fix(AbortSignal/fetch) fix AbortSignal.timeout, fetch lock behavior and fetch errors #6390
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cirospaciari
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| struct us_internal_callback_t *internal_cb = (struct us_internal_callback_t *) timer; | ||
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| struct kevent64_s event; | ||
| EV_SET64(&event, (uint64_t) (void*) internal_cb, EVFILT_TIMER, EV_DELETE, 0, 0, (uint64_t)internal_cb, 0, 0); | ||
| kevent64(internal_cb->loop->fd, &event, 1, NULL, 0, 0, NULL); | ||
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| /* (regular) sockets are the only polls which are not freed immediately */ | ||
| us_poll_free((struct us_poll_t *) timer, internal_cb->loop); | ||
| if(fallthrough){ | ||
| us_free(timer); |
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isn't there a scenario where:
- Timer is scheduled to run in the next tick
- Tick happens, but before timer happens, the timer is cancelled
- Timer is freed
- Callback for timer runs after the timer is freed, which becomes a use-after-free
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today we call us_poll_free with just do:
void us_poll_free(struct us_poll_t *p, struct us_loop_t *loop) {
loop->num_polls--;
us_free(p);
}so is safe to assume that we are not breaking any behavior only avoiding loop->num_polls--; because on fallthrough: true we dont increment num_pools, But will check this scenario.
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❌ @cirospaciari 7 files with test failures on bun-darwin-aarch64:
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❌ @cirospaciari 6 files with test failures on linux-x64-baseline:
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❌ @cirospaciari 5 files with test failures on linux-x64:
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❌ @cirospaciari 10 files with test failures on bun-darwin-x64-baseline:
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What does this PR do?
This fix fetch behavior on error cases, fix HTTP destroying too early causing missing parts/events not to be emitted, fix AbortSignal.timeout, fix proper closing/ending off fetch when aborted, and also fix the state of readable streams to be used not only empty.
Fix #6366
How did you verify your code works?
I wrote automated tests