Mercurial > projects > ldc
annotate runtime/internal/critical.c @ 827:489f6f39ca09
... and fixed that test case :P ...
author | Tomas Lindquist Olsen <tomas.l.olsen@gmail.com> |
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date | Thu, 04 Dec 2008 16:13:40 +0100 |
parents | 29dc68c949b0 |
children | aa953cc960b6 |
rev | line source |
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443
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Removed tango from the repository and instead added a runtime dir with the files needed to patch and build tango from svn.
Tomas Lindquist Olsen <tomas.l.olsen@gmail.com>
parents:
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1 /* |
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2 * Placed into the Public Domain |
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3 * written by Walter Bright, Digital Mars |
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4 * www.digitalmars.com |
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5 */ |
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6 |
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7 /* ================================= Win32 ============================ */ |
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8 |
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9 #if _WIN32 |
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10 |
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11 #include <windows.h> |
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12 |
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13 /****************************************** |
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14 * Enter/exit critical section. |
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15 */ |
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16 |
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17 /* We don't initialize critical sections unless we actually need them. |
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18 * So keep a linked list of the ones we do use, and in the static destructor |
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19 * code, walk the list and release them. |
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20 */ |
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21 |
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22 typedef struct D_CRITICAL_SECTION |
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23 { |
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24 struct D_CRITICAL_SECTION *next; |
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25 CRITICAL_SECTION cs; |
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26 } D_CRITICAL_SECTION; |
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27 |
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28 static D_CRITICAL_SECTION *dcs_list; |
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29 static D_CRITICAL_SECTION critical_section; |
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30 static volatile int inited; |
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31 |
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32 void _d_criticalenter(D_CRITICAL_SECTION *dcs) |
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33 { |
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34 if (!dcs->next) |
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35 { |
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36 EnterCriticalSection(&critical_section.cs); |
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37 if (!dcs->next) // if, in the meantime, another thread didn't set it |
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38 { |
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39 dcs->next = dcs_list; |
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40 dcs_list = dcs; |
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41 InitializeCriticalSection(&dcs->cs); |
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42 } |
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43 LeaveCriticalSection(&critical_section.cs); |
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44 } |
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45 EnterCriticalSection(&dcs->cs); |
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46 } |
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47 |
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48 void _d_criticalexit(D_CRITICAL_SECTION *dcs) |
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49 { |
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50 LeaveCriticalSection(&dcs->cs); |
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51 } |
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52 |
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53 void _STI_critical_init() |
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54 { |
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55 if (!inited) |
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56 { InitializeCriticalSection(&critical_section.cs); |
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57 dcs_list = &critical_section; |
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58 inited = 1; |
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59 } |
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60 } |
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61 |
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62 void _STD_critical_term() |
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63 { |
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64 if (inited) |
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65 { inited = 0; |
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66 while (dcs_list) |
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67 { |
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68 DeleteCriticalSection(&dcs_list->cs); |
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69 dcs_list = dcs_list->next; |
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70 } |
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71 } |
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72 } |
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73 |
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74 #endif |
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75 |
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76 /* ================================= linux ============================ */ |
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77 |
637
29dc68c949b0
Applied the FreeBSD patch from Ralith, closes ticket #95 , slightly changed but basically the same. Thanx Ralith :)
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78 #if linux || __APPLE__ || __FreeBSD__ |
443
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79 |
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80 #include <stdio.h> |
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81 #include <stdlib.h> |
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82 #include <pthread.h> |
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83 |
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Ok. last fix was wrong, PTHREAD_MUTEX_RECURSIVE_NP is only valid on linux...
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84 #if !linux |
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Merge rest of patch from #72.
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85 #define PTHREAD_MUTEX_RECURSIVE_NP PTHREAD_MUTEX_RECURSIVE |
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86 #endif |
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87 |
443
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88 /****************************************** |
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89 * Enter/exit critical section. |
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90 */ |
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91 |
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92 /* We don't initialize critical sections unless we actually need them. |
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93 * So keep a linked list of the ones we do use, and in the static destructor |
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94 * code, walk the list and release them. |
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95 */ |
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96 |
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97 typedef struct D_CRITICAL_SECTION |
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98 { |
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99 struct D_CRITICAL_SECTION *next; |
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100 pthread_mutex_t cs; |
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101 } D_CRITICAL_SECTION; |
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102 |
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103 static D_CRITICAL_SECTION *dcs_list; |
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104 static D_CRITICAL_SECTION critical_section; |
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105 static pthread_mutexattr_t _criticals_attr; |
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106 |
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107 void _STI_critical_init(void); |
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108 void _STD_critical_term(void); |
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109 |
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110 void _d_criticalenter(D_CRITICAL_SECTION *dcs) |
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111 { |
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112 if (!dcs_list) |
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113 { _STI_critical_init(); |
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114 atexit(_STD_critical_term); |
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115 } |
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116 //printf("_d_criticalenter(dcs = x%x)\n", dcs); |
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117 if (!dcs->next) |
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118 { |
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119 pthread_mutex_lock(&critical_section.cs); |
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120 if (!dcs->next) // if, in the meantime, another thread didn't set it |
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121 { |
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122 dcs->next = dcs_list; |
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123 dcs_list = dcs; |
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124 pthread_mutex_init(&dcs->cs, &_criticals_attr); |
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125 } |
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126 pthread_mutex_unlock(&critical_section.cs); |
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127 } |
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128 pthread_mutex_lock(&dcs->cs); |
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129 } |
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130 |
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131 void _d_criticalexit(D_CRITICAL_SECTION *dcs) |
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132 { |
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133 //printf("_d_criticalexit(dcs = x%x)\n", dcs); |
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134 pthread_mutex_unlock(&dcs->cs); |
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135 } |
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136 |
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137 void _STI_critical_init() |
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138 { |
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139 if (!dcs_list) |
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140 { //printf("_STI_critical_init()\n"); |
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141 pthread_mutexattr_init(&_criticals_attr); |
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142 pthread_mutexattr_settype(&_criticals_attr, PTHREAD_MUTEX_RECURSIVE_NP); |
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143 |
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144 // The global critical section doesn't need to be recursive |
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145 pthread_mutex_init(&critical_section.cs, 0); |
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146 dcs_list = &critical_section; |
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147 } |
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148 } |
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149 |
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150 void _STD_critical_term() |
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151 { |
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152 if (dcs_list) |
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153 { //printf("_STI_critical_term()\n"); |
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154 while (dcs_list) |
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155 { |
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156 //printf("\tlooping... %x\n", dcs_list); |
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157 pthread_mutex_destroy(&dcs_list->cs); |
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158 dcs_list = dcs_list->next; |
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159 } |
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160 } |
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161 } |
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162 |
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163 #endif |
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164 |