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Fix ThreadSanitizer warning in quickjs-libc (#562)

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A global function pointer was getting accessed from multiple threads.
Replace it with an atomic integer and an immediate function call.
This commit is contained in:
Ben Noordhuis 2024-09-28 22:27:18 +02:00 committed by GitHub
parent 6d63b36c0a
commit 0bf36b98b9
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GPG key ID: B5690EEEBB952194
1 changed files with 6 additions and 6 deletions
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12
quickjs-libc.c
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@ -87,11 +87,11 @@ extern char **environ;
#ifdef USE_WORKER
#include <pthread.h>
#include "quickjs-c-atomics.h"
#endif
#include "cutils.h"
#include "list.h"
#include "quickjs-c-atomics.h"
#include "quickjs-libc.h"
#define MAX_SAFE_INTEGER (((int64_t) 1 << 53) - 1)
@ -167,7 +167,7 @@ typedef struct JSThreadState {
} JSThreadState;
static uint64_t os_pending_signals;
static int (*os_poll_func)(JSContext *ctx);
static _Atomic int can_js_os_poll;
static void js_std_dbuf_init(JSContext *ctx, DynBuf *s)
{
@ -3827,7 +3827,7 @@ static const JSCFunctionListEntry js_os_funcs[] = {
static int js_os_init(JSContext *ctx, JSModuleDef *m)
{
os_poll_func = js_os_poll;
atomic_store(&can_js_os_poll, TRUE);
#ifdef USE_WORKER
{
@ -4058,7 +4058,7 @@ JSValue js_std_loop(JSContext *ctx)
}
}
if (!os_poll_func || os_poll_func(ctx))
if (!atomic_load(&can_js_os_poll) || js_os_poll(ctx))
break;
}
done:
@ -4090,8 +4090,8 @@ JSValue js_std_await(JSContext *ctx, JSValue obj)
if (err < 0) {
js_std_dump_error(ctx1);
}
if (os_poll_func)
os_poll_func(ctx);
if (atomic_load(&can_js_os_poll))
js_os_poll(ctx);
} else {
/* not a promise */
ret = obj;