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annotate packages/kernel/current/tests/clockcnv.cxx @ 3292:7f8e529b4d82 default tip

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Fix FREESCALE_EDMA_NBYTES_MLOFFYES_MLOFF() so it works with negative offsets.
author vae
date Wed, 29 Apr 2015 23:31:48 +0000
parents 74dbf4c3f2e1
children
Ignore whitespace changes - Everywhere: Within whitespace: At end of lines:
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1 //==========================================================================
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2 //
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3 // clockcnv.cxx
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4 //
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5 // Clock Converter test
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6 //
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7 //==========================================================================
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8 // ####ECOSGPLCOPYRIGHTBEGIN####
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9 // -------------------------------------------
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10 // This file is part of eCos, the Embedded Configurable Operating System.
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11 // Copyright (C) 1998, 1999, 2000, 2001, 2002, 2003 Free Software Foundation, Inc.
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12 //
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13 // eCos is free software; you can redistribute it and/or modify it under
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14 // the terms of the GNU General Public License as published by the Free
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15 // Software Foundation; either version 2 or (at your option) any later
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16 // version.
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17 //
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18 // eCos is distributed in the hope that it will be useful, but WITHOUT
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19 // ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or
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20 // FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License
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21 // for more details.
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22 //
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23 // You should have received a copy of the GNU General Public License
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24 // along with eCos; if not, write to the Free Software Foundation, Inc.,
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25 // 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA.
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26 //
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27 // As a special exception, if other files instantiate templates or use
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28 // macros or inline functions from this file, or you compile this file
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29 // and link it with other works to produce a work based on this file,
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30 // this file does not by itself cause the resulting work to be covered by
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31 // the GNU General Public License. However the source code for this file
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32 // must still be made available in accordance with section (3) of the GNU
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33 // General Public License v2.
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34 //
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35 // This exception does not invalidate any other reasons why a work based
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36 // on this file might be covered by the GNU General Public License.
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37 // -------------------------------------------
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38 // ####ECOSGPLCOPYRIGHTEND####
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39 //==========================================================================
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40 //#####DESCRIPTIONBEGIN####
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41 //
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42 // Author(s): hmt
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43 // Contributors: hmt
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44 // Date: 2000-01-24
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45 // Description: Tests the Kernel Real Time Clock Converter subsystem
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46 //
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47 //####DESCRIPTIONEND####
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48
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49 #include <pkgconf/kernel.h>
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50
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51 #include <cyg/kernel/clock.hxx>
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52 #include <cyg/kernel/thread.hxx>
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53
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54 #include <cyg/infra/testcase.h>
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55
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56 #include <cyg/kernel/clock.inl>
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57 #include <cyg/kernel/thread.inl>
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58
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59 #ifdef CYGVAR_KERNEL_COUNTERS_CLOCK
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60
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61 #include <cyg/infra/diag.h>
64
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62
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63 static void null_printf(const char *, ...)
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64 { /* nothing */ }
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65
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66 #define PRINTF0 diag_printf
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67 #define nPRINTF0 null_printf
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68
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69 #define nPRINTF1 diag_printf
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70 #define PRINTF1 null_printf
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71
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72 #define nPRINTF2 diag_printf
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73 #define PRINTF2 null_printf
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74
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75
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76 #define NTHREADS 1
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77 #include "testaux.hxx"
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78
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79 static struct { cyg_uint32 ns; double scale; } ns_tickers[] = {
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80 { 70000000, 7.0 }, // 7cS
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81 { 50000000, 5.0 }, // 5cS
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82 { 45000000, 4.5 }, // 4.5cS
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83 { 30000000, 3.0 }, // 3cS
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84 { 20000000, 2.0 }, // 2cS
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85 { 10000000, 1.0 }, // 1cS - no change
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86 { 5000000, 0.5 }, // 1/2 a cS
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87 { 4900000, 0.49 }, // a bit below
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88 { 3333333, 0.3333333 }, // 1/3 cS
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89 { 1250000, 0.125 }, // 800Hz
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90 { 1000000, 0.1 }, // 1000Hz
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91 { 909090, 0.0909090 }, // 1100Hz
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92 { 490000, 0.049 }, // 490uS
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93 { 333333, 0.0333333 }, // 1/30 cS, 1/3mS
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94 { 49000, 0.0049 }, // 49uS
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95 { 33333, 0.0033333 }, // 1/30 mS
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96 { 4900, 0.00049 }, // 4.9uS
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97 // now some outlandish ones
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98 { 170, 0.000017 }, // 170nS
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99 { 11, 0.0000011 }, // 11nS
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100 { 1000000000u, 100.0 }, // one second
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101 { 1234567777u, 123.4567777 }, // 1.234... seconds
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102 { 4294967291u, 429.4967291 }, // 4.3 seconds, nearly maxint.
