wat2wasm 增加锁保护; 例子增加全局变量

api/api_nowasm_test.go

@@ -11,8 +11,10 @@ import (
 
 func ExampleRunCode() {
 	const code = `
+		var gBase: i32 = 1000
+
 		fn main() {
-			println(add(40, 2))
+			println(add(40, 2) + gBase)
 		}
 
 		fn add(a: i32, b: i32) => i32 {
@@ -28,5 +30,5 @@ func ExampleRunCode() {
 	fmt.Print(string(output))
 
 	// Output:
-	// 42
+	// 1042
 }

internal/app/apputil/wabt_wat2wasm.go

@@ -11,6 +11,7 @@ import (
 	"path/filepath"
 	"runtime"
 	"strings"
+	"sync"
 
 	"github.com/tetratelabs/wazero"
 	"github.com/tetratelabs/wazero/api"
@@ -97,7 +98,12 @@ func InstallWat2wasm(path string) error {
 	return nil
 }
 
+var muRunWat2Wasm sync.Mutex
+
 func RunWat2Wasm(args ...string) (stdoutStderr []byte, err error) {
+	muRunWat2Wasm.Lock()
+	defer muRunWat2Wasm.Unlock()
+
 	if wat2wasmPath == "" {
 		logger.Tracef(&config.EnableTrace_app, "wat2wasm not found")
 		return nil, errors.New("wat2wasm not found")