/* src/native/vm/gnu/gnu_java_lang_management_VMMemoryMXBeanImpl.c

   Copyright (C) 1996-2005, 2006, 2007 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.

   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.

   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.

   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., 51 Franklin Street, Fifth Floor, Boston, MA
   02110-1301, USA.

   $Id: VMFrame.c 4996 2006-05-31 13:53:16Z motse $

*/


#include "config.h"
#include "vm/types.h"

#include "mm/gc-common.h"

#include "native/jni.h"
#include "native/native.h"

#include "native/include/java_lang_management_MemoryUsage.h"

#include "native/include/gnu_java_lang_management_VMMemoryMXBeanImpl.h"

#include "vm/builtin.h"
#include "vm/global.h"
#include "vm/vm.h"

#include "vmcore/class.h"
#include "vmcore/loader.h"               /* XXX only for load_class_bootstrap */
#include "vmcore/options.h"


/* native methods implemented by this file ************************************/

static JNINativeMethod methods[] = {
	{ "getHeapMemoryUsage",                "()Ljava/lang/management/MemoryUsage;", (void *) (ptrint) &Java_gnu_java_lang_management_VMMemoryMXBeanImpl_getHeapMemoryUsage                },
	{ "getNonHeapMemoryUsage",             "()Ljava/lang/management/MemoryUsage;", (void *) (ptrint) &Java_gnu_java_lang_management_VMMemoryMXBeanImpl_getNonHeapMemoryUsage             },
	{ "getObjectPendingFinalizationCount", "()I",                                  (void *) (ptrint) &Java_gnu_java_lang_management_VMMemoryMXBeanImpl_getObjectPendingFinalizationCount },
	{ "isVerbose",                         "()Z",                                  (void *) (ptrint) &Java_gnu_java_lang_management_VMMemoryMXBeanImpl_isVerbose                         },
	{ "setVerbose",                        "(Z)V",                                 (void *) (ptrint) &Java_gnu_java_lang_management_VMMemoryMXBeanImpl_setVerbose                        },
};


/* _Jv_gnu_java_lang_management_VMMemoryMXBeanImpl_init ************************

   Register native functions.

*******************************************************************************/

void _Jv_gnu_java_lang_management_VMMemoryMXBeanImpl_init(void)
{
	utf *u;

	u = utf_new_char("gnu/java/lang/management/VMMemoryMXBeanImpl");

	native_method_register(u, methods, NATIVE_METHODS_COUNT);
}


/*
 * Class:     gnu/java/lang/management/VMMemoryMXBeanImpl
 * Method:    getHeapMemoryUsage
 * Signature: ()Ljava/lang/management/MemoryUsage;
 */
JNIEXPORT java_lang_management_MemoryUsage* JNICALL Java_gnu_java_lang_management_VMMemoryMXBeanImpl_getHeapMemoryUsage(JNIEnv *env, jclass clazz)
{
	classinfo                        *class_java_lang_management_MemoryUsage;
	java_objectheader                *o;
	java_lang_management_MemoryUsage *mu;
	methodinfo                       *m;
	s8                                init;
	s8                                used;
	s8                                commited;
	s8                                maximum;

	/* get the class */
	/* XXX optimize me! sometime... */

	if (!(class_java_lang_management_MemoryUsage = load_class_bootstrap(utf_new_char("java/lang/management/MemoryUsage"))))
		return false;

	/* create the object */

	o = builtin_new(class_java_lang_management_MemoryUsage);
	
	if (o == NULL)
		return NULL;

	/* cast the object to a MemoryUsage object (for debugability) */

	mu = (java_lang_management_MemoryUsage *) o;

	/* find initializer */

	m = class_findmethod(class_java_lang_management_MemoryUsage,
						 utf_init, utf_new_char("(JJJJ)V"));
	                      	                      
	/* initializer not found */

	if (m == NULL)
		return NULL;

	/* get values from the VM */
	/* XXX if we ever support more than one VM, change this */

	init     = opt_heapstartsize;
	used     = gc_get_total_bytes();
	commited = gc_get_heap_size();
	maximum  = gc_get_max_heap_size();

	/* call initializer */

	(void) vm_call_method(m, o, init, used, commited, maximum);

	return mu;
}


/*
 * Class:     gnu/java/lang/management/VMMemoryMXBeanImpl
 * Method:    getNonHeapMemoryUsage
 * Signature: ()Ljava/lang/management/MemoryUsage;
 */
JNIEXPORT java_lang_management_MemoryUsage* JNICALL Java_gnu_java_lang_management_VMMemoryMXBeanImpl_getNonHeapMemoryUsage(JNIEnv *env, jclass clazz)
{
	log_println("Java_gnu_java_lang_management_VMMemoryMXBeanImpl_getNonHeapMemoryUsage: IMPLEMENT ME!");

	return NULL;
}


/*
 * Class:     gnu/java/lang/management/VMMemoryMXBeanImpl
 * Method:    getObjectPendingFinalizationCount
 * Signature: ()I
 */
JNIEXPORT s4 JNICALL Java_gnu_java_lang_management_VMMemoryMXBeanImpl_getObjectPendingFinalizationCount(JNIEnv *env, jclass clazz)
{
	log_println("Java_gnu_java_lang_management_VMMemoryMXBeanImpl_getObjectPendingFinalizationCount: IMPLEMENT ME!");

	return 0;
}


/*
 * Class:     gnu/java/lang/management/VMMemoryMXBeanImpl
 * Method:    isVerbose
 * Signature: ()Z
 */
JNIEXPORT s4 JNICALL Java_gnu_java_lang_management_VMMemoryMXBeanImpl_isVerbose(JNIEnv *env, jclass clazz)
{
	return _Jv_jvm->Java_gnu_java_lang_management_VMMemoryMXBeanImpl_verbose;
}


/*
 * Class:     gnu/java/lang/management/VMMemoryMXBeanImpl
 * Method:    setVerbose
 * Signature: (Z)V
 */
JNIEXPORT void JNICALL Java_gnu_java_lang_management_VMMemoryMXBeanImpl_setVerbose(JNIEnv *env, jclass clazz, s4 verbose)
{
	_Jv_jvm->Java_gnu_java_lang_management_VMMemoryMXBeanImpl_verbose = verbose;
}


/*
 * 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
 * Emacs will automagically detect them.
 * ---------------------------------------------------------------------
 * Local variables:
 * mode: c
 * indent-tabs-mode: t
 * c-basic-offset: 4
 * tab-width: 4
 * End:
 * vim:noexpandtab:sw=4:ts=4:
 */