Source file
src/runtime/signal_windows_test.go
Documentation: runtime
1
2
3
4 package runtime_test
5
6 import (
7 "bufio"
8 "bytes"
9 "fmt"
10 "internal/testenv"
11 "os/exec"
12 "path/filepath"
13 "runtime"
14 "strconv"
15 "strings"
16 "syscall"
17 "testing"
18 )
19
20 func TestVectoredHandlerDontCrashOnLibrary(t *testing.T) {
21 if *flagQuick {
22 t.Skip("-quick")
23 }
24 if runtime.GOARCH != "amd64" {
25 t.Skip("this test can only run on windows/amd64")
26 }
27 testenv.MustHaveGoBuild(t)
28 testenv.MustHaveExecPath(t, "gcc")
29 testprog.Lock()
30 defer testprog.Unlock()
31 dir := t.TempDir()
32
33
34 dll := filepath.Join(dir, "testwinlib.dll")
35 cmd := exec.Command(testenv.GoToolPath(t), "build", "-o", dll, "-buildmode", "c-shared", "testdata/testwinlib/main.go")
36 out, err := testenv.CleanCmdEnv(cmd).CombinedOutput()
37 if err != nil {
38 t.Fatalf("failed to build go library: %s\n%s", err, out)
39 }
40
41
42 exe := filepath.Join(dir, "test.exe")
43 cmd = exec.Command("gcc", "-L"+dir, "-I"+dir, "-ltestwinlib", "-o", exe, "testdata/testwinlib/main.c")
44 out, err = testenv.CleanCmdEnv(cmd).CombinedOutput()
45 if err != nil {
46 t.Fatalf("failed to build c exe: %s\n%s", err, out)
47 }
48
49
50 cmd = exec.Command(exe)
51 out, err = testenv.CleanCmdEnv(cmd).CombinedOutput()
52 if err != nil {
53 t.Fatalf("failure while running executable: %s\n%s", err, out)
54 }
55 expectedOutput := "exceptionCount: 1\ncontinueCount: 1\n"
56
57 cleanedOut := strings.ReplaceAll(string(out), "\r\n", "\n")
58 if cleanedOut != expectedOutput {
59 t.Errorf("expected output %q, got %q", expectedOutput, cleanedOut)
60 }
61 }
62
63 func sendCtrlBreak(pid int) error {
64 kernel32, err := syscall.LoadDLL("kernel32.dll")
65 if err != nil {
66 return fmt.Errorf("LoadDLL: %v\n", err)
67 }
68 generateEvent, err := kernel32.FindProc("GenerateConsoleCtrlEvent")
69 if err != nil {
70 return fmt.Errorf("FindProc: %v\n", err)
71 }
72 result, _, err := generateEvent.Call(syscall.CTRL_BREAK_EVENT, uintptr(pid))
73 if result == 0 {
74 return fmt.Errorf("GenerateConsoleCtrlEvent: %v\n", err)
75 }
76 return nil
77 }
78
79
80
81 func TestCtrlHandler(t *testing.T) {
82 testenv.MustHaveGoBuild(t)
83 t.Parallel()
84
85
86 exe := filepath.Join(t.TempDir(), "test.exe")
87 cmd := exec.Command(testenv.GoToolPath(t), "build", "-o", exe, "testdata/testwinsignal/main.go")
88 out, err := testenv.CleanCmdEnv(cmd).CombinedOutput()
89 if err != nil {
90 t.Fatalf("failed to build go exe: %v\n%s", err, out)
91 }
92
93
94 cmd = exec.Command(exe)
95 var stderr bytes.Buffer
96 cmd.Stderr = &stderr
97 outPipe, err := cmd.StdoutPipe()
98 if err != nil {
99 t.Fatalf("Failed to create stdout pipe: %v", err)
100 }
101 outReader := bufio.NewReader(outPipe)
102
103
104 const _CREATE_NEW_CONSOLE = 0x00000010
105 cmd.SysProcAttr = &syscall.SysProcAttr{
106 CreationFlags: _CREATE_NEW_CONSOLE,
107 HideWindow: true,
