/* 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 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
-
- Authors: Stefan Ring
-
- Changes: Christian Thalinger
+*/
- $Id: boehm.c 3422 2005-10-12 13:31:50Z twisti $
-*/
+#include "config.h"
+#include "vm/types.h"
-#if defined(USE_THREADS) && defined(NATIVE_THREADS) && defined(__LINUX__)
+#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
#include "boehm-gc/include/gc.h"
-#include "mm/boehm.h"
-
-#if defined(USE_THREADS)
-# if defined(NATIVE_THREADS)
-# include "threads/native/threads.h"
-# else
-# include "threads/green/threads.h"
-# endif
-#endif
+#include "mm/gc-common.h"
+#include "mm/memory.h"
#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"
+
+
+/* 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(u4 heapmaxsize, u4 heapstartsize)
{
- return GC_MALLOC_UNCOLLECTABLE(bytelength);
-}
+ size_t heapcurrentsize;
+ /* just to be sure (should be set to 1 by JAVA_FINALIZATION macro) */
-static void *stackcall_realloc(void *p, u4 bytelength)
-{
- return GC_REALLOC(p, bytelength);
-}
+ GC_java_finalization = 1;
-static void *stackcall_free(void *p, u4 bytelength)
-{
- GC_FREE(p);
- return NULL;
-}
+ /* Ignore pointers that do not point to the start of an object. */
+ GC_all_interior_pointers = 0;
-#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
+ /* suppress warnings */
+ GC_set_warn_proc(gc_ignore_warnings);
-void *heap_alloc_uncollectable(u4 bytelength)
-{
- void *result;
+ /* install a GC notifier */
- MAINTHREADCALL(result, stackcall_malloc_uncollectable, NULL, bytelength);
+ GC_finalize_on_demand = 1;
+ GC_finalizer_notifier = finalizer_notify;
- /* clear allocated memory region */
+ /* define OOM function */
+
+ GC_oom_fn = gc_out_of_memory;
- MSET(result, 0, u1, bytelength);
+ GC_INIT();
- return result;
-}
+ /* set the maximal heap size */
+ GC_set_max_heap_size(heapmaxsize);
-void runboehmfinalizer(void *o, void *p)
-{
- java_objectheader *ob = (java_objectheader *) o;
+ /* set the initial heap size */
+
+ heapcurrentsize = GC_get_heap_size();
- asm_calljavafunction(ob->vftbl->class->finalizer, ob, NULL, NULL, NULL);
-
- /* if we had an exception in the finalizer, ignore it */
- *exceptionptr = NULL;
+ if (heapstartsize > heapcurrentsize)
+ GC_expand_hp(heapstartsize - heapcurrentsize);
}
-void *heap_allocate(u4 bytelength, bool references, methodinfo *finalizer)
+static void gc_ignore_warnings(char *msg, GC_word arg)
{
- void *result;
-
- if (references) {
- MAINTHREADCALL(result, stackcall_malloc, NULL, bytelength);
+}
- } else {
- MAINTHREADCALL(result, stackcall_malloc_atomic, NULL, bytelength);
- }
- if (!result)
- return NULL;
+void *heap_alloc_uncollectable(u4 bytelength)
+{
+ void *p;
- if (finalizer)
- GC_REGISTER_FINALIZER(result, runboehmfinalizer, 0, 0, 0);
+ p = GC_MALLOC_UNCOLLECTABLE(bytelength);
/* clear allocated memory region */
- MSET(result, 0, u1, bytelength);
+ MSET(p, 0, u1, bytelength);
- return (u1 *) result;
+ return p;
}
-void *heap_reallocate(void *p, u4 bytelength)
-{
- void *result;
+/* heap_allocate ***************************************************************
- MAINTHREADCALL(result, stackcall_realloc, p, bytelength);
+ Allocates memory on the Java heap.
- return result;
-}
+*******************************************************************************/
-void heap_free(void *p)
+void *heap_allocate(u4 bytelength, u4 references, methodinfo *finalizer)
{
- void *result;
-
- MAINTHREADCALL(result, stackcall_free, p, 0);
-}
+ void *p;
-static void gc_ignore_warnings(char *msg, GC_word arg)
-{
-}
+ /* We can't use a bool here for references, as it's passed as a
+ bitmask in builtin_new. Thus we check for != 0. */
-void gc_init(u4 heapmaxsize, u4 heapstartsize)
-{
- size_t heapcurrentsize;
+ if (references != 0)
+ p = GC_MALLOC(bytelength);
+ else
+ p = GC_MALLOC_ATOMIC(bytelength);
- GC_INIT();
+ if (p == NULL)
+ return NULL;
- /* set the maximal heap size */
- GC_set_max_heap_size(heapmaxsize);
+ if (finalizer != NULL)
+ GC_REGISTER_FINALIZER_NO_ORDER(p, finalizer_run, 0, 0, 0);
- /* set the initial heap size */
- heapcurrentsize = GC_get_heap_size();
- if (heapstartsize > heapcurrentsize) {
- GC_expand_hp(heapstartsize - heapcurrentsize);
- }
+ /* clear allocated memory region */
- /* define OOM function */
- GC_oom_fn = gc_out_of_memory;
+ MSET(p, 0, u1, bytelength);
- /* suppress warnings */
- GC_set_warn_proc(gc_ignore_warnings);
+ return p;
}
+void heap_free(void *p)
+{
+ GC_FREE(p);
+}
+
void gc_call(void)
{
if (opt_verbosegc)
}
+/* gc_get_total_bytes **********************************************************
+
+ Returns the number of total bytes currently used on the Java heap.
+
+*******************************************************************************/
+
+s8 gc_get_total_bytes(void)
+{
+ return GC_get_total_bytes();
+}
+
+
s8 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;
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