1 ! Copyright (C) 2004, 2005 Mackenzie Straight
2 ! Copyright (C) 2007, 2008 Slava Pestov
3 ! Copyright (C) 2007, 2008 Doug Coleman
4 ! See http://factorcode.org/license.txt for BSD license.
5 USING: alien assocs continuations destructors
6 kernel namespaces accessors sets summary ;
10 "int" "factor" "err_no" { } alien-invoke ;
13 "void" "factor" "clear_err_no" { } alien-invoke ;
17 : (malloc) ( size -- alien )
18 "void*" "libc" "malloc" { "ulong" } alien-invoke ;
20 : (calloc) ( count size -- alien )
21 "void*" "libc" "calloc" { "ulong" "ulong" } alien-invoke ;
24 "void" "libc" "free" { "void*" } alien-invoke ;
26 : (realloc) ( alien size -- newalien )
27 "void*" "libc" "realloc" { "void*" "ulong" } alien-invoke ;
31 : mallocs ( -- assoc )
32 malloc-expiry get-global expired? [
33 -1 <alien> malloc-expiry set-global
34 H{ } clone dup \ mallocs set-global
44 drop "Memory allocation failed" ;
46 : check-ptr ( c-ptr -- c-ptr )
51 M: double-free summary
52 drop "Free failed since memory is not allocated" ;
54 ERROR: realloc-error ptr size ;
56 M: realloc-error summary
57 drop "Memory reallocation failed" ;
61 : add-malloc ( alien -- )
64 : delete-malloc ( alien -- )
67 [ double-free ] unless drop
70 : malloc-exists? ( alien -- ? )
75 : malloc ( size -- alien )
79 : calloc ( count size -- alien )
83 : realloc ( alien size -- newalien )
85 over malloc-exists? [ realloc-error ] unless
86 dupd (realloc) check-ptr
91 >c-ptr [ delete-malloc ] [ (free) ] bi ;
93 : memcpy ( dst src size -- )
94 "void" "libc" "memcpy" { "void*" "void*" "ulong" } alien-invoke ;
96 : strlen ( alien -- len )
97 "size_t" "libc" "strlen" { "char*" } alien-invoke ;
102 TUPLE: memory-destructor alien disposed ;
104 M: memory-destructor dispose* alien>> free ;
108 : &free ( alien -- alien )
109 dup f memory-destructor boa &dispose drop ; inline
111 : |free ( alien -- alien )
112 dup f memory-destructor boa |dispose drop ; inline