1 /*****************************************************************
2 |
3 | Neptune - Debug Utilities
4 |
5 | Copyright (c) 2002-2008, Axiomatic Systems, LLC.
6 | All rights reserved.
7 |
8 | Redistribution and use in source and binary forms, with or without
9 | modification, are permitted provided that the following conditions are met:
10 | * Redistributions of source code must retain the above copyright
11 | notice, this list of conditions and the following disclaimer.
12 | * Redistributions in binary form must reproduce the above copyright
13 | notice, this list of conditions and the following disclaimer in the
14 | documentation and/or other materials provided with the distribution.
15 | * Neither the name of Axiomatic Systems nor the
16 | names of its contributors may be used to endorse or promote products
17 | derived from this software without specific prior written permission.
18 |
19 | THIS SOFTWARE IS PROVIDED BY AXIOMATIC SYSTEMS ''AS IS'' AND ANY
20 | EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED
21 | WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE
22 | DISCLAIMED. IN NO EVENT SHALL AXIOMATIC SYSTEMS BE LIABLE FOR ANY
23 | DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES
24 | (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES;
25 | LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND
26 | ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
27 | (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF THIS
28 | SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
29 |
30 ****************************************************************/
31
32 /*----------------------------------------------------------------------
33 | includes
34 +---------------------------------------------------------------------*/
35 #include <stdarg.h>
36 #include "NptUtils.h"
37 #include "NptDebug.h"
38
39 /*----------------------------------------------------------------------
40 | constants
41 +---------------------------------------------------------------------*/
42 #define NPT_DEBUG_LOCAL_BUFFER_SIZE 1024
43 #define NPT_DEBUG_BUFFER_INCREMENT 4096
44 #define NPT_DEBUG_BUFFER_MAX_SIZE 65536
45
46 /*----------------------------------------------------------------------
47 | NPT_Debug
48 +---------------------------------------------------------------------*/
49 void
NPT_Debug(const char * format,...)50 NPT_Debug(const char* format, ...)
51 {
52 #if defined(NPT_DEBUG)
53 char local_buffer[NPT_DEBUG_LOCAL_BUFFER_SIZE];
54 unsigned int buffer_size = NPT_DEBUG_LOCAL_BUFFER_SIZE;
55 char* buffer = local_buffer;
56 va_list args;
57
58 va_start(args, format);
59
60 for(;;) {
61 int result;
62
63 /* try to format the message (it might not fit) */
64 result = NPT_FormatStringVN(buffer, buffer_size-1, format, args);
65 buffer[buffer_size-1] = 0; /* force a NULL termination */
66 if (result >= 0) break;
67
68 /* the buffer was too small, try something bigger */
69 buffer_size = (buffer_size+NPT_DEBUG_BUFFER_INCREMENT)*2;
70 if (buffer_size > NPT_DEBUG_BUFFER_MAX_SIZE) break;
71 if (buffer != local_buffer) delete[] buffer;
72 buffer = new char[buffer_size];
73 if (buffer == NULL) return;
74 }
75
76 NPT_DebugOutput(buffer);
77 if (buffer != local_buffer) delete[] buffer;
78
79 va_end(args);
80 #else
81 NPT_COMPILER_UNUSED(format);
82 #endif
83 }
84