mirror of
https://github.com/netsurf-browser/netsurf
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c105738fa3
This changes the LOG macro to be varadic removing the need for all callsites to have double bracketing and allows for future improvement on how we use the logging macros. The callsites were changed with coccinelle and the changes checked by hand. Compile tested for several frontends but not all. A formatting annotation has also been added which allows the compiler to check the parameters and types passed to the logging.
137 lines
4.3 KiB
C
137 lines
4.3 KiB
C
/*
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* Copyright 2006-2007 Daniel Silverstone <dsilvers@digital-scurf.org>
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*
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* This file is part of NetSurf, http://www.netsurf-browser.org/
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*
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* NetSurf is free software; you can redistribute it and/or modify
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* it under the terms of the GNU General Public License as published by
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* the Free Software Foundation; version 2 of the License.
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*
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* NetSurf is distributed in the hope that it will be useful,
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* but WITHOUT ANY WARRANTY; without even the implied warranty of
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* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
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* GNU General Public License for more details.
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*
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* You should have received a copy of the GNU General Public License
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* along with this program. If not, see <http://www.gnu.org/licenses/>.
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*/
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#include <glib.h>
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#include <stdlib.h>
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#include <stdbool.h>
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#include "utils/errors.h"
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#include "gtk/schedule.h"
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#ifdef DEBUG_GTK_SCHEDULE
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#include "utils/log.h"
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#else
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#define LOG(format, args...) ((void) 0)
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#endif
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/** Killable callback closure embodiment. */
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typedef struct {
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void (*callback)(void *); /**< The callback function. */
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void *context; /**< The context for the callback. */
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bool callback_killed; /**< Whether or not this was killed. */
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} _nsgtk_callback_t;
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/** List of callbacks which have occurred and are pending running. */
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static GList *pending_callbacks = NULL;
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/** List of callbacks which are queued to occur in the future. */
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static GList *queued_callbacks = NULL;
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/** List of callbacks which are about to be run in this ::schedule_run. */
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static GList *this_run = NULL;
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static gboolean
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nsgtk_schedule_generic_callback(gpointer data)
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{
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_nsgtk_callback_t *cb = (_nsgtk_callback_t *)(data);
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if (cb->callback_killed) {
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/* This callback instance has been killed. */
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LOG("CB at %p already dead.", cb);
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}
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queued_callbacks = g_list_remove(queued_callbacks, cb);
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pending_callbacks = g_list_append(pending_callbacks, cb);
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return FALSE;
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}
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static void
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nsgtk_schedule_kill_callback(void *_target, void *_match)
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{
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_nsgtk_callback_t *target = (_nsgtk_callback_t *)_target;
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_nsgtk_callback_t *match = (_nsgtk_callback_t *)_match;
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if ((target->callback == match->callback) &&
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(target->context == match->context)) {
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LOG("Found match for %p(%p), killing.", target->callback, target->context);
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target->callback = NULL;
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target->context = NULL;
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target->callback_killed = true;
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}
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}
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static void
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schedule_remove(void (*callback)(void *p), void *p)
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{
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_nsgtk_callback_t cb_match = {
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.callback = callback,
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.context = p,
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};
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g_list_foreach(queued_callbacks,
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nsgtk_schedule_kill_callback, &cb_match);
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g_list_foreach(pending_callbacks,
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nsgtk_schedule_kill_callback, &cb_match);
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g_list_foreach(this_run,
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nsgtk_schedule_kill_callback, &cb_match);
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}
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/* exported interface documented in gtk/schedule.h */
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nserror nsgtk_schedule(int t, void (*callback)(void *p), void *p)
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{
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_nsgtk_callback_t *cb;
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/* Kill any pending schedule of this kind. */
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schedule_remove(callback, p);
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if (t < 0) {
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return NSERROR_OK;
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}
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cb = malloc(sizeof(_nsgtk_callback_t));
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cb->callback = callback;
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cb->context = p;
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cb->callback_killed = false;
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/* Prepend is faster right now. */
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queued_callbacks = g_list_prepend(queued_callbacks, cb);
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g_timeout_add(t, nsgtk_schedule_generic_callback, cb);
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return NSERROR_OK;
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}
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bool
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schedule_run(void)
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{
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/* Capture this run of pending callbacks into the list. */
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this_run = pending_callbacks;
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if (this_run == NULL)
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return false; /* Nothing to do */
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/* Clear the pending list. */
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pending_callbacks = NULL;
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LOG("Captured a run of %d callbacks to fire.", g_list_length(this_run));
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/* Run all the callbacks which made it this far. */
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while (this_run != NULL) {
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_nsgtk_callback_t *cb = (_nsgtk_callback_t *)(this_run->data);
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this_run = g_list_remove(this_run, this_run->data);
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if (!cb->callback_killed)
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cb->callback(cb->context);
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free(cb);
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}
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return true;
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}
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