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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: 6240 $ |
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 | |||
5599 | serge | 89 | mov edi, [current_process] |
90 | mov ebp, [edi+PROC.htab+ecx*4] |
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5597 | serge | 91 | |
5599 | serge | 92 | cmp [ebp+FUTEX.magic], 'FUTX' |
5597 | serge | 93 | jne .fail |
5599 | serge | 94 | cmp [ebp+FUTEX.handle], ecx |
5597 | serge | 95 | jne .fail |
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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5599 | serge | 116 | ;edi current process |
117 | ;ebp futex object |
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5597 | serge | 118 | .futex_destroy: |
5599 | serge | 119 | mov ecx, ebp |
5597 | serge | 120 | call destroy_futex |
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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5593 | serge | 126 | ;edx control value |
5599 | serge | 127 | ;esi timeout |
128 | ;edi current process |
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129 | ;ebp futex object |
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5593 | serge | 130 | .futex_wait: |
5599 | serge | 131 | test esi, esi |
132 | jnz .futex_wait_timeout |
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133 | mov ecx, [ebp+FUTEX.pointer] |
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5593 | serge | 134 | mov eax, edx |
6240 | serge | 135 | lock cmpxchg [ecx], edx |
136 | je .wait_slow |
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5593 | serge | 137 | |
6240 | serge | 138 | mov [esp+SYSCALL_STACK._eax], -2 |
5593 | serge | 139 | ret |
140 | |||
141 | .wait_slow: |
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142 | pushfd |
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143 | cli |
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144 | |||
145 | sub esp, sizeof.MUTEX_WAITER |
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146 | mov ebx, [TASK_BASE] |
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147 | mov [esp+MUTEX_WAITER.task], ebx |
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5599 | serge | 148 | lea esi, [ebp+FUTEX.wait_list] |
5593 | serge | 149 | |
150 | list_add_tail esp, esi ;esp= new waiter, esi= list head |
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6240 | serge | 151 | mov eax, edx |
5593 | serge | 152 | .again: |
6078 | serge | 153 | mov [ebx+TASKDATA.state], 1 |
5593 | serge | 154 | call change_task |
155 | |||
156 | lock cmpxchg [ecx], edx |
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6240 | serge | 157 | je .again |
5593 | serge | 158 | |
159 | list_del esp |
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160 | add esp, sizeof.MUTEX_WAITER |
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161 | |||
162 | popfd |
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163 | mov [esp+SYSCALL_STACK._eax], 0 |
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164 | ret |
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165 | |||
166 | align 4 |
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167 | ;ecx futex handle |
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5599 | serge | 168 | ;edx control value |
169 | ;esi timeout |
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170 | ;edi current process |
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171 | ;ebp futex object |
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172 | |||
173 | .futex_wait_timeout: |
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174 | mov ecx, [ebp+FUTEX.pointer] |
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175 | mov eax, edx |
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176 | lock cmpxchg [ecx], edx ;wait until old_value == new_value |
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6240 | serge | 177 | je .wait_slow_timeout |
5599 | serge | 178 | |
6240 | serge | 179 | mov [esp+SYSCALL_STACK._eax], -2 |
5599 | serge | 180 | ret |
181 | |||
182 | align 4 |
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183 | .wait_test: |
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184 | xor eax, eax |
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185 | ret |
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186 | |||
187 | .wait_slow_timeout: |
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188 | pushfd |
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189 | cli |
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190 | |||
191 | sub esp, sizeof.MUTEX_WAITER |
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192 | |||
193 | mov ebx, [current_slot] |
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194 | mov [ebx+APPDATA.wait_test], f77.wait_test |
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195 | mov [ebx+APPDATA.wait_timeout], esi |
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196 | mov [ebx+APPDATA.wait_param], ebp |
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197 | mov eax, [timer_ticks] |
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198 | mov [ebx+APPDATA.wait_begin], eax |
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199 | mov eax, [TASK_BASE] |
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200 | mov [eax+TASKDATA.state], 5 |
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201 | |||
6078 | serge | 202 | mov [esp+MUTEX_WAITER.task], eax |
5599 | serge | 203 | lea esi, [ebp+FUTEX.wait_list] |
204 | |||
205 | list_add_tail esp, esi ;esp= new waiter, esi= list head |
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206 | |||
207 | .again_timeout: |
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208 | call change_task |
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209 | mov eax, [ebx+APPDATA.wait_param] |
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210 | test eax, eax |
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211 | jz .timeout |
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212 | |||
6240 | serge | 213 | mov eax, edx |
5599 | serge | 214 | lock cmpxchg [ecx], edx |
215 | jz .again_timeout |
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216 | @@: |
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217 | list_del esp |
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218 | add esp, sizeof.MUTEX_WAITER |
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219 | |||
220 | popfd |
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221 | mov [esp+SYSCALL_STACK._eax], 0 |
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222 | ret |
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223 | |||
224 | .timeout: |
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225 | list_del esp |
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226 | add esp, sizeof.MUTEX_WAITER |
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227 | |||
228 | popfd |
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229 | mov [esp+SYSCALL_STACK._eax], -1 |
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230 | ret |
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231 | |||
