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42 | pj | 1 | /* Project: OSLib |
2 | * Description: The OS Construction Kit |
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3 | * Date: 1.6.2000 |
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4 | * Idea by: Luca Abeni & Gerardo Lamastra |
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5 | * |
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6 | * OSLib is an SO project aimed at developing a common, easy-to-use |
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7 | * low-level infrastructure for developing OS kernels and Embedded |
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8 | * Applications; it partially derives from the HARTIK project but it |
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9 | * currently is independently developed. |
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10 | * |
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11 | * OSLib is distributed under GPL License, and some of its code has |
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12 | * been derived from the Linux kernel source; also some important |
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13 | * ideas come from studying the DJGPP go32 extender. |
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14 | * |
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15 | * We acknowledge the Linux Community, Free Software Foundation, |
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16 | * D.J. Delorie and all the other developers who believe in the |
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17 | * freedom of software and ideas. |
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18 | * |
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19 | * For legalese, check out the included GPL license. |
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20 | */ |
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21 | |||
22 | /* Inline functions for managing timespec structures. |
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23 | All timespec values are pointers!!! |
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24 | This file defines these functions: |
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25 | TIMESPEC2NANOSEC(t) |
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26 | converts a timespec value to a nanosec value, and return |
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27 | it, no checks |
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28 | TIMESPEC2USEC(t) |
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29 | converts a timespec value to a nanosec value, and return |
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30 | it, no checks |
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31 | NULL_TIMESPEC(t) |
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32 | the timespec value is set to the Epoch (=0) |
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33 | ADDNANO2TIMESPEC(n, t) |
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34 | t = t + n |
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35 | ADDUSEC2TIMESPEC(m, t) |
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36 | t = t + m |
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37 | SUBTIMESPEC(s1, s2, d) |
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38 | d = s1 - s2 |
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39 | ADDTIMESPEC(s1, s2, d) |
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40 | d = s1 + s2 |
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41 | TIMESPEC_A_LT_B(a,b) |
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42 | a < b |
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43 | TIMESPEC_A_GT_B(a,b) |
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44 | a > b |
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45 | TIMESPEC_A_EQ_B(a,b) |
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46 | a == b |
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47 | TIMESPEC_A_NEQ_B(a,b) |
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48 | a != b |
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49 | TIMESPEC_ASSIGN(t1,t2) |
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50 | t1 = t2 */ |
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51 | |||
52 | #ifndef __LL_SYS_LL_TIME_H__ |
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53 | #define __LL_SYS_LL_TIME_H__ |
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54 | |||
55 | #include <ll/i386/defs.h> |
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56 | BEGIN_DEF |
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57 | |||
58 | struct timespec { |
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59 | long tv_sec; /* Seconds */ |
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60 | long tv_nsec; /* Nanoseconds */ |
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61 | }; |
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62 | |||
63 | /* |
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64 | * these macros come from the Utah Flux oskit... |
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65 | */ |
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66 | |||
67 | #define TIMESPEC2NANOSEC(t) ((t)->tv_sec * 1000000000 + (t)->tv_nsec) |
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68 | #define TIMESPEC2USEC(t) ((t)->tv_sec * 1000000 + (t)->tv_nsec / 1000) |
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69 | #define NULL_TIMESPEC(t) ((t)->tv_sec = (t)->tv_nsec = 0) |
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70 | #define ADDNANO2TIMESPEC(n, t) ((t)->tv_nsec += (n), \ |
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71 | (t)->tv_sec += (t)->tv_nsec / 1000000000, \ |
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72 | (t)->tv_nsec %= 1000000000) |
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73 | |||
74 | #define SUBTIMESPEC(s1, s2, d) \ |
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75 | ((d)->tv_nsec = ((s1)->tv_nsec >= (s2)->tv_nsec) ? \ |
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76 | (((d)->tv_sec = (s1)->tv_sec - (s2)->tv_sec), \ |
