精华内容
下载资源
问答
  • notify

    2016-10-31 15:54:24
    package com.example.seekbar; import android.app.Activity; import android.app.Notification; import android.app.NotificationManager; import android.app.PendingIntent;...import android.content.Int
    package com.example.seekbar;


    import android.app.Activity;
    import android.app.Notification;
    import android.app.NotificationManager;
    import android.app.PendingIntent;
    import android.content.Intent;
    import android.os.Bundle;
    import android.view.Gravity;
    import android.view.View;
    import android.widget.Button;
    import android.widget.ImageView;
    import android.widget.LinearLayout;
    import android.widget.TextView;
    import android.widget.Toast;


    public class Alert extends Activity {

    private Button btn;

        @Override
        protected void onCreate(Bundle savedInstanceState) {
        // TODO Auto-generated method stub
        super.onCreate(savedInstanceState);
        setContentView(R.layout.alert);
        noti();
       
        }
        
        
        private void noti(){
        final NotificationManager notificationManager=(NotificationManager) getSystemService(NOTIFICATION_SERVICE);
        btn=(Button) findViewById(R.id.button1);
            btn.setOnClickListener(new View.OnClickListener() {

    private int NOTIFYID_1;


    @SuppressWarnings("deprecation")
    @Override
    public void onClick(View arg0) {
    // TODO Auto-generated method stub

    // Notification notify=new Notification();
    // notify.icon=R.drawable.img01;
    // notify.tickerText="显示第一个通知";
    // notify.when=System.currentTimeMillis();   //设置发送的时间
    // notify.defaults=Notification.DEFAULT_ALL;
    // notify.setLatestEventInfo(Alert.this, "无题", "每天进步一点点", null);
    // notificationManager.notify(NOTIFYID_1, notify);

    //第二个通知
    Notification notify1=new Notification(R.drawable.img01,"显示第二个通知",System.currentTimeMillis());
    notify1.flags|=Notification.FLAG_AUTO_CANCEL;
    Intent i=new Intent(Alert.this,Alert.class);
    PendingIntent pendingintent=PendingIntent.getActivity(Alert.this, 0, i, 0);
    notify1.setLatestEventInfo(Alert.this, "通知", "查看详情信息", pendingintent);
    notificationManager.notify(NOTIFYID_1, notify1);


    }
    });
       
       
       
        }
        
        //通过构造方法来创建吐司
        private void clicktoast(){
            btn=(Button) findViewById(R.id.button1);
        btn.setOnClickListener(new View.OnClickListener() {

    @Override
    public void onClick(View arg0) {
    // TODO Auto-generated method stub
    //通过makeText();
        //Toast.makeText(Alert.this, "这是通过maketext()创建的提示框", Toast.LENGTH_SHORT).show();
        //通过构造方法
        Toast toast=new Toast(Alert.this);
        toast.setDuration(Toast.LENGTH_SHORT);
        toast.setGravity(Gravity.CENTER, 0, 0);
        LinearLayout ll=new LinearLayout(Alert.this);
        ImageView iv=new ImageView(Alert.this);
        iv.setImageResource(R.drawable.ic_launcher);
        iv.setPadding(0,0, 5, 0);
        ll.addView(iv);
        TextView tv=new TextView(Alert.this);
        tv.setText("这是通过构造方法创建的消息提示框");
        ll.addView(tv);
        toast.setView(ll);
        toast.show();
    }
    });
        }
        
        
        
        
    }
    展开全文
  • <p>Previously notify repeated failure would only work if notify failure option was checked. This detaches the behavior so that either or could be checked. <p>If notify failure is enabled and notify ...
  • notifynotify Python Condition.notify()方法 (Python Condition.notify() Method) notify() is an inbuilt method of the Condition class of the threading module in Python. notify()是Python中线程模块的...

    notify和notify

    Python Condition.notify()方法 (Python Condition.notify() Method)

    notify() is an inbuilt method of the Condition class of the threading module in Python.

    notify()是Python中线程模块的Condition类的内置方法。

    Condition class implements condition variable objects. A condition variable allows one or more threads to wait until they are notified by another thread. This method is used to wake any thread which is waiting on a condition variable. The thread must be called only when the lock has been acquired by the calling thread. This method can be used to wakes up at most n of the threads that are waiting for the condition variable; it is a no-op if no threads are waiting.

