118 lines
2.6 KiB
Factor
118 lines
2.6 KiB
Factor
! Copyright (C) 2004, 2005 Mackenzie Straight
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! Copyright (C) 2007, 2010 Slava Pestov
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! Copyright (C) 2007, 2008 Doug Coleman
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! See http://factorcode.org/license.txt for BSD license.
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USING: accessors alien alien.c-types alien.destructors alien.syntax assocs
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combinators continuations destructors destructors.private kernel math
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namespaces prettyprint sequences sets summary system vocabs vocabs.parser ;
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IN: libc
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<< "libc." os unparse append require >>
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LIBRARY: factor
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FUNCTION-ALIAS: errno
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int err_no ( ) ;
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FUNCTION-ALIAS: set-errno
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void set_err_no ( int err-no ) ;
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: clear-errno ( -- )
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0 set-errno ;
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: preserve-errno ( quot -- )
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errno [ call ] dip set-errno ; inline
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LIBRARY: libc
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FUNCTION: c-string strerror ( int errno ) ;
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ERROR: libc-error errno message ;
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: (io-error) ( -- * ) errno dup strerror libc-error ;
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: io-error ( n -- ) 0 < [ (io-error) ] when ;
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FUNCTION-ALIAS: (malloc)
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void* malloc ( size_t size ) ;
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FUNCTION-ALIAS: (calloc)
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void* calloc ( size_t count, size_t size ) ;
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FUNCTION-ALIAS: (free)
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void free ( void* alien ) ;
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FUNCTION-ALIAS: (realloc)
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void* realloc ( void* alien, size_t size ) ;
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<PRIVATE
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! We stick malloc-ptr instances in the global disposables set
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TUPLE: malloc-ptr value continuation ;
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M: malloc-ptr hashcode* value>> hashcode* ;
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M: malloc-ptr equal?
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over malloc-ptr? [ [ value>> ] same? ] [ 2drop f ] if ;
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: <malloc-ptr> ( value -- malloc-ptr )
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malloc-ptr new swap >>value ;
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PRIVATE>
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ERROR: bad-ptr ;
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M: bad-ptr summary
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drop "Memory allocation failed" ;
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: check-ptr ( c-ptr -- c-ptr )
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[ bad-ptr ] unless* ;
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ERROR: realloc-error ptr size ;
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M: realloc-error summary
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drop "Memory reallocation failed" ;
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<PRIVATE
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: add-malloc ( alien -- alien )
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dup <malloc-ptr> register-disposable ;
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: delete-malloc ( alien -- )
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[ <malloc-ptr> unregister-disposable ] when* ;
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: malloc-exists? ( alien -- ? )
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<malloc-ptr> disposables get in? ;
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PRIVATE>
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: malloc ( size -- alien )
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(malloc) check-ptr add-malloc ;
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: calloc ( count size -- alien )
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(calloc) check-ptr add-malloc ;
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: realloc ( alien size -- newalien )
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[ >c-ptr ] dip
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over malloc-exists? [ realloc-error ] unless
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[ drop ] [ (realloc) check-ptr ] 2bi
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[ delete-malloc ] [ add-malloc ] bi* ;
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: free ( alien -- )
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>c-ptr [ delete-malloc ] [ (free) ] bi ;
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FUNCTION: void memset ( void* buf, int char, size_t size ) ;
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FUNCTION: void memcpy ( void* dst, void* src, ulong size ) ;
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FUNCTION: int memcmp ( void* a, void* b, ulong size ) ;
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: memory= ( a b size -- ? ) memcmp 0 = ; inline
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FUNCTION: size_t strlen ( c-string alien ) ;
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FUNCTION: int system ( c-string command ) ;
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DESTRUCTOR: free
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DESTRUCTOR: (free)
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