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Rev | Author | Line No. | Line |
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431 | serge | 1 | ;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;; |
2 | ;; ;; |
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5565 | serge | 3 | ;; Copyright (C) KolibriOS team 2004-2015. All rights reserved. ;; |
431 | serge | 4 | ;; Distributed under terms of the GNU General Public License ;; |
5 | ;; ;; |
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6 | ;; Synhronization for MenuetOS. ;; |
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7 | ;; Author: Halyavin Andrey, halyavin@land.ru ;; |
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8 | ;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;; |
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9 | |||
593 | mikedld | 10 | $Revision: 5597 $ |
11 | |||
5593 | serge | 12 | align 4 |
13 | ;struct futex* __fastcall create_futex(int *ptr) |
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14 | create_futex: |
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15 | push ecx |
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16 | mov ecx, sizeof.FUTEX |
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17 | call create_object |
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18 | pop ecx |
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19 | test eax, eax |
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20 | jz .fail |
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593 | mikedld | 21 | |
5593 | serge | 22 | mov [eax+FUTEX.magic], 'FUTX' |
23 | mov [eax+FUTEX.destroy], 0 |
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24 | mov [eax+FUTEX.pointer], ecx |
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25 | lea ecx, [eax+FUTEX.wait_list] |
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26 | list_init ecx |
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27 | mov [eax+FUTEX.flags], 0 |
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28 | .fail: |
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29 | ret |
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30 | |||
5597 | serge | 31 | align 4 |
32 | ;int __fastcall destroy_futex(struct futex *futex) |
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33 | destroy_futex: |
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34 | push esi |
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35 | mov esi, [current_process] |
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36 | mov edx, [ecx+FUTEX.handle] |
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37 | |||
38 | pushfd |
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39 | cli |
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40 | |||
41 | lea eax, [ecx+FUTEX.wait_list] |
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42 | cmp eax, [eax+LHEAD.next] |
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43 | jne .fail |
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44 | |||
45 | mov eax, [esi+PROC.ht_next] |
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46 | mov [esi+PROC.htab+edx*4], eax |
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47 | mov [esi+PROC.ht_next], edx |
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48 | inc [esi+PROC.ht_free] |
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49 | |||
50 | popfd |
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51 | pop esi |
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52 | |||
53 | mov eax, ecx |
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54 | call free |
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55 | xor eax, eax |
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56 | ret |
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57 | |||
58 | .fail: |
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59 | popfd |
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60 | pop esi |
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61 | mov eax, -1 |
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62 | ret |
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63 | |||
64 | |||
5593 | serge | 65 | iglobal |
66 | align 4 |
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67 | f77call: |
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68 | dd f77.futex_init ;0 |
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5597 | serge | 69 | dd f77.futex_destroy ;1 |
70 | dd f77.futex_wait ;2 |
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71 | dd f77.futex_wake ;3 |
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5593 | serge | 72 | .end: |
73 | endg |
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74 | |||
75 | align 4 |
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76 | sys_synchronization: |
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77 | f77: |
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5597 | serge | 78 | test ebx, ebx |
79 | jz .futex_init |
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80 | |||
5593 | serge | 81 | cmp ebx, (f77call.end-f77call)/4 |
5597 | serge | 82 | jae .fail |
5593 | serge | 83 | |
5597 | serge | 84 | cmp ecx, STDERR_FILENO |
85 | jbe .fail |
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86 | cmp ecx, (PROC.pdt_0 - PROC.htab)/4 |
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87 | jae .fail |
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88 | |||
89 | mov esi, [current_process] |
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90 | mov edi, [esi+PROC.htab+ecx*4] |
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91 | |||
92 | cmp [edi+FUTEX.magic], 'FUTX' |
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93 | jne .fail |
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94 | cmp [edi+FUTEX.handle], ecx |
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95 | jne .fail |
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96 | |||
5593 | serge | 97 | jmp dword [f77call+ebx*4] |
98 | |||
99 | .fail: |
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100 | mov [esp+SYSCALL_STACK._eax], -1 |
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101 | ret |
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102 | |||
103 | align 4 |
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104 | .futex_init: |
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105 | call create_futex |
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106 | test eax, eax |
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107 | jz @F |
