
);
}
}
}
void ACTIVE_TASK_SET::hide_apps() {
unsigned int i;
ACTIVE_TASK* atp;
for (i=0; i<active_tasks.size(); i++) {
atp = active_tasks[i];
atp->graphics_msg.mode = MODE_HIDE_GRAPHICS;
atp->request_graphics_mode(atp->graphics_msg);
}
}
// return apps to the mode they were in before screensaving started
//
void ACTIVE_TASK_SET::restore_apps() {
unsigned int i;
ACTIVE_TASK* atp;
for (i=0; i<active_tasks.size(); i++) {
atp = active_tasks[i];
if (atp->graphics_mode_before_ss == MODE_WINDOW) {
atp->graphics_msg.mode = MODE_WINDOW;
atp->request_graphics_mode(atp->graphics_msg);
}
}
}
void ACTIVE_TASK_SET::graphics_poll() {
unsigned int i;
ACTIVE_TASK* atp;
for (i=0; i<active_tasks.size(); i++) {
atp = active_tasks[i];
if (!atp->process_exists()) continue;
atp->graphics_request_queue.msg_queue_poll(
atp->app_client_shm.shm->graphics_request
);
atp->check_graphics_mode_ack();
// If screensaver application has not responded to our request to exit
// MODE_FULLSCREEN after 2 seconds,
// then assume it has hung and kill it,
// so it doesn't block access to the computer.
// First try an exit request.
// If it has not exit after 2 more seconds, kill it.
if (atp->graphics_mode_ack_timeout) // If we are waiting for app to stop screensaver mode
if ( atp->is_ss_app || (atp->graphics_mode_acked != MODE_FULLSCREEN) ) {
atp->exit_requested = false;
atp->graphics_mode_ack_timeout = 0.0; // Reset Mac screensaver safety timer
}
if (atp->graphics_mode_ack_timeout) {
if (gstate.now > atp->graphics_mode_ack_timeout + 2.0) {
if (atp->has_task_exited()) { // Successfully exited
atp->exit_requested = false;
atp->graphics_mode_ack_timeout = 0.0; // Reset safety timer
} else {
if (! atp->exit_requested) {
atp->exit_requested = true;
atp->request_exit(); // Request exit after 2 seconds
atp->graphics_mode_ack_timeout = gstate.now; // Wait 2 more seconds for app to exit
msg_printf(atp->wup->project, MSG_ERROR,
"%s not responding to screensaver, exiting",
atp->app_version->app_name
);
} else {
atp->exit_requested = false;
atp->graphics_mode_ack_timeout = 0.0; // Reset safety timer
atp->kill_task(); // Kill app if exit request failed after 2 seconds
}
}
}
}
}
}
bool ACTIVE_TASK::supports_graphics() {
#if (defined(__APPLE__) && defined(__i386__))
// PowerPC apps emulated on i386 Macs crash if running graphics
if (powerpc_emulated_on_i386)
return false;
#endif
if (graphics_mode_acked == MODE_UNSUPPORTED) return false;
if (task_state != PROCESS_EXECUTING) return false;
return true;
}
// Return the next graphics-capable running app.
// Always try to choose a new project.
// Preferences goes to apps with pre-ss mode WINDOW,
// then apps with pre-ss mode HIDE
//
ACTIVE_TASK* CLIENT_STATE::get_next_graphics_capable_app() {
static int project_index=0;
unsigned int i, j;
ACTIVE_TASK *atp, *best_atp;
PROJECT *p;
// check to see if the applications have changed the graphics mode;
// this can happen if they fail to find the target desktop
//
for (i=0; i<active_tasks.active_tasks.size(); i++) {
atp = active_tasks.active_tasks[i];
atp->check_graphics_mode_ack();
}
// loop through all projects starting with the one at project_index
//
for (i=0; i<projects.size(); ++i) {
project_index %= projects.size();
p = projects[project_index++];
best_atp = NULL;
for (j=0; j<active_tasks.active_tasks.size(); j++) {
atp = active_tasks.active_tasks[j];
if (atp->scheduler_state != CPU_SCHED_SCHEDULED) continue;
// don't choose an application that doesn't support graphics
if (atp->graphics_mode_acked == MODE_UNSUPPORTED) continue;
// don't choose an application that hasn't ack'ed the
// hide graphics request
if (atp->graphics_mode_acked != MODE_HIDE_GRAPHICS) continue;
if (atp->result->project != p) continue;
if (!best_atp && atp->graphics_mode_before_ss == MODE_WINDOW) {
best_atp = atp;
}
if (!best_atp && atp->graphics_mode_before_ss == MODE_HIDE_GRAPHICS) {
best_atp = atp;
}
if (!best_atp) {
best_atp = atp;
}
if (best_atp) {
if (log_flags.scrsave_debug) {
msg_printf(0, MSG_INFO,
"CLIENT_STATE::get_next_graphics_capable_app(): get_next_app: %s",
best_atp->result->name
);
}
return atp;
}
}
}
if (log_flags.scrsave_debug) {
msg_printf(0, MSG_INFO,
"CLIENT_STATE::get_next_graphics_capable_app(): get_next_app: none"
);
}
return NULL;
}
const char *BOINC_RCSID_71e9cd9f4d = "$Id$";
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