pthread_equal(3)

1PTHREAD_EQUAL(3)           Linux Programmer's Manual          PTHREAD_EQUAL(3)
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NAME

6       pthread_equal - compare thread IDs
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SYNOPSIS

9       #include <pthread.h>
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11       int pthread_equal(pthread_t t1, pthread_t t2);
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13       Compile and link with -pthread.
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DESCRIPTION

16       The pthread_equal() function compares two thread identifiers.
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RETURN VALUE

19       If  the  two  thread  IDs  are equal, pthread_equal() returns a nonzero
20       value; otherwise, it returns 0.
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ERRORS

23       This function always succeeds.
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ATTRIBUTES

26       For an  explanation  of  the  terms  used  in  this  section,  see  at‐
27       tributes(7).
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29       ┌────────────────┬───────────────┬─────────┐
30       │Interface       │ Attribute     │ Value   │
31       ├────────────────┼───────────────┼─────────┤
32       │pthread_equal() │ Thread safety │ MT-Safe │
33       └────────────────┴───────────────┴─────────┘

CONFORMING TO

35       POSIX.1-2001, POSIX.1-2008.
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NOTES

38       The  pthread_equal() function is necessary because thread IDs should be
39       considered opaque: there is no portable way  for  applications  to  di‐
40       rectly compare two pthread_t values.
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COLOPHON

46       This  page  is  part of release 5.10 of the Linux man-pages project.  A
47       description of the project, information about reporting bugs,  and  the
48       latest     version     of     this    page,    can    be    found    at
49       https://www.kernel.org/doc/man-pages/.
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53Linux                             2015-08-08                  PTHREAD_EQUAL(3)