CODEWITHSUNDEEP
cmultithreadingpthreads
java.begginer
java.begginer

Reputation: 59

Can I reuse pthread_t and pthread_attr_t for new diferent thread of already executed thread consecutively?

I want to execute 2 different threads consecutively without using pthread_join, is it alright? or do i really have to declare new thread_t kind of like this: 

pthread_create(&th,&thread_attr,shtdwn,(void*)&lpBuffer);
pthread_create(&th,&thread_attr,Run,(void*)&args);

And also I do not need to wait either thread to finish. Your help would be greatly appreciated thanks!

Upvotes: 1

Views: 859

Answers (1)

kaylum
kaylum

Reputation: 14046

Both the pthread_t and pthread_attr_t variables can be re-used for each pthread_create call. In fact, it is common for the pthread_attr_t to be reused like that. However, re-using a pthread_t variable is a bit more unusual as that value is usually stored to be used for subsequent pthread operations on the thread (such as pthread_join).

Also, the pthread_attr_t can be NULL in which case the default attributes will be used. However the pthread_t argument must not be NULL. From the pthread_create manual:

The attr argument points to a pthread_attr_t structure whose contents are used at thread creation time to determine attributes for the new thread; this structure is initialized using pthread_attr_init(3) and related functions. If attr is NULL, then the thread is created with default attributes.

Before returning, a successful call to pthread_create() stores the ID of the new thread in the buffer pointed to by thread;

Upvotes: 3

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