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65 lines
1.4 KiB
Fortran
65 lines
1.4 KiB
Fortran
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subroutine cs_init
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use dfmt
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type (RTL_CRITICAL_SECTION) ncrit1
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character*12 csub0
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common/mtxcom/ltrace,mtx,mtxstate,csub0
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ltrace=1
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mtx=loc(ncrit1)
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mtxstate=0
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csub0='**unlocked**'
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call InitializeCriticalSection(mtx)
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return
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end subroutine cs_init
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subroutine cs_destroy
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use dfmt
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type (RTL_CRITICAL_SECTION) ncrit1
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character*12 csub0
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common/mtxcom/ltrace,mtx,mtxstate,csub0
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call DeleteCriticalSection(mtx)
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return
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end subroutine cs_destroy
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subroutine th_create(sub)
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use dfmt
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external sub
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ith=CreateThread(0,0,sub,0,0,id)
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return
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end subroutine th_create
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subroutine th_exit
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use dfmt
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ncode=0
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call ExitThread(ncode)
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return
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end subroutine th_exit
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subroutine cs_lock(csub)
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use dfmt
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character*(*) csub
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character*12 csub0
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common/mtxcom/ltrace,mtx,mtxstate,csub0
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n=TryEnterCriticalSection(mtx)
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if(n.eq.0) then
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! Another thread has already locked the mutex
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call EnterCriticalSection(mtx)
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iz=index(csub0,' ')
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if(ltrace.ge.1) print*,'"',csub,'" requested the mutex when "', &
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csub0(:iz-1),'" owned it.'
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endif
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mtxstate=1
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csub0=csub
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if(ltrace.ge.3) print*,'Mutex locked by ',csub
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return
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end subroutine cs_lock
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subroutine cs_unlock
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use dfmt
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character*12 csub0
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common/mtxcom/ltrace,mtx,mtxstate,csub0
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mtxstate=0
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if(ltrace.ge.3) print*,'Mutex unlocked'
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call LeaveCriticalSection(mtx)
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return
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end subroutine cs_unlock
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