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103 // now some which are prime in the nS per tick field
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104 { 909091, 0.0909091 }, // also 1100Hz - but 909091 is a prime!
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105 // and some eye-pleasing primes from the www - if they're not actually
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106 // prime, don't blame me. http://www.rsok.com/~jrm/printprimes.html
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107 { 1000003, 0.1000003 },
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108 { 1477771, 0.1477771 },
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109 { 2000003, 0.2000003 },
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110 { 2382001, 0.2382001 },
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111 { 3333133, 0.3333133 },
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112 { 3999971, 0.3999971 },
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113 { 5555591, 0.5555591 },
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114 { 6013919, 0.6013919 },
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115 // That's enough
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116 };
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117
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118 static void entry0( CYG_ADDRWORD data )
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119 {
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120 // First just try it with the clock as default:
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121 Cyg_Clock *rtc = Cyg_Clock::real_time_clock;
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122
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123 Cyg_Clock::converter cv, rcv;
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124 Cyg_Clock::cyg_resolution res;
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125
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126 unsigned int counter = 0;
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127 unsigned int skipped = 0;
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128
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129 unsigned int i;
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130 for ( i = 0; i < sizeof( ns_tickers )/sizeof( ns_tickers[0] ); i++ ) {
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131
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132 unsigned int lcounter = 0;
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133 unsigned int lskipped = 0;
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134
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135 rtc->get_other_to_clock_converter( ns_tickers[i].ns, &cv );
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136 rtc->get_clock_to_other_converter( ns_tickers[i].ns, &rcv );
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137
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138 PRINTF1( "ns per tick: %d\n", ns_tickers[i].ns );
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139 PRINTF1( " converter: * %d / %d * %d / %d\n",
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140 (int)cv.mul1, (int)cv.div1, (int)cv.mul2,(int) cv.div2 );
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141 PRINTF1( " reverser: * %d / %d * %d / %d\n",
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142 (int)rcv.mul1, (int)rcv.div1, (int)rcv.mul2, (int)rcv.div2 );
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143
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144 double d = 1.0;
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145 d *= (double)cv.mul1;
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146 d /= (double)cv.div1;
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147 d *= (double)cv.mul2;
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148 d /= (double)cv.div2;
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149 d *= (double)rcv.mul1;
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150 d /= (double)rcv.div1;
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151 d *= (double)rcv.mul2;
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152 d /= (double)rcv.div2;
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153 PRINTF1( " composite product %d.%d\n",
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154 (int)d, ((int)(d * 1000000) % 1000000 ) );
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155 d -= 1.0;
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156 CYG_TEST_CHECK( d < +0.0001, "Overflow in composite product" );
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157 CYG_TEST_CHECK( d > -0.0001, "Underflow in composite product" );
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158
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159 res = rtc->get_resolution();
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160
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161 double factor_other_to_clock;
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162 double factor_clock_to_other;
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163
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164 // res.dividend/res.divisor is the number of nS in a system
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165 // clock tick. So:
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166 d = (double)res.dividend/(double)res.divisor;
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167
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168 factor_other_to_clock = ns_tickers[i].scale * 1.0e7 / d ;
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169 factor_clock_to_other = d / (ns_tickers[i].scale * 1.0e7);
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170
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171 unsigned int j;
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172 for ( j = 1; j < 100; j++ ) {
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173 cyg_uint64 delay;
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174 if (cyg_test_is_simulator)
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175 j += 30; // test fewer values
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176 /* tr.b..m..k.. */
84
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177
101
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178 #ifdef CYGPKG_HAL_V85X_V850_CEB
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179 j += 30; // test fewer values
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180 #endif
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181
64
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182 for ( delay = j; delay < 1000000000000ll; delay *= 10 ) {
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183 // get the converted result
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184 cyg_uint64 result = Cyg_Clock::convert( delay, &cv );
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185
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186 counter++; lcounter++;
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187 if ( (double)delay * (double)cv.mul1 > 1.6e+19 ||
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188 (double)delay * (double)rcv.mul1 > 1.6e+19 ) {
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189 // in silly territory now, give up.
