问题描述
我看到了以下有关如何防止死锁的片段。现在我的问题是，通过应用死锁预防或理发师问题，现实生活场景中的哪些流程将是有用的。 我的问题是，理论上我有点理解它，但我需要在现实生活中理解它，而不是理发师的问题。
我们每天使用哪些流程可以防止出现这 2 个同步问题。 我只想看看另一个例子，而不是理发师或餐饮问题。
/**
* Adapted from The Java Tutorial and converted to c#
*/
/**
* sample of how NOT to write multi-threaded programs.
**/
public class Deadlock
{
object resource1 = "resource1";
object resource2 = "resource2";
public static void DoWork()
{
for (int i = 0; i < 3; i++)
{
Console.WriteLine("Working thread...");
Thread.Sleep(100);
}
}
public static void main(String[] args)
{
//These are the two resource
//we'll try to get locks for
//first thread.
//lock resource1 then resource2
Thread t1 = new Thread(Deadlock.DoWork)
{
//Lock resource 1
Console.WriteLine("Thread 1: locked resource 1");
//simulating some file I/O
//Basically,we just want to give the
//other thread a chance to run. Threads and deadlock
//are asynchronous things
//deadlock to happen here
}
void run()
{
try
{
Thread.Sleep(100);
}
catch (Exception e) { }
//Now wait 'till we can get a lock on resource 2
DoWork();
Console.WriteLine("Thread 1: locked resource 2");
}
// second thread.
//It tries to lock resource2 then resource1
Thread t2 = new Thread(Deadlock.DoWork)
{
//This thread locks resource 2 right away
//Then it tries to lock resource1.
//Thread 1 locked resource1,and
//won't release it till it gets a lock on resource2.
//This thread holds the lock on resource2,and won't
//release it till it gets resource1.
// Neither thread can run,//and the program freezes up.
Deadlock.DoWork(resource1){
Console.WriteLine("Thread 2: locked resource 1");
}
};
//Start the two threads.
//deadlock will occur,//and the program will enter an infinite loop.
t1.start();
t2.start();
解决方法
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