I am writing a program in Java. The picture is self-explanatory - The main method spawns three threads. The SAX processor processes the input XML file, generates JAXB objects and puts them in guava cache. Guava cache is handled by another thread. Whenever any object comes into the cache, this...
I just discovered the following construct in our codebase (simplified in the example):There are multiple threads, one calling someLoop() while the others call setKeepGoing() and/or setDoAdditionalStuff().
Code is as followsWhen executed, I start seeing values likeas expected, and it goes until I see:But then after a short while (10 - 20 seconds or so) MacOS decides to restart. What is the cause for the restart I am seeing here? The main thread throwing an exception, but...
Original Question:I got an array of structs and filling it in a separate thread while reading it in main thread:
To my understanding, Following code should generate 4 clones of the local ProcessingThread running, producing an output:
I have simple code: first thread pushes std::strings to the std::list, and second thread pops std::strings from this std::list. All std::lists operations are protected with std::mutex m. This code permanently prints error to console: "Error: lst.begin() == lst.end()".
I have a strange issue with this code:As I expect because boolean test is not volatile Thread1 uses local cache value of test and when Thread2 changes it to true Thread1 won't do anything. But when I put a breakpoint at the line System.out.println("Prints when put a breakpoint here!"); It...
Do threads blocked by a std::mutex::lock() or a condition variable sleep in a way that frees the core for other processes, or am I required to manually put these threads to sleep? And if true, would std::mutex::try_lock() allow for a way to spin the thread without sleeping?
I have a C# static class accessed from multiple threads. Two questions:Usage of static class from different threads:
If I have an object which is shared between threads, it seems to me that every field should be either final or volatile, with the following reasoning: