feat: support go1.26

.github/workflows/coverage.yaml

@@ -13,7 +13,7 @@ jobs:
       - name: Set up Go
         uses: actions/setup-go@v5
         with:
-          go-version: "1.25"
+          go-version: "1.26"
       - name: Unit Test
         run: go test -gcflags="all=-l -N" -coverprofile=coverage.txt -timeout 30s -count 1 ./...
       - name: Upload results to Codecov

.github/workflows/tests.yml

@@ -39,7 +39,13 @@ jobs:
   unit-benchmark-test-no-race: # some go version -race has fatal issues
     strategy:
       matrix:
-        go: ["1.14", "1.15", "1.16", "1.17"]
+        go: [
+          "1.14", 
+          "1.15", 
+          "1.16", 
+          "1.17",
+          "1.26" # go1.26 has fatal issues with -race 
+          ]
         os: [linux] # should be [ macOS, linux, windows ], but currently we don't have macOS and windows runners
         arch: [X64, ARM64]
         exclude:
@@ -65,7 +71,7 @@ jobs:
       - name: Set up Go
         uses: actions/setup-go@v3
         with:
-          go-version: "1.25"
+          go-version: "1.26"
       - name: Unit Test
         run: MOCKEY_DEBUG=true go test -gcflags="all=-l -N" -timeout 30s -count 1 -tags mockey_disable_ss,mockey_disable_stw ./...
       - name: Benchmark

internal/fn/analyzer_1_20.go

@@ -1,5 +1,5 @@
-//go:build go1.20 && !go1.26
-// +build go1.20,!go1.26
+//go:build go1.20 && !go1.27
+// +build go1.20,!go1.27
 
 /*
  * Copyright 2022 ByteDance Inc.

internal/fn/name_analyzer_1_20.go

@@ -1,5 +1,5 @@
-//go:build go1.20 && !go1.26
-// +build go1.20,!go1.26
+//go:build go1.20 && !go1.27
+// +build go1.20,!go1.27
 
 /*
  * Copyright 2022 ByteDance Inc.

internal/monkey/inst/generic_extra.go

@@ -20,46 +20,42 @@ import (
 	_ "unsafe"
 )
 
-//go:linkname duffcopy runtime.duffcopy
-func duffcopy()
+var (
+	duffcopy, duffzero         func()
+	duffcopyStart, duffcopyEnd uintptr
+	duffzeroStart, duffzeroEnd uintptr
 
-//go:linkname duffzero runtime.duffzero
-func duffzero()
-
-var duffcopyStart, duffcopyEnd, duffzeroStart, duffzeroEnd uintptr
+	proxyCallRace = map[uintptr]string{}
+)
 
 func init() {
-	duffcopyStart, duffcopyEnd = calcFnAddrRange("duffcopy", duffcopy)
-	duffzeroStart, duffzeroEnd = calcFnAddrRange("duffzero", duffzero)
-}
+	initDuffFunc()
 
-// proxyCallRace exclude functions used for race check in unit test
-//
-// If we use '-race' in test command, golang may use 'racefuncenter' and 'racefuncexit' in generic
-// function's proxy, which is toxic for us to find the original generic function implementation.
-//
-// So we need to exclude them. We simply exclude most of race functions defined in runtime.
-var proxyCallRace = map[uintptr]string{}
+	if duffcopy != nil {
+		duffcopyStart, duffcopyEnd = calcFnAddrRange("duffcopy", duffcopy)
+	}
+	if duffzero != nil {
+		duffzeroStart, duffzeroEnd = calcFnAddrRange("duffzero", duffzero)
+	}
+}
 
 // isGenericProxyCallExtra checks if generic function's proxy called an extra internal function
 // We check duffcopy/duffzero for passing huge params/returns and race-functions for -race option
 func isGenericProxyCallExtra(addr uintptr) (bool, string) {
-	/*
-		When function argument size is too big, golang will use duff-copy
-		to get better performance. Thus, we will see more call-instruction
-		in asm code.
-		For example, assume struct type like this:
-			```
-			type Large15 struct _, _, _, _, _, _, _, _, _, _, _, _, _, _, _, _ string}
-			```
-		when we use `Large15` as generic function's argument or return types,
-		the wrapper `function[Large15]` will call `duffcopy` and `duffzero`
-		before passing arguments and after receiving returns.
+	// When function argument size is too big, golang will use duff-copy
+	// to get better performance. Thus, we will see more call-instruction
+	// in asm code.
+	// For example, assume struct type like this:
+	// 	```
+	// 	type Large15 struct _, _, _, _, _, _, _, _, _, _, _, _, _, _, _, _ string}
+	// 	```
+	// when we use `Large15` as generic function's argument or return types,
+	// the wrapper `function[Large15]` will call `duffcopy` and `duffzero`
+	// before passing arguments and after receiving returns.
 
