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-rw-r--r--misc/cgo/stdio/overlaydir_test.go78
-rw-r--r--misc/cgo/stdio/stdio_test.go63
-rw-r--r--misc/cgo/stdio/testdata/chain.go48
-rw-r--r--misc/cgo/stdio/testdata/chain.out55
-rw-r--r--misc/cgo/stdio/testdata/fib.go52
-rw-r--r--misc/cgo/stdio/testdata/fib.out91
-rw-r--r--misc/cgo/stdio/testdata/hello.go15
-rw-r--r--misc/cgo/stdio/testdata/hello.out1
-rw-r--r--misc/cgo/stdio/testdata/run.out150
-rw-r--r--misc/cgo/stdio/testdata/stdio/file.go44
-rw-r--r--misc/cgo/stdio/testdata/stdio/stdio.go22
11 files changed, 619 insertions, 0 deletions
diff --git a/misc/cgo/stdio/overlaydir_test.go b/misc/cgo/stdio/overlaydir_test.go
new file mode 100644
index 0000000..027ebf1
--- /dev/null
+++ b/misc/cgo/stdio/overlaydir_test.go
@@ -0,0 +1,78 @@
+// Copyright 2019 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 stdio_test
+
+import (
+ "io"
+ "os"
+ "path/filepath"
+ "strings"
+)
+
+// overlayDir makes a minimal-overhead copy of srcRoot in which new files may be added.
+//
+// TODO: Once we no longer need to support the misc module in GOPATH mode,
+// factor this function out into a package to reduce duplication.
+func overlayDir(dstRoot, srcRoot string) error {
+ dstRoot = filepath.Clean(dstRoot)
+ if err := os.MkdirAll(dstRoot, 0777); err != nil {
+ return err
+ }
+
+ srcRoot, err := filepath.Abs(srcRoot)
+ if err != nil {
+ return err
+ }
+
+ return filepath.Walk(srcRoot, func(srcPath string, info os.FileInfo, err error) error {
+ if err != nil || srcPath == srcRoot {
+ return err
+ }
+
+ suffix := strings.TrimPrefix(srcPath, srcRoot)
+ for len(suffix) > 0 && suffix[0] == filepath.Separator {
+ suffix = suffix[1:]
+ }
+ dstPath := filepath.Join(dstRoot, suffix)
+
+ perm := info.Mode() & os.ModePerm
+ if info.Mode()&os.ModeSymlink != 0 {
+ info, err = os.Stat(srcPath)
+ if err != nil {
+ return err
+ }
+ perm = info.Mode() & os.ModePerm
+ }
+
+ // Always copy directories (don't symlink them).
+ // If we add a file in the overlay, we don't want to add it in the original.
+ if info.IsDir() {
+ return os.MkdirAll(dstPath, perm|0200)
+ }
+
+ // If the OS supports symlinks, use them instead of copying bytes.
+ if err := os.Symlink(srcPath, dstPath); err == nil {
+ return nil
+ }
+
+ // Otherwise, copy the bytes.
+ src, err := os.Open(srcPath)
+ if err != nil {
+ return err
+ }
+ defer src.Close()
+
+ dst, err := os.OpenFile(dstPath, os.O_WRONLY|os.O_CREATE|os.O_EXCL, perm)
+ if err != nil {
+ return err
+ }
+
+ _, err = io.Copy(dst, src)
+ if closeErr := dst.Close(); err == nil {
+ err = closeErr
+ }
+ return err
+ })
+}
diff --git a/misc/cgo/stdio/stdio_test.go b/misc/cgo/stdio/stdio_test.go
new file mode 100644
index 0000000..675418f
--- /dev/null
+++ b/misc/cgo/stdio/stdio_test.go
@@ -0,0 +1,63 @@
+// Copyright 2019 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 stdio_test
+
+import (
+ "bytes"
+ "log"
+ "os"
+ "os/exec"
+ "path/filepath"
+ "strings"
+ "testing"
+)
+
+func TestMain(m *testing.M) {
+ log.SetFlags(log.Lshortfile)
+ os.Exit(testMain(m))
+}
+
+func testMain(m *testing.M) int {
+ GOPATH, err := os.MkdirTemp("", "cgostdio")
+ if err != nil {
+ log.Panic(err)
+ }
+ defer os.RemoveAll(GOPATH)
+ os.Setenv("GOPATH", GOPATH)
+
+ // Copy testdata into GOPATH/src/cgostdio, along with a go.mod file
+ // declaring the same path.
