1 files changed, 66 insertions, 0 deletions
diff --git a/src/runtime/coverage/coverage.go b/src/runtime/coverage/coverage.go
new file mode 100644
index 0000000000..6b99a0bce6
--- /dev/null
+++ b/src/runtime/coverage/coverage.go
@@ -0,0 +1,66 @@
+// Copyright 2022 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 coverage
+
+import (
+	"internal/coverage/cfile"
+	"io"
+)
+
+// initHook is invoked from main.init in programs built with -cover.
+// The call is emitted by the compiler.
+func initHook(istest bool) {
+	cfile.InitHook(istest)
+}
+
+// WriteMetaDir writes a coverage meta-data file for the currently
+// running program to the directory specified in 'dir'. An error will
+// be returned if the operation can't be completed successfully (for
+// example, if the currently running program was not built with
+// "-cover", or if the directory does not exist).
+func WriteMetaDir(dir string) error {
+	return cfile.WriteMetaDir(dir)
+}
+
+// WriteMeta writes the meta-data content (the payload that would
+// normally be emitted to a meta-data file) for the currently running
+// program to the writer 'w'. An error will be returned if the
+// operation can't be completed successfully (for example, if the
+// currently running program was not built with "-cover", or if a
+// write fails).
+func WriteMeta(w io.Writer) error {
+	return cfile.WriteMeta(w)
+}
+
+// WriteCountersDir writes a coverage counter-data file for the
+// currently running program to the directory specified in 'dir'. An
+// error will be returned if the operation can't be completed
+// successfully (for example, if the currently running program was not
+// built with "-cover", or if the directory does not exist). The
+// counter data written will be a snapshot taken at the point of the
+// call.
+func WriteCountersDir(dir string) error {
+	return cfile.WriteCountersDir(dir)
+}
+
+// WriteCounters writes coverage counter-data content for the
+// currently running program to the writer 'w'. An error will be
+// returned if the operation can't be completed successfully (for
+// example, if the currently running program was not built with
+// "-cover", or if a write fails). The counter data written will be a
+// snapshot taken at the point of the invocation.
+func WriteCounters(w io.Writer) error {
+	return cfile.WriteCounters(w)
+}
+
+// ClearCounters clears/resets all coverage counter variables in the
+// currently running program. It returns an error if the program in
+// question was not built with the "-cover" flag. Clearing of coverage
+// counters is also not supported for programs not using atomic
+// counter mode (see more detailed comments below for the rationale
+// here).
+func ClearCounters() error {
+	return cfile.ClearCounters()
+}