add deadlock mutex package

write to deadlock stderr after closing gocui

more deadlock checking

25 files changed, 1525 insertions, 0 deletions

diff --git a/vendor/github.com/petermattis/goid/.gitignore b/vendor/github.com/petermattis/goid/.gitignore
new file mode 100644
index 000000000..2b9d6b552
--- /dev/null
+++ b/vendor/github.com/petermattis/goid/.gitignore
@@ -0,0 +1,4 @@
+*~
+*.test
+.*.swp
+.DS_Store
diff --git a/vendor/github.com/petermattis/goid/LICENSE b/vendor/github.com/petermattis/goid/LICENSE
new file mode 100644
index 000000000..e06d20818
--- /dev/null
+++ b/vendor/github.com/petermattis/goid/LICENSE
@@ -0,0 +1,202 @@
+Apache License
+                           Version 2.0, January 2004
+                        http://www.apache.org/licenses/
+
+   TERMS AND CONDITIONS FOR USE, REPRODUCTION, AND DISTRIBUTION
+
+   1. Definitions.
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+      may provide additional or different license terms and conditions
+      for use, reproduction, or distribution of Your modifications, or
+      for any such Derivative Works as a whole, provided Your use,
+      reproduction, and distribution of the Work otherwise complies with
+      the conditions stated in this License.
+
+   5. Submission of Contributions. Unless You explicitly state otherwise,
+      any Contribution intentionally submitted for inclusion in the Work
+      by You to the Licensor shall be under the terms and conditions of
+      this License, without any additional terms or conditions.
+      Notwithstanding the above, nothing herein shall supersede or modify
+      the terms of any separate license agreement you may have executed
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+   6. Trademarks. This License does not grant permission to use the trade
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+       http://www.apache.org/licenses/LICENSE-2.0
+
+   Unless required by applicable law or agreed to in writing, software
+   distributed under the License is distributed on an "AS IS" BASIS,
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+
diff --git a/vendor/github.com/petermattis/goid/README.md b/vendor/github.com/petermattis/goid/README.md
new file mode 100644
index 000000000..828fe9528
--- /dev/null
+++ b/vendor/github.com/petermattis/goid/README.md
@@ -0,0 +1,5 @@
+# goid [![Build Status](https://travis-ci.org/petermattis/goid.svg?branch=master)](https://travis-ci.org/petermattis/goid)
+
+Programatically retrieve the current goroutine's ID. See [the CI
+configuration](.travis.yml) for supported Go versions. In addition,
+gccgo 7.2.1 (Go 1.8.3) is supported.
diff --git a/vendor/github.com/petermattis/goid/goid.go b/vendor/github.com/petermattis/goid/goid.go
new file mode 100644
index 000000000..408e61992
--- /dev/null
+++ b/vendor/github.com/petermattis/goid/goid.go
@@ -0,0 +1,35 @@
+// Copyright 2016 Peter Mattis.
+//
+// Licensed under the Apache License, Version 2.0 (the "License");
+// you may not use this file except in compliance with the License.
+// You may obtain a copy of the License at
+//
+//     http://www.apache.org/licenses/LICENSE-2.0
+//
+// Unless required by applicable law or agreed to in writing, software
+// distributed under the License is distributed on an "AS IS" BASIS,
+// WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or
+// implied. See the License for the specific language governing
+// permissions and limitations under the License. See the AUTHORS file
+// for names of contributors.
+
+package goid
+
+import (
+	"bytes"
+	"runtime"
+	"strconv"
+)
+
+func ExtractGID(s []byte) int64 {
+	s = s[len("goroutine "):]
+	s = s[:bytes.IndexByte(s, ' ')]
+	gid, _ := strconv.ParseInt(string(s), 10, 64)
+	return gid
+}
+
+// Parse the goid from runtime.Stack() output. Slow, but it works.
+func getSlow() int64 {
+	var buf [64]byte
+	return ExtractGID(buf[:runtime.Stack(buf[:], false)])
+}
diff --git a/vendor/github.com/petermattis/goid/goid_gccgo.go b/vendor/github.com/petermattis/goid/goid_gccgo.go
new file mode 100644
index 000000000..e655e0687
--- /dev/null
+++ b/vendor/github.com/petermattis/goid/goid_gccgo.go
@@ -0,0 +1,25 @@
+// Copyright 2018 Peter Mattis.
+//
+// Licensed under the Apache License, Version 2.0 (the "License");
+// you may not use this file except in compliance with the License.
