! Copyright (C) 2004, 2005 Mackenzie Straight
-! Copyright (C) 2007, 2009 Slava Pestov
+! Copyright (C) 2007, 2010 Slava Pestov
! Copyright (C) 2007, 2008 Doug Coleman
! See http://factorcode.org/license.txt for BSD license.
-USING: alien assocs continuations alien.destructors kernel
-namespaces accessors sets summary ;
+USING: accessors alien alien.c-types alien.destructors
+alien.syntax destructors destructors.private kernel math
+namespaces sequences sets summary system vocabs ;
IN: libc
-: errno ( -- int )
- "int" "factor" "err_no" { } alien-invoke ;
+HOOK: strerror os ( errno -- str )
+
+LIBRARY: factor
+
+FUNCTION-ALIAS: errno
+ int err_no ( )
+
+FUNCTION-ALIAS: set-errno
+ void set_err_no ( int err-no )
: clear-errno ( -- )
- "void" "factor" "clear_err_no" { } alien-invoke ;
+ 0 set-errno ;
-<PRIVATE
+: preserve-errno ( quot -- )
+ errno [ call ] dip set-errno ; inline
+
+LIBRARY: libc
+
+FUNCTION-ALIAS: (malloc)
+ void* malloc ( size_t size )
+
+FUNCTION-ALIAS: (calloc)
+ void* calloc ( size_t count, size_t size )
+
+FUNCTION-ALIAS: (free)
+ void free ( void* alien )
+
+FUNCTION-ALIAS: (realloc)
+ void* realloc ( void* alien, size_t size )
+
+FUNCTION-ALIAS: strerror_unsafe
+ char* strerror ( int errno )
+
+! Add a default strerror even though it's not threadsafe
+M: object strerror strerror_unsafe ;
+
+ERROR: libc-error errno message ;
-: (malloc) ( size -- alien )
- "void*" "libc" "malloc" { "ulong" } alien-invoke ;
+: (throw-errno) ( errno -- * ) dup strerror libc-error ;
-: (calloc) ( count size -- alien )
- "void*" "libc" "calloc" { "ulong" "ulong" } alien-invoke ;
+: throw-errno ( -- * ) errno (throw-errno) ;
-: (free) ( alien -- )
- "void" "libc" "free" { "void*" } alien-invoke ;
+: io-error ( n -- ) 0 < [ throw-errno ] when ;
-: (realloc) ( alien size -- newalien )
- "void*" "libc" "realloc" { "void*" "ulong" } alien-invoke ;
+<PRIVATE
+
+! We stick malloc-ptr instances in the global disposables set
+TUPLE: malloc-ptr value continuation ;
+
+M: malloc-ptr hashcode* value>> hashcode* ;
-: mallocs ( -- assoc )
- \ mallocs [ H{ } clone ] initialize-alien ;
+M: malloc-ptr equal?
+ over malloc-ptr? [ [ value>> ] same? ] [ 2drop f ] if ;
+
+: <malloc-ptr> ( value -- malloc-ptr )
+ malloc-ptr new swap >>value ;
PRIVATE>
: check-ptr ( c-ptr -- c-ptr )
[ bad-ptr ] unless* ;
-ERROR: double-free ;
-
-M: double-free summary
- drop "Free failed since memory is not allocated" ;
-
ERROR: realloc-error ptr size ;
M: realloc-error summary
<PRIVATE
: add-malloc ( alien -- alien )
- dup mallocs conjoin ;
+ dup <malloc-ptr> register-disposable ;
: delete-malloc ( alien -- )
- [
- mallocs delete-at*
- [ drop ] [ double-free ] if
- ] when* ;
+ [ <malloc-ptr> unregister-disposable ] when* ;
: malloc-exists? ( alien -- ? )
- mallocs key? ;
+ <malloc-ptr> disposables get in? ;
PRIVATE>
: free ( alien -- )
>c-ptr [ delete-malloc ] [ (free) ] bi ;
-: memcpy ( dst src size -- )
- "void" "libc" "memcpy" { "void*" "void*" "ulong" } alien-invoke ;
+FUNCTION: void memset ( void* buf, int char, size_t size )
-: strlen ( alien -- len )
- "size_t" "libc" "strlen" { "char*" } alien-invoke ;
+FUNCTION: void memcpy ( void* dst, void* src, ulong size )
+
+FUNCTION: void memmove ( void* dst, void* src, ulong size )
+
+FUNCTION: int memcmp ( void* a, void* b, ulong size )
+
+: memory= ( a b size -- ? ) memcmp 0 = ; inline
+
+FUNCTION: size_t strlen ( c-string alien )
+
+FUNCTION: int system ( c-string command )
DESTRUCTOR: free
+
+! For libc.linux, libc.windows, libc.macosx...
+<< "libc." os name>> append require >>