    条件类实现条件变量对象 。 条件变量允许一个或多个线程等待,直到被另一个线程通知为止。 此方法用于唤醒任何正在等待条件变量的线程。 仅当调用线程已获取锁时,才必须调用该线程。 此方法可用于唤醒最多n个正在等待条件变量的线程。 如果没有线程在等待,则为空操作。

    Read about Producer-Consumer here: Condition.acquire() Method

    在这里阅读有关Producer-Consumer的信息: Condition.acquire()方法

    Module:

    模块:

        from threading import Condition
    
    

    Syntax:

    句法:

        notify(n=1)
    
    

    Parameter(s):

    参数:

    • n: It is an optional parameter, which specifies the number of threads that can waken up which were waiting on the condition variable. Its default value is 1.

      n :这是一个可选参数,它指定在条件变量上等待的可以唤醒的线程数。 默认值为1。

    Return value:

    返回值:

    The return type of this method is <class 'NoneType'>. The method does not return anything. It notifies the threads that are waiting on the condition.

    此方法的返回类型为<class'NoneType'> 。 该方法不返回任何内容。 它通知正在等待条件的线程。

    Example:

    例:

    # Python program to explain the
    # use of notify() method for Condition object
    
    import threading
    import time
    import random
    
    class subclass:
      # Initialising the shared resources
      def __init__(self):
        self.x = []
      
      # Add an item for the producer
      def produce_item(self, x_item):
        print("Producer adding an item to the list")
        self.x.append(x_item)
        
      # Consume an item for the consumer
      def consume_item(self):
        print("Consuming from the list")
        consumed_item = self.x[0]
        print("Consumed item: ", consumed_item)
        self.x.remove(consumed_item)
    
    def producer(subclass_obj, condition_obj):
        # Selecting a random number from the 1 to 3
        r = random.randint(1,3)
        print("Random number selected was:", r)
        
        # Creting r number of items by the producer
        for i in range(1, r):
          print("Producing an item, time it will take(seconds): " + str(i))
          time.sleep(i)
          
          print("Producer acquiring the lock")
          condition_obj.acquire()
          try:
            # Produce an item
            subclass_obj.produce_item(i)
            # Notify that an item  has been produced
            condition_obj.notify()
          finally:
            # Releasing the lock after producing
            condition_obj.release()
          
    def consumer(subclass_obj, condition_obj):
        condition_obj.acquire()
        while True:
          try:
            # Consume the item 
            subclass_obj.consume_item()
          except:
            print("No item to consume, list empty")
            print("Waiting for 10 seconds")
            # wait with a maximum timeout of 10 sec
            value = condition_obj.wait(10)
            if value:
              print("Item produced notified")
              continue
            else:
              print("Waiting timeout")
              break
            
        # Releasig the lock after consuming
        condition_obj.release()
        
    if __name__=='__main__':
        
      # Initialising a condition class object
      condition_obj = threading.Condition()
      # subclass object
      subclass_obj = subclass()
      
      # Producer thread
      pro = threading.Thread(target=producer, args=(subclass_obj,condition_obj,))
      pro.start()
      
      # consumer thread
      con = threading.Thread(target=consumer, args=(subclass_obj,condition_obj,))
      con.start()
    
      pro.join()
      con.join()
      print("Producer Consumer code executed")
    
    

    Output:

    输出:

    Random number selected was: 3
    Producing an item, time it will take(seconds): 1
    Consuming from the list
    No item to consume, list empty
    Waiting for 10 seconds
    Producer acquiring the lock
    Producer adding an item to the list
    Item produced notified
    Consuming from the list
    Consumed item:  1
    Consuming from the list
    No item to consume, list empty
    Waiting for 10 seconds
    Producing an item, time it will take(seconds): 2
    Producer acquiring the lock
    Producer adding an item to the list
    Item produced notified
    Consuming from the list
    Consumed item:  2
    Consuming from the list
    No item to consume, list empty
    Waiting for 10 seconds
    Waiting timeout
    Producer Consumer code executed
    
    
    

    翻译自: https://www.includehelp.com/python/condition-notify-method-with-example.aspx

    notify和notify

    展开全文
  • notify中间件

    2020-06-02 12:51:58
    1、notify核心理念 (1)、为了消息堆积而设计系统 (2)、无单点,可自由扩展的设计 在Notify的整体设计中,我们最优先考虑的就是消息堆积问题,在目前的设计中我们使用了持久化磁盘的方式,在每次用户发消息到...