232 | |||
233 | align 4 |
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234 | ;ecx futex handle |
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6240 | serge | 235 | ;edx number of threads |
5605 | serge | 236 | ;edi current process |
237 | ;ebp futex object |
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5593 | serge | 238 | .futex_wake: |
239 | |||
240 | xor ecx, ecx |
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241 | |||
242 | pushfd |
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243 | cli |
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244 | |||
5605 | serge | 245 | lea ebx, [ebp+FUTEX.wait_list] |
5597 | serge | 246 | mov esi, [ebx+LHEAD.next] |
5605 | serge | 247 | .wake: |
5593 | serge | 248 | cmp esi, ebx |
5605 | serge | 249 | je .done |
5593 | serge | 250 | |
251 | mov eax, [esi+MUTEX_WAITER.task] |
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252 | mov [eax+TASKDATA.state], 0 |
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253 | |||
254 | mov esi, [esi+MUTEX_WAITER.list.next] |
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255 | inc ecx |
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256 | cmp ecx, edx |
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5605 | serge | 257 | jb .wake |
258 | .done: |
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5593 | serge | 259 | popfd |
260 | mov [esp+SYSCALL_STACK._eax], ecx |
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261 | ret |
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262 | |||
263 | RWSEM_WAITING_FOR_WRITE equ 0 |
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264 | RWSEM_WAITING_FOR_READ equ 1 |
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265 | |||
266 | ;void __fastcall mutex_init(struct mutex *lock) |
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267 | |||
268 | align 4 |
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269 | mutex_init: |
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270 | mov [ecx+MUTEX.wait_list.next], ecx |
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271 | mov [ecx+MUTEX.wait_list.prev], ecx |
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272 | mov [ecx+MUTEX.count], 1 |
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273 | ret |
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274 | |||
275 | ;void __fastcall mutex_lock(struct mutex *lock) |
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276 | |||
277 | align 4 |
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278 | mutex_lock: |
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279 | |||
280 | dec [ecx+MUTEX.count] |
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281 | jns .done |
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282 | |||
283 | pushfd |
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284 | cli |
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285 | |||
286 | sub esp, sizeof.MUTEX_WAITER |
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287 | |||
288 | list_add_tail esp, ecx ;esp= new waiter, ecx= list head |
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289 | |||
290 | mov edx, [TASK_BASE] |
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291 | mov [esp+MUTEX_WAITER.task], edx |
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292 | |||
293 | .forever: |
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294 | |||
295 | mov eax, -1 |
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296 | xchg eax, [ecx+MUTEX.count] |
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297 | dec eax |
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298 | jz @F |
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299 | |||
300 | mov [edx+TASKDATA.state], 1 |
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301 | call change_task |
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302 | jmp .forever |
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303 | @@: |
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304 | mov eax, ecx |
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305 | list_del esp |
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306 | |||
307 | cmp [eax+MUTEX.wait_list.next], eax |
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308 | jne @F |
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309 | |||
310 | mov [eax+MUTEX.count], 0 |
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311 | @@: |
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312 | add esp, sizeof.MUTEX_WAITER |
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313 | |||
314 | popfd |
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315 | .done: |
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316 | ret |
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317 | |||
318 | ;void __fastcall mutex_unlock(struct mutex *lock) |
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319 | |||
320 | align 4 |
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321 | mutex_unlock: |
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322 | |||
323 | pushfd |
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324 | cli |
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325 | |||
326 | mov eax, [ecx+MUTEX.wait_list.next] |
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327 | cmp eax, ecx |
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328 | mov [ecx+MUTEX.count], 1 |
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329 | je @F |
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330 | |||
331 | mov eax, [eax+MUTEX_WAITER.task] |
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332 | mov [eax+TASKDATA.state], 0 |
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333 | @@: |
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334 | popfd |
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335 | ret |
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336 | |||
337 | |||
338 | ;void __fastcall init_rwsem(struct rw_semaphore *sem) |
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339 | |||
340 | align 4 |
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341 | init_rwsem: |
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342 | mov [ecx+RWSEM.wait_list.next], ecx |
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343 | mov [ecx+RWSEM.wait_list.prev], ecx |
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344 | mov [ecx+RWSEM.count], 0 |
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345 | ret |
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346 | |||
347 | ;void __fastcall down_read(struct rw_semaphore *sem) |
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348 | |||
349 | align 4 |
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350 | down_read: |
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351 | pushfd |
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352 | cli |
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353 | |||
354 | mov eax, [ecx+RWSEM.count] |
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355 | test eax, eax |
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356 | js @F |
