src/native/vm/gnuclasspath/gnu_java_lang_management_VMMemoryMXBeanImpl.cpp

   1 /* src/native/vm/gnuclasspath/gnu_java_lang_management_VMMemoryMXBeanImpl.cpp
   2
   3    Copyright (C) 1996-2005, 2006, 2007, 2008
   4    CACAOVM - Verein zur Foerderung der freien virtuellen Maschine CACAO
   5
   6    This file is part of CACAO.
   7
   8    This program is free software; you can redistribute it and/or
   9    modify it under the terms of the GNU General Public License as
  10    published by the Free Software Foundation; either version 2, or (at
  11    your option) any later version.
  12
  13    This program is distributed in the hope that it will be useful, but
  14    WITHOUT ANY WARRANTY; without even the implied warranty of
  15    MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
  16    General Public License for more details.
  17
  18    You should have received a copy of the GNU General Public License
  19    along with this program; if not, write to the Free Software
  20    Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA
  21    02110-1301, USA.
  22
  23 */
  24
  25
  26 #include "config.h"
  27
  28 #include <stdint.h>
  29
  30 #include "mm/gc.hpp"
  31
  32 #include "native/jni.h"
  33 #include "native/native.h"
  34
  35 #include "native/include/java_lang_management_MemoryUsage.h"
  36
  37 // FIXME
  38 extern "C" {
  39 #include "native/include/gnu_java_lang_management_VMMemoryMXBeanImpl.h"
  40 }
  41
  42 #include "vm/builtin.h"
  43 #include "vm/global.h"
  44 #include "vm/vm.hpp"
  45
  46 #include "vmcore/class.h"
  47 #include "vmcore/loader.h"               /* XXX only for load_class_bootstrap */
  48 #include "vmcore/options.h"
  49
  50
  51 // Native functions are exported as C functions.
  52 extern "C" {
  53
  54 /*
  55  * Class:     gnu/java/lang/management/VMMemoryMXBeanImpl
  56  * Method:    getHeapMemoryUsage
  57  * Signature: ()Ljava/lang/management/MemoryUsage;
  58  */
  59 JNIEXPORT java_lang_management_MemoryUsage* JNICALL Java_gnu_java_lang_management_VMMemoryMXBeanImpl_getHeapMemoryUsage(JNIEnv *env, jclass clazz)
  60 {
  61         classinfo                        *class_java_lang_management_MemoryUsage;
  62         java_handle_t                    *o;
  63         java_lang_management_MemoryUsage *mu;
  64         methodinfo                       *m;
  65         int64_t                           init;
  66         int64_t                           used;
  67         int64_t                           commited;
  68         int64_t                           maximum;
  69
  70         /* get the class */
  71         /* XXX optimize me! sometime... */
  72
  73         if (!(class_java_lang_management_MemoryUsage = load_class_bootstrap(utf_new_char("java/lang/management/MemoryUsage"))))
  74                 return false;
  75
  76         /* create the object */
  77
  78         o = builtin_new(class_java_lang_management_MemoryUsage);
  79
  80         if (o == NULL)
  81                 return NULL;
  82
  83         /* cast the object to a MemoryUsage object (for debugability) */
  84
  85         mu = (java_lang_management_MemoryUsage *) o;
  86
  87         /* find initializer */
  88
  89         m = class_findmethod(class_java_lang_management_MemoryUsage,
  90                                                  utf_init, utf_new_char("(JJJJ)V"));
  91
  92         /* initializer not found */
  93
  94         if (m == NULL)
  95                 return NULL;
  96
  97         /* get values from the VM */
  98         /* XXX if we ever support more than one VM, change this */
  99
 100         init     = opt_heapstartsize;
 101         used     = gc_get_total_bytes();
 102         commited = gc_get_heap_size();
 103         maximum  = gc_get_max_heap_size();
 104
 105         /* call initializer */
 106
 107         (void) vm_call_method(m, o, init, used, commited, maximum);
 108
 109         return mu;
 110 }
 111
 112
 113 /*
 114  * Class:     gnu/java/lang/management/VMMemoryMXBeanImpl
 115  * Method:    getNonHeapMemoryUsage
 116  * Signature: ()Ljava/lang/management/MemoryUsage;