    1、notify核心理念

    (1)、为了消息堆积而设计系统

    (2)、无单点,可自由扩展的设计

            在Notify的整体设计中,我们最优先考虑的就是消息堆积问题,在目前的设计中我们使用了持久化磁盘的方式,在每次用户发消息到Notify的时候都将消息先落盘,然后再异步的进行消息投递,而没有采用激进的使用内存的方案来加快投递速度。

    展开全文
  • Notify Go version

    2020-12-27 01:07:11
    notify_t_contact、notify_t_verify、notify_t_notification、notify_t_config。 <p>notify_t_contact:维护所有用户的联系方式,每一种联系方式只有一个。 <p>notify_t_verify:维护了所有的验证...
  • Add Notify support

    2020-12-27 06:40:24
    <p>Note that the two headers required for <code>notify</code> have been taken from the <code>notify.sh</code> script, which can be found at <a href="https://github.com/mashlol/notify/blob/master/sh/...
  • notify机制

    2018-06-20 09:16:13
    notify机制 通知链技术可以概括为:事件的被通知者将事件发生时应该执行的操作通过函数指针方式保存在链表(通知链)中,然后当事件发生时通知者依次执行链表中每一个元素的回调函数完成通知。 一、notify定义 ...




    notify机制
    通知链技术可以概括为:事件的被通知者将事件发生时应该执行的操作通过函数指针方式保存在链表(通知链)中,然后当事件发生时通知者依次执行链表中每一个元素的回调函数完成通知。
    一、notify定义

    struct notifier_block {
      notifier_fn_t notifier_call;              //回调接口
      struct notifier_block __rcu *next;        //执行完回调接口后的下一个通知结构
      int priority;                             //优先级
    };
    • 1
    • 2
    • 3
    • 4
    • 5

    由宏BLOCKING_NOTIFIER_HEAD来初始化notifier_block链表头

    #define BLOCKING_NOTIFIER_HEAD(name)        \
      struct blocking_notifier_head name =      \
        BLOCKING_NOTIFIER_INIT(name)
    • 1
    • 2
    • 3

    其注册、注销、通知接口分别为

    extern int blocking_notifier_chain_register(struct blocking_notifier_head *nh,
        struct notifier_block *nb);
    extern int blocking_notifier_chain_unregister(struct blocking_notifier_head *nh,
        struct notifier_block *nb);
    extern int blocking_notifier_call_chain(struct blocking_notifier_head *nh,
        unsigned long val, void *v);
    • 1
    • 2
    • 3
    • 4
    • 5
    • 6

    这几个接口实际上是再封装(针对阻塞,不可阻塞等),通常在不同的内核子系统中,会做不同的封装。注册、注销、通知接口实质原型为:

    static int notifier_chain_register(struct notifier_block **nl,
        struct notifier_block *n);
    static int notifier_chain_unregister(struct notifier_block **nl,
        struct notifier_block *n);
    static int __kprobes notifier_call_chain(struct notifier_block **nl,
              unsigned long val, void *v,int nr_to_call, int *nr_calls);
    • 1
    • 2
    • 3
    • 4
    • 5
    • 6

    通常会对这些接口再封装,比如,在FB子系统中,做了如下的封装处理:

    static BLOCKING_NOTIFIER_HEAD(fb_notifier_list);    //初始化链表头
    
    /**
     *  fb_register_client - register a client notifier
     *  @nb: notifier block to callback on events
     */
    int fb_register_client(struct notifier_block *nb)    //注册notify
    {
      return blocking_notifier_chain_register(&fb_notifier_list, nb);
    }
    EXPORT_SYMBOL(fb_register_client);
    
    /**
     *  fb_unregister_client - unregister a client notifier
     *  @nb: notifier block to callback on events
     */
    int fb_unregister_client(struct notifier_block *nb)   //注销notify
    {
      return blocking_notifier_chain_unregister(&fb_notifier_list, nb);
    }
    EXPORT_SYMBOL(fb_unregister_client);
    
    /**
     * fb_notifier_call_chain - notify clients of fb_events
     *
     */
    int fb_notifier_call_chain(unsigned long val, void *v)    //通知notify
    {
      return blocking_notifier_call_chain(&fb_notifier_list, val, v);
    }
    EXPORT_SYMBOL_GPL(fb_notifier_call_chain);
    • 1
    • 2
    • 3
    • 4
    • 5
    • 6
    • 7
    • 8
    • 9
    • 10
    • 11
    • 12
    • 13
    • 14
    • 15
    • 16
    • 17
    • 18
    • 19
    • 20
    • 21
    • 22
    • 23
    • 24
    • 25
    • 26
    • 27
    • 28
    • 29
    • 30
    • 31

