This question already has answers here: Closed 11 years ago. Possible Duplicate: Force Oracle to return TOP N rows with SKIP LOCKED
I made the following sample program to play with boost threading: #pragma once #include \"boost\\thread\\mutex.hpp\"
I have a 2d Array of memory. I have multiple threads reading and writing to single elements in the array spontaneously, arbitrarily, and concurrently.
We have a use case where we need to acquire a lock and send a notification if acquiring the lock takes more than 5 mins. We should still be waiting for the lock forever.
Given a Cocoa NSLocking object (like an N开发者_如何学运维SLock) and some non-trivial code to be executed while the lock is held:
Please note that, I don\'t have any control over the target file. Some other process is writing that file. I just want to copy the file when other process completes the write operation.
If I am trying to acquire a lock in Oracle 10g (e.g. with SELECT...FOR UPDATE), there is a NOWAIT option to get an error when the row is locked, instead of the query just hanging. Is there a way to ac
So I had some shared_mutex and done this: boost::upgrade_lock<boost::shared_mutex> lock(f->mutex);开发者_C百科
I need to synchronize my user table with repository(the other DB) during application startup. I have two Tomcat nodes with Apache mod_jk. So when I restart both of them I make double inserts and doubl
I have a sqlite3 database on some system which I need to d开发者_StackOverflow中文版ownload during ongoing operation. Stopping or pausing the accessing processes is not an option. So as far as I under
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