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108 | mov eax, [eax+FUTEX.handle] |
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109 | @@: |
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110 | mov [esp+SYSCALL_STACK._eax], eax |
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111 | ret |
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112 | |||
5597 | serge | 113 | |
5593 | serge | 114 | align 4 |
115 | ;ecx futex handle |
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5597 | serge | 116 | ;esi current process |
117 | ;edi futex object |
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118 | .futex_destroy: |
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119 | mov ecx, edi |
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120 | call destroy_futex |
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121 | mov [esp+SYSCALL_STACK._eax], eax |
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122 | ret |
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123 | |||
124 | align 4 |
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125 | ;ecx futex handle |
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126 | ;esi current process |
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127 | ;edi futex object |
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5593 | serge | 128 | ;edx control value |
129 | .futex_wait: |
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130 | mov ecx, [edi+FUTEX.pointer] |
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131 | mov eax, edx |
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132 | lock cmpxchg [ecx], edx ;wait until old_value == new_value |
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133 | jz .wait_slow |
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134 | |||
135 | mov [esp+SYSCALL_STACK._eax], 0 |
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136 | ret |
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137 | |||
138 | .wait_slow: |
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139 | pushfd |
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140 | cli |
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141 | |||
142 | sub esp, sizeof.MUTEX_WAITER |
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143 | mov ebx, [TASK_BASE] |
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144 | mov [ebx+TASKDATA.state], 1 |
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145 | mov [esp+MUTEX_WAITER.task], ebx |
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146 | lea esi, [edi+FUTEX.wait_list] |
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147 | |||
148 | list_add_tail esp, esi ;esp= new waiter, esi= list head |
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149 | |||
150 | .again: |
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151 | call change_task |
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152 | |||
153 | lock cmpxchg [ecx], edx |
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154 | jz .again |
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155 | |||
156 | list_del esp |
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157 | add esp, sizeof.MUTEX_WAITER |
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158 | |||
159 | popfd |
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160 | mov [esp+SYSCALL_STACK._eax], 0 |
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161 | ret |
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162 | |||
163 | align 4 |
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164 | ;ecx futex handle |
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5597 | serge | 165 | ;esi current process |
166 | ;edi futex object |
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5593 | serge | 167 | ;edx threads count |
168 | .futex_wake: |
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169 | |||
170 | xor ecx, ecx |
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171 | |||
172 | pushfd |
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173 | cli |
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174 | |||
175 | lea ebx, [edi+FUTEX.wait_list] |
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5597 | serge | 176 | mov esi, [ebx+LHEAD.next] |
5593 | serge | 177 | @@: |
178 | cmp esi, ebx |
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179 | je @F |
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180 | |||
181 | mov eax, [esi+MUTEX_WAITER.task] |
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182 | mov [eax+TASKDATA.state], 0 |
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183 | |||
184 | mov esi, [esi+MUTEX_WAITER.list.next] |
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185 | inc ecx |
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186 | cmp ecx, edx |
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187 | jb @B |
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188 | @@: |
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189 | popfd |
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190 | mov [esp+SYSCALL_STACK._eax], ecx |
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191 | ret |
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192 | |||
193 | RWSEM_WAITING_FOR_WRITE equ 0 |
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194 | RWSEM_WAITING_FOR_READ equ 1 |
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195 | |||
196 | ;void __fastcall mutex_init(struct mutex *lock) |
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197 | |||
198 | align 4 |
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199 | mutex_init: |
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200 | mov [ecx+MUTEX.wait_list.next], ecx |
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201 | mov [ecx+MUTEX.wait_list.prev], ecx |
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202 | mov [ecx+MUTEX.count], 1 |
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203 | ret |
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204 | |||
205 | ;void __fastcall mutex_lock(struct mutex *lock) |
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206 | |||
207 | align 4 |
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208 | mutex_lock: |
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209 | |||
210 | dec [ecx+MUTEX.count] |
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211 | jns .done |
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212 | |||
213 | pushfd |
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214 | cli |
