/* src/mm/memory.h - macros for memory management
- Copyright (C) 1996-2005, 2006 R. Grafl, A. Krall, C. Kruegel,
- C. Oates, R. Obermaisser, M. Platter, M. Probst, S. Ring,
- E. Steiner, C. Thalinger, D. Thuernbeck, P. Tomsich, C. Ullrich,
- J. Wenninger, Institut f. Computersprachen - TU Wien
+ Copyright (C) 1996-2005, 2006, 2007, 2008
+ CACAOVM - Verein zur Foerderung der freien virtuellen Maschine CACAO
This file is part of CACAO.
Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA
02110-1301, USA.
- Contact: cacao@cacaojvm.org
-
- Authors: Reinhard Grafl
-
- Changes: Christian Thalinger
-
- $Id: memory.h 6034 2006-11-21 21:02:30Z twisti $
-
*/
#ifndef _MEMORY_H
#define _MEMORY_H
-/* forward typedefs ***********************************************************/
-
-typedef struct dumpblock_t dumpblock_t;
-typedef struct dumpinfo_t dumpinfo_t;
-
#include "config.h"
+#ifdef __cplusplus
+extern "C" {
+#endif
+
#include <string.h>
#include "vm/types.h"
-
-/* ATTENTION: We need to define dumpblock_t and dumpinfo_t before
- internal includes, as we need dumpinfo_t as nested structure in
- threadobject. */
-
-/* dumpblock ******************************************************************/
-
-#define DUMPBLOCKSIZE 2 << 13 /* 2 * 8192 bytes */
-#define ALIGNSIZE 8
-
-struct dumpblock_t {
- dumpblock_t *prev;
- u1 *dumpmem;
- s4 size;
-};
-
-
-/* dump_allocation *************************************************************
-
- This struct is used to record dump memory allocations for ENABLE_MEMCHECK.
-
-*******************************************************************************/
-
-#if defined(ENABLE_MEMCHECK)
-typedef struct dump_allocation_t dump_allocation_t;
-
-struct dump_allocation_t {
- dump_allocation_t *next;
- u1 *mem;
- s4 useddumpsize;
- s4 size;
-};
-#endif
+#include "mm/codememory.h"
+#include "mm/dumpmemory.h"
-/* dumpinfo *******************************************************************/
+/* constants for ENABLE_MEMCHECK **********************************************/
-struct dumpinfo_t {
- dumpblock_t *currentdumpblock; /* the current top-most block */
- s4 allocateddumpsize; /* allocated bytes in this area */
- s4 useddumpsize; /* used bytes in this dump area */
#if defined(ENABLE_MEMCHECK)
- dump_allocation_t *allocations; /* list of allocations in this area */
-#endif
-};
+#define MEMORY_CANARY_SIZE 16
+#define MEMORY_CANARY_FIRST_BYTE 0xca
+#define MEMORY_CLEAR_BYTE 0xa5
+#endif /* defined(ENABLE_MEMCHECK) */
/* internal includes **********************************************************/
mem_realloc ... change size of a memory block (position may change)
mem_usage ..... amount of allocated memory
-
- 2. explicit allocating, automatic deallocating
-
- dump_alloc .... allocate a memory block in the dump area
- dump_realloc .. change size of a memory block (position may change)
- dump_size ..... marks the current top of dump
- dump_release .. free all memory requested after the mark
-
-
There are some useful macros:
NEW (type) ....... allocate memory for an element of type `type`
MREALLOC (ptr,type,num1,num2) .. enlarge the array to size num2
-These macros do the same except they operate on the dump area:
-
- DNEW, DMNEW, DMREALLOC (there is no DFREE)
-
-
-------------------------------------------------------------------------------
Some more macros:
#define MEMORY_ALIGN(pos,size) ((((pos) + (size) - 1) / (size)) * (size))
#define PADDING(pos,size) (MEMORY_ALIGN((pos),(size)) - (pos))
-#define OFFSET(s,el) ((s4) ((ptrint) &(((s*) 0)->el)))
+#define OFFSET(s,el) ((int32_t) ((ptrint) &(((s*) 0)->el)))
#define NEW(type) ((type *) mem_alloc(sizeof(type)))
sizeof(type) * (num2))
-#define DNEW(type) ((type *) dump_alloc(sizeof(type)))
-#define DMNEW(type,num) ((type *) dump_alloc(sizeof(type) * (num)))
-#define DMREALLOC(ptr,type,num1,num2) dump_realloc((ptr), sizeof(type) * (num1), \
- sizeof(type) * (num2))
-
#define MCOPY(dest,src,type,num) memcpy((dest), (src), sizeof(type) * (num))
#define MSET(ptr,byte,type,num) memset((ptr), (byte), sizeof(type) * (num))
#define MZERO(ptr,type,num) MSET(ptr,0,type,num)
#define MMOVE(dest,src,type,num) memmove((dest), (src), sizeof(type) * (num))
-#define CNEW(type,num) ((type *) memory_cnew(sizeof(type) * (num)))
-#define CFREE(ptr,num) memory_cfree((ptr),(num))
+/* GC macros (boehm only) *****************************************************/
-/* GC macros ******************************************************************/
+#if defined(ENABLE_GC_BOEHM)
/* Uncollectable memory which can contain references */
#define GCNEW_UNCOLLECTABLE(type,num) ((type *) heap_alloc_uncollectable(sizeof(type) * (num)))
-#define GCNEW(type) heap_allocate(sizeof(type), true, NULL)
-#define GCMNEW(type,num) heap_allocate(sizeof(type) * (num), true, NULL)
+#define GCNEW(type) heap_alloc(sizeof(type), true, NULL, true)
+#define GCMNEW(type,num) heap_alloc(sizeof(type) * (num), true, NULL, true)
#define GCFREE(ptr) heap_free((ptr))
+#endif
+
/* function prototypes ********************************************************/
-/* initializes the memory subsystem */
-bool memory_init(void);
+bool memory_init(void);
+
+void memory_mprotect(void *addr, size_t len, int prot);
-void *memory_cnew(s4 size);
-void memory_cfree(void *p, s4 size);
+void *memory_checked_alloc(size_t size);
-void *mem_alloc(s4 size);
-void mem_free(void *m, s4 size);
-void *mem_realloc(void *src, s4 len1, s4 len2);
+void *memory_cnew(int32_t size);
+void memory_cfree(void *p, int32_t size);
-void *dump_alloc(s4 size);
-void *dump_realloc(void *src, s4 len1, s4 len2);
-s4 dump_size(void);
-void dump_release(s4 size);
+void *mem_alloc(int32_t size);
+void mem_free(void *m, int32_t size);
+void *mem_realloc(void *src, int32_t len1, int32_t len2);
+
+#if defined(ENABLE_THREADS)
+bool memory_start_thread(void);
+#endif
+
+#ifdef __cplusplus
+}
+#endif
#endif /* _MEMORY_H */
* c-basic-offset: 4
* tab-width: 4
* End:
+ * vim:noexpandtab:sw=4:ts=4:
*/
projects / cacao.git / blobdiff