ffi.h.in (ffi_closure_alloc, [...]): New.

libffi/ChangeLog:
* include/ffi.h.in (ffi_closure_alloc, ffi_closure_free): New.
(ffi_prep_closure_loc): New.
(ffi_prep_raw_closure_loc): New.
(ffi_prep_java_raw_closure_loc): New.
* src/closures.c: New file.
* src/dlmalloc.c [FFI_MMAP_EXEC_WRIT] (struct malloc_segment):
Replace sflags with exec_offset.
[FFI_MMAP_EXEC_WRIT] (mmap_exec_offset, add_segment_exec_offset,
sub_segment_exec_offset): New macros.
(get_segment_flags, set_segment_flags, check_segment_merge): New
macros.
(is_mmapped_segment, is_extern_segment): Use get_segment_flags.
(add_segment, sys_alloc, create_mspace, create_mspace_with_base,
destroy_mspace): Use new macros.
(sys_alloc): Silence warning.
* Makefile.am (libffi_la_SOURCES): Add src/closures.c.
* Makefile.in: Rebuilt.
* src/prep_cif [FFI_CLOSURES] (ffi_prep_closure): Implement in
terms of ffi_prep_closure_loc.
* src/raw_api.c (ffi_prep_raw_closure_loc): Renamed and adjusted
from...
(ffi_prep_raw_closure): ... this.  Re-implement in terms of the
renamed version.
* src/java_raw_api (ffi_prep_java_raw_closure_loc): Renamed and
adjusted from...
(ffi_prep_java_raw_closure): ... this.  Re-implement in terms of
the renamed version.
* src/alpha/ffi.c (ffi_prep_closure_loc): Renamed from
(ffi_prep_closure): ... this.
* src/pa/ffi.c: Likewise.
* src/cris/ffi.c: Likewise.  Adjust.
* src/frv/ffi.c: Likewise.
* src/ia64/ffi.c: Likewise.
* src/mips/ffi.c: Likewise.
* src/powerpc/ffi_darwin.c: Likewise.
* src/s390/ffi.c: Likewise.
* src/sh/ffi.c: Likewise.
* src/sh64/ffi.c: Likewise.
* src/sparc/ffi.c: Likewise.
* src/x86/ffi64.c: Likewise.
* src/x86/ffi.c: Likewise.
(FFI_INIT_TRAMPOLINE): Adjust.
(ffi_prep_raw_closure_loc): Renamed and adjusted from...
(ffi_prep_raw_closure): ... this.
* src/powerpc/ffi.c (ffi_prep_closure_loc): Renamed from
(ffi_prep_closure): ... this.
(flush_icache): Adjust.
boehm-gc/ChangeLog:
* include/gc.h (GC_REGISTER_FINALIZER_UNREACHABLE): New.
(GC_register_finalizer_unreachable): Declare.
(GC_debug_register_finalizer_unreachable): Declare.
* finalize.c (GC_unreachable_finalize_mark_proc): New.
(GC_register_finalizer_unreachable): New.
(GC_finalize): Handle it.
* dbg_mlc.c (GC_debug_register_finalizer_unreachable): New.
(GC_debug_register_finalizer_no_order): Fix whitespace.
libjava/ChangeLog:
* include/jvm.h (_Jv_ClosureListFinalizer): New.
(_Jv_Linker::create_error_method): Adjust.
* boehm.cc (_Jv_ClosureListFinalizer): New.
* nogc.cc (_Jv_ClosureListFinalizer): New.
* java/lang/Class.h (class _Jv_ClosureList): New.
(class java::lang::Class): Declare it as friend.
* java/lang/natClass.cc (_Jv_ClosureList::releaseClosures): New.
(_Jv_ClosureList::registerClousure): New.
* include/execution.h (_Jv_ExecutionEngine): Add get_closure_list.
(_Jv_CompiledEngine::do_get_closure_list): New.
(_Jv_CompiledEngine::_Jv_CompiledEngine): Use it.
(_Jv_IndirectCompiledClass): Add closures.
(_Jv_IndirectCompiledEngine::get_aux_info): New.
(_Jv_IndirectCompiledEngine::do_allocate_field_initializers): Use
it.
(_Jv_IndirectCompiledEngine::do_get_closure_list): New.
(_Jv_IndirectCompiledEngine::_Jv_IndirectCompiledEngine): Use it.
(_Jv_InterpreterEngine::do_get_closure_list): Declare.
(_Jv_InterpreterEngine::_Jv_InterpreterEngine): Use it.
* interpret.cc (FFI_PREP_RAW_CLOSURE): Use _loc variants.
(node_closure): Add closure list.
(_Jv_InterpMethod::ncode): Add jclass argument.  Use
ffi_closure_alloc and the separate code pointer.  Register the
closure for finalization.
(_Jv_JNIMethod::ncode): Likewise.
(_Jv_InterpreterEngine::do_create_ncode): Pass klass to ncode.
(_Jv_InterpreterEngine::do_get_closure_list): New.
* include/java-interp.h (_Jv_InterpMethod::ncode): Adjust.
(_Jv_InterpClass): Add closures field.
(_Jv_JNIMethod::ncode): Adjust.
* defineclass.cc (_Jv_ClassReader::handleCodeAttribute): Adjust.
(_Jv_ClassReader::handleMethodsEnd): Likewise.
* link.cc (struct method_closure): Add closure list.
(_Jv_Linker::create_error_method): Add jclass argument.  Use
ffi_closure_alloc and the separate code pointer.  Register the
closure for finalization.
(_Jv_Linker::link_symbol_table): Remove outdated comment about
sharing of otable and atable.  Adjust.
* java/lang/reflect/natVMProxy.cc (ncode_closure): Add closure
list.
(ncode): Add jclass argument.  Use ffi_closure_alloc and the
separate code pointer.  Register the closure for finalization.
(java::lang::reflect::VMProxy::generateProxyClass): Adjust.
* testsuite/libjava.jar/TestClosureGC.java: New.
* testsuite/libjava.jar/TestClosureGC.out: New.
* testsuite/libjava.jar/TestClosureGC.xfail: New.
* testsuite/libjava.jar/TestClosureGC.jar: New.

