112 lines
2.0 KiB
PHP
112 lines
2.0 KiB
PHP
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if ~defined sync_inc
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sync_inc_fix:
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sync_inc fix sync_inc_fix
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;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;
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;;Synhronization for MenuetOS. ;;
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;;Author: Halyavin Andrey, halyavin@land.ru ;;
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;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;
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;simplest mutex.
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macro SimpleMutex name
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{
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; iglobal
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name dd 0
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name#.type = 1
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; endg
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}
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macro WaitSimpleMutex name
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{
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local start_wait,ok
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start_wait=$
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cli
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cmp [name],dword 0
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jz ok
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sti
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call change_task
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jmp start_wait
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ok=$
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push eax
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mov eax,dword [TASK_BASE+second_base_address]
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mov eax,[eax+TASKDATA.pid]
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mov [name],eax
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pop eax
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sti
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}
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macro ReleaseSimpleMutex name
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{
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mov [name],dword 0
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}
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macro TryWaitSimpleMutex name ;result in eax and in flags
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{
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local ok,try_end
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cmp [name],dword 0
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jz ok
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xor eax,eax
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jmp try_end
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ok=$
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xor eax,eax
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inc eax
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try_end=$
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}
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macro SimpleCriticalSection name
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{
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; iglobal
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name dd 0
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dd 0
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name#.type=2
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; endg
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}
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macro WaitSimpleCriticalSection name
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{
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local start_wait,first_wait,inc_counter,end_wait
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push eax
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mov eax,[TASK_BASE+second_base_address]
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mov eax,[eax+TASKDATA.pid]
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start_wait=$
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cli
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cmp [name],dword 0
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jz first_wait
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cmp [name],eax
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jz inc_counter
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sti
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call change_task
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jmp start_wait
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first_wait=$
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mov [name],eax
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mov [name+4],dword 1
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jmp end_wait
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inc_counter=$
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inc dword [name+4]
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end_wait=$
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sti
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pop eax
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}
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macro ReleaseSimpleCriticalSection name
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{
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local release_end
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dec dword [name+4]
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jnz release_end
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mov [name],dword 0
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release_end=$
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}
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macro TryWaitSimpleCriticalSection name ;result in eax and in flags
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{
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local ok,try_end
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mov eax,[CURRENT_TASK+second_base_address]
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mov eax,[eax+TASKDATA.pid]
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cmp [name],eax
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jz ok
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cmp [name],0
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jz ok
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xor eax,eax
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jmp try_end
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ok=$
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xor eax,eax
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inc eax
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try_end=$
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}
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_cli equ call MEM_HeapLock
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_sti equ call MEM_HeapUnLock
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end if
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