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Rev | Author | Line No. | Line |
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2288 | clevermous | 1 | ;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;; |
2 | ;; ;; |
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9715 | Doczom | 3 | ;; Copyright (C) KolibriOS team 2004-2022. All rights reserved. ;; |
2288 | clevermous | 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 | |||
10 | $Revision: 9715 $ |
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11 | |||
12 | |||
6079 | serge | 13 | |
7136 | dunkaist | 14 | RWSEM_WAITING_FOR_WRITE = 0 |
15 | RWSEM_WAITING_FOR_READ = 1 |
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6079 | serge | 16 | |
17 | ;void __fastcall mutex_init(struct mutex *lock) |
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18 | |||
19 | align 4 |
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20 | mutex_init: |
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9715 | Doczom | 21 | mov [ecx + MUTEX.wait_list.next], ecx |
22 | mov [ecx + MUTEX.wait_list.prev], ecx |
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23 | mov [ecx + MUTEX.count], 1 |
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6079 | serge | 24 | ret |
25 | |||
26 | ;void __fastcall mutex_lock(struct mutex *lock) |
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27 | |||
28 | align 4 |
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29 | mutex_lock: |
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30 | |||
9715 | Doczom | 31 | dec [ecx + MUTEX.count] |
6079 | serge | 32 | jns .done |
33 | |||
34 | pushfd |
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35 | cli |
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36 | |||
37 | sub esp, sizeof.MUTEX_WAITER |
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38 | |||
39 | list_add_tail esp, ecx ;esp= new waiter, ecx= list head |
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40 | |||
9709 | Doczom | 41 | mov edx, [current_slot] |
9715 | Doczom | 42 | mov [esp + MUTEX_WAITER.task], edx |
6079 | serge | 43 | |
44 | .forever: |
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45 | |||
46 | mov eax, -1 |
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9715 | Doczom | 47 | xchg eax, [ecx + MUTEX.count] |
6079 | serge | 48 | dec eax |
49 | jz @F |
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50 | |||
9709 | Doczom | 51 | mov [edx + APPDATA.state], TSTATE_RUN_SUSPENDED |
6079 | serge | 52 | call change_task |
53 | jmp .forever |
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54 | @@: |
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55 | mov eax, ecx |
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56 | list_del esp |
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57 | |||
9715 | Doczom | 58 | cmp [eax + MUTEX.wait_list.next], eax |
6079 | serge | 59 | jne @F |
60 | |||
9715 | Doczom | 61 | mov [eax + MUTEX.count], 0 |
6079 | serge | 62 | @@: |
63 | add esp, sizeof.MUTEX_WAITER |
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64 | |||
65 | popfd |
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66 | .done: |
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67 | ret |
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68 | |||
69 | ;void __fastcall mutex_unlock(struct mutex *lock) |
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70 | |||
71 | align 4 |
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72 | mutex_unlock: |
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73 | |||
74 | pushfd |
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75 | cli |
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76 | |||
9715 | Doczom | 77 | mov eax, [ecx + MUTEX.wait_list.next] |
6079 | serge | 78 | cmp eax, ecx |
9715 | Doczom | 79 | mov [ecx + MUTEX.count], 1 |
6079 | serge | 80 | je @F |
81 | |||
9715 | Doczom | 82 | mov eax, [eax + MUTEX_WAITER.task] |
9709 | Doczom | 83 | mov [eax + APPDATA.state], TSTATE_RUNNING |
6079 | serge | 84 | @@: |
85 | popfd |
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86 | ret |
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87 | |||
88 | |||
89 | ;void __fastcall init_rwsem(struct rw_semaphore *sem) |
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90 | |||
91 | align 4 |
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92 | init_rwsem: |
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9715 | Doczom | 93 | mov [ecx + RWSEM.wait_list.next], ecx |
94 | mov [ecx + RWSEM.wait_list.prev], ecx |
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95 | mov [ecx + RWSEM.count], 0 |
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6079 | serge | 96 | ret |
97 | |||
98 | ;void __fastcall down_read(struct rw_semaphore *sem) |
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99 | |||
100 | align 4 |
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101 | down_read: |
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102 | pushfd |
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103 | cli |
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104 | |||
9715 | Doczom | 105 | mov eax, [ecx + RWSEM.count] |
6079 | serge | 106 | test eax, eax |
107 | js @F |
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108 | |||
9715 | Doczom | 109 | cmp ecx, [ecx + RWSEM.wait_list.next] |
6079 | serge | 110 | je .ok |
111 | @@: |
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112 | sub esp, sizeof.MUTEX_WAITER |
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113 | |||
9709 | Doczom | 114 | mov eax, [current_slot] |
9715 | Doczom | 115 | mov [esp + MUTEX_WAITER.task], eax |
116 | mov [esp + MUTEX_WAITER.type], RWSEM_WAITING_FOR_READ |
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9709 | Doczom | 117 | mov [eax + APPDATA.state], TSTATE_RUN_SUSPENDED |
6079 | serge | 118 | |
119 | list_add_tail esp, ecx ;esp= new waiter, ecx= list head |
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120 | |||
121 | call change_task |
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122 | |||
123 | add esp, sizeof.MUTEX_WAITER |
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124 | popfd |
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125 | ret |
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126 | .ok: |
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127 | inc eax |
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9715 | Doczom | 128 | mov [ecx + RWSEM.count], eax |
6079 | serge | 129 | |
130 | popfd |
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131 | ret |
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132 | |||
133 | ;void __fastcall down_write(struct rw_semaphore *sem) |