    注册notify:

    fb_register_client()   ---->
          blocking_notifier_chain_register()  ---->
              notifier_chain_register()
    • 1
    • 2
    • 3

    注销notify:

    fb_unregister_client()  ---->
          blocking_notifier_chain_unregister()  --->
              notifier_chain_unregister()  
    • 1
    • 2
    • 3

    通知notify:

    fb_notifier_call_chain()  ---->
          blocking_notifier_call_chain()  ---->
              __blocking_notifier_call_chain()  ---->
                  notifier_call_chain()
    • 1
    • 2
    • 3
    • 4

    二、示例
    例如在RK平台下,编写notify接口的驱动:

    static void knock_input_later_resume(void)
    {
        DBG("%s :enter\n", __func__);
        gpio_set_value(gpio_info->gpio3,1);
    
    
    
    <span class="hljs-keyword">return</span>;
    

    }

    static void knock_input_early_suspend(void)
    {
    DBG(“%s :enter\n”, func);

    gpio_set_value(gpio_info->gpio3,0);

    <span class="hljs-keyword">return</span>;
    

    }

    static int knock_input_event_notify(struct notifier_block *self,
    unsigned long action, void *data) //回调时需要完成的任务,在该事例中是判断不同的FB状态
    {

    <span class="hljs-keyword">struct</span> fb_event *<span class="hljs-keyword">event</span> = data;
    <span class="hljs-keyword">int</span> blank_mode = *((<span class="hljs-keyword">int</span> *)<span class="hljs-keyword">event</span>-&gt;data);
    
    <span class="hljs-keyword">switch</span> (blank_mode) {
    <span class="hljs-keyword">case</span> FB_BLANK_UNBLANK:
        knock_input_later_resume();
        <span class="hljs-keyword">break</span>;
    <span class="hljs-keyword">case</span> FB_BLANK_NORMAL:
        knock_input_early_suspend();
        <span class="hljs-keyword">break</span>;
    <span class="hljs-keyword">default</span>:
        knock_input_early_suspend();
        <span class="hljs-keyword">break</span>;
    }
    
    <span class="hljs-keyword">return</span> <span class="hljs-number">0</span>;
    

    }

    static struct notifier_block knock_input_fb_notifier = {
    .notifier_call = knock_input_event_notify, //回调接口
    };

    static int xxxx_probe(struct platform_device *pdev){
    …..
    fb_register_client(&knock_input_fb_notifier); //注册notify
    …..
    }

    • 1
    • 2
    • 3
    • 4
    • 5
    • 6
    • 7
    • 8
    • 9
    • 10
    • 11
    • 12
    • 13
    • 14
    • 15
    • 16
    • 17
    • 18
    • 19
    • 20
    • 21
    • 22
    • 23
    • 24
    • 25
    • 26
    • 27
    • 28
    • 29
    • 30
    • 31
    • 32
    • 33
    • 34
    • 35
    • 36
    • 37
    • 38
    • 39
    • 40
    • 41
    • 42
    • 43
    • 44
    • 45
    • 46
    • 47
    • 48
    • 49
    • 50
    • 51
    • 52




    展开全文
  • wait notify

    2017-11-04 19:10:27
    title:wait notifydate:2017年10月30日23:15:29一.wait notify等方法简单介绍在Object.java中,定义了wait(), notify()和notifyAll()等接口。wait()的作用是让当前线程进入等待状态,同时,wait()也会让当前线程释放...
  • Notify Server

    2019-06-25 04:49:30
    Notify Server:专门针对Ajax做的一个Socket异步处理HTTP请求。模拟p2p的即时通讯质量;良好嵌入Merssenger框架;比AJAX.NET配合WebService有更好的伸缩性。 转载于:...
  • 关于MFC的ON_NOTIFY、ON_NOTIFY_REFLECT、ON_NOTIFY_REFLECT_EX ON_NOTIFY : Comes from a child control to the parent. This macro goes in the parent’s message map. ON_NOTIFY是子控件把消息发送给父窗口,由...
  • Bootstrap Notify

    2017-08-19 17:10:00
    https://github.com/mouse0270/bootstrap-notify $.notify('Hello World', { offset: { x: 50, y: 100 } });   转载于:https://www.cnblogs.com/sp007/p/7397230.html
  • panic notify

    2017-07-02 23:21:15
    如果需要在linux kernel panic的时候保存某些信息,可以使用panic notify。这个notifier head的名称是 panic_notifier_list,在kernel.h中声明。这是一个atomic notifier,使用atomic_notify_chain_register注册...
  • ON_NOTIFY : Comes from a child control to the parent. This macro goes in the parent’s message map. ON_NOTIFY是子控件把消息发送给父窗口,由父窗口来处理消息,消息处理函数在父控件的类里面。 ON_NOTIFY_...
  • notify的唤醒

