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Allow adding an event callback

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cozis
2024-04-12 00:00:27 +02:00
parent 86611c7e3b
commit 176fa2d02b
2 changed files with 68 additions and 24 deletions
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io.c
+42 -6
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@@ -198,6 +198,7 @@ static void clear_res(struct io_resource *res)
{
res->type = IO_RES_VOID;
res->pending = 0;
res->callback = NULL;
#if IO_PLATFORM_WINDOWS
res->os_handle = INVALID_HANDLE_VALUE;
@@ -818,8 +819,8 @@ op_from_ov(struct io_os_overlap *ov)
#if IO_PLATFORM_WINDOWS
static void
io_wait_windows(struct io_context *ioc,
struct io_event *ev)
io_wait_internal_windows(struct io_context *ioc,
struct io_event *ev)
{
int timeout = -1;
@@ -928,8 +929,8 @@ io_wait_windows(struct io_context *ioc,
#if IO_PLATFORM_LINUX
static void
io_wait_linux(struct io_context *ioc,
struct io_event *ev)
io_wait_internal_linux(struct io_context *ioc,
struct io_event *ev)
{
/* --- Read barrier --- */
unsigned int head = atomic_load(ioc->completions.head);
@@ -984,8 +985,9 @@ io_wait_linux(struct io_context *ioc,
}
#endif
void io_wait(struct io_context *ioc,
struct io_event *ev)
static void
io_wait_internal(struct io_context *ioc,
struct io_event *ev)
{
#if IO_PLATFORM_WINDOWS
io_wait_windows(ioc, ev);
@@ -995,3 +997,37 @@ void io_wait(struct io_context *ioc,
io_wait_linux(ioc, ev);
#endif
}
void io_wait(struct io_context *ioc,
struct io_event *ev)
{
for (;;) {
io_wait_internal(ioc, ev);
if (ev->handle == IO_INVALID)
break;
assert(ev->handle != IO_INVALID);
struct io_resource *res;
res = res_from_handle(ioc, ev->handle);
assert(res);
if (res->callback == NULL)
break;
res->callback(*ev);
}
}
void io_set_callback(struct io_context *ioc,
io_handle handle,
io_callback callback)
{
struct io_resource *res;
res = res_from_handle(ioc, handle);
if (res == NULL)
return;
res->callback = callback;
}