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# 1  
Old 03-20-2011
Thread function local variables
As I know threads share the memory. But, what about the local variables in the thread function? if i call multiple threads would they allocate seperate local variables for themselves?

like
Code:
thread_func()
{
   int i, j;
   string...

}

Are the above local variables defined for each of the threads? in that case if i call threads simultaneously, their local variables will not conflict
# 2  
Old 03-20-2011
Quote:
Originally Posted by saman_glorious
As I know threads share the memory. But, what about the local variables in the thread function? if i call multiple threads would they allocate seperate local variables for themselves?

like
Code:
thread_func()
{
   int i, j;
   string...

}

Are the above local variables defined for each of the threads? in that case if i call threads simultaneously, their local variables will not conflict
Every thread has its own stack. Hence, in your example, i and j would be hence "private to the threads" and thus their local variables "would not conflict".

Of course, if another thread happens to know the address of variable i (or j) of a thread, it may access/modify it. But that's not an usual pattern.

HTH, Loïc
This User Gave Thanks to Loic Domaigne For This Post:
saman_glorious
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