pthread_equal - compare thread IDs
int pthread_equal(pthread_t t1, pthread_t t2);
Compile and link with -pthread.
The pthread_equal() function compares two thread identifiers.
If the two thread IDs are equal, pthread_equal() returns a nonzero value;
otherwise, it returns 0.
This function always succeeds.
For an explanation of the terms used in this section, see attributes(7).
The pthread_equal() function is necessary because thread IDs should be
considered opaque: there is no portable way for applications to directly
compare two pthread_t values.
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