+// You may obtain a copy of the License at
+//
+//     http://www.apache.org/licenses/LICENSE-2.0
+//
+// Unless required by applicable law or agreed to in writing, software
+// distributed under the License is distributed on an "AS IS" BASIS,
+// WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or
+// implied. See the License for the specific language governing
+// permissions and limitations under the License. See the AUTHORS file
+// for names of contributors.
+
+// +build gccgo
+
+package goid
+
+//extern runtime.getg
+func getg() *g
+
+func Get() int64 {
+	return getg().goid
+}
diff --git a/vendor/github.com/petermattis/goid/goid_go1.3.c b/vendor/github.com/petermattis/goid/goid_go1.3.c
new file mode 100644
index 000000000..2e3f7ab79
--- /dev/null
+++ b/vendor/github.com/petermattis/goid/goid_go1.3.c
@@ -0,0 +1,23 @@
+// Copyright 2015 Peter Mattis.
+//
+// Licensed under the Apache License, Version 2.0 (the "License");
+// you may not use this file except in compliance with the License.
+// You may obtain a copy of the License at
+//
+//     http://www.apache.org/licenses/LICENSE-2.0
+//
+// Unless required by applicable law or agreed to in writing, software
+// distributed under the License is distributed on an "AS IS" BASIS,
+// WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or
+// implied. See the License for the specific language governing
+// permissions and limitations under the License. See the AUTHORS file
+// for names of contributors.
+
+// +build !go1.4
+
+#include <runtime.h>
+
+void ·Get(int64 ret) {
+  ret = g->goid;
+  USED(&ret);
+}
diff --git a/vendor/github.com/petermattis/goid/goid_go1.3.go b/vendor/github.com/petermattis/goid/goid_go1.3.go
new file mode 100644
index 000000000..9202099e8
--- /dev/null
+++ b/vendor/github.com/petermattis/goid/goid_go1.3.go
@@ -0,0 +1,21 @@
+// Copyright 2015 Peter Mattis.
+//
+// Licensed under the Apache License, Version 2.0 (the "License");
+// you may not use this file except in compliance with the License.
+// You may obtain a copy of the License at
+//
+//     http://www.apache.org/licenses/LICENSE-2.0
+//
+// Unless required by applicable law or agreed to in writing, software
+// distributed under the License is distributed on an "AS IS" BASIS,
+// WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or
+// implied. See the License for the specific language governing
+// permissions and limitations under the License. See the AUTHORS file
+// for names of contributors.
+
+// +build !go1.4
+
+package goid
+
+// Get returns the id of the current goroutine.
+func Get() int64
diff --git a/vendor/github.com/petermattis/goid/goid_go1.4.go b/vendor/github.com/petermattis/goid/goid_go1.4.go
new file mode 100644
index 000000000..ec7fc52d4
--- /dev/null
+++ b/vendor/github.com/petermattis/goid/goid_go1.4.go
@@ -0,0 +1,34 @@
+// Copyright 2015 Peter Mattis.
+//
+// Licensed under the Apache License, Version 2.0 (the "License");
+// you may not use this file except in compliance with the License.
+// You may obtain a copy of the License at
+//
+//     http://www.apache.org/licenses/LICENSE-2.0
+//
+// Unless required by applicable law or agreed to in writing, software
+// distributed under the License is distributed on an "AS IS" BASIS,
+// WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or
+// implied. See the License for the specific language governing
+// permissions and limitations under the License. See the AUTHORS file
+// for names of contributors.
+
+// +build go1.4,!go1.5
+
+package goid
+
+import "unsafe"
+
+var pointerSize = unsafe.Sizeof(uintptr(0))
+
+// Backdoor access to runtime·getg().
+func getg() uintptr // in goid_go1.4.s
+
+// Get returns the id of the current goroutine.
+func Get() int64 {
+	// The goid is the 16th field in the G struct where each field is a
+	// pointer, uintptr or padded to that size. See runtime.h from the
+	// Go sources. I'm not aware of a cleaner way to determine the
+	// offset.
+	return *(*int64)(unsafe.Pointer(getg() + 16*pointerSize))
+}
diff --git a/vendor/github.com/petermattis/goid/goid_go1.4.s b/vendor/github.com/petermattis/goid/goid_go1.4.s
new file mode 100644
index 000000000..21a07d662
--- /dev/null
+++ b/vendor/github.com/petermattis/goid/goid_go1.4.s
@@ -0,0 +1,18 @@
+// Copyright 2014 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.
+
+// Assembly to get into package runtime without using exported symbols.
