Yield the CPU of the current thread back to the scheduler.
#include <zircon/syscalls.h> zx_status_t zx_thread_legacy_yield(uint32_t options);
zx_thread_legacy_yield() causes the calling thread to yield the CPU back to the scheduler.
Yield may result in other threads with similar importance running ahead of the current thread, however, the exact behavior is unspecified.
options must be zero.
zx_thread_legacy_yield(uint32_t options) will always return
ZX_OK for zero
options value, will result in