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annotate fluid-mnf/trace.c @ 348:37b5f94de802

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fluid-mnf: sensible target tty specification
author Mychaela Falconia <falcon@freecalypso.org>
date Fri, 13 Mar 2020 06:41:44 +0000
parents 9cecc930d78f
children
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311
9cecc930d78f fluid-mnf: original source from TI,
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1 /******************************************************************************
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2 * Generic tracing library
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3 *
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4 * Idea, design and coding by Mads Meisner-Jensen, mmj@ti.com
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5 *
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6 * $Id: trace.c 1.5 Fri, 11 Oct 2002 08:40:21 +0200 mmj $
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7 *
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8 ******************************************************************************/
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9
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10 #include "trace.h"
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11
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12 #include <stdio.h>
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13 #include <string.h>
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14 #include <stdarg.h>
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15
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16
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17 #define TRACE_MODS 2
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18
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19
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20 /******************************************************************************
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21 *
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22 *****************************************************************************/
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23
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24 static struct trace_s {
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25 int spaces; // number of spaces to indent per level
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26 int level; // current indentation level (private)
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27 int enable; // global trace enable/disable flag
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28 FILE *fp; // file descriptor of file to write traces to
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29 int mask[TRACE_MODS]; // bitmask for each module
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30 } trace;
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31
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32 int tr_init(int spaces, char *filename)
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33 {
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34 trace.spaces = spaces;
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35 trace.level = 0;
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36 trace.enable = 1;
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37 trace.fp = stdout;
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38 memset(trace.mask, 0, sizeof(trace.mask));
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39
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40 if (filename != NULL && (trace.fp = fopen(filename, "w")) == NULL) {
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41 return -1;
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42 }
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43 return 0;
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44 }
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45
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46 int tr_mask(int mask)
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47 {
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48 int module, old;
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49
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50 module = ((mask & TrModMask) >> 24) - 1;
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51 if (module < 0 || module >= TRACE_MODS)
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52 return -1;
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53
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54 old = trace.mask[module];
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55 trace.mask[module] = mask & TrBitMask;
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56
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57 return old;
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58 }
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59
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60 void tr_enable(int onoff)
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61 {
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62 trace.enable = onoff;
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63 }
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64
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65 // return current indentation if this trace type is enabled, otherwise
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66 // return zero.
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67 int tr_query(int mask)
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68 {
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69 int module;
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70
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71 module = (mask & TrModMask) >> 24;
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72 if (module < 0 || module >= TRACE_MODS)
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73 return 0;
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74
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75 return (trace.mask[module] & (mask & TrBitMask) ?
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76 trace.level * trace.spaces : 0);
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77 }
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78
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79 extern void hexdump(const char *p, int size, unsigned int address, int unitsize);
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80
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81 void tr_hexdump(int mask, const void *p, int size)
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82 {
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83 unsigned int module;
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84
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85 module = mask & TrModMask;
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86 mask = mask & TrBitMask;
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87
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88 if ((mask & trace.mask[module >> 24]) == 0)
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89 return;
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90
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91 hexdump(p, size, 0, 1);
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92 }
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93
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94 void tr(int mask, char *format, ...)
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95 {
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96 va_list args;
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97 unsigned int type, module;
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98 int indent;
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99 static char buf[256];
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100 const char spaces[160 + 1] =
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101 " "
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102 " "
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103 " "
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104 " ";
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105
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106 if (!trace.enable)
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107 return;
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108
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109 type = mask & TrTypeMask;
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110 module = mask & TrModMask;
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111 mask = mask & TrBitMask;
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112
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113 if ((mask & trace.mask[(module >> 24) - 1]) == 0)
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114 return;
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115
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116 if (type == TrEnd)
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117 trace.level--;
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118
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119 indent = (type == TrCont ? 0 : trace.level);
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120
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121 if (indent < 0 || indent > 40) {
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122 indent = trace.level = 0;
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123 fprintf(stderr, "WARNING: trace indent out of range!\n");
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124 }
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125 if (strlen(format) > 0) {
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126 va_start(args, format);
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127 vsprintf(buf, format, args);
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128 indent *= trace.spaces;
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129 fprintf(trace.fp, "%s%s", &spaces[sizeof(spaces) - 1 - indent], buf);
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130 fflush(trace.fp);
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131 }
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132 if (type == TrBegin)
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133 trace.level++;
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134 }