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feat(sockevent): support emscripten #145

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Merged
cloudwu merged 1 commit into from
Oct 17, 2025
Merged

feat(sockevent): support emscripten #145

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37 changes: 37 additions & 0 deletions src/sockevent.h
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Original file line number Diff line number Diff line change
Expand Up @@ -3,6 +3,13 @@

#include <string.h>

#if defined(__EMSCRIPTEN__)
#include <emscripten/threading.h>
#include <emscripten/atomic.h>
#include <math.h>
#include <errno.h>
#endif

#if defined(_MSC_VER) || defined(__MINGW32__) || defined(__MINGW64__)

#include <winsock2.h>
Expand Down Expand Up @@ -57,11 +64,18 @@ sockevent_init(struct sockevent *e) {
e->pipe[0] = socket_invalid;
e->pipe[1] = socket_invalid;

#if defined(__EMSCRIPTEN__)
atomic_init(&e->e, 0);
#else
atomic_int_init(&e->e, 0);
#endif
}

static inline void
sockevent_close(struct sockevent *e) {
#if defined(__EMSCRIPTEN__)
atomic_store_explicit(&e->e, 0, memory_order_relaxed);
#else
if (e->pipe[0] != socket_invalid) {
closesocket(e->pipe[0]);
e->pipe[0] = socket_invalid;
Expand All @@ -70,10 +84,15 @@ sockevent_close(struct sockevent *e) {
closesocket(e->pipe[1]);
e->pipe[1] = socket_invalid;
}
#endif
}

static inline int
sockevent_open(struct sockevent *e) {
#if defined(__EMSCRIPTEN__)
atomic_store_explicit(&e->e, 0, memory_order_relaxed);
return 0;
#else
if (e->pipe[0] != socket_invalid)
return 0;
socket_t fd = socket(AF_INET6, SOCK_STREAM, 0);
Expand Down Expand Up @@ -131,10 +150,16 @@ sockevent_open(struct sockevent *e) {
closesocket(fd);
sockevent_close(e);
return -1;
#endif
}

static inline void
sockevent_trigger(struct sockevent *e) {
#if defined(__EMSCRIPTEN__)
if (atomic_exchange_explicit(&e->e, 1, memory_order_release) == 0) {
emscripten_futex_wake((volatile void *)&e->e, 1);
}
#else
if (e->pipe[0] == socket_invalid)
return;
if (atomic_int_load(&e->e))
Expand All @@ -147,14 +172,26 @@ sockevent_trigger(struct sockevent *e) {
#endif
char tmp[1] = { 0 };
send(e->pipe[1], tmp, sizeof(tmp), flags);
#endif
}

static inline int
sockevent_wait(struct sockevent *e) {
#if defined(__EMSCRIPTEN__)
for (;;) {
if (atomic_exchange_explicit(&e->e, 0, memory_order_acquire) != 0) {
return 1;
}
int rc = emscripten_futex_wait((volatile void *)&e->e, 0, INFINITY);
if (rc != 0 && rc != -EWOULDBLOCK)
return rc;
}
#else
char tmp[128];
int r = recv(e->pipe[0], tmp, sizeof(tmp), 0);
atomic_int_store(&e->e, 0);
return r;
#endif
}

static inline socket_t
Expand Down