-		Notice that `duff` functions are very special, they are always called
-		in the middle of function body(not at beginning). So we should check
-		the `call` instruction's target address with a range.
-	*/
+	// Notice that `duff` functions are very special, they are always called
+	// in the middle of function body(not at beginning). So we should check
+	// the `call` instruction's target address with a range.
 	if addr >= duffcopyStart && addr <= duffcopyEnd {
 		return true, "diffcopy"
 	}
@@ -68,6 +64,12 @@ func isGenericProxyCallExtra(addr uintptr) (bool, string) {
 		return true, "duffzero"
 	}
 
+	// proxyCallRace exclude functions used for race check in unit test
+	//
+	// If we use '-race' in test command, golang may use 'racefuncenter' and 'racefuncexit' in generic
+	// function's proxy, which is toxic for us to find the original generic function implementation.
+	//
+	// So we need to exclude them. We simply exclude most of race functions defined in runtime.
 	if name, ok := proxyCallRace[addr]; ok {
 		return true, name
 	}

internal/monkey/inst/generic_extra_1_26.go

@@ -0,0 +1,36 @@
+//go:build go1.26 && !go1.27
+// +build go1.26,!go1.27
+
+/*
+ * Copyright 2022 ByteDance Inc.
+ *
+ * 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.
+ */
+
+package inst
+
+import (
+	"reflect"
+
+	"github.com/bytedance/mockey/internal/monkey/fn"
+	"github.com/bytedance/mockey/internal/monkey/linkname"
+)
+
+func initDuffFunc() {
+	if duffcopyPC := linkname.FuncPCForName("runtime.duffcopy"); duffcopyPC > 0 {
+		duffcopy = fn.MakeFunc(reflect.TypeOf(duffcopy), duffcopyPC).Interface().(func())
+	}
+	if duffzeroPC := linkname.FuncPCForName("runtime.duffzero"); duffzeroPC > 0 {
+		duffzero = fn.MakeFunc(reflect.TypeOf(duffzero), duffzeroPC).Interface().(func())
+	}
+}

internal/monkey/inst/generic_extra_below_1_26.go

@@ -0,0 +1,35 @@
+//go:build !go1.26
+// +build !go1.26
+
+/*
+ * Copyright 2022 ByteDance Inc.
+ *
+ * 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.
+ */
+
+package inst
+
+import (
+	_ "unsafe"
+)
+
+func initDuffFunc() {
+	duffcopy = duffcopy0
+	duffzero = duffzero0
+}
+
+//go:linkname duffcopy0 runtime.duffcopy
+func duffcopy0()
+
+//go:linkname duffzero0 runtime.duffzero
+func duffzero0()

internal/monkey/linkname/linkname.go

@@ -1,5 +1,5 @@
-//go:build !go1.26
-// +build !go1.26
+//go:build !go1.27
+// +build !go1.27
 
 /*
  * Copyright 2022 ByteDance Inc.

internal/monkey/stw/stw_1_23.go

@@ -1,5 +1,5 @@
-//go:build go1.23 && !go1.26
-// +build go1.23,!go1.26
+//go:build go1.23 && !go1.27
+// +build go1.23,!go1.27
 
 /*
  * Copyright 2022 ByteDance Inc.

internal/monkey/sysmon/schedt_1_26.go

@@ -0,0 +1,24 @@
+//go:build go1.26 && !go1.27
+// +build go1.26,!go1.27
+
+/*
+ * Copyright 2022 ByteDance Inc.
+ *
+ * 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.
+ */
+
+package sysmon
+
+const (
+	sysmonLockOffset = 352
+)

internal/monkey/sysmon/suspend_1_23.go

@@ -1,5 +1,5 @@
-//go:build !mockey_disable_ss && go1.23 && !go1.26
-// +build !mockey_disable_ss,go1.23,!go1.26
+//go:build !mockey_disable_ss && go1.23 && !go1.27
+// +build !mockey_disable_ss,go1.23,!go1.27
 
 /*
  * Copyright 2022 ByteDance Inc.

internal/monkey/sysmon/suspend_1_23_amd64.s

@@ -1,5 +1,5 @@
-//go:build !mockey_disable_ss && go1.23 && !go1.26
-// +build !mockey_disable_ss,go1.23,!go1.26
+//go:build !mockey_disable_ss && go1.23 && !go1.27
+// +build !mockey_disable_ss,go1.23,!go1.27
 
 /*
  * Copyright 2022 ByteDance Inc.

internal/monkey/sysmon/suspend_1_23_arm64.s

@@ -1,5 +1,5 @@
-//go:build !mockey_disable_ss && go1.23 && !go1.26
-// +build !mockey_disable_ss,go1.23,!go1.26
+//go:build !mockey_disable_ss && go1.23 && !go1.27
+// +build !mockey_disable_ss,go1.23,!go1.27
 
 /*
  * Copyright 2022 ByteDance Inc.

internal/tool/goroutine_1_25.go

@@ -1,5 +1,5 @@
-//go:build go1.25 && !go1.26
-// +build go1.25,!go1.26
+//go:build go1.25 && !go1.27
+// +build go1.25,!go1.27
 
 /*
  * Copyright 2022 ByteDance Inc.

internal/unsafereflect/name_1_17.go

@@ -1,5 +1,5 @@
-//go:build go1.17 && !go1.26
-// +build go1.17,!go1.26
+//go:build go1.17 && !go1.27
+// +build go1.17,!go1.27
 
 /*
  * Copyright 2023 ByteDance Inc.