Fix event data lifetime

examples/log-keys.ts

@@ -0,0 +1,25 @@
+'use strict';
+
+import iohook from 'iohook-raub';
+
+iohook.on('keypress', (msg) => {
+  console.log('keypress', msg);
+});
+
+iohook.on('keydown', (msg) => {
+  console.log('keydown', msg);
+});
+
+iohook.on('keyup', (msg) => {
+  console.log('keyup', msg);
+});
+
+iohook.start();
+// iohook.setDebug(true); // Uncomment this line for see all debug information from iohook
+
+console.log('Hook started.');
+
+setInterval(() => {
+  console.log('Hook is working...');
+}, 5000);
+

examples/package.json

@@ -4,7 +4,9 @@
 	"private": true,
 	"type": "module",
 	"scripts": {
-		"start": "npx ts-node-esm ./main.ts"
+		"start": "npx ts-node-esm ./log-keys.ts",
+		"log-keys": "npx ts-node-esm ./log-keys.ts",
+		"tmp-disable": "npx ts-node-esm ./tmp-disable.ts"
 	},
 	"dependencies": {
 		"iohook-raub": "file:..",

src/cpp/hook-worker.cpp

@@ -36,6 +36,17 @@ bool logger_proc(unsigned int level, const char *format, ...) {
 	return status;
 }
 
+constexpr size_t MAX_STORED_COUNT = 256;
+uiohook_event _storedEvents[MAX_STORED_COUNT];
+size_t _storedCount = 0;
+
+static inline uiohook_event *_keepEvent(const uiohook_event * const event) {
+	uiohook_event *ptr = &(_storedEvents[_storedCount]);
+	_storedCount = (_storedCount + 1) % MAX_STORED_COUNT;
+	memcpy(ptr, event, sizeof(uiohook_event));
+	return ptr;
+}
+
 // Executes on the same thread that hook_run() is called from.
 void dispatch_proc(uiohook_event * const event) {
 	switch (event->type) {
@@ -48,10 +59,7 @@ void dispatch_proc(uiohook_event * const event) {
 		case EVENT_MOUSE_MOVED:
 		case EVENT_MOUSE_DRAGGED:
 		case EVENT_MOUSE_WHEEL:
-			uiohook_event event_copy;
-			memcpy(&event_copy, event, sizeof(uiohook_event));
-			// zqueue.push(event_copy);
-			callTsFn(&event_copy);
+			callTsFn(_keepEvent(event));
 			break;
 		default: break;
 	}