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134 | |||
135 | align 4 |
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136 | down_write: |
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137 | pushfd |
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138 | cli |
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139 | sub esp, sizeof.MUTEX_WAITER |
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140 | |||
9709 | Doczom | 141 | mov edx, [current_slot] |
9715 | Doczom | 142 | mov [esp + MUTEX_WAITER.task], edx |
143 | mov [esp + MUTEX_WAITER.type], RWSEM_WAITING_FOR_WRITE |
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9709 | Doczom | 144 | mov [edx + APPDATA.state], TSTATE_RUN_SUSPENDED |
6079 | serge | 145 | |
146 | list_add_tail esp, ecx ;esp= new waiter, ecx= list head |
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147 | |||
148 | xor eax, eax |
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149 | not eax |
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150 | |||
151 | .forever: |
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9715 | Doczom | 152 | test eax, [ecx + RWSEM.count] |
6079 | serge | 153 | jz @F |
154 | |||
9709 | Doczom | 155 | mov [edx + APPDATA.state], TSTATE_RUN_SUSPENDED |
6079 | serge | 156 | call change_task |
157 | jmp .forever |
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158 | @@: |
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9715 | Doczom | 159 | mov [ecx + RWSEM.count], eax |
6079 | serge | 160 | list_del esp |
161 | |||
162 | add esp, sizeof.MUTEX_WAITER |
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163 | popfd |
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164 | ret |
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165 | |||
166 | ;void __fastcall up_read(struct rw_semaphore *sem) |
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167 | |||
168 | align 4 |
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169 | up_read: |
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170 | pushfd |
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171 | cli |
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172 | |||
9715 | Doczom | 173 | dec [ecx + RWSEM.count] |
6079 | serge | 174 | jnz @F |
175 | |||
9715 | Doczom | 176 | mov eax, [ecx + RWSEM.wait_list.next] |
6079 | serge | 177 | cmp eax, ecx |
178 | je @F |
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179 | |||
9715 | Doczom | 180 | mov eax, [eax + MUTEX_WAITER.task] |
9709 | Doczom | 181 | mov [eax + APPDATA.state], TSTATE_RUNNING |
6079 | serge | 182 | @@: |
183 | popfd |
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184 | ret |
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185 | |||
186 | ;void __fastcall up_write(struct rw_semaphore *sem) |
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187 | |||
188 | align 4 |
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189 | up_write: |
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190 | |||
191 | pushfd |
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192 | cli |
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193 | |||
9715 | Doczom | 194 | mov eax, [ecx + RWSEM.wait_list.next] |
195 | mov [ecx + RWSEM.count], 0 |
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6079 | serge | 196 | |
197 | cmp ecx, eax |
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198 | je .done |
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199 | |||
9715 | Doczom | 200 | mov edx, [eax + MUTEX_WAITER.type] |
6079 | serge | 201 | test edx, edx |
202 | jnz .wake |
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203 | |||
9715 | Doczom | 204 | mov eax, [eax + MUTEX_WAITER.task] |
9709 | Doczom | 205 | mov [eax + APPDATA.state], TSTATE_RUNNING |
6079 | serge | 206 | .done: |
207 | popfd |
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208 | ret |
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209 | |||
210 | .wake: |
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211 | push ebx |
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212 | push esi |
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213 | push edi |
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214 | |||
215 | xor esi, esi |
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216 | mov edi, ecx |
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217 | |||
218 | .wake_list: |
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219 | |||
9715 | Doczom | 220 | mov ebx, [eax + MUTEX_WAITER.list.next] |
6079 | serge | 221 | list_del eax |
9715 | Doczom | 222 | mov edx, [eax + MUTEX_WAITER.task] |
9709 | Doczom | 223 | mov [edx + APPDATA.state], TSTATE_RUNNING |
6079 | serge | 224 | inc esi |
225 | cmp edi, ebx |
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226 | je .wake_done |
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227 | |||
9715 | Doczom | 228 | mov ecx, [ebx + MUTEX_WAITER.type] |
6079 | serge | 229 | test ecx, ecx |
230 | jz .wake_done |
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231 | |||
232 | mov eax, ebx |
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233 | jmp .wake_list |
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234 | |||
235 | .wake_done: |
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9715 | Doczom | 236 | add [edi + RWSEM.count], esi |
6079 | serge | 237 | |
238 | pop edi |
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239 | pop esi |
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240 | pop ebx |
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241 | popfd |
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242 | ret |
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243 | |||
244 | |||
245 | purge RWSEM_WAITING_FOR_WRITE |
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246 | purge RWSEM_WAITING_FOR_READ |
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247 | |||
248 | |||
2288 | clevermous | 249 | if ~defined sync_inc |
250 | sync_inc_fix: |
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251 | sync_inc fix sync_inc_fix |
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252 | |||
253 | ;simplest mutex. |
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254 | macro SimpleMutex name |
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255 | { |
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256 | ; iglobal |
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257 | name dd 0 |
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258 | name#.type = 1 |
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259 | ; endg |
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260 | } |
