* sale, use or other dealings in this Software without prior written *
* authorization. *
****************************************************************************
- * @Id: curs_trace.3x,v 1.14 2016/10/15 17:26:09 tom Exp @
+ * @Id: curs_trace.3x,v 1.16 2016/12/03 23:53:23 tom Exp @
-->
<!DOCTYPE html PUBLIC "-//W3C//DTD HTML 4.01//EN">
<HTML>
</PRE><H2><a name="h2-NAME">NAME</a></H2><PRE>
- <STRONG>_tracef</STRONG>, <STRONG>_tracedump</STRONG>, <STRONG>_traceattr</STRONG>, <STRONG>_traceattr2</STRONG>,
- <STRONG>_nc_tracebits</STRONG>, <STRONG>_tracecchar_t</STRONG>, <STRONG>_tracecchar_t2</STRONG>, <STRONG>_tracechar</STRONG>,
- <STRONG>_tracechtype</STRONG>, <STRONG>_tracechtype2</STRONG>, <STRONG>_tracemouse</STRONG>, <STRONG>trace</STRONG> - <STRONG>curses</STRONG>
- debugging routines
+ <STRONG>trace</STRONG>, <STRONG>_tracef</STRONG>, <STRONG>_traceattr</STRONG>, <STRONG>_traceattr2</STRONG>, <STRONG>_tracecchar_t</STRONG>,
+ <STRONG>_tracecchar_t2</STRONG>, <STRONG>_tracechar</STRONG>, <STRONG>_tracechtype</STRONG>, <STRONG>_tracechtype2</STRONG>,
+ <STRONG>_nc_tracebits</STRONG>, <STRONG>_tracedump</STRONG>, <STRONG>_tracemouse</STRONG> - <STRONG>curses</STRONG> debugging
+ routines
</PRE><H2><a name="h2-SYNOPSIS">SYNOPSIS</a></H2><PRE>
<STRONG>#include</STRONG> <STRONG><curses.h></STRONG>
+ <STRONG>void</STRONG> <STRONG>trace(const</STRONG> <STRONG>unsigned</STRONG> <STRONG>int</STRONG> <EM>param</EM><STRONG>);</STRONG>
+
<STRONG>void</STRONG> <STRONG>_tracef(const</STRONG> <STRONG>char</STRONG> <STRONG>*</STRONG><EM>format</EM><STRONG>,</STRONG> <STRONG>...);</STRONG>
- <STRONG>void</STRONG> <STRONG>_tracedump(const</STRONG> <STRONG>char</STRONG> <STRONG>*</STRONG><EM>label</EM><STRONG>,</STRONG> <STRONG>WINDOW</STRONG> <STRONG>*</STRONG><EM>win</EM><STRONG>);</STRONG>
+
<STRONG>char</STRONG> <STRONG>*_traceattr(attr_t</STRONG> <EM>attr</EM><STRONG>);</STRONG>
<STRONG>char</STRONG> <STRONG>*_traceattr2(int</STRONG> <EM>buffer</EM><STRONG>,</STRONG> <STRONG>chtype</STRONG> <EM>ch</EM><STRONG>);</STRONG>
- <STRONG>char</STRONG> <STRONG>*_nc_tracebits(void);</STRONG>
- <STRONG>char</STRONG> <STRONG>*</STRONG> <STRONG>_tracecchar_t(const</STRONG> <STRONG>cchar_t</STRONG> <STRONG>*</STRONG><EM>string</EM><STRONG>);</STRONG>
- <STRONG>char</STRONG> <STRONG>*</STRONG> <STRONG>_tracecchar_t2(int</STRONG> <EM>buffer</EM><STRONG>,</STRONG> <STRONG>const</STRONG> <STRONG>cchar_t</STRONG> <STRONG>*</STRONG><EM>string</EM><STRONG>);</STRONG>
+ <STRONG>char</STRONG> <STRONG>*_tracecchar_t(const</STRONG> <STRONG>cchar_t</STRONG> <STRONG>*</STRONG><EM>string</EM><STRONG>);</STRONG>
+ <STRONG>char</STRONG> <STRONG>*_tracecchar_t2(int</STRONG> <EM>buffer</EM><STRONG>,</STRONG> <STRONG>const</STRONG> <STRONG>cchar_t</STRONG> <STRONG>*</STRONG><EM>string</EM><STRONG>);</STRONG>
<STRONG>char</STRONG> <STRONG>*_tracechar(int</STRONG> <EM>ch</EM><STRONG>);</STRONG>
<STRONG>char</STRONG> <STRONG>*_tracechtype(chtype</STRONG> <EM>ch</EM><STRONG>);</STRONG>
<STRONG>char</STRONG> <STRONG>*_tracechtype2(int</STRONG> <EM>buffer</EM><STRONG>,</STRONG> <STRONG>chtype</STRONG> <EM>ch</EM><STRONG>);</STRONG>
+
+ <STRONG>void</STRONG> <STRONG>_tracedump(const</STRONG> <STRONG>char</STRONG> <STRONG>*</STRONG><EM>label</EM><STRONG>,</STRONG> <STRONG>WINDOW</STRONG> <STRONG>*</STRONG><EM>win</EM><STRONG>);</STRONG>
+ <STRONG>char</STRONG> <STRONG>*_nc_tracebits(void);</STRONG>
<STRONG>char</STRONG> <STRONG>*_tracemouse(const</STRONG> <STRONG>MEVENT</STRONG> <STRONG>*</STRONG><EM>event</EM><STRONG>);</STRONG>
- <STRONG>void</STRONG> <STRONG>trace(const</STRONG> <STRONG>unsigned</STRONG> <STRONG>int</STRONG> <EM>param</EM><STRONG>);</STRONG>
</PRE><H2><a name="h2-DESCRIPTION">DESCRIPTION</a></H2><PRE>
are only available with the wide-character configuration
of the libraries.
