Pthread scheduler scope variables? I read that their is 1:1 mapping of user and kernel thread in linux What is the difference between PTHREAD_SCOPE_PROCESS & PTHREAD_SCOPE_SYSTEM in linux if kernel is considering every thread like a process then there will not be any performance difference? Correct me I'm wrong

According to the man page:

> Linux supports PTHREAD_SCOPE_SYSTEM, but not PTHREAD_SCOPE_PROCESS

And if you take a look at the glibc's implementation:


0034 /* Catch invalid values. */
0035 switch (scope)
0036 {
0037 case PTHREAD_SCOPE_SYSTEM:
0038 iattr->flags &= ~ATTR_FLAG_SCOPEPROCESS;
0039 break;
0040
0041 case PTHREAD_SCOPE_PROCESS:
0042 return ENOTSUP;
0043
0044 default:
0045 return EINVAL;
0046 }