    2020-01-09 14:29:22
    1:notify执行后,该线程不会立刻结束,也并没有让出CUP,而是要执行完notify后面的内容后才结束(或者被阻塞,被阻塞时让出了CUP); 2:notify执行后,由于notify是对某一对象上锁,所以该notify只能唤醒同一个锁...
  • Condition Variable notify_one notify_all

    千次阅读 2016-10-31 15:55:44
    多线程中条件变量的notify_one() 与 notify_all() wait 和 notify (notify_one/notify_all) 配对使用。  “Notify one: Unblocks one of the threads currently waiting for this condition.If no threads are ...
  • <div><p>I have the following notify_ methods in my strategy on my <strong>paper</strong> account to log events. <pre><code> def notify_order(self, order): print(f"notify_order Status: {order....
  • ERROR: Received close_notify during handshake

    万次阅读 2019-06-01 22:19:51
    Android Studio GradleSync一直失败,提示:ERROR: Received close_notify during handshake 看https://stackoverflow.com/questions/59408006/error-received-close-notify-during-handshake 说是ssl连接的问题,...
  • c++ notify_one()和notify_all() 误区

    万次阅读 2019-07-19 20:15:57
    notify_one()(随机唤醒一个等待的线程)和notify_all()(唤醒所有等待的线程),在c++里的实现原理和java不太一致,java必须在锁内(与wait线程一样的锁)调用notify。但c++是不需要上锁调用的,如果在锁里调用,...
  • wait和notify

    2019-04-01 10:57:00
    ① wait() 与 notify/notifyAll 方法必须在同步代码块中使用  synchronized修饰的同步代码块或方法里面调用wait() 与 notify/notifyAll()方法 ② wait() 与 notify/notifyAll() 区别  当执行wait()时,线程会把...
  • android ble notify

    2017-11-17 00:45:30
    ble notify route
  • <div><p>I always get this error (some seconds after a successful notify). What is it? <pre><code> gulp-notify: [Error in notifier] Error in plugin 'gulp-notify' Message: Command failed: ...
  • Java wait() notify()方法使用实例讲解

    万次阅读 多人点赞 2015-04-08 14:54:37
    1)wait()、notify()和notifyAll()方法是本地方法,并且为final方法,无法被重写。  2)调用某个对象的wait()方法能让当前线程阻塞,并且当前线程必须拥有此对象的monitor(即锁,或者叫管程)  3)调用某个对象的...
  • vrrp_notify_fifo /tmp/vrrp_notify_fifo vrrp_notify_fifo_script /etc/keepalived/scripts/sample_notify_fifo.sh <p>I am using the same example from the doc/samples/sample_notify_fifo.sh <p>The script is ...
  • wait和notify区别

    2020-12-13 23:01:22
    wait和notify区别 wait和notify都是Object中的方法 wait和notify执行前,线程都必须获得对象锁 wait的作用是使当前线程进行等待 notify的作用是通知其他等待当前线程的对象锁的线程
  • 主要介绍了 java notify和notifyAll的对比的相关资料,需要的朋友可以参考下
  • wait notify notifyAll

    2020-03-14 16:27:51
    wait 该方法用来将当前线程释放锁,并且进入wait pool,此时没有资格争抢锁。 notify(): ...调用任意对象的notify()方法则导致因调用该对象的 wait()方法而阻塞的线程中随机选择的一个解除阻塞(...
  • 一文详解wait与notify

    万次阅读 2020-05-28 14:49:29
    1)使用wait/notify实现线程间的通信。 2)生产者/消费者模式的实现。 3)方法join的使用。 4)ThreadLocal类的使用。
  • wait与notify

    2019-04-17 23:35:35
    wait//释放锁并开始等待, 此线程...notify会随机唤醒一个对应monitor的wait list中的线程(此线程仍然需要拿到monitor后才能继续运行) from《实战Java高并发程序设计》p44, shizhansynchronized WaitNotify.java ...
  • ** 解决办法: ...import Notify from '../../miniprogram_npm/@vant/weapp/notify/notify'; Page({ data: {}, //btnSub是事件名 btnSub() { Notify({ type: 'success', message: '通知'}); } }

空空如也

空空如也

1 2 3 4 5 ... 20
收藏数 45,196
精华内容 18,078
关键字:

notify