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215 | |||
216 | sub esp, sizeof.MUTEX_WAITER |
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217 | |||
218 | list_add_tail esp, ecx ;esp= new waiter, ecx= list head |
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219 | |||
220 | mov edx, [TASK_BASE] |
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221 | mov [esp+MUTEX_WAITER.task], edx |
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222 | |||
223 | .forever: |
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224 | |||
225 | mov eax, -1 |
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226 | xchg eax, [ecx+MUTEX.count] |
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227 | dec eax |
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228 | jz @F |
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229 | |||
230 | mov [edx+TASKDATA.state], 1 |
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231 | call change_task |
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232 | jmp .forever |
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233 | @@: |
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234 | mov eax, ecx |
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235 | list_del esp |
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236 | |||
237 | cmp [eax+MUTEX.wait_list.next], eax |
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238 | jne @F |
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239 | |||
240 | mov [eax+MUTEX.count], 0 |
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241 | @@: |
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242 | add esp, sizeof.MUTEX_WAITER |
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243 | |||
244 | popfd |
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245 | .done: |
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246 | ret |
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247 | |||
248 | ;void __fastcall mutex_unlock(struct mutex *lock) |
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249 | |||
250 | align 4 |
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251 | mutex_unlock: |
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252 | |||
253 | pushfd |
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254 | cli |
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255 | |||
256 | mov eax, [ecx+MUTEX.wait_list.next] |
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257 | cmp eax, ecx |
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258 | mov [ecx+MUTEX.count], 1 |
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259 | je @F |
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260 | |||
261 | mov eax, [eax+MUTEX_WAITER.task] |
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262 | mov [eax+TASKDATA.state], 0 |
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263 | @@: |
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264 | popfd |
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265 | ret |
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266 | |||
267 | |||
268 | ;void __fastcall init_rwsem(struct rw_semaphore *sem) |
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269 | |||
270 | align 4 |
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271 | init_rwsem: |
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272 | mov [ecx+RWSEM.wait_list.next], ecx |
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273 | mov [ecx+RWSEM.wait_list.prev], ecx |
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274 | mov [ecx+RWSEM.count], 0 |
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275 | ret |
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276 | |||
277 | ;void __fastcall down_read(struct rw_semaphore *sem) |
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278 | |||
279 | align 4 |
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280 | down_read: |
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281 | pushfd |
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282 | cli |
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283 | |||
284 | mov eax, [ecx+RWSEM.count] |
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285 | test eax, eax |
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286 | js @F |
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287 | |||
288 | cmp ecx, [ecx+RWSEM.wait_list.next] |
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289 | je .ok |
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290 | @@: |
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291 | sub esp, sizeof.MUTEX_WAITER |
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292 | |||
293 | mov eax, [TASK_BASE] |
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294 | mov [esp+MUTEX_WAITER.task], eax |
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295 | mov [esp+MUTEX_WAITER.type], RWSEM_WAITING_FOR_READ |
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296 | mov [eax+TASKDATA.state], 1 |
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297 | |||
298 | list_add_tail esp, ecx ;esp= new waiter, ecx= list head |
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299 | |||
300 | call change_task |
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301 | |||
302 | add esp, sizeof.MUTEX_WAITER |
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303 | popfd |
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304 | ret |
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305 | .ok: |
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306 | inc eax |
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307 | mov [ecx+RWSEM.count], eax |
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308 | |||
309 | popfd |
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310 | ret |
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311 | |||
312 | ;void __fastcall down_write(struct rw_semaphore *sem) |
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313 | |||
314 | align 4 |
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315 | down_write: |
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316 | pushfd |
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317 | cli |
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318 | sub esp, sizeof.MUTEX_WAITER |
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319 | |||
320 | mov edx, [TASK_BASE] |
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321 | mov [esp+MUTEX_WAITER.task], edx |
