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 #if defined(ENABLE_JNI_HEADERS)
  36 # include "native/vm/include/gnu_java_lang_management_VMMemoryMXBeanImpl.h"
  37 #endif
  38
  39 #include "vm/builtin.h"
  40 #include "vm/class.h"
  41 #include "vm/global.h"
  42 #include "vm/loader.h"               /* XXX only for load_class_bootstrap */
  43 #include "vm/options.h"
  44 #include "vm/vm.hpp"
  45
  46
  47 // Native functions are exported as C functions.
  48 extern "C" {
  49
  50 /*
  51  * Class:     gnu/java/lang/management/VMMemoryMXBeanImpl
  52  * Method:    getHeapMemoryUsage
  53  * Signature: ()Ljava/lang/management/MemoryUsage;
  54  */
  55 JNIEXPORT jobject JNICALL Java_gnu_java_lang_management_VMMemoryMXBeanImpl_getHeapMemoryUsage(JNIEnv *env, jclass clazz)
  56 {
  57         classinfo     *class_java_lang_management_MemoryUsage;
  58         java_handle_t *o;
  59         methodinfo    *m;
  60         int64_t        init;
  61         int64_t        used;
  62         int64_t        commited;
  63         int64_t        maximum;
  64
  65         /* get the class */
  66         /* XXX optimize me! sometime... */
  67
  68         if (!(class_java_lang_management_MemoryUsage = load_class_bootstrap(utf_new_char("java/lang/management/MemoryUsage"))))
  69                 return false;
  70
  71         /* create the object */
  72
  73         o = builtin_new(class_java_lang_management_MemoryUsage);
  74
  75         if (o == NULL)
  76                 return NULL;
  77
  78         /* find initializer */
  79
  80         m = class_findmethod(class_java_lang_management_MemoryUsage,
  81                                                  utf_init, utf_new_char("(JJJJ)V"));
  82
  83         /* initializer not found */
  84
  85         if (m == NULL)
  86                 return NULL;
  87
  88         /* get values from the VM */
  89         /* XXX if we ever support more than one VM, change this */
  90
  91         init     = opt_heapstartsize;
  92         used     = gc_get_total_bytes();
  93         commited = gc_get_heap_size();
  94         maximum  = gc_get_max_heap_size();
  95
  96         /* call initializer */
  97
  98         (void) vm_call_method(m, o, init, used, commited, maximum);
  99
 100         return (jobject) o;
 101 }
 102
 103
 104 /*
 105  * Class:     gnu/java/lang/management/VMMemoryMXBeanImpl
 106  * Method:    getNonHeapMemoryUsage
 107  * Signature: ()Ljava/lang/management/MemoryUsage;
 108  */
 109 JNIEXPORT jobject JNICALL Java_gnu_java_lang_management_VMMemoryMXBeanImpl_getNonHeapMemoryUsage(JNIEnv *env, jclass clazz)
 110 {
 111         log_println("Java_gnu_java_lang_management_VMMemoryMXBeanImpl_getNonHeapMemoryUsage: IMPLEMENT ME!");
 112
 113         return NULL;
 114 }
 115
 116
 117 /*
 118  * Class:     gnu/java/lang/management/VMMemoryMXBeanImpl
 119  * Method:    getObjectPendingFinalizationCount
 120  * Signature: ()I
 121  */
 122 JNIEXPORT jint JNICALL Java_gnu_java_lang_management_VMMemoryMXBeanImpl_getObjectPendingFinalizationCount(JNIEnv *env, jclass clazz)
 123 {
 124         log_println("Java_gnu_java_lang_management_VMMemoryMXBeanImpl_getObjectPendingFinalizationCount: IMPLEMENT ME!");
 125
 126         return 0;
 127 }
 128
 129
 130 /*
 131  * Class:     gnu/java/lang/management/VMMemoryMXBeanImpl
 132  * Method:    isVerbose
 133  * Signature: ()Z
 134  */
 135 JNIEXPORT jboolean JNICALL Java_gnu_java_lang_management_VMMemoryMXBeanImpl_isVerbose(JNIEnv *env, jclass clazz)
 136 {
 137 /*      return _Jv_jvm->Java_gnu_java_lang_management_VMMemoryMXBeanImpl_verbose; */
 138 #warning Move to C++
 139         log_println("Java_gnu_java_lang_management_VMMemoryMXBeanImpl_isVerbose: MOVE TO C++!");
 140         return 0;
 141 }
 142
 143
 144 /*
 145  * Class:     gnu/java/lang/management/VMMemoryMXBeanImpl
 146  * Method:    setVerbose
 147  * Signature: (Z)V
 148  */
 149 JNIEXPORT void JNICALL Java_gnu_java_lang_management_VMMemoryMXBeanImpl_setVerbose(JNIEnv *env, jclass clazz, jboolean verbose)
 150 {
 151 /*      _Jv_jvm->Java_gnu_java_lang_management_VMMemoryMXBeanImpl_verbose = verbose; */
 152 #warning Move to C++
 153         log_println("Java_gnu_java_lang_management_VMMemoryMXBeanImpl_setVerbose: MOVE TO C++!");
 154 }
 155
 156 } // extern "C"
 157
 158
 159 /* native methods implemented by this file ************************************/
 160
 161 static JNINativeMethod methods[] = {
 162         { (char*) "getHeapMemoryUsage",                (char*) "()Ljava/lang/management/MemoryUsage;", (void*) (uintptr_t) &Java_gnu_java_lang_management_VMMemoryMXBeanImpl_getHeapMemoryUsage                },
 163         { (char*) "getNonHeapMemoryUsage",             (char*) "()Ljava/lang/management/MemoryUsage;", (void*) (uintptr_t) &Java_gnu_java_lang_management_VMMemoryMXBeanImpl_getNonHeapMemoryUsage             },
 164         { (char*) "getObjectPendingFinalizationCount", (char*) "()I",                                  (void*) (uintptr_t) &Java_gnu_java_lang_management_VMMemoryMXBeanImpl_getObjectPendingFinalizationCount },
 165         { (char*) "isVerbose",                         (char*) "()Z",                                  (void*) (uintptr_t) &Java_gnu_java_lang_management_VMMemoryMXBeanImpl_isVerbose                         },
 166         { (char*) "setVerbose",                        (char*) "(Z)V",                                 (void*) (uintptr_t) &Java_gnu_java_lang_management_VMMemoryMXBeanImpl_setVerbose                        },
 167 };
 168
 169
 170 /* _Jv_gnu_java_lang_management_VMMemoryMXBeanImpl_init ************************
 171
 172    Register native functions.
 173
 174 *******************************************************************************/
 175
 176 // FIXME
 177 extern "C" {
 178 void _Jv_gnu_java_lang_management_VMMemoryMXBeanImpl_init(void)
 179 {
 180         utf *u;
 181
 182         u = utf_new_char("gnu/java/lang/management/VMMemoryMXBeanImpl");
 183
 184         native_method_register(u, methods, NATIVE_METHODS_COUNT);
 185 }
 186 }
 187
 188
 189 /*
 190  * These are local overrides for various environment variables in Emacs.
 191  * Please do not remove this and leave it at the end of the file, where
 192  * Emacs will automagically detect them.
 193  * ---------------------------------------------------------------------
 194  * Local variables:
 195  * mode: c++
 196  * indent-tabs-mode: t
 197  * c-basic-offset: 4
 198  * tab-width: 4
 199  * End:
 200  * vim:noexpandtab:sw=4:ts=4:
 201  */