The actual action to be performed is defined by the combination of
_c_o_n_t_r_o_l and _s_t_a_t_e as follows. If _c_o_n_t_r_o_l is PPPPMMMM____LLLLOOOOGGGG____MMMMAAAANNNNDDDDAAAATTTTOOOORRRRYYYY and _s_t_a_t_e
is PPPPMMMM____LLLLOOOOGGGG____OOOONNNN, then logging is enabled. If _c_o_n_t_r_o_l is PPPPMMMM____LLLLOOOOGGGG____MMMMAAAANNNNDDDDAAAATTTTOOOORRRRYYYY
and _s_t_a_t_e is PPPPMMMM____LLLLOOOOGGGG____OOOOFFFFFFFF, then logging is disabled. If _c_o_n_t_r_o_l is
PPPPMMMM____LLLLOOOOGGGG____MMMMAAAANNNNDDDDAAAATTTTOOOORRRRYYYY and _s_t_a_t_e is PPPPMMMM____LLLLOOOOGGGG____MMMMAAAAYYYYBBBBEEEE, then subsequent advisory
controls will be honored. If the logging state prior to the request was
mandatory (on or off), the state is changed to advisory off. If the
logging state was already advisory (either on or off), it remains
unchanged. If _c_o_n_t_r_o_l is PPPPMMMM____LLLLOOOOGGGG____AAAADDDDVVVVIIIISSSSOOOORRRRYYYY and the last mandatory control
for the metric was PPPPMMMM____LLLLOOOOGGGG____MMMMAAAAYYYYBBBBEEEE, then logging is enabled or disabled as
specified by the _s_t_a_t_e argument, i.e. PPPPMMMM____LLLLOOOOGGGG____OOOONNNN or PPPPMMMM____LLLLOOOOGGGG____OOOOFFFFFFFF. When the
arguments _s_t_a_t_e and _c_o_n_t_r_o_l specify a request to change the logging
behavior, the argument _d_e_l_t_a defines the logging interval in milliseconds
to be applied to all metrics and instances identified in _r_e_q_u_e_s_t.
The result argument _s_t_a_t_u_s returns the current logging state for each of
the nominated performance metrics. There is a 1:1 correspondence between
the elements of _r_e_q_u_e_s_t and _s_t_a_t_u_s. For metrics in _r_e_q_u_e_s_t that have
_p_m_V_a_l_u_e_S_e_ts with _n_u_m_v_a_l equal to zero, the corresponding _p_m_V_a_l_u_e_S_e_t in
_r_e_s_u_l_t will contain a value for each available instance at the time of
the call. Each metric value in _s_t_a_t_u_s will have the current logging
state encoded in it. The detailed outcome of the operation for each
metric can be determined by comparing these values to that requested via
_c_o_n_t_r_o_l, _s_t_a_t_e and _d_e_l_t_a.
Macros defined in <<<<ppppccccpppp////iiiimmmmppppllll....hhhh>>>> may be used to extract the state and
logging interval from the returned metric values. PPPPMMMMLLLLCCCC____GGGGEEEETTTT____OOOONNNN returns
true if logging is on, or false if it is off; PPPPMMMMLLLLCCCC____GGGGEEEETTTT____MMMMAAAANNNNDDDD returns true
if logging is mandatory, or false if it is advisory; PPPPMMMMLLLLCCCC____GGGGEEEETTTT____IIIINNNNLLLLOOOOGGGG
returns true if the metric has been logged at least once, or false
otherwise; PPPPMMMMLLLLCCCC____GGGGEEEETTTT____AAAAVVVVAAAAIIIILLLL returns true if the metric was available from
its source the last time it was supposed to be logged, or false if it was
unavailable; and PPPPMMMMLLLLCCCC____GGGGEEEETTTT____DDDDEEEELLLLTTTTAAAA returns the current logging interval for
the metric (in milliseconds). PPPPMMMMLLLLCCCC____MMMMAAAAXXXX____DDDDEEEELLLLTTTTAAAA defines the greatest _d_e_l_t_a
that can be returned in an encoded metric value.
As a special case, when _c_o_n_t_r_o_l is PPPPMMMM____LLLLOOOOGGGG____EEEENNNNQQQQUUUUIIIIRRRREEEE, _s_t_a_t_e and _d_e_l_t_a are
ignored, and _s_t_a_t_u_s returns the current logging state of the nominated
performance metrics (this variant makes no changes to the logging state).
If the value of the logging interval is 0, either for _d_e_l_t_a in a request
to change state to PPPPMMMM____LLLLOOOOGGGG____OOOONNNN, or encoded in the value returned from
PPPPMMMM____LLLLOOOOGGGG____EEEENNNNQQQQUUUUIIIIRRRREEEE, then this corresponds to the special ``once only''
logging of metrics that appear once in the archive log, and are never
logged again.
____ppppmmmmCCCCoooonnnnttttrrrroooollllLLLLoooogggg returns zero on success.
SSSSEEEEEEEE AAAALLLLSSSSOOOO
PPPPMMMMAAAAPPPPIIII(3), ppppmmmmFFFFeeeettttcccchhhh(3), ppppmmmmllllcccc(1), ppppmmmmllllooooggggggggeeeerrrr(1) and ____ppppmmmmCCCCoooonnnnnnnneeeeccccttttLLLLooooggggggggeeeerrrr(3).
