init

crash/crash_darwin.go

@@ -0,0 +1,21 @@
+// +build darwin
+
+package crash
+
+import (
+	"log"
+	"os"
+	"syscall"
+
+	"github.com/pkg/errors"
+)
+
+// CrashLog set crash log
+func CrashLog(file string) {
+	f, err := os.OpenFile(file, os.O_WRONLY|os.O_CREATE|os.O_APPEND, 0666)
+	if err != nil {
+		log.Fatalf("open crash log file error. %v", errors.WithStack(err))
+	} else {
+		syscall.Dup2(int(f.Fd()), 2)
+	}
+}

crash/crash_unix.go

@@ -0,0 +1,21 @@
+// +build freebsd openbsd netbsd dragonfly linux
+
+package crash
+
+import (
+	"log"
+	"os"
+	"syscall"
+
+	"github.com/pkg/errors"
+)
+
+// CrashLog set crash log
+func CrashLog(file string) {
+	f, err := os.OpenFile(file, os.O_WRONLY|os.O_CREATE|os.O_APPEND, 0666)
+	if err != nil {
+		log.Fatalf("open crash log file error. %v", errors.WithStack(err))
+	} else {
+		syscall.Dup3(int(f.Fd()), 2, 0)
+	}
+}

crash/crash_win.go

@@ -0,0 +1,40 @@
+// +build windows
+
+package crash
+
+import (
+	"log"
+	"os"
+	"syscall"
+
+	"github.com/pkg/errors"
+)
+
+var (
+	kernel32         = syscall.MustLoadDLL("kernel32.dll")
+	procSetStdHandle = kernel32.MustFindProc("SetStdHandle")
+)
+
+func setStdHandle(stdhandle int32, handle syscall.Handle) error {
+	r0, _, e1 := syscall.Syscall(procSetStdHandle.Addr(), 2, uintptr(stdhandle), uintptr(handle), 0)
+	if r0 == 0 {
+		if e1 != 0 {
+			return error(e1)
+		}
+		return syscall.EINVAL
+	}
+	return nil
+}
+
+// CrashLog set crash log
+func CrashLog(file string) {
+	f, err := os.OpenFile(file, os.O_WRONLY|os.O_CREATE|os.O_APPEND, 0666)
+	if err != nil {
+		log.Println(err.Error())
+	} else {
+		err = setStdHandle(syscall.STD_ERROR_HANDLE, syscall.Handle(f.Fd()))
+		if err != nil {
+			log.Fatalf("open crash log file error. %v", errors.WithStack(err))
+		}
+	}
+}