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357 | |||
358 | cmp ecx, [ecx+RWSEM.wait_list.next] |
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359 | je .ok |
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360 | @@: |
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361 | sub esp, sizeof.MUTEX_WAITER |
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362 | |||
363 | mov eax, [TASK_BASE] |
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364 | mov [esp+MUTEX_WAITER.task], eax |
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365 | mov [esp+MUTEX_WAITER.type], RWSEM_WAITING_FOR_READ |
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366 | mov [eax+TASKDATA.state], 1 |
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367 | |||
368 | list_add_tail esp, ecx ;esp= new waiter, ecx= list head |
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369 | |||
370 | call change_task |
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371 | |||
372 | add esp, sizeof.MUTEX_WAITER |
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373 | popfd |
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374 | ret |
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375 | .ok: |
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376 | inc eax |
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377 | mov [ecx+RWSEM.count], eax |
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378 | |||
379 | popfd |
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380 | ret |
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381 | |||
382 | ;void __fastcall down_write(struct rw_semaphore *sem) |
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383 | |||
384 | align 4 |
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385 | down_write: |
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386 | pushfd |
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387 | cli |
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388 | sub esp, sizeof.MUTEX_WAITER |
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389 | |||
390 | mov edx, [TASK_BASE] |
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391 | mov [esp+MUTEX_WAITER.task], edx |
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392 | mov [esp+MUTEX_WAITER.type], RWSEM_WAITING_FOR_WRITE |
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393 | mov [edx+TASKDATA.state], 1 |
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394 | |||
395 | list_add_tail esp, ecx ;esp= new waiter, ecx= list head |
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396 | |||
397 | xor eax, eax |
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398 | not eax |
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399 | |||
400 | .forever: |
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401 | test eax, [ecx+RWSEM.count] |
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402 | jz @F |
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403 | |||
404 | mov [edx+TASKDATA.state], 1 |
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405 | call change_task |
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406 | jmp .forever |
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407 | @@: |
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408 | mov [ecx+RWSEM.count], eax |
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409 | list_del esp |
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410 | |||
411 | add esp, sizeof.MUTEX_WAITER |
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412 | popfd |
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413 | ret |
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414 | |||
415 | ;void __fastcall up_read(struct rw_semaphore *sem) |
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416 | |||
417 | align 4 |
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418 | up_read: |
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419 | pushfd |
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420 | cli |
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421 | |||
422 | dec [ecx+RWSEM.count] |
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423 | jnz @F |
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424 | |||
425 | mov eax, [ecx+RWSEM.wait_list.next] |
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426 | cmp eax, ecx |
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427 | je @F |
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428 | |||
429 | mov eax, [eax+MUTEX_WAITER.task] |
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430 | mov [eax+TASKDATA.state], 0 |
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431 | @@: |
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432 | popfd |
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433 | ret |
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434 | |||
435 | ;void __fastcall up_write(struct rw_semaphore *sem) |
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436 | |||
437 | align 4 |
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438 | up_write: |
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439 | |||
440 | pushfd |
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441 | cli |
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442 | |||
443 | mov eax, [ecx+RWSEM.wait_list.next] |
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444 | mov [ecx+RWSEM.count], 0 |
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445 | |||
446 | cmp ecx, eax |
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447 | je .done |
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448 | |||
449 | mov edx, [eax+MUTEX_WAITER.type] |
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450 | test edx, edx |
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451 | jnz .wake |
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452 | |||
453 | mov eax, [eax+MUTEX_WAITER.task] |
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454 | mov [eax+TASKDATA.state], 0 |
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455 | .done: |
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456 | popfd |
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457 | ret |
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458 | |||
459 | .wake: |
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460 | push ebx |
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461 | push esi |
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462 | push edi |
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463 | |||
464 | xor esi, esi |
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465 | mov edi, ecx |
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466 | |||
467 | .wake_list: |
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468 | |||
469 | mov ebx, [eax+MUTEX_WAITER.list.next] |
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470 | list_del eax |
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471 | mov edx, [eax+MUTEX_WAITER.task] |
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472 | mov [edx+TASKDATA.state], 0 |
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473 | inc esi |