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322 | mov [esp+MUTEX_WAITER.type], RWSEM_WAITING_FOR_WRITE |
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323 | mov [edx+TASKDATA.state], 1 |
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324 | |||
325 | list_add_tail esp, ecx ;esp= new waiter, ecx= list head |
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326 | |||
327 | xor eax, eax |
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328 | not eax |
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329 | |||
330 | .forever: |
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331 | test eax, [ecx+RWSEM.count] |
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332 | jz @F |
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333 | |||
334 | mov [edx+TASKDATA.state], 1 |
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335 | call change_task |
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336 | jmp .forever |
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337 | @@: |
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338 | mov [ecx+RWSEM.count], eax |
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339 | list_del esp |
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340 | |||
341 | add esp, sizeof.MUTEX_WAITER |
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342 | popfd |
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343 | ret |
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344 | |||
345 | ;void __fastcall up_read(struct rw_semaphore *sem) |
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346 | |||
347 | align 4 |
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348 | up_read: |
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349 | pushfd |
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350 | cli |
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351 | |||
352 | dec [ecx+RWSEM.count] |
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353 | jnz @F |
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354 | |||
355 | mov eax, [ecx+RWSEM.wait_list.next] |
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356 | cmp eax, ecx |
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357 | je @F |
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358 | |||
359 | mov eax, [eax+MUTEX_WAITER.task] |
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360 | mov [eax+TASKDATA.state], 0 |
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361 | @@: |
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362 | popfd |
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363 | ret |
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364 | |||
365 | ;void __fastcall up_write(struct rw_semaphore *sem) |
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366 | |||
367 | align 4 |
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368 | up_write: |
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369 | |||
370 | pushfd |
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371 | cli |
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372 | |||
373 | mov eax, [ecx+RWSEM.wait_list.next] |
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374 | mov [ecx+RWSEM.count], 0 |
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375 | |||
376 | cmp ecx, eax |
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377 | je .done |
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378 | |||
379 | mov edx, [eax+MUTEX_WAITER.type] |
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380 | test edx, edx |
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381 | jnz .wake |
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382 | |||
383 | mov eax, [eax+MUTEX_WAITER.task] |
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384 | mov [eax+TASKDATA.state], 0 |
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385 | .done: |
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386 | popfd |
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387 | ret |
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388 | |||
389 | .wake: |
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390 | push ebx |
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391 | push esi |
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392 | push edi |
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393 | |||
394 | xor esi, esi |
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395 | mov edi, ecx |
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396 | |||
397 | .wake_list: |
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398 | |||
399 | mov ebx, [eax+MUTEX_WAITER.list.next] |
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400 | list_del eax |
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401 | mov edx, [eax+MUTEX_WAITER.task] |
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402 | mov [edx+TASKDATA.state], 0 |
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403 | inc esi |
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404 | cmp edi, ebx |
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405 | je .wake_done |
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406 | |||
407 | mov ecx, [ebx+MUTEX_WAITER.type] |
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408 | test ecx, ecx |
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409 | jz .wake_done |
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410 | |||
411 | mov eax, ebx |
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412 | jmp .wake_list |
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413 | |||
414 | .wake_done: |
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415 | add [edi+RWSEM.count], esi |
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416 | |||
417 | pop edi |
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418 | pop esi |
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419 | pop ebx |
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420 | popfd |
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421 | ret |
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422 | |||
423 | |||
424 | purge RWSEM_WAITING_FOR_WRITE |
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425 | purge RWSEM_WAITING_FOR_READ |
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426 | |||
427 | |||
1 | ha | 428 | if ~defined sync_inc |
429 | sync_inc_fix: |
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430 | sync_inc fix sync_inc_fix |
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431 | |||
432 | ;simplest mutex. |
