3 * $Id: trace.h,v 1.2 1999/05/05 18:50:31 mdw Exp $
5 * Tracing functions for debugging
7 * (c) 1998 Straylight/Edgeware
10 /*----- Licensing notice --------------------------------------------------*
12 * This file is part of the mLib utilities library.
14 * mLib is free software; you can redistribute it and/or modify
15 * it under the terms of the GNU Library General Public License as
16 * published by the Free Software Foundation; either version 2 of the
17 * License, or (at your option) any later version.
19 * mLib is distributed in the hope that it will be useful,
20 * but WITHOUT ANY WARRANTY; without even the implied warranty of
21 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
22 * GNU Library General Public License for more details.
24 * You should have received a copy of the GNU Library General Public
25 * License along with mLib; if not, write to the Free Software
26 * Foundation, Inc., 59 Temple Place - Suite 330, Boston, MA 02111-1307, USA.
29 /*----- Revision history --------------------------------------------------*
32 * Revision 1.2 1999/05/05 18:50:31 mdw
33 * Change licensing conditions to LGPL.
35 * Revision 1.1.1.1 1998/06/17 23:44:42 mdw
36 * Initial version of mLib
49 /*----- Functions provided ------------------------------------------------*/
53 * Arguments: @unsigned int l@ = trace level for output
54 * @const char *f@ = a @printf@-style format string
55 * @...@ = other arguments
59 * Use: Reports a message to the trace output.
62 extern void trace(unsigned int /*l*/, const char */*f*/, ...);
64 /* --- @trace_block@ --- *
66 * Arguments: @unsigned int l@ = trace level for output
67 * @const char *s@ = some header string to write
68 * @const void *b@ = pointer to a block of memory to dump
69 * @size_t sz@ = size of the block of memory
73 * Use: Dumps the contents of a block to the trace output.
76 extern void trace_block(unsigned int /*l*/, const char */*s*/,
77 const void */*b*/, size_t /*sz*/);
79 /* --- @trace_on@ --- *
81 * Arguments: @FILE *fp@ = a file to trace on
82 * @unsigned int l@ = trace level to set
86 * Use: Enables tracing to a file.
89 extern void trace_on(FILE */*fp*/, unsigned int /*l*/);
91 /* --- @trace_setLevel@ --- *
93 * Arguments: @unsigned int l@ = trace level to set
97 * Use: Sets the tracing level.
100 extern void trace_setLevel(unsigned int /*l*/);
102 /* --- @tracing@ --- *
106 * Returns: Zero if not tracing, tracing level if tracing.
108 * Use: Informs the caller whether tracing is enabled.
111 extern unsigned int tracing(void);
113 /*----- Tracing macros ----------------------------------------------------*/
117 # define IF_TRACING(l, x) if ((l) & tracing()) x
120 # define IF_TRACING(l, x)
123 /*----- That's all, folks -------------------------------------------------*/