the code is as follows: import static java.lang.System.out; ** * * * @author *** * @create 2018-11-13 19:48 * public class Test0001 { public static Object OBJ = new Object(); public static int i; public static class MyThread1 exte...
the child thread interrupted, resets this thread to the interrupted state after catchException. Why is the state obtained in the last line of the code still false? public class TheadStatusTest { public static void main(String[] args) throws Inter...
when any thread X executes the wait () and notify () methods on any thread Y, it needs to acquire the lock first. it is said that the locking mechanism is to solve the critical resource problem, so does it allow threads to start and pause access to any ...
Thread safety of assignment statements in java is int a = 1 thread safe? Is int b = 2; a = b thread safe? Object c = new Object () is thread safe? the answer I found in my blog is that the first thread is safe, the second doesn t know, and the t...
from a thread and process point of view, a process is the smallest unit of resource allocation, and a thread is the smallest unit of independent scheduling. multiple threads in the same process can execute concurrently, sharing process resources. Thre...
Why not provide semaphores directly in RT,CPP11? Instead, it can be implemented jointly with mutexes and conditional variables, for what consideration? ...
spin locks are easy to understand, which is constantly polling, so what is the mechanism of mutexes? What are the drawbacks of this mechanism that make it better to use spin locks in some situations? ...
when I see the conditional variables section of CPP11, I find that all conditional variables are used in conjunction with locks, but at this time they all use unique_lock instead of lock_guard,. Can you explain that? ...
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the following error occurred while building the app application Can t retrieve the Gradle executable. Build step Invoke Gradle script marked build as failure gradle gradle ...
react-native executes react-native run-android to report Error: more than one library with package name com.google.android.gms.license error, as shown in figure ...
Xiaobai is currently in the pit when he uses jenkins, for the first time. the problem is that the jenkins system management error is reported as follows. The operation before the error is to install a plug-in and then restart it. How to solve this prob...
The code has more than 3, 000 lines, and many if else are careful and error-prone every time they make a version judgment. Are there any optimization ideas and methods? The code cannot be copied and the smart photo is taken . ...