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Text File  |  2002-10-03  |  2.6 KB  |  67 lines
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  4. uuuuccccoooonnnntttteeeexxxxtttt((((5555))))                                                        uuuuccccoooonnnntttteeeexxxxtttt((((5555))))
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  8. NNNNAAAAMMMMEEEE
  9.      _uuuu_cccc_oooo_nnnn_tttt_eeee_xxxx_tttt - user context
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  11. SSSSYYYYNNNNOOOOPPPPSSSSIIIISSSS
  12.      _####_iiii_nnnn_cccc_llll_uuuu_dddd_eeee _<<<<_uuuu_cccc_oooo_nnnn_tttt_eeee_xxxx_tttt_...._hhhh_>>>>
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  14. DDDDEEEESSSSCCCCRRRRIIIIPPPPTTTTIIIIOOOONNNN
  15.      The _uuuu_cccc_oooo_nnnn_tttt_eeee_xxxx_tttt structure defines the context of a thread of control within
  16.      an executing process.
  17.  
  18.      This structure includes at least the following members:
  19.  
  20.      ucontext_t *uc_link
  21.      sigset_t    uc_sigmask
  22.      stack_t     uc_stack
  23.      mcontext_t  uc_mcontext
  24.  
  25.      _uuuu_cccc______llll_iiii_nnnn_kkkk is a pointer to the context that is to be resumed when this
  26.      context returns.  If _uuuu_cccc______llll_iiii_nnnn_kkkk is equal to 0, then this context is the main
  27.      context, and the process exits when this context returns.  The _uuuu_cccc______llll_iiii_nnnn_kkkk
  28.      field is only meaningful for contexts created using _mmmm_aaaa_kkkk_eeee_cccc_oooo_nnnn_tttt_eeee_xxxx_tttt.
  29.  
  30.      _uuuu_cccc______ssss_iiii_gggg_mmmm_aaaa_ssss_kkkk defines the set of signals that are blocked when this context
  31.      is active (see _ssss_iiii_gggg_pppp_rrrr_oooo_cccc_mmmm_aaaa_ssss_kkkk(2)).
  32.  
  33.      _uuuu_cccc______ssss_tttt_aaaa_cccc_kkkk defines the stack used by this context (see _ssss_iiii_gggg_aaaa_llll_tttt_ssss_tttt_aaaa_cccc_kkkk(2)).
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  35.      _uuuu_cccc______mmmm_cccc_oooo_nnnn_tttt_eeee_xxxx_tttt contains the saved set of machine registers and any
  36.      implementation specific context data.  Portable applications should not
  37.      modify or access _uuuu_cccc______mmmm_cccc_oooo_nnnn_tttt_eeee_xxxx_tttt.
  38.  
  39. SSSSEEEEEEEE AAAALLLLSSSSOOOO
  40.      getcontext(2), sigaction(2), sigaltstack(2), sigprocmask(2),
  41.      makecontext(3C)
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  63.                                                                         PPPPaaaaggggeeee 1111
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