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29 * @Id: curs_trace.3x,v 1.13 2015/07/20 22:54:44 tom Exp @
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41 <H1 class="no-header">curs_trace 3x</H1>
43 <STRONG><A HREF="curs_trace.3x.html">curs_trace(3x)</A></STRONG> <STRONG><A HREF="curs_trace.3x.html">curs_trace(3x)</A></STRONG>
49 <H2><a name="h2-NAME">NAME</a></H2><PRE>
50 <STRONG>_tracef</STRONG>, <STRONG>_tracedump</STRONG>, <STRONG>_traceattr</STRONG>, <STRONG>_traceattr2</STRONG>,
51 <STRONG>_nc_tracebits</STRONG>, <STRONG>_tracecchar_t</STRONG>, <STRONG>_tracecchar_t2</STRONG>, <STRONG>_tracechar</STRONG>,
52 <STRONG>_tracechtype</STRONG>, <STRONG>_tracechtype2</STRONG>, <STRONG>_tracemouse</STRONG>, <STRONG>trace</STRONG> - <STRONG>curses</STRONG>
57 <H2><a name="h2-SYNOPSIS">SYNOPSIS</a></H2><PRE>
58 <STRONG>#include</STRONG> <STRONG><curses.h></STRONG>
60 <STRONG>void</STRONG> <STRONG>_tracef(const</STRONG> <STRONG>char</STRONG> <STRONG>*</STRONG><EM>format</EM><STRONG>,</STRONG> <STRONG>...);</STRONG>
61 <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>
62 <STRONG>char</STRONG> <STRONG>*_traceattr(attr_t</STRONG> <EM>attr</EM><STRONG>);</STRONG>
63 <STRONG>char</STRONG> <STRONG>*_traceattr2(int</STRONG> <EM>buffer</EM><STRONG>,</STRONG> <STRONG>chtype</STRONG> <EM>ch</EM><STRONG>);</STRONG>
64 <STRONG>char</STRONG> <STRONG>*_nc_tracebits(void);</STRONG>
65 <STRONG>char</STRONG> <STRONG>*</STRONG> <STRONG>_tracecchar_t(const</STRONG> <STRONG>cchar_t</STRONG> <STRONG>*</STRONG><EM>string</EM><STRONG>);</STRONG>
66 <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>
67 <STRONG>char</STRONG> <STRONG>*_tracechar(int</STRONG> <EM>ch</EM><STRONG>);</STRONG>
68 <STRONG>char</STRONG> <STRONG>*_tracechtype(chtype</STRONG> <EM>ch</EM><STRONG>);</STRONG>
69 <STRONG>char</STRONG> <STRONG>*_tracechtype2(int</STRONG> <EM>buffer</EM><STRONG>,</STRONG> <STRONG>chtype</STRONG> <EM>ch</EM><STRONG>);</STRONG>
70 <STRONG>char</STRONG> <STRONG>*_tracemouse(const</STRONG> <STRONG>MEVENT</STRONG> <STRONG>*</STRONG><EM>event</EM><STRONG>);</STRONG>
71 <STRONG>void</STRONG> <STRONG>trace(const</STRONG> <STRONG>unsigned</STRONG> <STRONG>int</STRONG> <EM>param</EM><STRONG>);</STRONG>
75 <H2><a name="h2-DESCRIPTION">DESCRIPTION</a></H2><PRE>
76 The <STRONG>trace</STRONG> routines are used for debugging the ncurses li-
77 braries, as well as applications which use the ncurses li-
78 braries. These functions are normally available only with
79 the debugging library e.g., <EM>libncurses</EM><STRONG>_</STRONG><EM>g.a</EM>, but may be
80 compiled into any model (shared, static, profile) by
81 defining the symbol <STRONG>TRACE</STRONG>. Additionally, some functions
82 are only available with the wide-character configuration
85 The principal parts of this interface are
87 <STRONG>o</STRONG> <STRONG>trace</STRONG>, which selectively enables different tracing
90 <STRONG>o</STRONG> <STRONG>_tracef</STRONG>, which writes formatted data to the <EM>trace</EM>
93 Calling <STRONG>trace</STRONG> with a nonzero parameter opens the file
94 <STRONG>trace</STRONG> in the current directory for output. The parameter
95 is formed by OR'ing values from the list of <STRONG>TRACE_</STRONG><EM>xxx</EM> def-
96 initions in <STRONG><curses.h></STRONG>. These include:
98 <STRONG>TRACE_DISABLE</STRONG>
101 <STRONG>TRACE_TIMES</STRONG>
102 trace user and system times of updates.
