-/* boehm.c *********************************************************************
+/* mm/boehm.c - interface for boehm gc
- Copyright (c) 1997 A. Krall, R. Grafl, M. Gschwind, M. Probst
+ 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
- See file COPYRIGHT for information on usage and disclaimer of warranties
+ This file is part of CACAO.
- Contains the interface to the Boehm GC
+ This program is free software; you can redistribute it and/or
+ modify it under the terms of the GNU General Public License as
+ published by the Free Software Foundation; either version 2, or (at
+ your option) any later version.
- Authors: Reinhard Grafl EMAIL: cacao@complang.tuwien.ac.at
- Changes: Andi Krall EMAIL: cacao@complang.tuwien.ac.at
- Mark Probst EMAIL: cacao@complang.tuwien.ac.at
- Philipp Tomsich EMAIL: cacao@complang.tuwien.ac.at
+ This program is distributed in the hope that it will be useful, but
+ WITHOUT ANY WARRANTY; without even the implied warranty of
+ MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
+ General Public License for more details.
- Last Change: $Id: boehm.c 505 2003-10-22 19:41:36Z twisti $
+ 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
+
+ $Id: boehm.c 1735 2004-12-07 14:33:27Z twisti $
+
+*/
+
+#if defined(USE_THREADS) && defined(NATIVE_THREADS) && defined(__LINUX__)
+#define GC_LINUX_THREADS
+#endif
+#if defined(USE_THREADS) && defined(NATIVE_THREADS) && defined(__IRIX__)
+#define GC_IRIX_THREADS
+#endif
-#include "global.h"
-#include "threads/thread.h"
-#include "asmpart.h"
+#include "boehm-gc/include/gc.h"
+#include "mm/boehm.h"
-#include "gc.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/global.h"
+#include "vm/loader.h"
+#include "vm/tables.h"
+#include "vm/jit/asmpart.h"
-struct otherstackcall;
-typedef void *(*calltwoargs)(void *, u4);
+static bool in_gc_out_of_memory = false; /* is GC out of memory? */
-struct otherstackcall {
- calltwoargs p2;
- void *p;
- u4 l;
-};
-static void *stackcall_twoargs(struct otherstackcall *p)
+static void
+#ifdef __GNUC__
+ __attribute__ ((unused))
+#endif
+*stackcall_twoargs(struct otherstackcall *p)
{
return (*p->p2)(p->p, p->l);
}
+
static void *stackcall_malloc(void *p, u4 bytelength)
{
return GC_MALLOC(bytelength);
}
+
static void *stackcall_malloc_atomic(void *p, u4 bytelength)
{
return GC_MALLOC_ATOMIC(bytelength);
}
+
static void *stackcall_malloc_uncollectable(void *p, u4 bytelength)
{
return GC_MALLOC_UNCOLLECTABLE(bytelength);
}
+
static void *stackcall_realloc(void *p, u4 bytelength)
{
return GC_REALLOC(p, bytelength);
}
-#ifdef USE_THREADS
+static void *stackcall_free(void *p, u4 bytelength)
+{
+ GC_FREE(p);
+ return NULL;
+}
+
+
+#if defined(USE_THREADS) && !defined(NATIVE_THREADS)
#define MAINTHREADCALL(r,m,pp,ll) \
if (currentThread == NULL || currentThread == mainThread) { \
r = m(pp, ll); \
{ r = m(pp, ll); }
#endif
+
void *heap_alloc_uncollectable(u4 bytelength)
{
void *result;
return result;
}
+
void runboehmfinalizer(void *o, void *p)
{
java_objectheader *ob = (java_objectheader *) o;
- asm_calljavamethod(ob->vftbl->class->finalizer, ob, NULL, NULL, NULL);
+
+ asm_calljavafunction(ob->vftbl->class->finalizer, ob, NULL, NULL, NULL);
+
+ /* if we had an exception in the finalizer, ignore it */
+ *exceptionptr = NULL;
}
-void *heap_allocate (u4 bytelength, bool references, methodinfo *finalizer)
+
+void *heap_allocate(u4 bytelength, bool references, methodinfo *finalizer)
{
void *result;
- if (references)
- { MAINTHREADCALL(result, stackcall_malloc, NULL, bytelength); }
- else
- { MAINTHREADCALL(result, stackcall_malloc_atomic, NULL, bytelength); }
+
+ if (references) {
+ MAINTHREADCALL(result, stackcall_malloc, NULL, bytelength);
+
+ } else {
+ MAINTHREADCALL(result, stackcall_malloc_atomic, NULL, bytelength);
+ }
+
+ if (!result) {
+ return NULL;
+ }
+
if (finalizer)
GC_REGISTER_FINALIZER(result, runboehmfinalizer, 0, 0, 0);
+
return (u1*) result;
}
+
void *heap_reallocate(void *p, u4 bytelength)
{
void *result;
+
MAINTHREADCALL(result, stackcall_realloc, p, bytelength);
+
return result;
}
-void heap_init (u4 size, u4 startsize, void **stackbottom)
+void heap_free(void *p)
+{
+ void *result;
+
+ MAINTHREADCALL(result, stackcall_free, p, 0);
+}
+
+static void gc_ignore_warnings(char *msg, GC_word arg)
+{
+}
+
+void gc_init(u4 heapmaxsize, u4 heapstartsize)
{
+ size_t heapcurrentsize;
+
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);
+ }
+
+ /* define OOM function */
+ GC_oom_fn = gc_out_of_memory;
+
+ /* suppress warnings */
+ GC_set_warn_proc(gc_ignore_warnings);
}
-void heap_close()
+
+void gc_call()
{
+ if (collectverbose)
+ dolog("Garbage Collection: previous/now = %d / %d ",
+ 0, 0);
+
+ GC_gcollect();
}
-void heap_addreference (void **reflocation)
+
+s8 gc_get_heap_size()
{
+ return GC_get_heap_size();
}
-int collectverbose;
-void gc_init()
+s8 gc_get_free_bytes()
{
+ return GC_get_free_bytes();
}
-void gc_call()
+
+s8 gc_get_max_heap_size()
{
- if (collectverbose) {
- sprintf(logtext, "Garbage Collection: previous/now = %d / %d ",
- 0, 0);
- dolog();
- }
+ return GC_get_max_heap_size();
+}
- GC_gcollect();
+
+void gc_invoke_finalizers()
+{
+ GC_invoke_finalizers();
}
+
+void gc_finalize_all()
+{
+ GC_finalize_all();
+}
+
+
+/* gc_out_of_memory ************************************************************
+
+ This function is called when boehm detects that it is OOM.
+
+*******************************************************************************/
+
+void *gc_out_of_memory()
+{
+ /* if this happens, we are REALLY out of memory */
+
+ if (in_gc_out_of_memory) {
+ /* this is all we can do... */
+ throw_cacao_exception_exit(string_java_lang_InternalError,
+ "Out of memory");
+ }
+
+ 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;
+}
+
+
/*
* These are local overrides for various environment variables in Emacs.
* Please do not remove this and leave it at the end of the file, where
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