/* src/mm/boehm.c - interface for boehm 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, 2007, 2008
+ CACAOVM - Verein zur Foerderung der freien virtuellen Maschine CACAO
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.
-
- Contact: cacao@complang.tuwien.ac.at
-
- Authors: Stefan Ring
-
- Changes: Christian Thalinger
-
- $Id: boehm.c 3551 2005-11-03 20:43:01Z twisti $
+ Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA
+ 02110-1301, USA.
*/
#include "config.h"
-#include "vm/types.h"
-#if defined(USE_THREADS) && defined(NATIVE_THREADS) && defined(__LINUX__)
+#include <stdint.h>
+
+#if defined(ENABLE_THREADS) && defined(__LINUX__)
#define GC_LINUX_THREADS
#endif
-#if defined(USE_THREADS) && defined(NATIVE_THREADS) && defined(__IRIX__)
+#if defined(ENABLE_THREADS) && defined(__IRIX__)
#define GC_IRIX_THREADS
#endif
+#if defined(ENABLE_THREADS) && defined(__DARWIN__)
+#define GC_DARWIN_THREADS
+#endif
#include "boehm-gc/include/gc.h"
-#include "mm/boehm.h"
+#include "mm/gc-common.h"
#include "mm/memory.h"
-#if defined(USE_THREADS)
-# if defined(NATIVE_THREADS)
-# include "threads/native/threads.h"
-# else
-# include "threads/green/threads.h"
-# endif
-#endif
-
#include "toolbox/logging.h"
-#include "vm/options.h"
+
#include "vm/builtin.h"
#include "vm/exceptions.h"
#include "vm/finalizer.h"
#include "vm/global.h"
-#include "vm/loader.h"
#include "vm/stringlocal.h"
-#include "vm/tables.h"
-#include "vm/jit/asmpart.h"
+#include "vm/vm.h"
+
+#include "vmcore/loader.h"
+#include "vmcore/options.h"
+#include "vmcore/rt-timing.h"
/* global variables ***********************************************************/
static bool in_gc_out_of_memory = false; /* is GC out of memory? */
-static void
-#ifdef __GNUC__
- __attribute__ ((unused))
-#endif
-*stackcall_twoargs(struct otherstackcall *p)
-{
- return (*p->p2)(p->p, p->l);
-}
+/* prototype static functions *************************************************/
+static void gc_ignore_warnings(char *msg, GC_word arg);
-static void *stackcall_malloc(void *p, u4 bytelength)
-{
- return GC_MALLOC(bytelength);
-}
+/* gc_init *********************************************************************
-static void *stackcall_malloc_atomic(void *p, u4 bytelength)
-{
- return GC_MALLOC_ATOMIC(bytelength);
-}
+ Initializes the boehm garbage collector.
+*******************************************************************************/
-static void *stackcall_malloc_uncollectable(void *p, u4 bytelength)
+void gc_init(size_t heapmaxsize, size_t heapstartsize)
{
- return GC_MALLOC_UNCOLLECTABLE(bytelength);
-}
+ size_t heapcurrentsize;
+ TRACESUBSYSTEMINITIALIZATION("gc_init");
-static void *stackcall_free(void *p, u4 bytelength)
-{
- GC_FREE(p);
- return NULL;
-}
+ /* just to be sure (should be set to 1 by JAVA_FINALIZATION macro) */
+ GC_java_finalization = 1;
-#if defined(USE_THREADS) && !defined(NATIVE_THREADS)
-#define MAINTHREADCALL(r,m,pp,ll) \
- if (currentThread == NULL || currentThread == mainThread) { \
- r = m(pp, ll); \
- } else { \
- struct otherstackcall sc; \
- sc.p2 = m; \
- sc.p = pp; \
- sc.l = ll; \
- r = (*asm_switchstackandcall)(CONTEXT(mainThread).usedStackTop, \
- stackcall_twoargs, \
- (void**)&(CONTEXT(currentThread).usedStackTop), &sc); \
- }
-#else
-#define MAINTHREADCALL(r,m,pp,ll) \
- { r = m(pp, ll); }
-#endif
+ /* Ignore pointers that do not point to the start of an object. */
+ GC_all_interior_pointers = 0;
-void *heap_alloc_uncollectable(u4 bytelength)
-{
- void *result;
+ /* suppress warnings */
- MAINTHREADCALL(result, stackcall_malloc_uncollectable, NULL, bytelength);
+ GC_set_warn_proc(gc_ignore_warnings);
- /* clear allocated memory region */
+ /* install a GC notifier */
