1 files changed, 63 insertions, 0 deletions
diff --git a/src/sync/runtime.go b/src/sync/runtime.go
new file mode 100644
index 0000000..5a90813
--- /dev/null
+++ b/src/sync/runtime.go
@@ -0,0 +1,63 @@
+// Copyright 2012 The Go Authors. All rights reserved.
+// Use of this source code is governed by a BSD-style
+// license that can be found in the LICENSE file.
+
+package sync
+
+import "unsafe"
+
+// defined in package runtime
+
+// Semacquire waits until *s > 0 and then atomically decrements it.
+// It is intended as a simple sleep primitive for use by the synchronization
+// library and should not be used directly.
+func runtime_Semacquire(s *uint32)
+
+// Semacquire(RW)Mutex(R) is like Semacquire, but for profiling contended
+// Mutexes and RWMutexes.
+// If lifo is true, queue waiter at the head of wait queue.
+// skipframes is the number of frames to omit during tracing, counting from
+// runtime_SemacquireMutex's caller.
+// The different forms of this function just tell the runtime how to present
+// the reason for waiting in a backtrace, and is used to compute some metrics.
+// Otherwise they're functionally identical.
+func runtime_SemacquireMutex(s *uint32, lifo bool, skipframes int)
+func runtime_SemacquireRWMutexR(s *uint32, lifo bool, skipframes int)
+func runtime_SemacquireRWMutex(s *uint32, lifo bool, skipframes int)
+
+// Semrelease atomically increments *s and notifies a waiting goroutine
+// if one is blocked in Semacquire.
+// It is intended as a simple wakeup primitive for use by the synchronization
+// library and should not be used directly.
+// If handoff is true, pass count directly to the first waiter.
+// skipframes is the number of frames to omit during tracing, counting from
+// runtime_Semrelease's caller.
+func runtime_Semrelease(s *uint32, handoff bool, skipframes int)
+
+// See runtime/sema.go for documentation.
+func runtime_notifyListAdd(l *notifyList) uint32
+
+// See runtime/sema.go for documentation.
+func runtime_notifyListWait(l *notifyList, t uint32)
+
+// See runtime/sema.go for documentation.
+func runtime_notifyListNotifyAll(l *notifyList)
+
+// See runtime/sema.go for documentation.
+func runtime_notifyListNotifyOne(l *notifyList)
+
+// Ensure that sync and runtime agree on size of notifyList.
+func runtime_notifyListCheck(size uintptr)
+func init() {
+	var n notifyList
+	runtime_notifyListCheck(unsafe.Sizeof(n))
+}
+
+// Active spinning runtime support.
+// runtime_canSpin reports whether spinning makes sense at the moment.
+func runtime_canSpin(i int) bool
+
+// runtime_doSpin does active spinning.
+func runtime_doSpin()
+
+func runtime_nanotime() int64