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190 // (that's MAXINT squared, approx.)
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191 skipped++; lskipped++;
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192 continue; // so the counter is accurate
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193 }
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194
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195 PRINTF2( "delay %x%08x to result %x%08x\n",
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196 (int)(delay >> 32), (int)delay,
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197 (int)(result >> 32), (int)result );
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198
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199 // get what it should be in double maths
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200 double delta = factor_other_to_clock * (double)delay;
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201 if ( delta > 1000.0 ) {
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202 delta = (double)result - delta;
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203 delta /= (double)result;
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204 CYG_TEST_CHECK( delta <= +0.01,
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205 "Proportional overflow in conversion to" );
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206 CYG_TEST_CHECK( delta >= -0.01,
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207 "Proportional underflow in conversion to" );
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208 }
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209 else {
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210 cyg_uint64 lo = (cyg_uint64)(delta); // assume TRUNCATION
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211 cyg_uint64 hi = lo + 1;
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212 CYG_TEST_CHECK( hi >= result,
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213 "Range overflow in conversion to" );
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214 CYG_TEST_CHECK( lo <= result,
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215 "Range underflow in conversion to" );
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216 }
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217
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218 // get the converted result
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219 result = Cyg_Clock::convert( delay, &rcv );
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220
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221 PRINTF2( "delay %x%08x from result %x%08x\n",
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222 (int)(delay >> 32), (int)delay,
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223 (int)(result >> 32), (int)result );
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224
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225 // get what it should be in double maths
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226 delta = factor_clock_to_other * (double)delay;
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227 if ( delta > 1000.0 ) {
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228 delta = (double)result - delta;
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229 delta /= (double)result;
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230 CYG_TEST_CHECK( delta <= +0.01,
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231 "Proportional overflow in conversion from" );
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232 CYG_TEST_CHECK( delta >= -0.01,
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233 "Proportional underflow in conversion from" );
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234 }
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235 else {
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236 cyg_uint64 lo = (cyg_uint64)(delta); // assume TRUNCATION
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237 cyg_uint64 hi = lo + 1;
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238 CYG_TEST_CHECK( hi >= result,
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239 "Range overflow in conversion from" );
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240 CYG_TEST_CHECK( lo <= result,
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241 "Range underflow in conversion from" );
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242 }
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243
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244 if (cyg_test_is_simulator)
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245 break;
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246 }
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247 }
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248 PRINTF0( "INFO:<%d nS/tick: tested %d values, skipped %d because of overflow>\n",
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249 ns_tickers[i].ns, lcounter, lskipped );
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250 }
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251
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252 PRINTF0( "INFO:<tested %d values, total skipped %d because of overflow>\n",
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253 counter, skipped );
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254
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255 CYG_TEST_PASS_FINISH("ClockCnv OK");
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256 }
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257
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258 void clockcnv_main( void )
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259 {
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260 CYG_TEST_INIT();
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261 new_thread(entry0, (CYG_ADDRWORD)&thread_obj[0]);
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262 Cyg_Scheduler::start();
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263 }
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264
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265 externC void
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266 cyg_start( void )
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267 {
130
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268 #ifdef CYGSEM_HAL_STOP_CONSTRUCTORS_ON_FLAG
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269 cyg_hal_invoke_constructors();
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270 #endif
64
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271 clockcnv_main();
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272 }
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273
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274 #else // def CYGVAR_KERNEL_COUNTERS_CLOCK
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275
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276 externC void
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277 cyg_start( void )
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278 {
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279 CYG_TEST_INIT();
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280 CYG_TEST_NA( "Kernel real-time clock disabled");
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281 }
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282
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283 #endif // def CYGVAR_KERNEL_COUNTERS_CLOCK
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284
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285 // EOF clockcnv.cxx