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;; Copyright (C) KolibriOS team 2004-2007. All rights reserved. ;;

;; Copyright (C) KolibriOS team 2004-2007. All rights reserved. ;;

;; Copyright (C) MenuetOS 2000-2004 Ville Mikael Turjanmaa      ;;

;; Copyright (C) MenuetOS 2000-2004 Ville Mikael Turjanmaa      ;;

;; Distributed under terms of the GNU General Public License    ;;

;; Distributed under terms of the GNU General Public License    ;;

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;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;

$Revision: 2137 $

$Revision: 2146 $

{

struc MUTEX_WAITER

    .next   rd 1

{

    .prev   rd 1

    .list   LHEAD

    .task   rd 1

    .task   rd 1

;void  __fastcall mutex_init(struct mutex *lock)

;void  __fastcall mutex_init(struct mutex *lock)

mutex_init:

        mov [ecx+MUTEX.wait.next], ecx

        mov [ecx+MUTEX.next], eax

        mov [ecx+MUTEX.wait.prev], ecx

        mov [ecx+MUTEX.prev], eax

        mov [ecx+MUTEX.count],1

        jns .done

        jns .done

        pushfd

        pushfd

        cli

        mov [esp+MUTEX_WAITER.next],  esi

        sub esp, MUTEX_WAITER.sizeof

        mov [esp+MUTEX_WAITER.prev],  eax

        mov [eax], esp

        list_add_tail esp, ecx      ;esp= new waiter, ecx= list head

        mov [edx+TASKDATA.state], 1

        mov [edx+TASKDATA.state], 1

        call change_task

        call change_task

        jmp .forever

        jmp .forever

        cmp [ecx+MUTEX.next], esi

        mov [edx+MUTEX_WAITER.list.prev], eax

        mov [edx+MUTEX_WAITER.prev], eax

        cmp [ecx+MUTEX.wait.next], ecx

        jne @F

        jne @F

@@:

        mov [ecx+MUTEX.count], 0

        add  esp, MUTEX_WAITER.sizeof

@@:

        add  esp, MUTEX_WAITER.sizeof

        pop esi

mutex_unlock:

mutex_unlock:

        pushfd

        pushfd

        mov eax, [edx]

        mov eax, [ecx+MUTEX.wait.next]

        cmp eax, edx

        cmp eax, ecx

        mov [ecx+MUTEX.count], 1

        mov [ecx+MUTEX.count], 1

        je @F

        je @F