- MSET(result, 0, u1, bytelength);
+ GC_finalize_on_demand = 1;
+ GC_finalizer_notifier = finalizer_notify;
- return result;
-}
+ /* define OOM function */
+ GC_oom_fn = gc_out_of_memory;
-void *heap_allocate(u4 bytelength, bool references, methodinfo *finalizer)
-{
- void *result;
+ GC_INIT();
- if (references) {
- MAINTHREADCALL(result, stackcall_malloc, NULL, bytelength);
+ /* set the maximal heap size */
- } else {
- MAINTHREADCALL(result, stackcall_malloc_atomic, NULL, bytelength);
- }
+ GC_set_max_heap_size(heapmaxsize);
- if (!result)
- return NULL;
+ /* set the initial heap size */
- if (finalizer)
- GC_REGISTER_FINALIZER(result, finalizer_add, 0, 0, 0);
+ heapcurrentsize = GC_get_heap_size();
- /* clear allocated memory region */
+ if (heapstartsize > heapcurrentsize)
+ GC_expand_hp(heapstartsize - heapcurrentsize);
+}
- MSET(result, 0, u1, bytelength);
- return (u1 *) result;
+static void gc_ignore_warnings(char *msg, GC_word arg)
+{
}
-void heap_free(void *p)
+void *heap_alloc_uncollectable(size_t size)
{
- void *result;
+ void *p;
- MAINTHREADCALL(result, stackcall_free, p, 0);
-}
+ p = GC_MALLOC_UNCOLLECTABLE(size);
-static void gc_ignore_warnings(char *msg, GC_word arg)
-{
+ /* clear allocated memory region */
+
+ MSET(p, 0, uint8_t, size);
+
+ return p;
}
-void gc_init(u4 heapmaxsize, u4 heapstartsize)
-{
- size_t heapcurrentsize;
- GC_INIT();
+/* heap_alloc ******************************************************************
- /* set the maximal heap size */
+ Allocates memory on the Java heap.
- GC_set_max_heap_size(heapmaxsize);
+*******************************************************************************/
- /* set the initial heap size */
+void *heap_alloc(size_t size, int references, methodinfo *finalizer, bool collect)
+{
+ void *p;
+#if defined(ENABLE_RT_TIMING)
+ struct timespec time_start, time_end;
+#endif
- heapcurrentsize = GC_get_heap_size();
+ RT_TIMING_GET_TIME(time_start);
- if (heapstartsize > heapcurrentsize) {
- GC_expand_hp(heapstartsize - heapcurrentsize);
- }
+ /* We can't use a bool here for references, as it's passed as a
+ bitmask in builtin_new. Thus we check for != 0. */
- /* define OOM function */
+ if (references != 0)
+ p = GC_MALLOC(size);
+ else
+ p = GC_MALLOC_ATOMIC(size);
- GC_oom_fn = gc_out_of_memory;
+ if (p == NULL)
+ return NULL;
- /* suppress warnings */
+ if (finalizer != NULL)
+ GC_REGISTER_FINALIZER_NO_ORDER(p, finalizer_run, 0, 0, 0);
- GC_set_warn_proc(gc_ignore_warnings);
+ /* clear allocated memory region */
+
+ MSET(p, 0, uint8_t, size);
+
+ RT_TIMING_GET_TIME(time_end);
+ RT_TIMING_TIME_DIFF(time_start, time_end, RT_TIMING_GC_ALLOC);
+
+ return p;
}
+void heap_free(void *p)
+{
+ GC_FREE(p);
+}
+
void gc_call(void)
{
if (opt_verbosegc)
}
-s8 gc_get_heap_size(void)
+int64_t gc_get_heap_size(void)
{
return GC_get_heap_size();
}
-s8 gc_get_free_bytes(void)
+int64_t gc_get_free_bytes(void)
{
return GC_get_free_bytes();
}
-s8 gc_get_max_heap_size(void)
+/* gc_get_total_bytes **********************************************************
+
+ Returns the number of total bytes currently used on the Java heap.
+
+*******************************************************************************/
+
+int64_t gc_get_total_bytes(void)
+{
+ return GC_get_total_bytes();
+}
+
+
+int64_t gc_get_max_heap_size(void)
{
return GC_get_max_heap_size();
}
if (in_gc_out_of_memory) {
/* this is all we can do... */
- throw_cacao_exception_exit(string_java_lang_InternalError,
- "Out of memory");
+ vm_abort("gc_out_of_memory: out of memory");
}
in_gc_out_of_memory = true;
/* now instantiate the exception */
- *exceptionptr = new_exception(string_java_lang_OutOfMemoryError);
+ exceptions_throw_outofmemoryerror();
in_gc_out_of_memory = false;