add: darwin gittid.

- Add a darwin compatible gettid syscall
- split linux/darwin build target files

internal/utils/utils_darwin.go

@@ -0,0 +1,40 @@
+// +build darwin
+/*
+ * GML - Go QML
+ *
+ * The MIT License (MIT)
+ *
+ * Copyright (c) 2019 Roland Singer <roland.singer[at]desertbit.com>
+ * Copyright (c) 2019 Sebastian Borchers <sebastian[at]desertbit.com>
+ *
+ * Permission is hereby granted, free of charge, to any person obtaining a copy
+ * of this software and associated documentation files (the "Software"), to deal
+ * in the Software without restriction, including without limitation the rights
+ * to use, copy, modify, merge, publish, distribute, sublicense, and/or sell
+ * copies of the Software, and to permit persons to whom the Software is
+ * furnished to do so, subject to the following conditions:
+ *
+ * The above copyright notice and this permission notice shall be included in all
+ * copies or substantial portions of the Software.
+ *
+ * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
+ * IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
+ * FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
+ * AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
+ * LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
+ * OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE
+ * SOFTWARE.
+ */
+
+package utils
+
+import (
+	"syscall"
+
+	"golang.org/x/sys/unix"
+)
+
+func GetThreadID() int {
+	tid, _, _ := syscall.Syscall(unix.SYS_THREAD_SELFID, 0, 0, 0)
+	return int(tid)
+}

internal/utils/utils_linux.go

@@ -1,5 +1,4 @@
-// +build !windows
-
+// +build !darwin, !windows
 /*
  * GML - Go QML
  *