+// See https://github.com/golang/go/blob/release-branch.go1.4/misc/cgo/test/backdoor/thunk.s
+
+// +build amd64 amd64p32 arm 386
+// +build go1.4,!go1.5
+
+#include "textflag.h"
+
+#ifdef GOARCH_arm
+#define JMP B
+#endif
+
+TEXT ·getg(SB),NOSPLIT,$0-0
+	JMP	runtime·getg(SB)
diff --git a/vendor/github.com/petermattis/goid/goid_go1.5_amd64.go b/vendor/github.com/petermattis/goid/goid_go1.5_amd64.go
new file mode 100644
index 000000000..269abb3f5
--- /dev/null
+++ b/vendor/github.com/petermattis/goid/goid_go1.5_amd64.go
@@ -0,0 +1,21 @@
+// Copyright 2016 Peter Mattis.
+//
+// Licensed under the Apache License, Version 2.0 (the "License");
+// you may not use this file except in compliance with the License.
+// You may obtain a copy of the License at
+//
+//     http://www.apache.org/licenses/LICENSE-2.0
+//
+// Unless required by applicable law or agreed to in writing, software
+// distributed under the License is distributed on an "AS IS" BASIS,
+// WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or
+// implied. See the License for the specific language governing
+// permissions and limitations under the License. See the AUTHORS file
+// for names of contributors.
+
+// +build amd64 amd64p32
+// +build gc,go1.5
+
+package goid
+
+func Get() int64
diff --git a/vendor/github.com/petermattis/goid/goid_go1.5_amd64.s b/vendor/github.com/petermattis/goid/goid_go1.5_amd64.s
new file mode 100644
index 000000000..416665dd9
--- /dev/null
+++ b/vendor/github.com/petermattis/goid/goid_go1.5_amd64.s
@@ -0,0 +1,29 @@
+// Copyright 2016 Peter Mattis.
+//
+// Licensed under the Apache License, Version 2.0 (the "License");
+// you may not use this file except in compliance with the License.
+// You may obtain a copy of the License at
+//
+//     http://www.apache.org/licenses/LICENSE-2.0
+//
+// Unless required by applicable law or agreed to in writing, software
+// distributed under the License is distributed on an "AS IS" BASIS,
+// WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or
+// implied. See the License for the specific language governing
+// permissions and limitations under the License. See the AUTHORS file
+// for names of contributors.
+
+// Assembly to mimic runtime.getg.
+
+// +build amd64 amd64p32
+// +build gc,go1.5
+
+#include "go_asm.h"
+#include "textflag.h"
+
+// func Get() int64
+TEXT ·Get(SB),NOSPLIT,$0-8
+	MOVQ (TLS), R14
+	MOVQ g_goid(R14), R13
+	MOVQ R13, ret+0(FP)
+	RET
diff --git a/vendor/github.com/petermattis/goid/goid_go1.5_arm.go b/vendor/github.com/petermattis/goid/goid_go1.5_arm.go
new file mode 100644
index 000000000..97fb81659
--- /dev/null
+++ b/vendor/github.com/petermattis/goid/goid_go1.5_arm.go
@@ -0,0 +1,26 @@
+// Copyright 2016 Peter Mattis.
+//
+// Licensed under the Apache License, Version 2.0 (the "License");
+// you may not use this file except in compliance with the License.
+// You may obtain a copy of the License at
+//
+//     http://www.apache.org/licenses/LICENSE-2.0
+//
+// Unless required by applicable law or agreed to in writing, software
+// distributed under the License is distributed on an "AS IS" BASIS,
+// WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or
+// implied. See the License for the specific language governing
+// permissions and limitations under the License. See the AUTHORS file
+// for names of contributors.
+
+// +build arm
+// +build gc,go1.5
+
+package goid
+
+// Backdoor access to runtime·getg().
+func getg() *g // in goid_go1.5plus.s
+
+func Get() int64 {
+	return getg().goid
+}
diff --git a/vendor/github.com/petermattis/goid/goid_go1.5_arm.s b/vendor/github.com/petermattis/goid/goid_go1.5_arm.s
new file mode 100644
index 000000000..edab4d80f
--- /dev/null
+++ b/vendor/github.com/petermattis/goid/goid_go1.5_arm.s
@@ -0,0 +1,27 @@
+// Copyright 2016 Peter Mattis.
+//
+// Licensed under the Apache License, Version 2.0 (the "License");
+// you may not use this file except in compliance with the License.
