/* src/vm/classcache.h - loaded class cache and loading constraints
- 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 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: Edwin Steiner
Changes:
- $Id: classcache.h 3680 2005-11-16 12:12:29Z twisti $
+ $Id: classcache.h 4945 2006-05-23 19:52:47Z motse $
*/
#ifndef _CLASSCACHE_H
#define _CLASSCACHE_H
+#include "config.h"
+#include "vm/types.h"
+
#include <stdio.h> /* for FILE */
+#include "vm/hashtable.h"
#include "vm/references.h"
-#include "vm/tables.h"
/* forward declarations *******************************************************/
/* global variables ***********************************************************/
-extern hashtable classcache_hash;
+extern hashtable hashtable_classcache;
-/* structs ********************************************************************/
+#if defined(ENABLE_JVMTI)
+#if defined(ENABLE_THREADS)
+# define CLASSCACHE_LOCK() builtin_monitorenter(lock_hashtable_classcache)
+# define CLASSCACHE_UNLOCK() builtin_monitorexit(lock_hashtable_classcache)
+#else
+# define CLASSCACHE_LOCK()
+# define CLASSCACHE_UNLOCK()
+#endif
+extern java_objectheader *lock_hashtable_classcache;
+#endif
+
+/* structs ********************************************************************/
/*----------------------------------------------------------------------------*/
/* The Loaded Class Cache */
classcache_loader_entry *next; /* next loader entry in the list */
};
+
/* function prototypes ********************************************************/
/* initialize the loaded class cache */
bool classcache_init(void);
-
-/* classcache_free *************************************************************
-
- Free the memory used by the class cache
-
- NOTE:
- The class cache may not be used any more after this call, except
- when it is reinitialized with classcache_init.
-
-*******************************************************************************/
-
-void classcache_free();
-
-/* classcache_lookup ***********************************************************
-
- Lookup a possibly loaded class
-
- IN:
- initloader.......initiating loader for resolving the class name
- classname........class name to look up
-
- RETURN VALUE:
- The return value is a pointer to the cached class object,
- or NULL, if the class is not in the cache.
-
-*******************************************************************************/
+void classcache_free(void);
classinfo * classcache_lookup(classloader *initloader,utf *classname);
-
-/* classcache_lookup_defined ***************************************************
-
- Lookup a class with the given name and defining loader
-
- IN:
- defloader........defining loader
- classname........class name
-
- RETURN VALUE:
- The return value is a pointer to the cached class object,
- or NULL, if the class is not in the cache.
-
-*******************************************************************************/
-
classinfo * classcache_lookup_defined(classloader *defloader,utf *classname);
-
-/* classcache_store_unique *****************************************************
-
- Store a loaded class as loaded by the bootstrap loader. This is a wrapper
- aroung classcache_store that throws an exception if a class with the same
- name has already been loaded by the bootstrap loader.
-
- This function is used to register a few special classes during startup.
- It should not be used otherwise.
-
- IN:
- cls..............class object to cache
-
- RETURN VALUE:
- true.............everything ok, the class was stored.
- false............an exception has been thrown.
-
- Note: synchronized with global tablelock
-
-*******************************************************************************/
+classinfo * classcache_lookup_defined_or_initiated(classloader *loader,utf *classname);
bool classcache_store_unique(classinfo *cls);
-
-/* classcache_store ************************************************************
-
- Store a loaded class. If a class of the same name has already been stored
- with the same initiating loader, then the given class CLS is freed (if
- possible) and the previously stored class is returned.
-
- IN:
- initloader.......initiating loader used to load the class
- (may be NULL indicating the bootstrap loader)
- cls..............class object to cache
- mayfree..........true if CLS may be freed in case another class is
- returned
-
- RETURN VALUE:
- cls..............everything ok, the class was stored in the cache,
- other classinfo..another class with the same (initloader,name) has been
- stored earlier. CLS has been freed and the earlier
- stored class is returned.
- NULL.............an exception has been thrown.
-
- Note: synchronized with global tablelock
-
-*******************************************************************************/
-
classinfo * classcache_store(classloader *initloader,classinfo *cls,bool mayfree);
-
-/* classcache_store_defined ****************************************************
-
- Store a loaded class after it has been defined. If the class has already
- been defined by the same defining loader in another thread, free the given
- class and returned the one which has been defined earlier.
-
- IN:
- cls..............class object to store. classloader must be set
- (classloader may be NULL, for bootloader)
-
- RETURN VALUE:
- cls..............everything ok, the class was stored the cache,
- other classinfo..the class had already been defined, CLS was freed, the
- class which was defined earlier is returned,
- NULL.............an exception has been thrown.
-
-*******************************************************************************/
-
classinfo * classcache_store_defined(classinfo *cls);
-/* classcache_add_constraint ***************************************************
-
- Add a loading constraint
-
- IN:
- a................first initiating loader
- b................second initiating loader
- classname........class name
-
- RETURN VALUE:
- true.............everything ok, the constraint has been added,
- false............an exception has been thrown.
-
-*******************************************************************************/
-
+#if defined(ENABLE_VERIFIER)
bool classcache_add_constraint(classloader *a,classloader *b,utf *classname);
+bool classcache_add_constraints_for_params(classloader *a,classloader *b,
+ methodinfo *m);
+#endif
-/* classcache_debug_dump *******************************************************
-
- Print the contents of the loaded class cache to a stream
-
- IN:
- file.............output stream
-
-*******************************************************************************/
-
-void classcache_debug_dump(FILE *file);
+#ifndef NDEBUG
+void classcache_debug_dump(FILE *file,utf *only);
+#endif
#endif /* _CLASSCACHE_H */
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