123 lines
3.4 KiB
Factor
Executable File
123 lines
3.4 KiB
Factor
Executable File
USING: alien alien.c-types arrays assocs combinators
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continuations destructors io io.backend io.ports io.timeouts
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io.windows io.windows.files libc kernel math namespaces
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sequences threads windows windows.errors windows.kernel32
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strings splitting io.files io.buffers qualified ascii system
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accessors locals ;
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QUALIFIED: windows.winsock
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IN: io.windows.nt.backend
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! Global variable with assoc mapping overlapped to threads
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SYMBOL: pending-overlapped
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TUPLE: io-callback port thread ;
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C: <io-callback> io-callback
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: (make-overlapped) ( -- overlapped-ext )
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"OVERLAPPED" malloc-object &free ;
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: make-overlapped ( port -- overlapped-ext )
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>r (make-overlapped)
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r> handle>> ptr>> [ over set-OVERLAPPED-offset ] when* ;
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: <completion-port> ( handle existing -- handle )
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f 1 CreateIoCompletionPort dup win32-error=0/f ;
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SYMBOL: master-completion-port
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: <master-completion-port> ( -- handle )
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INVALID_HANDLE_VALUE f <completion-port> ;
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M: winnt add-completion ( win32-handle -- )
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handle>> master-completion-port get-global <completion-port> drop ;
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: eof? ( error -- ? )
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[ ERROR_HANDLE_EOF = ] [ ERROR_BROKEN_PIPE = ] bi or ;
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: twiddle-thumbs ( overlapped port -- bytes-transferred )
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[
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drop
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[ pending-overlapped get-global set-at ] curry "I/O" suspend
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{
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{ [ dup integer? ] [ ] }
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{ [ dup array? ] [
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first dup eof?
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[ drop 0 ] [ (win32-error-string) throw ] if
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] }
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} cond
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] with-timeout ;
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:: wait-for-overlapped ( ms -- bytes-transferred overlapped error? )
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master-completion-port get-global
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0 <int> [ ! bytes
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f <void*> ! key
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f <void*> [ ! overlapped
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ms INFINITE or ! timeout
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GetQueuedCompletionStatus zero?
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] keep *void*
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] keep *int spin ;
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: resume-callback ( result overlapped -- )
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pending-overlapped get-global delete-at* drop resume-with ;
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: handle-overlapped ( timeout -- ? )
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wait-for-overlapped [
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dup [
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>r drop GetLastError 1array r> resume-callback t
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] [
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2drop f
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] if
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] [
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resume-callback t
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] if ;
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M: win32-handle cancel-operation
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[ check-disposed ] [ handle>> CancelIo drop ] bi ;
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M: winnt io-multiplex ( ms -- )
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handle-overlapped [ 0 io-multiplex ] when ;
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M: winnt init-io ( -- )
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<master-completion-port> master-completion-port set-global
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H{ } clone pending-overlapped set-global
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windows.winsock:init-winsock ;
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: file-error? ( n -- eof? )
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zero? [
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GetLastError {
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{ [ dup expected-io-error? ] [ drop f ] }
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{ [ dup eof? ] [ drop t ] }
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[ (win32-error-string) throw ]
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} cond
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] [ f ] if ;
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: wait-for-file ( FileArgs n port -- n )
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swap file-error?
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[ 2drop 0 ] [ >r lpOverlapped>> r> twiddle-thumbs ] if ;
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: update-file-ptr ( n port -- )
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handle>> dup ptr>> [ rot + >>ptr drop ] [ 2drop ] if* ;
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: finish-write ( n port -- )
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[ update-file-ptr ] [ buffer>> buffer-consume ] 2bi ;
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M: winnt (wait-to-write)
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[
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[ make-FileArgs dup setup-write WriteFile ]
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[ wait-for-file ]
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[ finish-write ]
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tri
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] with-destructors ;
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: finish-read ( n port -- )
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[ update-file-ptr ] [ buffer>> n>buffer ] 2bi ;
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M: winnt (wait-to-read) ( port -- )
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[
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[ make-FileArgs dup setup-read ReadFile ]
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[ wait-for-file ]
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[ finish-read ]
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tri
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] with-destructors ;
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