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deadlock

How to avoid MySQL ‘Deadlock found when trying to get lock; try restarting transaction’

One easy trick that can help with most deadlocks is sorting the operations in a specific order. You get a deadlock when two transactions are trying to lock two locks at opposite orders, ie: connection 1: locks key(1), locks key(2); connection 2: locks key(2), locks key(1); If both run at the same time, connection 1 … Read more

Categories MySQL Tags deadlock, mysql

C++ terminate called without an active exception

When a thread object goes out of scope and it is in joinable state, the program is terminated. The Standard Committee had two other options for the destructor of a joinable thread. It could quietly join — but join might never return if the thread is stuck. Or it could detach the thread (a detached … Read more

Categories C++ Tags c++, c++11, deadlock, multithreading

What’s the difference between deadlock and livelock?

Taken from http://en.wikipedia.org/wiki/Deadlock: In concurrent computing, a deadlock is a state in which each member of a group of actions, is waiting for some other member to release a lock A livelock is similar to a deadlock, except that the states of the processes involved in the livelock constantly change with regard to one another, … Read more

Categories multithreading Tags deadlock, livelock, multithreading, pthreads

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