I pasted some code about Java concurrency:Why does return value; need to be synchronized???Is the return statement not atomic??
I've found in our project's code the following implementation of double-lock checking:From my point of view, this is the wrong implementation due to the absence of guarantees that different threads will see the freshest value of the IsInitialized property.
race divides operations on an iterable automatically into threads. For instance,would automatically divide the sum of the 2000-long array into 4 threads. However, benchmarks show that this is much slower than if race were not employed. This happens even if you make the array bigger. This happens even as the...
Should we synchronize on writing strings? Since string is immutable we will never get inconsistent state between write and read from the 2 different threads, right?
I am trying to write an observer pattern using a timer class which invoke its subscribers at a given interval. All while trying to understand the concept of promises in Perl6.
I wrote a grep-like program in perl6, and now I made it into parallel processing. But I ran into some problem: even with the same command line the program sometimes succeeds, and sometimes fails. When it succeeds, things looks just normal to me. When it fails, I don't know why...
Is there ever any harm in making a variable "volatile" in Java if it doesn't actually need to be marked volatile? ... or is it just "unnecessary" as I have often read.
Using cout in multiple threads might result in interleaved output. So I tried to protect cout with a mutex.