Create an event.
#include <zircon/syscalls.h> zx_status_t zx_event_create(uint32_t options, zx_handle_t* out);
zx_event_create() creates an event, which is an object that is signalable. That
is, its ZX_USER_SIGNAL_n (where n is 0 through 7) signals can be
The newly-created handle will have the basic rights plus ZX_RIGHT_SIGNAL.
zx_event_create() returns ZX_OK and a valid event handle (via out) on success.
On failure, an error value is returned.
ZX_ERR_INVALID_ARGS out is an invalid pointer, or options is nonzero.
ZX_ERR_NO_MEMORY Failure due to lack of memory. There is no good way for userspace to handle this (unlikely) error. In a future build this error will no longer occur.
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