+
+</PRE><H3><a name="h3-Functions">Functions</a></H3><PRE>
The principal parts of this interface are
<STRONG>o</STRONG> <STRONG>trace</STRONG>, which selectively enables different tracing
<STRONG>o</STRONG> <STRONG>_tracef</STRONG>, which writes formatted data to the <EM>trace</EM>
file.
- Calling <STRONG>trace</STRONG> with a nonzero parameter opens the file
- <STRONG>trace</STRONG> in the current directory for output. The parameter
- is formed by OR'ing values from the list of <STRONG>TRACE_</STRONG><EM>xxx</EM> def-
- initions in <STRONG><curses.h></STRONG>. These include:
+ Calling <STRONG>trace</STRONG> with a nonzero parameter creates the file
+ <STRONG>trace</STRONG> in the current directory for output. If the file
+ already exists, no tracing is done.
+
+ The other functions either return a pointer to a string-
+ area (allocated by the corresponding function), or return
+ no value (such as <STRONG>_tracedump</STRONG>, which implements the screen
+ dump for <STRONG>TRACE_UPDATE</STRONG>). The caller should not free these
+ strings, since the allocation is reused on successive
+ calls. To work around the problem of a single string-area
+ per function, some use a buffer-number parameter, telling
+ the library to allocate additional string-areas.
+
+
+</PRE><H3><a name="h3-Trace-Parameter">Trace Parameter</a></H3><PRE>
+ The trace parameter is formed by OR'ing values from the
+ list of <STRONG>TRACE_</STRONG><EM>xxx</EM> definitions in <STRONG><curses.h></STRONG>. These in-
+ clude:
<STRONG>TRACE_DISABLE</STRONG>
- turn off tracing.
+ turn off tracing by passing a zero parameter.
+
+ The library flushes the output file, but retains an
+ open file-descriptor to the trace file so that it can
+ resume tracing later if a nonzero parameter is passed
+ to the <STRONG>trace</STRONG> function.
<STRONG>TRACE_TIMES</STRONG>
trace user and system times of updates.
trace all character outputs.
<STRONG>TRACE_ORDINARY</STRONG>
- trace all update actions. The old and new screen
- contents are written to the trace file for each re-
+ trace all update actions. The old and new screen
+ contents are written to the trace file for each re-
fresh.
<STRONG>TRACE_CALLS</STRONG>
trace changes to video attributes and colors.
<STRONG>TRACE_MAXIMUM</STRONG>
- maximum trace level, enables all of the separate
+ maximum trace level, enables all of the separate
trace features.
- Some tracing features are enabled whenever the <STRONG>trace</STRONG> pa-
- rameter is nonzero. Some features overlap. The specific
+ Some tracing features are enabled whenever the <STRONG>trace</STRONG> pa-
+ rameter is nonzero. Some features overlap. The specific
names are used as a guideline.
- The other functions either return a pointer to a string-
- area (allocated by the corresponding function), or return
- no value (such as <STRONG>_tracedump</STRONG>, which implements the screen
- dump for <STRONG>TRACE_UPDATE</STRONG>). The caller should not free these
- strings, since the allocation is reused on successive
- calls. To work around the problem of a single string-area
- per function, some use a buffer-number parameter, telling
- the library to allocate additional string-areas.
+</PRE><H3><a name="h3-Initialization">Initialization</a></H3><PRE>
These functions check the <STRONG>NCURSES_TRACE</STRONG> environment vari-
able, to set the tracing feature as if <STRONG>trace</STRONG> was called:
- filter, initscr, new_prescr, newterm, nofilter,
- restartterm, ripoffline, setupterm, slk_init, tge-
- tent, use_env, use_extended_names, use_tioctl
+ filter, initscr, new_prescr, newterm, nofilter,
+ restartterm, ripoffline, setupterm, slk_init, tgetent,
+ use_env, use_extended_names, use_tioctl
</PRE><H2><a name="h2-RETURN-VALUE">RETURN VALUE</a></H2><PRE>
undocumented features, but they are not compatible with
ncurses.
+ A few functions are not provided when symbol versioning is
+ used:
+
+ _nc_tracebits, _tracedump, _tracemouse
+
</PRE><H2><a name="h2-SEE-ALSO">SEE ALSO</a></H2><PRE>
<STRONG><A HREF="ncurses.3x.html">curses(3x)</A></STRONG>.
<ul>
<li><a href="#h2-NAME">NAME</a></li>
<li><a href="#h2-SYNOPSIS">SYNOPSIS</a></li>
-<li><a href="#h2-DESCRIPTION">DESCRIPTION</a></li>
+<li><a href="#h2-DESCRIPTION">DESCRIPTION</a>
+<ul>
+<li><a href="#h3-Functions">Functions</a></li>
+<li><a href="#h3-Trace-Parameter">Trace Parameter</a></li>
+<li><a href="#h3-Initialization">Initialization</a></li>
+</ul>
+</li>
<li><a href="#h2-RETURN-VALUE">RETURN VALUE</a></li>
<li><a href="#h2-PORTABILITY">PORTABILITY</a></li>
<li><a href="#h2-SEE-ALSO">SEE ALSO</a></li>
projects / ncurses.git / blobdiff