104 <STRONG>TRACE_TPUTS</STRONG>
107 <STRONG>TRACE_UPDATE</STRONG>
108 trace update actions, old & new screens.
110 <STRONG>TRACE_MOVE</STRONG>
111 trace cursor movement and scrolling.
113 <STRONG>TRACE_CHARPUT</STRONG>
114 trace all character outputs.
116 <STRONG>TRACE_ORDINARY</STRONG>
117 trace all update actions. The old and new screen
118 contents are written to the trace file for each re-
121 <STRONG>TRACE_CALLS</STRONG>
122 trace all curses calls. The parameters for each call
123 are traced, as well as return values.
125 <STRONG>TRACE_VIRTPUT</STRONG>
126 trace virtual character puts, i.e., calls to <STRONG>addch</STRONG>.
128 <STRONG>TRACE_IEVENT</STRONG>
129 trace low-level input processing, including timeouts.
131 <STRONG>TRACE_BITS</STRONG>
132 trace state of TTY control bits.
134 <STRONG>TRACE_ICALLS</STRONG>
135 trace internal/nested calls.
137 <STRONG>TRACE_CCALLS</STRONG>
138 trace per-character calls.
140 <STRONG>TRACE_DATABASE</STRONG>
141 trace read/write of terminfo/termcap data.
143 <STRONG>TRACE_ATTRS</STRONG>
144 trace changes to video attributes and colors.
146 <STRONG>TRACE_MAXIMUM</STRONG>
147 maximum trace level, enables all of the separate
150 Some tracing features are enabled whenever the <STRONG>trace</STRONG> pa-
151 rameter is nonzero. Some features overlap. The specific
152 names are used as a guideline.
154 The other functions either return a pointer to a string-
155 area (allocated by the corresponding function), or return
156 no value (such as <STRONG>_tracedump</STRONG>, which implements the screen
157 dump for <STRONG>TRACE_UPDATE</STRONG>). The caller should not free these
158 strings, since the allocation is reused on successive
159 calls. To work around the problem of a single string-area
160 per function, some use a buffer-number parameter, telling
161 the library to allocate additional string-areas.
163 These functions check the <STRONG>NCURSES_TRACE</STRONG> environment vari-
164 able, to set the tracing feature as if <STRONG>trace</STRONG> was called:
166 filter, initscr, new_prescr, newterm, nofilter,
167 restartterm, ripoffline, setupterm, slk_init, tge-
168 tent, use_env, use_extended_names, use_tioctl
172 <H2><a name="h2-RETURN-VALUE">RETURN VALUE</a></H2><PRE>
173 Routines which return a value are designed to be used as
174 parameters to the <STRONG>_tracef</STRONG> routine.
178 <H2><a name="h2-PORTABILITY">PORTABILITY</a></H2><PRE>
179 These functions are not part of the XSI interface. Some
180 other curses implementations are known to have similar,
181 undocumented features, but they are not compatible with
186 <H2><a name="h2-SEE-ALSO">SEE ALSO</a></H2><PRE>
187 <STRONG><A HREF="ncurses.3x.html">curses(3x)</A></STRONG>.
191 <STRONG><A HREF="curs_trace.3x.html">curs_trace(3x)</A></STRONG>
195 <li><a href="#h2-NAME">NAME</a></li>
196 <li><a href="#h2-SYNOPSIS">SYNOPSIS</a></li>
197 <li><a href="#h2-DESCRIPTION">DESCRIPTION</a></li>
198 <li><a href="#h2-RETURN-VALUE">RETURN VALUE</a></li>
199 <li><a href="#h2-PORTABILITY">PORTABILITY</a></li>
200 <li><a href="#h2-SEE-ALSO">SEE ALSO</a></li>