Deadlock and deadlock detection
1, What is a deadlock
For example, if thread a occupies resource 1, thread b occupies resource 2, thread b needs resource 1 and thread a needs resource 2, a deadlock will occur
In the deadlock solution, log and gdb debugging can be used when the number of threads is small log and gdb cannot be used to solve the problem of too many thre ...
Posted by pentinat on Thu, 10 Mar 2022 17:25:19 +0100
Principles of index creation and design
1. Declaration and use of index
1.1 classification of index
MySQL indexes include general index, unique index, full-text index, single column index, multi column index and spatial index.
In terms of functional logic, there are four kinds of indexes: ordinary index, unique index, primary key index and full-text index.
According to the physical i ...
Posted by micbox on Thu, 10 Mar 2022 17:32:18 +0100
Follow the compilation principle and the main process to realize "printing 1 + 1 results"
Demo prototype project that follows the compilation principle and main process to print 1 + 1 Results
Project introduction
Printing 1 + 1 results is so complicated that it is not a dazzling skill, but only for simple display: 1. Lexical analyzer; 2. Parser; 3. Script compiler; 4. There are four processes for compiling executors, because the ...
Posted by Big_Ad on Thu, 10 Mar 2022 20:14:59 +0100
ffmpeg multi-threaded simple player-carding of main functions
Mainly the next few functions
First is the basic definition of the main function
VideoState *is;
is = av_mallocz(sizeof(VideoState));
if(SDL_Init(SDL_INIT_VIDEO | SDL_INIT_AUDIO | SDL_INIT_TIMER)) {
fprintf(stderr, "Could not initialize SDL - %s\n", SDL_GetError());
exit(1);
}
is->pictq_mutex = SDL_CreateMutex();
is-> ...
Posted by reece_1989 on Thu, 10 Mar 2022 19:27:05 +0100
[JAVA refined into immortality] magic chapter -- object oriented ② (inheritance, construction method, rewriting, overloading)
🔎 This is JAVA Chengxian road. Pay attention to my learning JAVA and don't get lost 👍 If it helps you, give the blogger a free praise to show encouragement Welcome 🔎 give the thumbs-up 👍 Comment collection ⭐ ️
This chapter introduces the construction method, inheritance, rewriting, overloading and creation method in detail. The whole arti ...
Posted by bsamson on Thu, 10 Mar 2022 21:04:59 +0100
Learning content Es6
catalogue
1, Incomplete deconstruction
2, Deconstruction assignment of object
3, Operator review and extension
1, Incomplete deconstruction
1. If the variable name is less than the value on the right side of the equal sign and there is no other special treatment, the extra value will be ignored
2. There are more variable names than the v ...
Posted by Sakesaru on Thu, 10 Mar 2022 17:14:30 +0100