init: pristine aerc 0.20.0 source

commands/mode/noquit.go

@@ -0,0 +1,23 @@
+package mode
+
+import "sync/atomic"
+
+// noquit is a counter for goroutines that requested the no-quit mode
+var noquit int32
+
+// NoQuit enters no-quit mode where aerc cannot be exited (unless the force
+// option is used)
+func NoQuit() {
+	atomic.AddInt32(&noquit, 1)
+}
+
+// NoQuitDone leaves the no-quit mode
+func NoQuitDone() {
+	atomic.AddInt32(&noquit, -1)
+}
+
+// QuitAllowed checks if aerc can exit normally (only when all goroutines that
+// requested a no-quit mode were done and called the NoQuitDone() function)
+func QuitAllowed() bool {
+	return atomic.LoadInt32(&noquit) <= 0
+}