Thread.postMessage

Sends messages to a thread.

    
    
    
postMessage(msg)

Examples

• Send messages in concurrent threads and use eventLoop() to receive message notifications.

  
      javascript
      
      
  function main() {
      var t1 = threading.Thread(function() {
          for (var i = 0; i < 10; i++) {
              Log("thread1 postMessage():", i)
              threading.mainThread().postMessage(i)
              Sleep(500)
          }
      })
      for (var i = 0; i < 10; i++) {
          var event = threading.mainThread().eventLoop()
          Log("main event:", event)
          Sleep(500)
      }
      t1.join()
  }
  

• Supports sending functions.

  
      javascript
      
      
  function main() {
      threading.mainThread().postMessage(function(msg) {
          Log("func from mainThread, msg:", msg)
      })
  
      threading.Thread(function() {
          var func = threading.mainThread().peekMessage()
          func("in " + threading.currentThread().name())
      }).join()
  }
  

Arguments

See Also

Remarks

When the postMessage() function is called in a thread's execution function to send signals or data, it generates a message event. You can use the eventLoop() function to receive message notifications.

Each thread's message queue holds at most 10240 messages and 32 MB in total; when either limit is reached, the oldest messages are dropped and a warning is printed. The receiving thread should call peekMessage() regularly to take messages off the queue.