 117  */
 118 JNIEXPORT java_lang_management_MemoryUsage* JNICALL Java_gnu_java_lang_management_VMMemoryMXBeanImpl_getNonHeapMemoryUsage(JNIEnv *env, jclass clazz)
 119 {
 120         log_println("Java_gnu_java_lang_management_VMMemoryMXBeanImpl_getNonHeapMemoryUsage: IMPLEMENT ME!");
 121
 122         return NULL;
 123 }
 124
 125
 126 /*
 127  * Class:     gnu/java/lang/management/VMMemoryMXBeanImpl
 128  * Method:    getObjectPendingFinalizationCount
 129  * Signature: ()I
 130  */
 131 JNIEXPORT int32_t JNICALL Java_gnu_java_lang_management_VMMemoryMXBeanImpl_getObjectPendingFinalizationCount(JNIEnv *env, jclass clazz)
 132 {
 133         log_println("Java_gnu_java_lang_management_VMMemoryMXBeanImpl_getObjectPendingFinalizationCount: IMPLEMENT ME!");
 134
 135         return 0;
 136 }
 137
 138
 139 /*
 140  * Class:     gnu/java/lang/management/VMMemoryMXBeanImpl
 141  * Method:    isVerbose
 142  * Signature: ()Z
 143  */
 144 JNIEXPORT int32_t JNICALL Java_gnu_java_lang_management_VMMemoryMXBeanImpl_isVerbose(JNIEnv *env, jclass clazz)
 145 {
 146 /*      return _Jv_jvm->Java_gnu_java_lang_management_VMMemoryMXBeanImpl_verbose; */
 147 #warning Move to C++
 148         log_println("Java_gnu_java_lang_management_VMMemoryMXBeanImpl_isVerbose: MOVE TO C++!");
 149         return 0;
 150 }
 151
 152
 153 /*
 154  * Class:     gnu/java/lang/management/VMMemoryMXBeanImpl
 155  * Method:    setVerbose
 156  * Signature: (Z)V
 157  */
 158 JNIEXPORT void JNICALL Java_gnu_java_lang_management_VMMemoryMXBeanImpl_setVerbose(JNIEnv *env, jclass clazz, int32_t verbose)
 159 {
 160 /*      _Jv_jvm->Java_gnu_java_lang_management_VMMemoryMXBeanImpl_verbose = verbose; */
 161 #warning Move to C++
 162         log_println("Java_gnu_java_lang_management_VMMemoryMXBeanImpl_setVerbose: MOVE TO C++!");
 163 }
 164
 165 } // extern "C"
 166
 167
 168 /* native methods implemented by this file ************************************/
 169
 170 static JNINativeMethod methods[] = {
 171         { (char*) "getHeapMemoryUsage",                (char*) "()Ljava/lang/management/MemoryUsage;", (void*) (uintptr_t) &Java_gnu_java_lang_management_VMMemoryMXBeanImpl_getHeapMemoryUsage                },
 172         { (char*) "getNonHeapMemoryUsage",             (char*) "()Ljava/lang/management/MemoryUsage;", (void*) (uintptr_t) &Java_gnu_java_lang_management_VMMemoryMXBeanImpl_getNonHeapMemoryUsage             },
 173         { (char*) "getObjectPendingFinalizationCount", (char*) "()I",                                  (void*) (uintptr_t) &Java_gnu_java_lang_management_VMMemoryMXBeanImpl_getObjectPendingFinalizationCount },
 174         { (char*) "isVerbose",                         (char*) "()Z",                                  (void*) (uintptr_t) &Java_gnu_java_lang_management_VMMemoryMXBeanImpl_isVerbose                         },
 175         { (char*) "setVerbose",                        (char*) "(Z)V",                                 (void*) (uintptr_t) &Java_gnu_java_lang_management_VMMemoryMXBeanImpl_setVerbose                        },
 176 };
 177
 178
 179 /* _Jv_gnu_java_lang_management_VMMemoryMXBeanImpl_init ************************
 180
 181    Register native functions.
 182
 183 *******************************************************************************/
 184
 185 // FIXME
 186 extern "C" {
 187 void _Jv_gnu_java_lang_management_VMMemoryMXBeanImpl_init(void)
 188 {
 189         utf *u;
 190
 191         u = utf_new_char("gnu/java/lang/management/VMMemoryMXBeanImpl");
 192
 193         native_method_register(u, methods, NATIVE_METHODS_COUNT);
 194 }
 195 }
 196
 197
 198 /*
 199  * These are local overrides for various environment variables in Emacs.
 200  * Please do not remove this and leave it at the end of the file, where
 201  * Emacs will automagically detect them.
 202  * ---------------------------------------------------------------------
 203  * Local variables:
 204  * mode: c++
 205  * indent-tabs-mode: t
 206  * c-basic-offset: 4
 207  * tab-width: 4
 208  * End:
 209  * vim:noexpandtab:sw=4:ts=4:
 210  */