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Reuse overlapped overhead on windows for something useful.

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This commit is contained in:
Calvin Rose 2023-10-07 11:25:20 -07:00
parent 7bfb17c209
commit fea8242ea7
4 changed files with 9 additions and 9 deletions
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15
src/core/ev.c
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@ -1484,7 +1484,8 @@ void janet_loop1_impl(int has_timeout, JanetTimestamp to) {
}
if (fiber != NULL) {
fiber->ev_in_flight = 0;
fiber->ev_bytes = num_bytes_transfered;
/* System is done with this, we can reused this data */
overlapped->InternalHigh = (ULONG_PTR) num_bytes_transfered;
fiber->ev_callback(fiber, result ? JANET_ASYNC_EVENT_COMPLETE : JANET_ASYNC_EVENT_FAILED);
} else {
janet_free((void *) overlapped);
@ -2163,17 +2164,18 @@ void ev_callback_read(JanetFiber *fiber, JanetAsyncEvent event) {
case JANET_ASYNC_EVENT_FAILED:
case JANET_ASYNC_EVENT_COMPLETE: {
/* Called when read finished */
state->bytes_read += fiber->ev_bytes;
uint32_t ev_bytes = state->overlapped.InternalHigh;
state->bytes_read += ev_bytes;
if (state->bytes_read == 0 && (state->mode != JANET_ASYNC_READMODE_RECVFROM)) {
janet_schedule(fiber, janet_wrap_nil());
janet_async_end(fiber);
return;
}
janet_buffer_push_bytes(state->buf, state->chunk_buf, fiber->ev_bytes);
state->bytes_left -= fiber->ev_bytes;
janet_buffer_push_bytes(state->buf, state->chunk_buf, ev_bytes);
state->bytes_left -= ev_bytes;
if (state->bytes_left == 0 || !state->is_chunk || fiber->ev_bytes == 0) {
if (state->bytes_left == 0 || !state->is_chunk || ev_bytes == 0) {
Janet resume_val;
#ifdef JANET_NET
if (state->mode == JANET_ASYNC_READMODE_RECVFROM) {
@ -2412,7 +2414,8 @@ void ev_callback_write(JanetFiber *fiber, JanetAsyncEvent event) {
case JANET_ASYNC_EVENT_FAILED:
case JANET_ASYNC_EVENT_COMPLETE: {
/* Called when write finished */
if (fiber->ev_bytes == 0 && (state->mode != JANET_ASYNC_WRITEMODE_SENDTO)) {
uint32_t ev_bytes = state->overlapped.InternalHigh;
if (ev_bytes == 0 && (state->mode != JANET_ASYNC_WRITEMODE_SENDTO)) {
janet_cancel(fiber, janet_cstringv("disconnect"));
janet_async_end(fiber);
return;

1
src/core/fiber.c
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@ -43,7 +43,6 @@ static void fiber_reset(JanetFiber *fiber) {
fiber->ev_callback = NULL;
fiber->ev_state = NULL;
fiber->ev_stream = NULL;
fiber->ev_bytes = 0;
fiber->supervisor_channel = NULL;
fiber->ev_in_flight = 0;
#endif

1
src/core/marsh.c
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@ -1051,7 +1051,6 @@ static const uint8_t *unmarshal_one_fiber(
fiber->sched_id = 0;
fiber->supervisor_channel = NULL;
fiber->ev_state = NULL;
fiber->ev_bytes = 0;
fiber->ev_callback = NULL;
fiber->ev_stream = NULL;
fiber->ev_in_flight = 0;

1
src/include/janet.h
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@ -927,7 +927,6 @@ struct JanetFiber {
JanetStream *ev_stream; /* which stream we are waiting on */
void *ev_state; /* Extra data for ev callback state. On windows, first element must be OVERLAPPED. */
void *supervisor_channel; /* Channel to push self to when complete */
uint32_t ev_bytes; /* Number of bytes for completion event */
int ev_in_flight; /* If overlapped operation is in flight */
#endif
};