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433 | macro SimpleMutex name |
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434 | { |
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435 | ; iglobal |
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436 | name dd 0 |
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437 | name#.type = 1 |
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438 | ; endg |
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439 | } |
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440 | macro WaitSimpleMutex name |
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441 | { |
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442 | local start_wait,ok |
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379 | serge | 443 | start_wait=$ |
2434 | Serge | 444 | cli |
445 | cmp [name], dword 0 |
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446 | jz ok |
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447 | sti |
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448 | call change_task |
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449 | jmp start_wait |
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1 | ha | 450 | ok=$ |
2434 | Serge | 451 | push eax |
452 | mov eax, dword [TASK_BASE+second_base_address] |
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453 | mov eax, [eax+TASKDATA.pid] |
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454 | mov [name], eax |
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455 | pop eax |
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456 | sti |
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1 | ha | 457 | } |
458 | macro ReleaseSimpleMutex name |
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459 | { |
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2434 | Serge | 460 | mov [name], dword 0 |
1 | ha | 461 | } |
462 | macro TryWaitSimpleMutex name ;result in eax and in flags |
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463 | { |
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464 | local ok,try_end |
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2434 | Serge | 465 | cmp [name], dword 0 |
466 | jz ok |
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467 | xor eax, eax |
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468 | jmp try_end |
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1 | ha | 469 | ok=$ |
2434 | Serge | 470 | xor eax, eax |
471 | inc eax |
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1 | ha | 472 | try_end=$ |
473 | } |
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474 | macro SimpleCriticalSection name |
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475 | { |
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476 | ; iglobal |
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477 | name dd 0 |
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478 | dd 0 |
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479 | name#.type=2 |
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480 | ; endg |
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481 | } |
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482 | macro WaitSimpleCriticalSection name |
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483 | { |
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484 | local start_wait,first_wait,inc_counter,end_wait |
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2434 | Serge | 485 | push eax |
486 | mov eax, [TASK_BASE+second_base_address] |
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487 | mov eax, [eax+TASKDATA.pid] |
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1 | ha | 488 | start_wait=$ |
2434 | Serge | 489 | cli |
490 | cmp [name], dword 0 |
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491 | jz first_wait |
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492 | cmp [name], eax |
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493 | jz inc_counter |
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494 | sti |
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495 | call change_task |
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496 | jmp start_wait |
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1 | ha | 497 | first_wait=$ |
2434 | Serge | 498 | mov [name], eax |
499 | mov [name+4], dword 1 |
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500 | jmp end_wait |
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1 | ha | 501 | inc_counter=$ |
2434 | Serge | 502 | inc dword [name+4] |
1 | ha | 503 | end_wait=$ |
2434 | Serge | 504 | sti |
505 | pop eax |
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1 | ha | 506 | } |
507 | macro ReleaseSimpleCriticalSection name |
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508 | { |
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509 | local release_end |
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2434 | Serge | 510 | dec dword [name+4] |
511 | jnz release_end |
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512 | mov [name], dword 0 |
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1 | ha | 513 | release_end=$ |
514 | } |
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515 | macro TryWaitSimpleCriticalSection name ;result in eax and in flags |
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516 | { |
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517 | local ok,try_end |
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2434 | Serge | 518 | mov eax, [CURRENT_TASK+second_base_address] |
519 | mov eax, [eax+TASKDATA.pid] |
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520 | cmp [name], eax |
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521 | jz ok |
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522 | cmp [name], 0 |
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523 | jz ok |
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524 | xor eax, eax |
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525 | jmp try_end |
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1 | ha | 526 | ok=$ |
2434 | Serge | 527 | xor eax, eax |
528 | inc eax |
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1 | ha | 529 | try_end=$ |
530 | } |
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531 | _cli equ call MEM_HeapLock |
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532 | _sti equ call MEM_HeapUnLock |
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533 | end if |
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534 |