locking

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C# Lock statements

When a thread tries to enter a critical section and obtain a lock, what is it actually doing? I\'m asking this because I usually create an object (of type object) which will serve for locking purpose[详细]

2023-03-28 13:30 分类：问答
C# Locking mechanism - write only locking

In continuation for my latest ponders about locks in C# and .NET, Consider the following scenario: I have a class which contains a specific collection (for this example, i\'ve used a Dictionary<s[详细]

2023-03-28 05:48 分类：问答
Lock Sharing Between Classes

I am trying to find the best practice for sharing a lock file between multiple classes. Before this I was putting multiple functions inside the same class, so they could share a mutual lock file and a[详细]

2023-03-27 20:30 分类：问答
Does CFRETURN in a CFLOCK properly release the lock?

I am writing some code with CFLOCK tags, and am at a point where my code would return somewhere within a CFLOCK.Example:[详细]

2023-03-27 08:33 分类：问答
How do I prevent a PHP script from running in the same time?

I am using a script that sync data betweens two databases (locally to an hosted domain). I made the sync occurs when someone log out from the CMS. Unfortunatly, I have seen cases when two logout happe[详细]

2023-03-27 06:18 分类：问答
Transfer a lock to a spawned thread in Java

Is there a way to do something like this in Java (possibly using Lock instead of synchronized): synchronized(lock) {[详细]

2023-03-27 04:20 分类：问答
SQL semantics for "FOR UPDATE" & "JOIN"

I\'d like to understand the exact semantics of using \"FOR UPDATE\" in connection with \"JOIN\". Does it just lock all the rows that were effectively used to build the end result? Does it do something[详细]

2023-03-26 19:41 分类：问答
Better to lock on a shared resource, or have a thread to fulfill requests?

I have a shared memory pool from which many different threads may request an allocation. Requesting an allocation from this will occur a LOT in every thread, however the amount of thr开发者_开发问答ea[详细]

2023-03-26 18:37 分类：问答
Java: How to read a locked up thread dump

Can anyone help me understand how I should read this stacktrace? \"Task-Thread-for-com.mchange.v2.async.ThreadPerTaskAsynchronousRunner@488cf1f1\" daemon prio=6 tid=0x000000000880f000 nid=0x644 runna[详细]

2023-03-26 12:59 分类：问答
How to do a database lock in AppEngine (GAE)?

In GAE, I\'ve got a table full of \"one offs\" -- things like \"last-used sequence number\" and the like that don\'t really fall into other tables.It\'s a simple String-key with String-value pair.[详细]

2023-03-26 11:57 分类：问答