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ttttwwrriittee00() -- Terminal-Device Routine

#iinncclluuddee <ssyyss/iioo.hh>
#iinncclluuddee <ssyyss/ttttyy.hh>
vvooiidd
ttttwwrriittee00(_t_p, _i_o_p, _f_u_n_c_1, _a_r_g_1, _f_u_n_c_2, _a_r_g_2)
TTTTYY *_t_p;
IIOO *_i_o_p;
iinntt (*_f_u_n_c_1)(), _a_r_g_1, (*_f_u_n_c_2)(), _a_r_g_2;

ttttwwrriittee00() moves data  to an output queue associated with  _t_p, from the I/O
area referenced by _i_o_p. If an error occurs, it sets field uu.uu_eerrrroorr.

The  following behavior  makes  it possible  to  prevent deadlocks  between
coupled drivers, such as master-slave pseudoterminal pairs.  If _f_u_n_c_1 or is
not NULL, the function call (*_f_u_n_c_1)(_a_r_g_1) is performed whenever ttttwwrriittee00()
is about to sleep.  Likewise, if _f_u_n_c_2 is not NULL, (*_f_u_n_c_2)(_a_r_g_2)       is
performed whenever ttttwwrriittee00() is about to sleep.

ttttwwrriittee(_t_p, _i_o_p) is equivalent to ttttwwrriittee00(_t_p, _i_o_p, 00, 00, 00, 00).

_S_e_e _A_l_s_o
tteerrmmiinnaall-ddeevviiccee rroouuttiinneess

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