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77 | (s1)->tv_nsec - (s2)->tv_nsec) \ |
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78 | : \ |
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79 | (((d)->tv_sec = (s1)->tv_sec - (s2)->tv_sec - 1), \ |
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80 | (1000000000 + (s1)->tv_nsec - (s2)->tv_nsec))) |
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81 | |||
82 | /* |
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83 | * ...and these not! |
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84 | */ |
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85 | |||
86 | extern __inline__ void ADDTIMESPEC(const struct timespec *s1, |
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87 | const struct timespec *s2, |
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88 | struct timespec *d) |
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89 | { |
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90 | d->tv_sec = s1->tv_sec + s2->tv_sec; |
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91 | d->tv_nsec = s1->tv_nsec + s2->tv_nsec; |
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92 | |||
93 | if (d->tv_nsec < 0) { |
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94 | d->tv_sec--; |
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95 | d->tv_nsec += 1000000000; |
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96 | } else if (d->tv_nsec >= 1000000000) { |
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97 | d->tv_sec++; |
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98 | d->tv_nsec -= 1000000000; |
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99 | } |
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100 | } |
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101 | |||
102 | |||
103 | #define ADDUSEC2TIMESPEC(m, t) ((t)->tv_nsec += (m%1000000)*1000, \ |
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104 | (t)->tv_sec += ((t)->tv_nsec / 1000000000) + (m/1000000), \ |
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105 | (t)->tv_nsec %= 1000000000) |
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106 | |||
107 | #define TIMESPEC_A_LT_B(a,b) \ |
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108 | ( \ |
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109 | ((a)->tv_sec < (b)->tv_sec) || \ |
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110 | ((a)->tv_sec == (b)->tv_sec && (a)->tv_nsec < (b)->tv_nsec) \ |
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111 | ) |
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112 | |||
113 | #define TIMESPEC_A_GT_B(a,b) \ |
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114 | ( \ |
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115 | ((a)->tv_sec > (b)->tv_sec) || \ |
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116 | ((a)->tv_sec == (b)->tv_sec && (a)->tv_nsec > (b)->tv_nsec) \ |
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117 | ) |
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118 | |||
119 | #define TIMESPEC_A_EQ_B(a,b) \ |
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120 | ((a)->tv_sec == (b)->tv_sec && (a)->tv_nsec == (b)->tv_nsec) |
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121 | |||
122 | #define TIMESPEC_A_NEQ_B(a,b) \ |
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123 | ((a)->tv_sec != (b)->tv_sec || (a)->tv_nsec != (b)->tv_nsec) |
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124 | |||
125 | #define TIMESPEC_ASSIGN(t1,t2) \ |
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126 | ((t1)->tv_sec = (t2)->tv_sec, (t1)->tv_nsec = (t2)->tv_nsec) |
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127 | |||
128 | #if 0 |
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129 | #define PITSPEC2TIMESPEC(a,b) \ |
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130 | ((b)->tv_nsec = (((DWORD)((a)->units) * 1000) / 1197) * 1000, \ |
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131 | (b)->tv_sec = ((a)->gigas * 1197) / 1000) /*, \ |
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132 | (b)->tv_sec += (b)->tv_nsec / 1000000000, \ |
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133 | (b)->tv_nsec %= 1000000000) */ |
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134 | #else |
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135 | /*#define PITSPEC2TIMESPEC(a,b) \ |
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136 | ((b)->tv_nsec = (((DWORD)((a)->units) * 1000) / 1197) * 1000, \ |
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137 | (b)->tv_nsec += (((a)->gigas * 1197) % 1000) * 1000000, \ |
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138 | (b)->tv_sec = ((a)->gigas * 1197) / 1000 , \ |
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139 | (b)->tv_sec += (b)->tv_nsec / 1000000000, \ |
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140 | (b)->tv_nsec %= 1000000000)*/ |
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141 | #define PITSPEC2TIMESPEC(a,b) \ |
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142 | ((b)->tv_nsec = (((DWORD)((a)->units) * 1000) / 1197), \ |
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143 | (b)->tv_nsec += (((a)->gigas * 1197) % 1000) * 1000, \ |
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144 | (b)->tv_sec = ((a)->gigas * 1197) / 1000 , \ |
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145 | (b)->tv_sec += (b)->tv_nsec / 1000000, \ |
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146 | (b)->tv_nsec %= 1000000, \ |
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147 | (b)->tv_nsec *= 1000) |
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148 | #endif |
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149 | |||
150 | TIME ll_gettime(int mode, struct timespec *tsres); |
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151 | |||
152 | #define TIME_PTICK 1 |
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153 | #define TIME_EXACT 2 |
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154 | #define TIME_NEW 3 |
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155 | |||
156 | END_DEF |
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157 | #endif |