+ modRoot := filepath.Join(GOPATH, "src", "cgostdio")
+ if err := overlayDir(modRoot, "testdata"); err != nil {
+ log.Panic(err)
+ }
+ if err := os.Chdir(modRoot); err != nil {
+ log.Panic(err)
+ }
+ os.Setenv("PWD", modRoot)
+ if err := os.WriteFile("go.mod", []byte("module cgostdio\n"), 0666); err != nil {
+ log.Panic(err)
+ }
+
+ return m.Run()
+}
+
+func TestTestRun(t *testing.T) {
+ if os.Getenv("GOOS") == "android" {
+ t.Skip("subpackage stdio is not available on android")
+ }
+ out, err := exec.Command("go", "env", "GOROOT").Output()
+ if err != nil {
+ t.Fatal(err)
+ }
+ GOROOT := string(bytes.TrimSpace(out))
+
+ cmd := exec.Command("go", "run", filepath.Join(GOROOT, "test", "run.go"), "-", ".")
+ out, err = cmd.CombinedOutput()
+ if err != nil {
+ t.Fatalf("%s: %s\n%s", strings.Join(cmd.Args, " "), err, out)
+ }
+ t.Logf("%s:\n%s", strings.Join(cmd.Args, " "), out)
+}
diff --git a/misc/cgo/stdio/testdata/chain.go b/misc/cgo/stdio/testdata/chain.go
new file mode 100644
index 0000000..6c3f406
--- /dev/null
+++ b/misc/cgo/stdio/testdata/chain.go
@@ -0,0 +1,48 @@
+// run -tags=use_go_run
+
+// Copyright 2009 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.
+
+// +build test_run
+
+// Pass numbers along a chain of threads.
+
+package main
+
+import (
+ "runtime"
+ "strconv"
+
+ "cgostdio/stdio"
+)
+
+const N = 10
+const R = 5
+
+func link(left chan<- int, right <-chan int) {
+ // Keep the links in dedicated operating system
+ // threads, so that this program tests coordination
+ // between pthreads and not just goroutines.
+ runtime.LockOSThread()
+ for {
+ v := <-right
+ stdio.Stdout.WriteString(strconv.Itoa(v) + "\n")
+ left <- 1 + v
+ }
+}
+
+func main() {
+ leftmost := make(chan int)
+ var left chan int
+ right := leftmost
+ for i := 0; i < N; i++ {
+ left, right = right, make(chan int)
+ go link(left, right)
+ }
+ for i := 0; i < R; i++ {
+ right <- 0
+ x := <-leftmost
+ stdio.Stdout.WriteString(strconv.Itoa(x) + "\n")
+ }
+}
diff --git a/misc/cgo/stdio/testdata/chain.out b/misc/cgo/stdio/testdata/chain.out
new file mode 100644
index 0000000..963cf9b
--- /dev/null
+++ b/misc/cgo/stdio/testdata/chain.out
@@ -0,0 +1,55 @@
+0
+1
+2
+3
+4
+5
+6
+7
+8
+9
+10
+0
+1
+2
+3
+4
+5
+6
+7
+8
+9
+10
+0
+1
+2
+3
+4
+5
+6
+7
+8
+9
+10
+0
+1
+2
+3
+4
+5
+6
+7
+8
+9
+10
+0
+1
+2
+3
+4
+5
+6
+7
+8
+9
+10
diff --git a/misc/cgo/stdio/testdata/fib.go b/misc/cgo/stdio/testdata/fib.go
new file mode 100644
index 0000000..49cb0ea
--- /dev/null
+++ b/misc/cgo/stdio/testdata/fib.go
@@ -0,0 +1,52 @@
+// run -tags=use_go_run
+
+// Copyright 2009 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.
