C/C ++: multi-thread programming BASICS (1)

Using several articlesArticleA simple record of C and C ++ multi-thread programming BasicsProgramTo record.These chapters are organized from simple to deep,Dead dog!

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2. # Include <iostream>
4. # Include <pthread. h> // the header file is required and complies with POSIX standards to enable program porting to many platforms
8. Using NamespaceSTD;
12. # Define num_threads 5
16. Void* Say_hello (Void* ARGs)// The Running function of the thread, which must be void *. If it is not specified, a universal pointer and a universal pointer are returned.
18. {
20. Cout <"Hello ..."<Endl;
22. }
26. IntMain ()
28. {
30. Pthread_t tids [num_threads];// Define the ID variable of the thread. Multiple variables can be declared as arrays.
32. For(IntI = 0; I <num_threads; ++ I)
34. {
36. IntRet = pthread_create (& tids [I], null, say_hello, null );// The parameters are the ID of the created thread, the thread parameter, the name of the called function, and the input function parameters.
38. If(Ret! = 0)
40. {
42. Cout <"Pthread_create error: error_code ="<RET <Endl;
44. }
46. }
50. Pthread_exit (null );// Wait until the threads exit before the process ends. Otherwise, the process is forced to end and the thread may not respond;
52. }

Compile command:

G ++-lpthread-O test. out test. cpp

Specifically, calling the static library file pthread is required, and then running the test, Owen!

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1. [CPP @ node2 pthread] $./ex_create
2. Hello...
3. Hello...
4. Hello...
5. Hello...
6. Hello...
7. [CPP @ node2 pthread] $