1 ! Copyright (C) 2004, 2005 Mackenzie Straight
2 ! Copyright (C) 2007, 2010 Slava Pestov
3 ! Copyright (C) 2007, 2008 Doug Coleman
4 ! See http://factorcode.org/license.txt for BSD license.
5 USING: accessors alien alien.c-types alien.destructors
6 alien.syntax destructors destructors.private kernel math
7 namespaces sequences sets summary system vocabs ;
10 HOOK: strerror os ( errno -- str )
17 FUNCTION-ALIAS: set-errno
18 void set_err_no ( int err-no )
23 : preserve-errno ( quot -- )
24 errno [ call ] dip set-errno ; inline
28 FUNCTION-ALIAS: (malloc)
29 void* malloc ( size_t size )
31 FUNCTION-ALIAS: (calloc)
32 void* calloc ( size_t count, size_t size )
34 FUNCTION-ALIAS: (free)
35 void free ( void* alien )
37 FUNCTION-ALIAS: (realloc)
38 void* realloc ( void* alien, size_t size )
40 FUNCTION-ALIAS: strerror_unsafe
41 char* strerror ( int errno )
43 ! Add a default strerror even though it's not threadsafe
44 M: object strerror strerror_unsafe ;
46 ERROR: libc-error errno message ;
48 : (throw-errno) ( errno -- * ) dup strerror libc-error ;
50 : throw-errno ( -- * ) errno (throw-errno) ;
52 : io-error ( n -- ) 0 < [ throw-errno ] when ;
56 ! We stick malloc-ptr instances in the global disposables set
57 TUPLE: malloc-ptr value continuation ;
59 M: malloc-ptr hashcode* value>> hashcode* ;
62 over malloc-ptr? [ [ value>> ] same? ] [ 2drop f ] if ;
64 : <malloc-ptr> ( value -- malloc-ptr )
65 malloc-ptr new swap >>value ;
72 drop "Memory allocation failed" ;
74 : check-ptr ( c-ptr -- c-ptr )
77 ERROR: realloc-error ptr size ;
79 M: realloc-error summary
80 drop "Memory reallocation failed" ;
84 : add-malloc ( alien -- alien )
85 dup <malloc-ptr> register-disposable ;
87 : delete-malloc ( alien -- )
88 [ <malloc-ptr> unregister-disposable ] when* ;
90 : malloc-exists? ( alien -- ? )
91 <malloc-ptr> disposables get in? ;
95 : malloc ( size -- alien )
96 (malloc) check-ptr add-malloc ;
98 : calloc ( count size -- alien )
99 (calloc) check-ptr add-malloc ;
101 : realloc ( alien size -- newalien )
103 over malloc-exists? [ realloc-error ] unless
104 [ drop ] [ (realloc) check-ptr ] 2bi
105 [ delete-malloc ] [ add-malloc ] bi* ;
108 >c-ptr [ delete-malloc ] [ (free) ] bi ;
110 FUNCTION: void memset ( void* buf, int char, size_t size )
112 FUNCTION: void memcpy ( void* dst, void* src, ulong size )
114 FUNCTION: int memcmp ( void* a, void* b, ulong size )
116 : memory= ( a b size -- ? ) memcmp 0 = ; inline
118 FUNCTION: size_t strlen ( c-string alien )
120 FUNCTION: int system ( c-string command )
124 ! For libc.linux, libc.windows, libc.macosx...
125 << "libc." os name>> append require >>