108 }
109 if err := cmd.Start(); err != nil {
110 t.Fatalf("Start failed: %v", err)
111 }
112 defer func() {
113 cmd.Process.Kill()
114 cmd.Wait()
115 }()
116
117
118 if line, err := outReader.ReadString('\n'); err != nil {
119 t.Fatalf("could not read stdout: %v", err)
120 } else if strings.TrimSpace(line) != "ready" {
121 t.Fatalf("unexpected message: %s", line)
122 }
123
124
125 if err := exec.Command("taskkill.exe", "/pid", strconv.Itoa(cmd.Process.Pid)).Run(); err != nil {
126 t.Fatalf("failed to kill: %v", err)
127 }
128
129
130 if line, err := outReader.ReadString('\n'); err != nil {
131 t.Fatalf("could not read stdout: %v", err)
132 } else if expected, got := syscall.SIGTERM.String(), strings.TrimSpace(line); expected != got {
133 t.Fatalf("Expected '%s' got: %s", expected, got)
134 }
135
136
137 if err := cmd.Wait(); err != nil {
138 t.Fatalf("Program exited with error: %v\n%s", err, &stderr)
139 }
140 }
141
142
143
144 func TestLibraryCtrlHandler(t *testing.T) {
145 if *flagQuick {
146 t.Skip("-quick")
147 }
148 if runtime.GOARCH != "amd64" {
149 t.Skip("this test can only run on windows/amd64")
150 }
151 testenv.MustHaveGoBuild(t)
152 testenv.MustHaveExecPath(t, "gcc")
153 testprog.Lock()
154 defer testprog.Unlock()
155 dir := t.TempDir()
156
157
158 dll := filepath.Join(dir, "dummy.dll")
159 cmd := exec.Command(testenv.GoToolPath(t), "build", "-o", dll, "-buildmode", "c-shared", "testdata/testwinlibsignal/dummy.go")
160 out, err := testenv.CleanCmdEnv(cmd).CombinedOutput()
161 if err != nil {
162 t.Fatalf("failed to build go library: %s\n%s", err, out)
163 }
164
165
166 exe := filepath.Join(dir, "test.exe")
167 cmd = exec.Command("gcc", "-o", exe, "testdata/testwinlibsignal/main.c")
168 out, err = testenv.CleanCmdEnv(cmd).CombinedOutput()
169 if err != nil {
170 t.Fatalf("failed to build c exe: %s\n%s", err, out)
171 }
172
173
174 cmd = exec.Command(exe)
175 var stderr bytes.Buffer
176 cmd.Stderr = &stderr
177 outPipe, err := cmd.StdoutPipe()
178 if err != nil {
179 t.Fatalf("Failed to create stdout pipe: %v", err)
180 }
181 outReader := bufio.NewReader(outPipe)
182
183 cmd.SysProcAttr = &syscall.SysProcAttr{
184 CreationFlags: syscall.CREATE_NEW_PROCESS_GROUP,
185 }
186 if err := cmd.Start(); err != nil {
187 t.Fatalf("Start failed: %v", err)
188 }
189
190 errCh := make(chan error, 1)
191 go func() {
192 if line, err := outReader.ReadString('\n'); err != nil {
193 errCh <- fmt.Errorf("could not read stdout: %v", err)
194 } else if strings.TrimSpace(line) != "ready" {
195 errCh <- fmt.Errorf("unexpected message: %v", line)
196 } else {
197 errCh <- sendCtrlBreak(cmd.Process.Pid)
198 }
199 }()
200
201 if err := <-errCh; err != nil {
202 t.Fatal(err)
203 }
204 if err := cmd.Wait(); err != nil {
205 t.Fatalf("Program exited with error: %v\n%s", err, &stderr)
206 }
207 }
208
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