we know that, we need to specify a start routine when we call pthread_create()
imagine that:
if we have 5 threads, do they have the same variable "i" in start routine(they share "i"), or do they have their own copy of "i"?Code:void *start_routine () { int i; for (i=0; i<10; i++) { printf ("%d\t", i); } printf ("\n"); }
It's a local variable, so it's local to each thread.
If you dance barefoot on the broken glass of undefined behaviour, you've got to expect the occasional cut.
If at first you don't succeed, try writing your phone number on the exam paper.
but they got the same place, they execute same code.
they made a copy of variables in start routine, when they entry the routine?
Each thread has a separate stack.
Local variables follow stack scoping rules.
If you dance barefoot on the broken glass of undefined behaviour, you've got to expect the occasional cut.
If at first you don't succeed, try writing your phone number on the exam paper.
