133 lines
3.7 KiB
C++
133 lines
3.7 KiB
C++
/*
|
|
* Copyright 2008 François Revol <mmu_man@users.sourceforge.net>
|
|
*
|
|
* This file is part of NetSurf, http://www.netsurf-browser.org/
|
|
*
|
|
* NetSurf is free software; you can redistribute it and/or modify
|
|
* it under the terms of the GNU General Public License as published by
|
|
* the Free Software Foundation; version 2 of the License.
|
|
*
|
|
* NetSurf 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 General Public License for more details.
|
|
*
|
|
* You should have received a copy of the GNU General Public License
|
|
* along with this program. If not, see <http://www.gnu.org/licenses/>.
|
|
*/
|
|
|
|
#define __STDBOOL_H__ 1
|
|
#include <stdlib.h>
|
|
#include <stdbool.h>
|
|
#include <OS.h>
|
|
#include <List.h>
|
|
|
|
extern "C" {
|
|
#include "desktop/browser.h"
|
|
|
|
#ifdef DEBUG_BEOS_SCHEDULE
|
|
#include "utils/log.h"
|
|
#else
|
|
#define LOG(X)
|
|
#endif
|
|
}
|
|
|
|
/** Killable callback closure embodiment. */
|
|
typedef struct {
|
|
void (*callback)(void *); /**< The callback function. */
|
|
void *context; /**< The context for the callback. */
|
|
bool callback_killed; /**< Whether or not this was killed. */
|
|
bool callback_fired; /**< Whether or not this has fired yet. */
|
|
bigtime_t timeout;
|
|
} _nsbeos_callback_t;
|
|
|
|
/** List of all callbacks. */
|
|
static BList *callbacks = NULL;
|
|
|
|
/** earliest deadline. It's used for select() in gui_poll() */
|
|
bigtime_t earliest_callback_timeout = B_INFINITE_TIMEOUT;
|
|
|
|
|
|
static bool
|
|
nsbeos_schedule_kill_callback(void *_target, void *_match)
|
|
{
|
|
_nsbeos_callback_t *target = (_nsbeos_callback_t *)_target;
|
|
_nsbeos_callback_t *match = (_nsbeos_callback_t *)_match;
|
|
if ((target->callback == match->callback) &&
|
|
(target->context == match->context)) {
|
|
LOG(("Found match for %p(%p), killing.",
|
|
target->callback, target->context));
|
|
target->callback = NULL;
|
|
target->context = NULL;
|
|
target->callback_killed = true;
|
|
}
|
|
return false;
|
|
}
|
|
|
|
void
|
|
schedule_remove(void (*callback)(void *p), void *p)
|
|
{
|
|
LOG(("schedule_remove() for %p(%p)", cb->callback, cb->context));
|
|
if (callbacks == NULL)
|
|
return;
|
|
_nsbeos_callback_t cb_match;
|
|
cb_match.callback = callback;
|
|
cb_match.context = p;
|
|
|
|
|
|
callbacks->DoForEach(nsbeos_schedule_kill_callback, &cb_match);
|
|
}
|
|
|
|
void
|
|
schedule(int t, void (*callback)(void *p), void *p)
|
|
{
|
|
LOG(("schedule(%d, %p, %p)", t, cb->callback, cb->context));
|
|
if (callbacks == NULL)
|
|
callbacks = new BList;
|
|
|
|
bigtime_t timeout = system_time() + t * 10 * 1000LL;
|
|
const int msec_timeout = t * 10;
|
|
_nsbeos_callback_t *cb = (_nsbeos_callback_t *)malloc(sizeof(_nsbeos_callback_t));
|
|
/* Kill any pending schedule of this kind. */
|
|
schedule_remove(callback, p);
|
|
cb->callback = callback;
|
|
cb->context = p;
|
|
cb->callback_killed = cb->callback_fired = false;
|
|
cb->timeout = timeout;
|
|
if (earliest_callback_timeout > timeout)
|
|
earliest_callback_timeout = timeout;
|
|
callbacks->AddItem(cb);
|
|
}
|
|
|
|
bool
|
|
schedule_run(void)
|
|
{
|
|
LOG(("schedule_run()"));
|
|
if (callbacks == NULL)
|
|
return false; /* Nothing to do */
|
|
|
|
bigtime_t now = system_time();
|
|
earliest_callback_timeout = B_INFINITE_TIMEOUT;
|
|
int32 i;
|
|
|
|
LOG(("Checking %ld callbacks to for deadline.", this_run->CountItems()));
|
|
|
|
/* Run all the callbacks which made it this far. */
|
|
for (i = 0; i < callbacks->CountItems(); ) {
|
|
_nsbeos_callback_t *cb = (_nsbeos_callback_t *)(callbacks->ItemAt(i));
|
|
if (cb->timeout > now) {
|
|
// update next deadline
|
|
if (earliest_callback_timeout > cb->timeout)
|
|
earliest_callback_timeout = cb->timeout;
|
|
i++;
|
|
continue;
|
|
}
|
|
LOG(("Running callbacks %p(%p).", cb->callback, cb->context));
|
|
if (!cb->callback_killed)
|
|
cb->callback(cb->context);
|
|
callbacks->RemoveItem(cb);
|
|
free(cb);
|
|
}
|
|
return true;
|
|
}
|