+// You may obtain a copy of the License at
+//
+//     http://www.apache.org/licenses/LICENSE-2.0
+//
+// Unless required by applicable law or agreed to in writing, software
+// distributed under the License is distributed on an "AS IS" BASIS,
+// WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or
+// implied. See the License for the specific language governing
+// permissions and limitations under the License. See the AUTHORS file
+// for names of contributors.
+
+// Assembly to mimic runtime.getg.
+// This should work on arm64 as well, but it hasn't been tested.
+
+// +build arm
+// +build gc,go1.5
+
+#include "textflag.h"
+
+// func getg() *g
+TEXT ·getg(SB),NOSPLIT,$0-8
+	MOVW g, ret+0(FP)
+	RET
diff --git a/vendor/github.com/petermattis/goid/goid_slow.go b/vendor/github.com/petermattis/goid/goid_slow.go
new file mode 100644
index 000000000..d2d37650a
--- /dev/null
+++ b/vendor/github.com/petermattis/goid/goid_slow.go
@@ -0,0 +1,23 @@
+// Copyright 2016 Peter Mattis.
+//
+// Licensed under the Apache License, Version 2.0 (the "License");
+// you may not use this file except in compliance with the License.
+// You may obtain a copy of the License at
+//
+//     http://www.apache.org/licenses/LICENSE-2.0
+//
+// Unless required by applicable law or agreed to in writing, software
+// distributed under the License is distributed on an "AS IS" BASIS,
+// WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or
+// implied. See the License for the specific language governing
+// permissions and limitations under the License. See the AUTHORS file
+// for names of contributors.
+
+// +build go1.4,!go1.5,!amd64,!amd64p32,!arm,!386 go1.5,!go1.6,!amd64,!amd64p32,!arm go1.6,!amd64,!amd64p32,!arm go1.9,!amd64,!amd64p32,!arm
+
+package goid
+
+// Get returns the id of the current goroutine.
+func Get() int64 {
+	return getSlow()
+}
diff --git a/vendor/github.com/petermattis/goid/runtime_gccgo_go1.8.go b/vendor/github.com/petermattis/goid/runtime_gccgo_go1.8.go
new file mode 100644
index 000000000..42c12bcc2
--- /dev/null
+++ b/vendor/github.com/petermattis/goid/runtime_gccgo_go1.8.go
@@ -0,0 +1,16 @@
+// +build gccgo,go1.8
+
+package goid
+
+// https://github.com/gcc-mirror/gcc/blob/gcc-7-branch/libgo/go/runtime/runtime2.go#L329-L422
+
+type g struct {
+	_panic       uintptr
+	_defer       uintptr
+	m            uintptr
+	syscallsp    uintptr
+	syscallpc    uintptr
+	param        uintptr
+	atomicstatus uint32
+	goid         int64 // Here it is!
+}
diff --git a/vendor/github.com/petermattis/goid/runtime_go1.5.go b/vendor/github.com/petermattis/goid/runtime_go1.5.go
new file mode 100644
index 000000000..e1279a017
--- /dev/null
+++ b/vendor/github.com/petermattis/goid/runtime_go1.5.go
@@ -0,0 +1,56 @@
+// Copyright 2016 Peter Mattis.
+//
+// Licensed under the Apache License, Version 2.0 (the "License");
+// you may not use this file except in compliance with the License.
+// You may obtain a copy of the License at
+//
+//     http://www.apache.org/licenses/LICENSE-2.0
+//
+// Unless required by applicable law or agreed to in writing, software
+// distributed under the License is distributed on an "AS IS" BASIS,
+// WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or
+// implied. See the License for the specific language governing
+// permissions and limitations under the License. See the AUTHORS file
+// for names of contributors.
+
+// +build go1.5,!go1.6
+
+package goid
+
+// Just enough of the structs from runtime/runtime2.go to get the offset to goid.
+// See https://github.com/golang/go/blob/release-branch.go1.5/src/runtime/runtime2.go
+
+type stack struct {
+	lo uintptr
+	hi uintptr
+}
+
+type gobuf struct {
+	sp   uintptr
+	pc   uintptr
+	g    uintptr
+	ctxt uintptr
+	ret  uintptr
+	lr   uintptr
+	bp   uintptr
+}
+
+type g struct {
+	stack       stack
+	stackguard0 uintptr
+	stackguard1 uintptr
+
+	_panic       uintptr
+	_defer       uintptr
+	m            uintptr
+	stackAlloc   uintptr
+	sched        gobuf
+	syscallsp    uintptr
+	syscallpc    uintptr
+	stkbar       []uintptr
+	stkbarPos    uintptr
+	param        uintptr
+	atomicstatus uint32
+	stackLock    uint32
+	goid         int64 // Here it