-/* mm/boehm.c - interface for boehm gc
+/* src/mm/boehm.c - interface for boehm gc
- Copyright (C) 1996, 1997, 1998, 1999, 2000, 2001, 2002, 2003
- R. Grafl, A. Krall, C. Kruegel, C. Oates, R. Obermaisser,
- M. Probst, S. Ring, E. Steiner, C. Thalinger, D. Thuernbeck,
- P. Tomsich, J. Wenninger
+ 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.
+ Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA
+ 02110-1301, USA.
- Contact: cacao@complang.tuwien.ac.at
+*/
- Authors: Stefan Ring
- $Id: boehm.c 662 2003-11-21 18:06:25Z jowenn $
+#include "config.h"
-*/
+#include <stdint.h>
+#if defined(ENABLE_THREADS) && defined(__LINUX__)
+#define GC_LINUX_THREADS
+#endif
+#if defined(ENABLE_THREADS) && defined(__IRIX__)
+#define GC_IRIX_THREADS
+#endif
+#if defined(ENABLE_THREADS) && defined(__DARWIN__)
+#define GC_DARWIN_THREADS
+#endif
-#include "main.h"
-#include "boehm.h"
-#include "global.h"
-#include "threads/thread.h"
-#include "asmpart.h"
-#include "toolbox/loging.h"
+#include "boehm-gc/include/gc.h"
+#include "mm/gc-common.h"
+#include "mm/memory.h"
-/* this is temporary workaround */
-#if defined(__X86_64__)
-#define GC_DEBUG
-#endif
+#include "toolbox/logging.h"
-#include "gc.h"
+#include "vm/builtin.h"
+#include "vm/exceptions.h"
+#include "vm/finalizer.h"
+#include "vm/global.h"
+#include "vm/stringlocal.h"
+#include "vm/vm.h"
+#include "vmcore/loader.h"
+#include "vmcore/options.h"
+#include "vmcore/rt-timing.h"
-static void *stackcall_twoargs(struct otherstackcall *p)
-{
- return (*p->p2)(p->p, p->l);
-}
+/* global variables ***********************************************************/
-static void *stackcall_malloc(void *p, u4 bytelength)
-{
- return GC_MALLOC(bytelength);
-}
+static bool in_gc_out_of_memory = false; /* is GC out of memory? */
-static void *stackcall_malloc_atomic(void *p, u4 bytelength)
+/* prototype static functions *************************************************/
+
+static void gc_ignore_warnings(char *msg, GC_word arg);
+
+
+/* gc_init *********************************************************************
+
+ Initializes the boehm garbage collector.
+
+*******************************************************************************/
+
+void gc_init(size_t heapmaxsize, size_t heapstartsize)
{
- return GC_MALLOC_ATOMIC(bytelength);
+ size_t heapcurrentsize;
+
+ TRACESUBSYSTEMINITIALIZATION("gc_init");
+
+ /* just to be sure (should be set to 1 by JAVA_FINALIZATION macro) */
+
+ GC_java_finalization = 1;
+
+ /* Ignore pointers that do not point to the start of an object. */
+
+ GC_all_interior_pointers = 0;
+
+ /* suppress warnings */
+
+ GC_set_warn_proc(gc_ignore_warnings);
+
+ /* install a GC notifier */
+
+ GC_finalize_on_demand = 1;
+ GC_finalizer_notifier = finalizer_notify;
+
+ /* define OOM function */
+
+ GC_oom_fn = gc_out_of_memory;
+
+ GC_INIT();
+
+ /* set the maximal heap size */
+
+ GC_set_max_heap_size(heapmaxsize);
+
+ /* set the initial heap size */
+
+ heapcurrentsize = GC_get_heap_size();
+
+ if (heapstartsize > heapcurrentsize)
+ GC_expand_hp(heapstartsize - heapcurrentsize);
}
-static void *stackcall_malloc_uncollectable(void *p, u4 bytelength)
+static void gc_ignore_warnings(char *msg, GC_word arg)
{
- return GC_MALLOC_UNCOLLECTABLE(bytelength);
}
-static void *stackcall_realloc(void *p, u4 bytelength)
+void *heap_alloc_uncollectable(size_t size)
{
- return GC_REALLOC(p, bytelength);
-}
+ void *p;
+ p = GC_MALLOC_UNCOLLECTABLE(size);
-#ifdef USE_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
+ /* clear allocated memory region */
+ MSET(p, 0, uint8_t, size);
-void *heap_alloc_uncollectable(u4 bytelength)
-{
- void *result;
- MAINTHREADCALL(result, stackcall_malloc_uncollectable, NULL, bytelength);
- return result;
+ return p;
}
-void runboehmfinalizer(void *o, void *p)
+/* heap_alloc ******************************************************************
+
+ Allocates memory on the Java heap.
