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fixed and simplified setTimeout() by using an integer timer handle (github issue #218)

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Fabrice Bellard 2024-01-19 10:20:34 +01:00
parent 84058766e9
commit 9e561d5c2e
1 changed files with 39 additions and 64 deletions
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95
quickjs-libc.c
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@ -89,7 +89,7 @@ typedef struct {
typedef struct {
struct list_head link;
BOOL has_object;
int timer_id;
int64_t timeout;
JSValue func;
} JSOSTimer;
@ -125,6 +125,7 @@ typedef struct JSThreadState {
struct list_head os_timers; /* list of JSOSTimer.link */
struct list_head port_list; /* list of JSWorkerMessageHandler.link */
int eval_script_recurse; /* only used in the main thread */
int next_timer_id; /* for setTimeout() */
/* not used in the main thread */
JSWorkerMessagePipe *recv_pipe, *send_pipe;
} JSThreadState;
@ -2006,41 +2007,13 @@ static JSValue js_os_now(JSContext *ctx, JSValue this_val,
return JS_NewFloat64(ctx, (double)get_time_ns() / 1e6);
}
static void unlink_timer(JSRuntime *rt, JSOSTimer *th)
{
if (th->link.prev) {
list_del(&th->link);
th->link.prev = th->link.next = NULL;
}
}
static void free_timer(JSRuntime *rt, JSOSTimer *th)
{
list_del(&th->link);
JS_FreeValueRT(rt, th->func);
js_free_rt(rt, th);
}
static JSClassID js_os_timer_class_id;
static void js_os_timer_finalizer(JSRuntime *rt, JSValue val)
{
JSOSTimer *th = JS_GetOpaque(val, js_os_timer_class_id);
if (th) {
th->has_object = FALSE;
if (!th->link.prev)
free_timer(rt, th);
}
}
static void js_os_timer_mark(JSRuntime *rt, JSValueConst val,
JS_MarkFunc *mark_func)
{
JSOSTimer *th = JS_GetOpaque(val, js_os_timer_class_id);
if (th) {
JS_MarkValue(rt, th->func, mark_func);
}
}
static JSValue js_os_setTimeout(JSContext *ctx, JSValueConst this_val,
int argc, JSValueConst *argv)
{
@ -2049,45 +2022,56 @@ static JSValue js_os_setTimeout(JSContext *ctx, JSValueConst this_val,
int64_t delay;
JSValueConst func;
JSOSTimer *th;
JSValue obj;
func = argv[0];
if (!JS_IsFunction(ctx, func))
return JS_ThrowTypeError(ctx, "not a function");
if (JS_ToInt64(ctx, &delay, argv[1]))
return JS_EXCEPTION;
obj = JS_NewObjectClass(ctx, js_os_timer_class_id);
if (JS_IsException(obj))
return obj;
th = js_mallocz(ctx, sizeof(*th));
if (!th) {
JS_FreeValue(ctx, obj);
if (!th)
return JS_EXCEPTION;
}
th->has_object = TRUE;
th->timer_id = ts->next_timer_id;
if (ts->next_timer_id == INT32_MAX)
ts->next_timer_id = 1;
else
ts->next_timer_id++;
th->timeout = get_time_ms() + delay;
th->func = JS_DupValue(ctx, func);
list_add_tail(&th->link, &ts->os_timers);
JS_SetOpaque(obj, th);
return obj;
return JS_NewInt32(ctx, th->timer_id);
}
static JSOSTimer *find_timer_by_id(JSThreadState *ts, int timer_id)
{
struct list_head *el;
if (timer_id <= 0)
return NULL;
list_for_each(el, &ts->os_timers) {
JSOSTimer *th = list_entry(el, JSOSTimer, link);
if (th->timer_id == timer_id)
return th;
}
return NULL;
}
static JSValue js_os_clearTimeout(JSContext *ctx, JSValueConst this_val,
int argc, JSValueConst *argv)
{
JSOSTimer *th = JS_GetOpaque2(ctx, argv[0], js_os_timer_class_id);
if (!th)
JSRuntime *rt = JS_GetRuntime(ctx);
JSThreadState *ts = JS_GetRuntimeOpaque(rt);
JSOSTimer *th;
int timer_id;
if (JS_ToInt32(ctx, &timer_id, argv[0]))
return JS_EXCEPTION;
unlink_timer(JS_GetRuntime(ctx), th);
th = find_timer_by_id(ts, timer_id);
if (!th)
return JS_UNDEFINED;
free_timer(rt, th);
return JS_UNDEFINED;
}
static JSClassDef js_os_timer_class = {
"OSTimer",
.finalizer = js_os_timer_finalizer,
.gc_mark = js_os_timer_mark,
};
/* return a promise */
static JSValue js_os_sleepAsync(JSContext *ctx, JSValueConst this_val,
int argc, JSValueConst *argv)
@ -2111,7 +2095,7 @@ static JSValue js_os_sleepAsync(JSContext *ctx, JSValueConst this_val,
JS_FreeValue(ctx, resolving_funcs[1]);
return JS_EXCEPTION;
}
th->has_object = FALSE;
th->timer_id = -1;
th->timeout = get_time_ms() + delay;
th->func = JS_DupValue(ctx, resolving_funcs[0]);
list_add_tail(&th->link, &ts->os_timers);
@ -2161,8 +2145,6 @@ static int js_os_poll(JSContext *ctx)
/* the timer expired */
func = th->func;
th->func = JS_UNDEFINED;
unlink_timer(rt, th);
if (!th->has_object)
free_timer(rt, th);
call_handler(ctx, func);
JS_FreeValue(ctx, func);
@ -2330,8 +2312,6 @@ static int js_os_poll(JSContext *ctx)
/* the timer expired */
func = th->func;
th->func = JS_UNDEFINED;
unlink_timer(rt, th);
if (!th->has_object)
free_timer(rt, th);
call_handler(ctx, func);
JS_FreeValue(ctx, func);
@ -3735,10 +3715,6 @@ static int js_os_init(JSContext *ctx, JSModuleDef *m)
{
os_poll_func = js_os_poll;
/* OSTimer class */
JS_NewClassID(&js_os_timer_class_id);
JS_NewClass(JS_GetRuntime(ctx), js_os_timer_class_id, &js_os_timer_class);
#ifdef USE_WORKER
{
JSRuntime *rt = JS_GetRuntime(ctx);
@ -3850,6 +3826,7 @@ void js_std_init_handlers(JSRuntime *rt)
init_list_head(&ts->os_signal_handlers);
init_list_head(&ts->os_timers);
init_list_head(&ts->port_list);
ts->next_timer_id = 1;
JS_SetRuntimeOpaque(rt, ts);
@ -3883,8 +3860,6 @@ void js_std_free_handlers(JSRuntime *rt)
list_for_each_safe(el, el1, &ts->os_timers) {
JSOSTimer *th = list_entry(el, JSOSTimer, link);
unlink_timer(rt, th);
if (!th->has_object)
free_timer(rt, th);
}