From-SVN: r122652

libjava/java/lang/Class.h

@@ -105,6 +105,15 @@ class _Jv_InterpClass;
 class _Jv_InterpMethod;
 #endif
 
+class _Jv_ClosureList
+{
+  _Jv_ClosureList *next;
+  void *ptr;
+public:
+  void registerClosure (jclass klass, void *ptr);
+  static void releaseClosures (_Jv_ClosureList **closures);
+};
+
 struct _Jv_Constants
 {
   jint size;
@@ -632,6 +641,7 @@ private:
   friend class ::_Jv_CompiledEngine;
   friend class ::_Jv_IndirectCompiledEngine;
   friend class ::_Jv_InterpreterEngine;
+  friend class ::_Jv_ClosureList;
 
   friend void ::_Jv_sharedlib_register_hook (jclass klass);
 

libjava/java/lang/natClass.cc

@@ -670,6 +670,28 @@ java::lang::Class::finalize (void)
   engine->unregister(this);
 }
 
+void
+_Jv_ClosureList::releaseClosures (_Jv_ClosureList **closures)
+{
+  if (!closures)
+    return;
+
+  while (_Jv_ClosureList *current = *closures)
+    {
+      *closures = current->next;
+      ffi_closure_free (current->ptr);
+    }
+}
+
+void
+_Jv_ClosureList::registerClosure (jclass klass, void *ptr)
+{
+  _Jv_ClosureList **closures = klass->engine->get_closure_list (klass);
+  this->ptr = ptr;
+  this->next = *closures;
+  *closures = this;
+}
+
 // This implements the initialization process for a class.  From Spec
 // section 12.4.2.
 void

libjava/java/lang/reflect/natVMProxy.cc

@@ -1,6 +1,6 @@
 // natVMProxy.cc -- Implementation of VMProxy methods.
 
-/* Copyright (C) 2006
+/* Copyright (C) 2006, 2007
    Free Software Foundation
 
    This file is part of libgcj.
@@ -66,7 +66,7 @@ using namespace java::lang::reflect;
 using namespace java::lang;
 
 typedef void (*closure_fun) (ffi_cif*, void*, void**, void*);
-static void *ncode (_Jv_Method *self, closure_fun fun);
+static void *ncode (jclass klass, _Jv_Method *self, closure_fun fun);
 static void run_proxy (ffi_cif*, void*, void**, void*);
 
 typedef jobject invoke_t (jobject, Proxy *, Method *, JArray< jobject > *);
@@ -165,7 +165,7 @@ java::lang::reflect::VMProxy::generateProxyClass
       // the interfaces of which it is a proxy will also be reachable,
       // so this is safe.
       method = imethod;
-      method.ncode = ncode (&method, run_proxy);
+      method.ncode = ncode (klass, &method, run_proxy);
       method.accflags &= ~Modifier::ABSTRACT;
     }
 
@@ -289,6 +289,7 @@ unbox (jobject o, jclass klass, void *rvalue, FFI_TYPE type)
 
 typedef struct {
   ffi_closure  closure;
+  _Jv_ClosureList list;
   ffi_cif   cif;
   _Jv_Method *self;
   ffi_type *arg_types[0];
@@ -366,16 +367,19 @@ run_proxy (ffi_cif *cif,
 // the address of its closure.
 
 static void *
-ncode (_Jv_Method *self, closure_fun fun)
+ncode (jclass klass, _Jv_Method *self, closure_fun fun)
 {
   using namespace java::lang::reflect;
 
   jboolean staticp = (self->accflags & Modifier::STATIC) != 0;
   int arg_count = _Jv_count_arguments (self->signature, staticp);
 
+  void *code;
   ncode_closure *closure =
-    (ncode_closure*)_Jv_AllocBytes (sizeof (ncode_closure)
-				    + arg_count * sizeof (ffi_type*));
+    (ncode_closure*)ffi_closure_alloc (sizeof (ncode_closure)
+				       + arg_count * sizeof (ffi_type*),
+				       &code);
+  closure->list.registerClosure (klass, closure);
 
   _Jv_init_cif (self->signature,
 		arg_count,
@@ -387,11 +391,12 @@ ncode (_Jv_Method *self, closure_fun fun)
 
   JvAssert ((self->accflags & Modifier::NATIVE) == 0);
 
-  ffi_prep_closure (&closure->closure,
-		    &closure->cif, 
-		    fun,
-		    (void*)closure);
+  ffi_prep_closure_loc (&closure->closure,
+			&closure->cif,
+			fun,
+			code,
+			code);
 
-  self->ncode = (void*)closure;
+  self->ncode = code;
   return self->ncode;
 }