+
+*******************************************************************************/
+
+void *heap_alloc(size_t size, int references, methodinfo *finalizer, bool collect)
{
- java_objectheader *ob = (java_objectheader *) o;
- asm_calljavamethod(ob->vftbl->class->finalizer, ob, NULL, NULL, NULL);
+ void *p;
+#if defined(ENABLE_RT_TIMING)
+ struct timespec time_start, time_end;
+#endif
+
+ RT_TIMING_GET_TIME(time_start);
+
+ /* We can't use a bool here for references, as it's passed as a
+ bitmask in builtin_new. Thus we check for != 0. */
+
+ if (references != 0)
+ p = GC_MALLOC(size);
+ else
+ p = GC_MALLOC_ATOMIC(size);
+
+ if (p == NULL)
+ return NULL;
+
+ if (finalizer != NULL)
+ GC_REGISTER_FINALIZER_NO_ORDER(p, finalizer_run, 0, 0, 0);
+
+ /* 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_allocate(u4 bytelength, bool references, methodinfo *finalizer)
+void heap_free(void *p)
{
- void *result;
+ GC_FREE(p);
+}
- if (references) {
- MAINTHREADCALL(result, stackcall_malloc, NULL, bytelength);
+void gc_call(void)
+{
+ if (opt_verbosegc)
+ dolog("Garbage Collection: previous/now = %d / %d ",
+ 0, 0);
- } else {
- MAINTHREADCALL(result, stackcall_malloc_atomic, NULL, bytelength);
- }
+ GC_gcollect();
+}
- if (finalizer)
- GC_REGISTER_FINALIZER(result, runboehmfinalizer, 0, 0, 0);
- return (u1*) result;
+int64_t gc_get_heap_size(void)
+{
+ return GC_get_heap_size();
}
-void *heap_reallocate(void *p, u4 bytelength)
+int64_t gc_get_free_bytes(void)
{
- void *result;
+ return GC_get_free_bytes();
+}
- MAINTHREADCALL(result, stackcall_realloc, p, bytelength);
- return result;
-}
+/* gc_get_total_bytes **********************************************************
+
+ Returns the number of total bytes currently used on the Java heap.
+*******************************************************************************/
-void heap_init (u4 size, u4 startsize, void **stackbottom)
+int64_t gc_get_total_bytes(void)
{
- GC_INIT();
+ return GC_get_total_bytes();
}
-void heap_close()
+int64_t gc_get_max_heap_size(void)
{
+ return GC_get_max_heap_size();
}
-void heap_addreference(void **reflocation)
+void gc_invoke_finalizers(void)
{
+ GC_invoke_finalizers();
}
-void gc_init()
+void gc_finalize_all(void)
{
+ GC_finalize_all();
}
-void gc_call()
+/* gc_out_of_memory ************************************************************
+
+ This function is called when boehm detects that it is OOM.
+
+*******************************************************************************/
+
+void *gc_out_of_memory(size_t bytes_requested)
{
- if (collectverbose) {
- sprintf(logtext, "Garbage Collection: previous/now = %d / %d ",
- 0, 0);
- dolog();
- }
+ /* if this happens, we are REALLY out of memory */
- GC_gcollect();
+ if (in_gc_out_of_memory) {
+ /* this is all we can do... */
+ vm_abort("gc_out_of_memory: out of memory");
+ }
+
+ in_gc_out_of_memory = true;
+
+ /* try to release some memory */
+
+ gc_call();
+
+ /* now instantiate the exception */
+
+ exceptions_throw_outofmemoryerror();
+
+ in_gc_out_of_memory = false;
+
+ return NULL;
}