deadlock

问题 I'm trying to understand await and async . It works very well. But now I have a deadlock. I've called ConfigureAwait with false , like in this article, but my code is still blocking. Here's a little snippet of my code: private void button1_Click(object sender, EventArgs e) { var result = HeavyWorkAsync().Result; richTextBox1.AppendText(result); } private string HeavyWork() { for (var index = 0; index < 1000; index++) { Task.Delay(10).Wait(); } return "finished"; } private async Task<string>

问题 I am implementing an asynchronous log writing mechanism for my project's multithreaded application. Below is the partial code of the part where the error occurs. void CTraceFileWriterThread::run() { bool fShoudIRun = shouldThreadsRun(); // Some global function which decided if operations need to stop. Not really relevant here. Assume "true" value. while(fShoudIRun) { std::string nextMessage = fetchNext(); if( !nextMessage.empty() ) { process(nextMessage); } else { fShoudIRun =

问题 I get this error Message: ORA-00060: deadlock detected while waiting for resource even though I am not using any explicit table locking and my isolation level is set to READ COMMITTED . I use multiple threads over the Spring TransactionTemplate with default propagation. In my business logic the data is separated so that two transaction will never have the same set of data. Therefor I don't need SERIALIZABLE Why can Oracle detect a deadlock? Deadlocks are impossible in this constellation, or

问题 my application is having deadlock issue where there is a possibility of conflict from three different sides: 1) MySQL database event - that executed every minutes and run couple of update commands in transactions. 2) Background task = that run every seconds and run couple of insert/update commands in transaction.(doctrine) 3) Main FrontEnd API call - based on incoming request, run insert/update commands. Because of high traffic, request density, this is also of high density.(doctrine) So,

问题 Here's my implementation of the Philosopher dinner concurrence problem: 5 philosophers where each one extends Thread: the problem is everytime the program finish inside a deadlock. I tried different solutions but no one fixed the problem. maybe someone can give me an help. this is my program: import java.util.concurrent.ThreadLocalRandom; class Fork { public static final char FORK = '|'; public static final char NO_FORK = ' '; int id; public Fork(final int id) { this.id = id; } } class

问题 Transaction (Process ID 588) was deadlocked on lock resources with another process and has been chosen as the deadlock victim. Rerun the transaction. i get that error when i try to update data from datagridview how can i solve it or what is the problem with my update code and thank you , private void Button2_Click(object sender, EventArgs e) { using (SqlConnection con = new SqlConnection("***")) { con.Open(); for (int i = 0; i < dataGridView1.Rows.Count - 1; i++) { // INSERT command: using

问题 I made a circular buffer with multiple clients writing (in the end I want them to write messages of different size) into a buffer. The server reads them out. It's based on the code in a consumer/producer problem: #include <stdio.h> #include <malloc.h> #include <string.h> #include <pthread.h> #include <unistd.h> #define BUFFER_SIZE 10 struct cBuf{ char *buf; int size; int start; int end; pthread_mutex_t mutex; pthread_cond_t buffer_full; pthread_cond_t buffer_empty; }; struct cBuf cb; void buf

问题 I'm trying to create a (Weblogic) WAR deployment for a Apache Camel based project which runs fine on tomcat embedded. However when I start the server, I'm noticing a deadlock in LRUCacheFactory. The reported error is shown below: Found one Java-level deadlock: ============================= "Camel Thread #0 - LRUCacheFactory": waiting to lock monitor 0x85ec85a8 (object 0xb30c5c28, a weblogic.utils.classloaders.ChangeAwareClassLoader), which is held by "[STANDBY] ExecuteThread: '43' for queue:

问题 Why would a process running a transaction at RC isolation level hold an IX page lock if it is already running a select statement on another table? I mean, i thought that locks are released when the statement finishes (that is why we could have non-repeatable reads). Here's the deadlock xml: <deadlock-list> <deadlock victim="process5cd048"> <process-list> <process id="process5cd048" taskpriority="0" logused="10000" waittime="2220" schedulerid="3" kpid="5764" status="suspended" spid="62" sbid=

问题 I have the following thread dump (see below) and I am not sure whether I have a deadlock. Can anyone please advise? 2013-03-22 08:52:59 Full thread dump Java HotSpot(TM) 64-Bit Server VM (23.7-b01 mixed mode): "Attach Listener" daemon prio=10 tid=0x00007f68e8001000 nid=0x41bd waiting on condition [0x0000000000000000] java.lang.Thread.State: RUNNABLE Locked ownable synchronizers: - None "http-bio-8080-exec-10" daemon prio=10 tid=0x00007f68840a2800 nid=0x41b5 in Object.wait()