mirror of
https://github.com/xomboverlord/ldc.git
synced 2026-02-17 20:33:12 +01:00
b15b3484c8
Initial commit after moving to Tango instead of Phobos. Lots of bugfixes... This build is not suitable for most things.
156 lines
2.7 KiB
D
156 lines
2.7 KiB
D
/**
|
|
* This module contains a minimal garbage collector implementation according to
|
|
* Tango requirements. This library is mostly intended to serve as an example,
|
|
* but it is usable in applications which do not rely on a garbage collector
|
|
* to clean up memory (ie. when dynamic array resizing is not used, and all
|
|
* memory allocated with 'new' is freed deterministically with 'delete').
|
|
*
|
|
* Please note that block attribute data must be tracked, or at a minimum, the
|
|
* FINALIZE bit must be tracked for any allocated memory block because calling
|
|
* rt_finalize on a non-object block can result in an access violation. In the
|
|
* allocator below, this tracking is done via a leading uint bitmask. A real
|
|
* allocator may do better to store this data separately, similar to the basic
|
|
* GC normally used by Tango.
|
|
*
|
|
* Copyright: Public Domain
|
|
* License: Public Domain
|
|
* Authors: Sean Kelly
|
|
*/
|
|
|
|
private import tango.stdc.stdlib;
|
|
|
|
private
|
|
{
|
|
enum BlkAttr : uint
|
|
{
|
|
FINALIZE = 0b0000_0001,
|
|
NO_SCAN = 0b0000_0010,
|
|
NO_MOVE = 0b0000_0100,
|
|
ALL_BITS = 0b1111_1111
|
|
}
|
|
|
|
struct BlkInfo
|
|
{
|
|
void* base;
|
|
size_t size;
|
|
uint attr;
|
|
}
|
|
|
|
extern (C) void thread_init();
|
|
extern (C) void onOutOfMemoryError();
|
|
}
|
|
|
|
extern (C) void gc_init()
|
|
{
|
|
// NOTE: The GC must initialize the thread library before its first
|
|
// collection, and always before returning from gc_init().
|
|
thread_init();
|
|
}
|
|
|
|
extern (C) void gc_term()
|
|
{
|
|
|
|
}
|
|
|
|
extern (C) void gc_enable()
|
|
{
|
|
|
|
}
|
|
|
|
extern (C) void gc_disable()
|
|
{
|
|
|
|
}
|
|
|
|
extern (C) void gc_collect()
|
|
{
|
|
|
|
}
|
|
|
|
extern (C) uint gc_getAttr( void* p )
|
|
{
|
|
return 0;
|
|
}
|
|
|
|
extern (C) uint gc_setAttr( void* p, uint a )
|
|
{
|
|
return 0;
|
|
}
|
|
|
|
extern (C) uint gc_clrAttr( void* p, uint a )
|
|
{
|
|
return 0;
|
|
}
|
|
|
|
extern (C) void* gc_malloc( size_t sz, uint ba = 0 )
|
|
{
|
|
void* p = malloc( sz );
|
|
|
|
if( sz && p is null )
|
|
onOutOfMemoryError();
|
|
return p;
|
|
}
|
|
|
|
extern (C) void* gc_calloc( size_t sz, uint ba = 0 )
|
|
{
|
|
void* p = calloc( 1, sz );
|
|
|
|
if( sz && p is null )
|
|
onOutOfMemoryError();
|
|
return p;
|
|
}
|
|
|
|
extern (C) void* gc_realloc( void* p, size_t sz, uint ba = 0 )
|
|
{
|
|
p = realloc( p, sz );
|
|
|
|
if( sz && p is null )
|
|
onOutOfMemoryError();
|
|
return p;
|
|
}
|
|
|
|
extern (C) size_t gc_extend( void* p, size_t mx, size_t sz )
|
|
{
|
|
return 0;
|
|
}
|
|
|
|
extern (C) void gc_free( void* p )
|
|
{
|
|
free( p );
|
|
}
|
|
|
|
extern (C) void* gc_addrOf( void* p )
|
|
{
|
|
return null;
|
|
}
|
|
|
|
extern (C) size_t gc_sizeOf( void* p )
|
|
{
|
|
return 0;
|
|
}
|
|
|
|
extern (C) BlkInfo gc_query( void* p )
|
|
{
|
|
return BlkInfo.init;
|
|
}
|
|
|
|
extern (C) void gc_addRoot( void* p )
|
|
{
|
|
|
|
}
|
|
|
|
extern (C) void gc_addRange( void* p, size_t sz )
|
|
{
|
|
|
|
}
|
|
|
|
extern (C) void gc_removeRoot( void *p )
|
|
{
|
|
|
|
}
|
|
|
|
extern (C) void gc_removeRange( void *p )
|
|
{
|
|
|
|
}
|