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474 | cmp edi, ebx |
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475 | je .wake_done |
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476 | |||
477 | mov ecx, [ebx+MUTEX_WAITER.type] |
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478 | test ecx, ecx |
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479 | jz .wake_done |
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480 | |||
481 | mov eax, ebx |
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482 | jmp .wake_list |
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483 | |||
484 | .wake_done: |
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485 | add [edi+RWSEM.count], esi |
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486 | |||
487 | pop edi |
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488 | pop esi |
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489 | pop ebx |
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490 | popfd |
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491 | ret |
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492 | |||
493 | |||
494 | purge RWSEM_WAITING_FOR_WRITE |
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495 | purge RWSEM_WAITING_FOR_READ |
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496 | |||
497 | |||
1 | ha | 498 | if ~defined sync_inc |
499 | sync_inc_fix: |
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500 | sync_inc fix sync_inc_fix |
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501 | |||
502 | ;simplest mutex. |
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503 | macro SimpleMutex name |
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504 | { |
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505 | ; iglobal |
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506 | name dd 0 |
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507 | name#.type = 1 |
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508 | ; endg |
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509 | } |
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510 | macro WaitSimpleMutex name |
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511 | { |
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512 | local start_wait,ok |
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379 | serge | 513 | start_wait=$ |
2434 | Serge | 514 | cli |
515 | cmp [name], dword 0 |
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516 | jz ok |
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517 | sti |
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518 | call change_task |
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519 | jmp start_wait |
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1 | ha | 520 | ok=$ |
2434 | Serge | 521 | push eax |
522 | mov eax, dword [TASK_BASE+second_base_address] |
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523 | mov eax, [eax+TASKDATA.pid] |
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524 | mov [name], eax |
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525 | pop eax |
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526 | sti |
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1 | ha | 527 | } |
528 | macro ReleaseSimpleMutex name |
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529 | { |
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2434 | Serge | 530 | mov [name], dword 0 |
1 | ha | 531 | } |
532 | macro TryWaitSimpleMutex name ;result in eax and in flags |
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533 | { |
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534 | local ok,try_end |
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2434 | Serge | 535 | cmp [name], dword 0 |
536 | jz ok |
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537 | xor eax, eax |
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538 | jmp try_end |
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1 | ha | 539 | ok=$ |
2434 | Serge | 540 | xor eax, eax |
541 | inc eax |
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1 | ha | 542 | try_end=$ |
543 | } |
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544 | macro SimpleCriticalSection name |
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545 | { |
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546 | ; iglobal |
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547 | name dd 0 |
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548 | dd 0 |
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549 | name#.type=2 |
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550 | ; endg |
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551 | } |
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552 | macro WaitSimpleCriticalSection name |
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553 | { |
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554 | local start_wait,first_wait,inc_counter,end_wait |
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2434 | Serge | 555 | push eax |
556 | mov eax, [TASK_BASE+second_base_address] |
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557 | mov eax, [eax+TASKDATA.pid] |
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1 | ha | 558 | start_wait=$ |
2434 | Serge | 559 | cli |
560 | cmp [name], dword 0 |
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561 | jz first_wait |
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562 | cmp [name], eax |
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563 | jz inc_counter |
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564 | sti |
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565 | call change_task |
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566 | jmp start_wait |
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1 | ha | 567 | first_wait=$ |
2434 | Serge | 568 | mov [name], eax |
569 | mov [name+4], dword 1 |
||
570 | jmp end_wait |
||
1 | ha | 571 | inc_counter=$ |
2434 | Serge | 572 | inc dword [name+4] |
1 | ha | 573 | end_wait=$ |
2434 | Serge | 574 | sti |
575 | pop eax |
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1 | ha | 576 | } |
577 | macro ReleaseSimpleCriticalSection name |
||
578 | { |
||
579 | local release_end |
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2434 | Serge | 580 | dec dword [name+4] |
581 | jnz release_end |
||
582 | mov [name], dword 0 |
||
1 | ha | 583 | release_end=$ |
584 | } |
||
585 | macro TryWaitSimpleCriticalSection name ;result in eax and in flags |
||
586 | { |
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587 | local ok,try_end |
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2434 | Serge | 588 | mov eax, [CURRENT_TASK+second_base_address] |
589 | mov eax, [eax+TASKDATA.pid] |
||
590 | cmp [name], eax |
||
591 | jz ok |
||
592 | cmp [name], 0 |
||
593 | jz ok |
||
594 | xor eax, eax |
||
595 | jmp try_end |
||
1 | ha | 596 | ok=$ |
2434 | Serge | 597 | xor eax, eax |
598 | inc eax |
||
1 | ha | 599 | try_end=$ |
600 | } |
||
601 | _cli equ call MEM_HeapLock |
||
602 | _sti equ call MEM_HeapUnLock |
||
603 | end if |
||
604 |