/* src/mm/nogc.c - allocates memory through malloc (no GC)
- Copyright (C) 1996-2005 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 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
This file is part of CACAO.
You should have received a copy of the GNU General Public License
along with this program; if not, write to the Free Software
- Foundation, Inc., 59 Temple Place - Suite 330, Boston, MA
- 02111-1307, USA.
+ Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA
+ 02110-1301, USA.
- Contact: cacao@complang.tuwien.ac.at
+ Contact: cacao@cacaojvm.org
Authors: Christian Thalinger
Changes:
- $Id: nogc.c 2678 2005-06-14 16:08:58Z twisti $
+ $Id: nogc.c 4357 2006-01-22 23:33:38Z twisti $
*/
#include <stdlib.h>
+#include <sys/mman.h>
+
+#include "config.h"
+#include "vm/types.h"
#include "boehm-gc/include/gc.h"
#include "vm/global.h"
#include "vm/loader.h"
#include "vm/stringlocal.h"
-#include "vm/tables.h"
-void *heap_alloc_uncollectable(u4 size)
-{
- void *m;
+/* global stuff ***************************************************************/
- m = calloc(size, 1);
+#define MMAP_HEAPADDRESS 0x10000000 /* try to map the heap to this addr. */
+#define ALIGNSIZE 8
- if (!m)
- throw_cacao_exception_exit(string_java_lang_InternalError,
- "Out of memory");
-
- return m;
-}
+static void *mmapptr = NULL;
+static int mmapsize = 0;
+static void *mmaptop = NULL;
void *heap_allocate(u4 size, bool references, methodinfo *finalizer)
{
void *m;
- m = calloc(size, 1);
+ mmapptr = (void *) ALIGN((ptrint) mmapptr, ALIGNSIZE);
+
+ m = mmapptr;
+ mmapptr = (void *) ((ptrint) mmapptr + size);
- if (!m)
+ if (mmapptr > mmaptop)
throw_cacao_exception_exit(string_java_lang_InternalError,
"Out of memory");
-
+
+ MSET(m, 0, u1, size);
+
return m;
}
-void *heap_reallocate(void *p, u4 size)
+void *heap_alloc_uncollectable(u4 size)
{
- void *m;
+ return heap_allocate(size, false, NULL);
+}
- m = realloc(p, size);
- if (!m)
- throw_cacao_exception_exit(string_java_lang_InternalError,
- "Out of memory");
-
- return m;
+void *nogc_realloc(void *src, s4 len1, s4 len2)
+{
+ void *p;
+
+ p = heap_allocate(len2, false, NULL);
+
+ MCOPY(p, src, u1, len1);
+
+ return p;
+}
+
+
+void heap_free(void *p)
+{
+ /* nop */
}
-static void gc_ignore_warnings(char *msg, GC_word arg)
+
+void nogc_init(u4 heapmaxsize, u4 heapstartsize)
{
+ heapmaxsize = ALIGN(heapmaxsize, ALIGNSIZE);
+
+ mmapptr = mmap((void *) MMAP_HEAPADDRESS,
+ (size_t) heapmaxsize,
+ PROT_READ | PROT_WRITE,
+ MAP_PRIVATE | MAP_ANONYMOUS,
+ -1,
+ (off_t) 0);
+
+ if (mmapptr == MAP_FAILED)
+ throw_cacao_exception_exit(string_java_lang_InternalError,
+ "Out of memory");
+
+ mmapsize = heapmaxsize;
+ mmaptop = (void *) ((ptrint) mmapptr + mmapsize);
}
void gc_init(u4 heapmaxsize, u4 heapstartsize)
{
+ /* nop */
}
-void gc_call()
+void gc_call(void)
{
log_text("GC call: nothing done...");
/* nop */
}
-s8 gc_get_heap_size()
+s8 gc_get_heap_size(void)
{
return 0;
}
-s8 gc_get_free_bytes()
+s8 gc_get_free_bytes(void)
{
return 0;
}
-s8 gc_get_max_heap_size()
+s8 gc_get_max_heap_size(void)
{
return 0;
}
-void gc_invoke_finalizers()
+void gc_invoke_finalizers(void)
{
/* nop */
}
-void gc_finalize_all()
+void gc_finalize_all(void)
{
/* nop */
}