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pthread_multi_np(3)

NAME

     pthread_multi_np, pthread_single_np -- switch between multi- and single-
     threaded scheduling modes

LIBRARY

     Reentrant C Library (libc_r, -lc_r)
     POSIX Threads Library (libpthread, -lpthread)
     1:1 Threading Library (libthr, -lthr)

SYNOPSIS

     #include <pthread_np.h>

     int
     pthread_multi_np(void);

     int
     pthread_single_np(void);

DESCRIPTION

     The pthread_single_np() function switches the process to a single-
     threaded mode, i.e., suspends all threads except the current.  The seman-
     tics of this function is similar to pthread_suspend_all_np(3).

     The pthread_multi_np() function switches the process to a multi-threaded
     mode.  The semantics of this function is similar to
     pthread_resume_all_np(3).

IMPLEMENTATION NOTES

     The pthread_single_np() function is only available in Reentrant C Library
     (libc_r, -lc_r) and POSIX Threads Library (libpthread, -lpthread).  This
     function is not implemented in 1:1 Threading Library (libthr, -lthr).

RETURN VALUES

     The pthread_multi_np() and pthread_single_np functions always return 0.

SEE ALSO

     pthread_resume_all_np(3), pthread_suspend_all_np(3)

AUTHORS

     This manual page was written by Alexey Zelkin <phantom@FreeBSD.org>.

FreeBSD 5.4		       February 13, 2003		   FreeBSD 5.4

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