+
+// +build test_run
+
+// Compute Fibonacci numbers with two goroutines
+// that pass integers back and forth. No actual
+// concurrency, just threads and synchronization
+// and foreign code on multiple pthreads.
+
+package main
+
+import (
+ "runtime"
+ "strconv"
+
+ "cgostdio/stdio"
+)
+
+func fibber(c, out chan int64, i int64) {
+ // Keep the fibbers in dedicated operating system
+ // threads, so that this program tests coordination
+ // between pthreads and not just goroutines.
+ runtime.LockOSThread()
+
+ if i == 0 {
+ c <- i
+ }
+ for {
+ j := <-c
+ stdio.Stdout.WriteString(strconv.FormatInt(j, 10) + "\n")
+ out <- j
+ <-out
+ i += j
+ c <- i
+ }
+}
+
+func main() {
+ c := make(chan int64)
+ out := make(chan int64)
+ go fibber(c, out, 0)
+ go fibber(c, out, 1)
+ <-out
+ for i := 0; i < 90; i++ {
+ out <- 1
+ <-out
+ }
+}
diff --git a/misc/cgo/stdio/testdata/fib.out b/misc/cgo/stdio/testdata/fib.out
new file mode 100644
index 0000000..17ff503
--- /dev/null
+++ b/misc/cgo/stdio/testdata/fib.out
@@ -0,0 +1,91 @@
+0
+1
+1
+2
+3
+5
+8
+13
+21
+34
+55
+89
+144
+233
+377
+610
+987
+1597
+2584
+4181
+6765
+10946
+17711
+28657
+46368
+75025
+121393
+196418
+317811
+514229
+832040
+1346269
+2178309
+3524578
+5702887
+9227465
+14930352
+24157817
+39088169
+63245986
+102334155
+165580141
+267914296
+433494437
+701408733
+1134903170
+1836311903
+2971215073
+4807526976
+7778742049
+12586269025
+20365011074
+32951280099
+53316291173
+86267571272
+139583862445
+225851433717
+365435296162
+591286729879
+956722026041
+1548008755920
+2504730781961
+4052739537881
+6557470319842
+10610209857723
+17167680177565
+27777890035288
+44945570212853
+72723460248141
+117669030460994
+190392490709135
+308061521170129
+498454011879264
+806515533049393
+1304969544928657
+2111485077978050
+3416454622906707
+5527939700884757
+8944394323791464
+14472334024676221
+23416728348467685
+37889062373143906
+61305790721611591
+99194853094755497
+160500643816367088
+259695496911122585
+420196140727489673
+679891637638612258
+1100087778366101931
+1779979416004714189
+2880067194370816120
diff --git a/misc/cgo/stdio/testdata/hello.go b/misc/cgo/stdio/testdata/hello.go
new file mode 100644
index 0000000..046bfee
--- /dev/null
+++ b/misc/cgo/stdio/testdata/hello.go
@@ -0,0 +1,15 @@
+// run -tags=use_go_run
+
+// Copyright 2009 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.
