-/* 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 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: Stefan Ring
- $Id: boehm.c 771 2003-12-13 23:11:08Z stefan $
+ Changes: Christian Thalinger
+
+ $Id: boehm.c 5144 2006-07-17 11:09:21Z twisti $
*/
-#include "main.h"
-#include "boehm.h"
-#include "global.h"
-#include "threads/thread.h"
-#include "asmpart.h"
-#include "toolbox/loging.h"
+#include "config.h"
+#include "vm/types.h"
-/* this is temporary workaround */
-#if defined(__X86_64__)
-#define GC_DEBUG
+#if defined(ENABLE_THREADS) && defined(__LINUX__)
+#define GC_LINUX_THREADS
+#endif
+#if defined(ENABLE_THREADS) && defined(__IRIX__)
+#define GC_IRIX_THREADS
#endif
-#include "gc.h"
+#include "boehm-gc/include/gc.h"
+#include "mm/boehm.h"
+#include "mm/memory.h"
+#if defined(ENABLE_THREADS)
+# include "threads/native/threads.h"
+#endif
-static void *stackcall_twoargs(struct otherstackcall *p)
-{
- return (*p->p2)(p->p, p->l);
-}
+#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"
-static void *stackcall_malloc(void *p, u4 bytelength)
-{
- return GC_MALLOC(bytelength);
-}
+/* global variables ***********************************************************/
+static bool in_gc_out_of_memory = false; /* is GC out of memory? */
-static void *stackcall_malloc_atomic(void *p, u4 bytelength)
-{
- return GC_MALLOC_ATOMIC(bytelength);
-}
+/* prototype static functions *************************************************/
-static void *stackcall_malloc_uncollectable(void *p, u4 bytelength)
-{
- return GC_MALLOC_UNCOLLECTABLE(bytelength);
-}
+static void gc_ignore_warnings(char *msg, GC_word arg);
-static void *stackcall_realloc(void *p, u4 bytelength)
-{
- return GC_REALLOC(p, bytelength);
-}
+/* gc_init *********************************************************************
-static void *stackcall_free(void *p, u4 bytelength)
+ Initializes the boehm garbage collector.
+
+*******************************************************************************/
+
+void gc_init(u4 heapmaxsize, u4 heapstartsize)
{
- GC_FREE(p);
- return NULL;
-}
+ size_t heapcurrentsize;
+
+ GC_INIT();
+
+ /* set the maximal heap size */
+
+ GC_set_max_heap_size(heapmaxsize);
+ /* set the initial heap 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); \
+ heapcurrentsize = GC_get_heap_size();
+
+ if (heapstartsize > heapcurrentsize) {
+ GC_expand_hp(heapstartsize - heapcurrentsize);
}
-#else
-#define MAINTHREADCALL(r,m,pp,ll) \
- { r = m(pp, ll); }
-#endif
+ /* define OOM function */
-void *heap_alloc_uncollectable(u4 bytelength)
-{
- void *result;
- MAINTHREADCALL(result, stackcall_malloc_uncollectable, NULL, bytelength);
- return result;
+ GC_oom_fn = gc_out_of_memory;
+
+ /* just to be sure (should be set to 1 by JAVA_FINALIZATION macro) */
+
+ GC_java_finalization = 1;
+
+ /* suppress warnings */
+
+ GC_set_warn_proc(gc_ignore_warnings);
+
+ /* install a GC notifier */
+
+ GC_finalize_on_demand = 1;
+ GC_finalizer_notifier = finalizer_notify;
}
-void runboehmfinalizer(void *o, void *p)
+static void gc_ignore_warnings(char *msg, GC_word arg)
{
- java_objectheader *ob = (java_objectheader *) o;
- asm_calljavafunction(ob->vftbl->class->finalizer, ob, NULL, NULL, NULL);
}
-void *heap_allocate(u4 bytelength, bool references, methodinfo *finalizer)
+void *heap_alloc_uncollectable(u4 bytelength)
{
- void *result;
+ void *p;
- if (references) {
- MAINTHREADCALL(result, stackcall_malloc, NULL, bytelength);
+ p = GC_MALLOC_UNCOLLECTABLE(bytelength);
- } else {
- MAINTHREADCALL(result, stackcall_malloc_atomic, NULL, bytelength);
- }
+ /* clear allocated memory region */
- if (finalizer)
- GC_REGISTER_FINALIZER(result, runboehmfinalizer, 0, 0, 0);
+ MSET(p, 0, u1, bytelength);
- return (u1*) result;
+ return p;
}
-void *heap_reallocate(void *p, u4 bytelength)
+/* heap_allocate ***************************************************************
+
+ Allocates memory on the Java heap.
+
+*******************************************************************************/
+
+void *heap_allocate(u4 bytelength, u4 references, methodinfo *finalizer)
{
- void *result;
+ void *p;
+
+ /* 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(bytelength);
+ else
+ p = GC_MALLOC_ATOMIC(bytelength);
- MAINTHREADCALL(result, stackcall_realloc, p, bytelength);
+ if (p == NULL)
+ return NULL;
- return result;
+ if (finalizer != NULL)
+ GC_REGISTER_FINALIZER(p, finalizer_run, 0, 0, 0);
+
+ /* clear allocated memory region */
+
+ MSET(p, 0, u1, bytelength);
+
+ return p;
}
+
void heap_free(void *p)
{
- void *result;
+ GC_FREE(p);
+}
+
+void gc_call(void)
+{
+ if (opt_verbosegc)
+ dolog("Garbage Collection: previous/now = %d / %d ",
+ 0, 0);
- MAINTHREADCALL(result, stackcall_free, p, 0);
+ GC_gcollect();
}
-void heap_init (u4 size, u4 startsize, void **stackbottom)
+s8 gc_get_heap_size(void)
{
- GC_INIT();
+ return GC_get_heap_size();
}
-void heap_close()
+s8 gc_get_free_bytes(void)
{
+ return GC_get_free_bytes();
}
-void heap_addreference(void **reflocation)
+s8 gc_get_max_heap_size(void)
{
+ return GC_get_max_heap_size();
}
-void gc_init()
+void gc_invoke_finalizers(void)
{
+ GC_invoke_finalizers();
}
-void gc_call()
+void gc_finalize_all(void)
{
- if (collectverbose)
- dolog("Garbage Collection: previous/now = %d / %d ",
- 0, 0);
+ GC_finalize_all();
+}
- GC_gcollect();
+
+/* 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 this happens, we are REALLY out of memory */
+
+ if (in_gc_out_of_memory) {
+ /* this is all we can do... */
+ exceptions_throw_outofmemory_exit();
+ }
+
+ in_gc_out_of_memory = true;
+
+ /* try to release some memory */
+
+ gc_call();
+
+ /* now instantiate the exception */
+
+ *exceptionptr = new_exception(string_java_lang_OutOfMemoryError);
+
+ in_gc_out_of_memory = false;
+
+ return NULL;
}
projects / cacao.git / blobdiff