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/* SPDX-License-Identifier: GPL-2.0-or-later
* Copyright 2018 Blender Foundation. All rights reserved. */
/** \file
* \ingroup bli
*/
#include "BLI_timer.h"
#include "BLI_listbase.h"
#include "MEM_guardedalloc.h"
#include "PIL_time.h"
#define GET_TIME() PIL_check_seconds_timer()
typedef struct TimedFunction {
struct TimedFunction *next, *prev;
BLI_timer_func func;
BLI_timer_data_free user_data_free;
void *user_data;
double next_time;
uintptr_t uuid;
bool tag_removal;
bool persistent;
} TimedFunction;
typedef struct TimerContainer {
ListBase funcs;
} TimerContainer;
static TimerContainer GlobalTimer = {{0}};
void BLI_timer_register(uintptr_t uuid,
BLI_timer_func func,
void *user_data,
BLI_timer_data_free user_data_free,
double first_interval,
bool persistent)
{
TimedFunction *timed_func = MEM_callocN(sizeof(TimedFunction), __func__);
timed_func->func = func;
timed_func->user_data_free = user_data_free;
timed_func->user_data = user_data;
timed_func->next_time = GET_TIME() + first_interval;
timed_func->tag_removal = false;
timed_func->persistent = persistent;
timed_func->uuid = uuid;
BLI_addtail(&GlobalTimer.funcs, timed_func);
}
static void clear_user_data(TimedFunction *timed_func)
{
if (timed_func->user_data_free) {
timed_func->user_data_free(timed_func->uuid, timed_func->user_data);
timed_func->user_data_free = NULL;
}
}
bool BLI_timer_unregister(uintptr_t uuid)
{
LISTBASE_FOREACH (TimedFunction *, timed_func, &GlobalTimer.funcs) {
if (timed_func->uuid == uuid && !timed_func->tag_removal) {
timed_func->tag_removal = true;
clear_user_data(timed_func);
return true;
}
}
return false;
}
bool BLI_timer_is_registered(uintptr_t uuid)
{
LISTBASE_FOREACH (TimedFunction *, timed_func, &GlobalTimer.funcs) {
if (timed_func->uuid == uuid && !timed_func->tag_removal) {
return true;
}
}
return false;
}
static void execute_functions_if_necessary(void)
{
double current_time = GET_TIME();
LISTBASE_FOREACH (TimedFunction *, timed_func, &GlobalTimer.funcs) {
if (timed_func->tag_removal) {
continue;
}
if (timed_func->next_time > current_time) {
continue;
}
double ret = timed_func->func(timed_func->uuid, timed_func->user_data);
if (ret < 0) {
timed_func->tag_removal = true;
}
else {
timed_func->next_time = current_time + ret;
}
}
}
static void remove_tagged_functions(void)
{
for (TimedFunction *timed_func = GlobalTimer.funcs.first; timed_func;) {
TimedFunction *next = timed_func->next;
if (timed_func->tag_removal) {
clear_user_data(timed_func);
BLI_freelinkN(&GlobalTimer.funcs, timed_func);
}
timed_func = next;
}
}
void BLI_timer_execute()
{
execute_functions_if_necessary();
remove_tagged_functions();
}
void BLI_timer_free()
{
LISTBASE_FOREACH (TimedFunction *, timed_func, &GlobalTimer.funcs) {
timed_func->tag_removal = true;
}
remove_tagged_functions();
}
static void remove_non_persistent_functions(void)
{
LISTBASE_FOREACH (TimedFunction *, timed_func, &GlobalTimer.funcs) {
if (!timed_func->persistent) {
timed_func->tag_removal = true;
}
}
}
void BLI_timer_on_file_load(void)
{
remove_non_persistent_functions();
}
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