+
+// +build test_run
+
+package main
+
+import "cgostdio/stdio"
+
+func main() {
+ stdio.Stdout.WriteString(stdio.Greeting + "\n")
+}
diff --git a/misc/cgo/stdio/testdata/hello.out b/misc/cgo/stdio/testdata/hello.out
new file mode 100644
index 0000000..4b5fa63
--- /dev/null
+++ b/misc/cgo/stdio/testdata/hello.out
@@ -0,0 +1 @@
+hello, world
diff --git a/misc/cgo/stdio/testdata/run.out b/misc/cgo/stdio/testdata/run.out
new file mode 100644
index 0000000..c0e4965
--- /dev/null
+++ b/misc/cgo/stdio/testdata/run.out
@@ -0,0 +1,150 @@
+* hello
+hello, world
+* fib
+0
+1
+1
+2
+3
+5
+8
+13
+21
+34
+55
+89
+144
+233
+377
+610
+987
+1597
+2584
+4181
+6765
+10946
+17711
+28657
+46368
+75025
+121393
+196418
+317811
+514229
+832040
+1346269
+2178309
+3524578
+5702887
+9227465
+14930352
+24157817
+39088169
+63245986
+102334155
+165580141
+267914296
+433494437
+701408733
+1134903170
+1836311903
+2971215073
+4807526976
+7778742049
+12586269025
+20365011074
+32951280099
+53316291173
+86267571272
+139583862445
+225851433717
+365435296162
+591286729879
+956722026041
+1548008755920
+2504730781961
+4052739537881
+6557470319842
+10610209857723
+17167680177565
+27777890035288
+44945570212853
+72723460248141
+117669030460994
+190392490709135
+308061521170129
+498454011879264
+806515533049393
+1304969544928657
+2111485077978050
+3416454622906707
+5527939700884757
+8944394323791464
+14472334024676221
+23416728348467685
+37889062373143906
+61305790721611591
+99194853094755497
+160500643816367088
+259695496911122585
+420196140727489673
+679891637638612258
+1100087778366101931
+1779979416004714189
+2880067194370816120
+* chain
+0
+1
+2
+3
+4
+5
+6
+7
+8
+9
+10
+0
+1
+2
+3
+4
+5
+6
+7
+8
+9
+10
+0
+1
+2
+3
+4
+5
+6
+7
+8
+9
+10
+0
+1
+2
+3
+4
+5
+6
+7
+8
+9
+10
+0
+1
+2
+3
+4
+5
+6
+7
+8
+9
+10
diff --git a/misc/cgo/stdio/testdata/stdio/file.go b/misc/cgo/stdio/testdata/stdio/file.go
new file mode 100644
index 0000000..a024f2c
--- /dev/null
+++ b/misc/cgo/stdio/testdata/stdio/file.go
@@ -0,0 +1,44 @@
+// skip
+
+// Copyright 2009 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.
+
+/*
+A trivial example of wrapping a C library in Go.
+For a more complex example and explanation,
+see ../gmp/gmp.go.
+*/
+
+package stdio
+
+/*
+#include <stdio.h>
+#include <stdlib.h>
+#include <sys/stat.h>
+#include <errno.h>
+
+char* greeting = "hello, world";
+*/
+import "C"
+import "unsafe"
+
+type File C.FILE
+
+// Test reference to library symbol.
+// Stdout and stderr are too special to be a reliable test.
+//var = C.environ
+
+func (f *File) WriteString(s string) {
+ p := C.CString(s)
+ C.fputs(p, (*C.FILE)(f))
+ C.free(unsafe.Pointer(p))
+ f.Flush()
+}
+
+func (f *File) Flush() {
+ C.fflush((*C.FILE)(f))
+}
+
+var Greeting = C.GoString(C.greeting)
+var Gbytes = C.GoBytes(unsafe.Pointer(C.greeting), C.int(len(Greeting)))
diff --git a/misc/cgo/stdio/testdata/stdio/stdio.go b/misc/cgo/stdio/testdata/stdio/stdio.go
new file mode 100644
index 0000000..d216e44
--- /dev/null
+++ b/misc/cgo/stdio/testdata/stdio/stdio.go
@@ -0,0 +1,22 @@
+// skip
+
+// Copyright 2009 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 stdio
+
+/*
+#include <stdio.h>
+
+// on mingw, stderr and stdout are defined as &_iob[FILENO]
+// on netbsd, they are defined as &__sF[FILENO]
+// and cgo doesn't recognize them, so write a function to get them,
+// instead of depending on internals of libc implementation.
+FILE *getStdout(void) { return stdout; }
+FILE *getStderr(void) { return stderr; }
+*/
+import "C"
+
+var Stdout = (*File)(C.getStdout())
+var Stderr = (*File)(C.getStderr())
generated by cgit v1.2.3 (git 2.39.1) at 2024-11-06 11:36:54 +0000