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25 .Dt PMC_CONFIGURE_LOGFILE 3
28 .Nm pmc_configure_logfile ,
29 .Nm pmc_flush_logfile ,
32 .Nd log file management
38 .Fn pmc_configure_logfile "int fd"
40 .Fn pmc_flush_logfile void
42 .Fn pmc_writelog "uint32_t userdata"
44 .Fn pmc_close_logfile void
46 The functions manage logging of
51 .Fn pmc_configure_logfile
52 is used to turn on and turn off logging.
55 is a valid file handle returned by a prior call to
59 then performance events will be logged to the file corresponding
60 to the specified handle.
61 If the value of argument
63 is -1 then logging will be stopped after any pending data is flushed.
67 will force all log data queued inside the
69 driver to be written out.
73 will append a log entry containing the value of argument
79 will flush all pending log data and close
86 .Fn pmc_configure_logfile
87 may fail with the following errors:
92 driver was not able to create a helper process due to system limits
96 .Fn pmc_configure_logfile
97 was called with a log file already configured.
100 .Fn pmc_configure_logfile
101 was called with an argument of -1 without a log file being previously
104 The system encountered a memory shortage when servicing this request.
108 .Fn pmc_flush_logfile
109 may fail with the following errors:
113 .Fn pmc_flush_logfile
114 was called without a log file being previously configured.
119 may fail with the following errors:
124 was called without a log file being previously configured.
126 The system encountered a memory shortage when servicing this