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261 | macro WaitSimpleMutex name |
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262 | { |
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263 | local start_wait,ok |
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264 | start_wait=$ |
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265 | cli |
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266 | cmp [name], dword 0 |
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267 | jz ok |
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268 | sti |
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269 | call change_task |
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270 | jmp start_wait |
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271 | ok=$ |
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272 | push eax |
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9715 | Doczom | 273 | mov eax, dword [current_slot] |
274 | mov eax, [eax + APPDATA.tid] |
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2288 | clevermous | 275 | mov [name], eax |
276 | pop eax |
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277 | sti |
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278 | } |
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279 | macro ReleaseSimpleMutex name |
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280 | { |
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281 | mov [name], dword 0 |
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282 | } |
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283 | macro TryWaitSimpleMutex name ;result in eax and in flags |
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284 | { |
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285 | local ok,try_end |
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286 | cmp [name], dword 0 |
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287 | jz ok |
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288 | xor eax, eax |
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289 | jmp try_end |
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290 | ok=$ |
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291 | xor eax, eax |
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292 | inc eax |
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293 | try_end=$ |
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294 | } |
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295 | macro SimpleCriticalSection name |
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296 | { |
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297 | ; iglobal |
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298 | name dd 0 |
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299 | dd 0 |
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300 | name#.type=2 |
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301 | ; endg |
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302 | } |
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303 | macro WaitSimpleCriticalSection name |
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304 | { |
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305 | local start_wait,first_wait,inc_counter,end_wait |
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306 | push eax |
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9715 | Doczom | 307 | mov eax, [current_slot] |
308 | mov eax, [eax + APPDATA.tid] |
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2288 | clevermous | 309 | start_wait=$ |
310 | cli |
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311 | cmp [name], dword 0 |
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312 | jz first_wait |
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313 | cmp [name], eax |
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314 | jz inc_counter |
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315 | sti |
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316 | call change_task |
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317 | jmp start_wait |
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318 | first_wait=$ |
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319 | mov [name], eax |
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9715 | Doczom | 320 | mov [name + 4], dword 1 |
2288 | clevermous | 321 | jmp end_wait |
322 | inc_counter=$ |
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9715 | Doczom | 323 | inc dword [name + 4] |
2288 | clevermous | 324 | end_wait=$ |
325 | sti |
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326 | pop eax |
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327 | } |
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328 | macro ReleaseSimpleCriticalSection name |
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329 | { |
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330 | local release_end |
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9715 | Doczom | 331 | dec dword [name + 4] |
2288 | clevermous | 332 | jnz release_end |
333 | mov [name], dword 0 |
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334 | release_end=$ |
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335 | } |
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336 | macro TryWaitSimpleCriticalSection name ;result in eax and in flags |
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337 | { |
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338 | local ok,try_end |
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9715 | Doczom | 339 | mov eax, [current_slot] |
340 | mov eax, [eax + APPDATA.tid] |
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2288 | clevermous | 341 | cmp [name], eax |
342 | jz ok |
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343 | cmp [name], 0 |
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344 | jz ok |
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345 | xor eax, eax |
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346 | jmp try_end |
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347 | ok=$ |
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348 | xor eax, eax |
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349 | inc eax |
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350 | try_end=$ |
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351 | } |
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352 | _cli equ call MEM_HeapLock |
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353 | _sti equ call MEM_HeapUnLock |
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354 | end if |
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355 |