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/ IRIX Base Documentation 2001 May / SGI IRIX Base Documentation 2001 May.iso / usr / share / catman / p_man / cat3b / sigblock.z / sigblock
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Text File  |  1998-10-20  |  2.9 KB  |  67 lines
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  4. SSSSIIIIGGGGBBBBLLLLOOOOCCCCKKKK((((3333BBBB))))                                                      SSSSIIIIGGGGBBBBLLLLOOOOCCCCKKKK((((3333BBBB))))
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  8. NNNNAAAAMMMMEEEE
  9.      sigblock - block signals from delivery to process (4.3BSD)
  10.  
  11. SSSSYYYYNNNNOOOOPPPPSSSSIIIISSSS
  12.      ####iiiinnnncccclllluuuuddddeeee <<<<ssssiiiiggggnnnnaaaallll....hhhh>>>>
  13.  
  14.      iiiinnnntttt ssssiiiiggggbbbblllloooocccckkkk((((iiiinnnntttt mmmmaaaasssskkkk))));;;;
  15.  
  16.      mmmmaaaasssskkkk ==== ssssiiiiggggmmmmaaaasssskkkk((((iiiinnnntttt ssssiiiiggggnnnnuuuummmm))));;;;
  17.  
  18.      To use any of the BSD signal routines (_k_i_l_l(3B), _k_i_l_l_p_g(3B),
  19.      _s_i_g_b_l_o_c_k(3B), _s_i_g_n_a_l(3B), _s_i_g_p_a_u_s_e(3B), _s_i_g_s_e_t_m_a_s_k(3B), _s_i_g_s_t_a_c_k(2B),
  20.      _s_i_g_v_e_c(3B)) you must either
  21.  
  22.      1) #define ____BBBBSSSSDDDD____SSSSIIIIGGGGNNNNAAAALLLLSSSS or ____BBBBSSSSDDDD____CCCCOOOOMMMMPPPPAAAATTTT before including <_s_i_g_n_a_l._h>, or
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  24.      2) specify one of them in the compile command or makefile:
  25.  
  26.           cc -D_BSD_SIGNALS -o prog prog.c
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  29. DDDDEEEESSSSCCCCRRRRIIIIPPPPTTTTIIIIOOOONNNN
  30.      _s_i_g_b_l_o_c_k causes the signals specified in _m_a_s_k to be added to the set of
  31.      signals currently being blocked from delivery.  Signals are blocked if
  32.      the corresponding bit in _m_a_s_k is a 1 (numbering the bits from 1 to 32);
  33.      the macro _s_i_g_m_a_s_k is provided to construct the mask for a given _s_i_g_n_u_m.
  34.  
  35.      It is not possible to block SSSSIIIIGGGGKKKKIIIILLLLLLLL, SSSSIIIIGGGGSSSSTTTTOOOOPPPP, or SSSSIIIIGGGGCCCCOOOONNNNTTTT; this
  36.      restriction is imposed silently by the system.
  37.  
  38. RRRREEEETTTTUUUURRRRNNNN VVVVAAAALLLLUUUUEEEE
  39.      The previous set of masked signals is returned.
  40.  
  41. SSSSEEEEEEEE AAAALLLLSSSSOOOO
  42.      kill(3B), sigvec(3B), sigsetmask(3B), signal(5).
  43.  
  44. WWWWAAAARRRRNNNNIIIINNNNGGGG ((((IIIIRRRRIIIIXXXX))))
  45.      The 4.3BSD and System V signal facilities have different semantics.
  46.      Using both facilities in the same program is ssssttttrrrroooonnnnggggllllyyyy ddddiiiissssccccoooouuuurrrraaaaggggeeeedddd and
  47.      will result in unpredictable behavior.
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  63.                                                                         PPPPaaaaggggeeee 1111
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