我正在尝试在 Swift 中实现set_realtime()此OSX 调度指南中的功能。
我被困住了thread_policy_set()。以下导致此编译器错误：
“不能专门化非通用定义”
我还尝试了其他一些事情，但遇到各种类型不匹配错误&policy。任何建议将不胜感激！谢谢！
func set_realtime(period: UInt32, computation: UInt32, constraint: UInt32) -> Bool {
let TIME_CONSTRAINT_POLICY: UInt32 = 2
let TIME_CONSTRAINT_POLICY_COUNT = UInt32(MemoryLayout<thread_time_constraint_policy_data_t>.size / MemoryLayout<integer_t>.size)
let SUCCESS: Int32 = 0
var policy: thread_time_constraint_policy
var ret: Int32
let thread: thread_port_t = pthread_mach_thread_np(pthread_self())
policy.period = period
policy.computation = computation
policy.constraint = constraint
policy.preemptible = 1
ret = withUnsafeMutablePointer<integer_t>(to: &policy, { ptr -> Int32 in
thread_policy_set(thread, TIME_CONSTRAINT_POLICY, ptr, TIME_CONSTRAINT_POLICY_COUNT)
})
if ret …