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/global.h"
  41 #include "vm/vm.hpp"
  42
  43 #include "vmcore/class.h"
  44 #include "vmcore/loader.h"               /* XXX only for load_class_bootstrap */
  45 #include "vmcore/options.h"
  46
  47
  48 // Native functions are exported as C functions.
  49 extern "C" {
  50
  51 /*
  52  * Class:     gnu/java/lang/management/VMMemoryMXBeanImpl
  53  * Method:    getHeapMemoryUsage
  54  * Signature: ()Ljava/lang/management/MemoryUsage;
  55  */
  56 JNIEXPORT jobject JNICALL Java_gnu_java_lang_management_VMMemoryMXBeanImpl_getHeapMemoryUsage(JNIEnv *env, jclass clazz)
  57 {
  58         classinfo     *class_java_lang_management_MemoryUsage;
  59         java_handle_t *o;
  60         methodinfo    *m;
  61         int64_t        init;
  62         int64_t        used;
  63         int64_t        commited;
  64         int64_t        maximum;
  65
  66         /* get the class */
  67         /* XXX optimize me! sometime... */
  68
  69         if (!(class_java_lang_management_MemoryUsage = load_class_bootstrap(utf_new_char("java/lang/management/MemoryUsage"))))
  70                 return false;
  71
  72         /* create the object */
  73
  74         o = builtin_new(class_java_lang_management_MemoryUsage);
  75
  76         if (o == NULL)
  77                 return NULL;
  78
  79         /* find initializer */
  80
  81         m = class_findmethod(class_java_lang_management_MemoryUsage,
  82                                                  utf_init, utf_new_char("(JJJJ)V"));
  83
  84         /* initializer not found */
  85
  86         if (m == NULL)
  87                 return NULL;
  88
  89         /* get values from the VM */
  90         /* XXX if we ever support more than one VM, change this */
  91
  92         init     = opt_heapstartsize;
  93         used     = gc_get_total_bytes();
  94         commited = gc_get_heap_size();
  95         maximum  = gc_get_max_heap_size();
  96
  97         /* call initializer */
  98
  99         (void) vm_call_method(m, o, init, used, commited, maximum);
 100
 101         return (jobject) o;
 102 }
 103
 104
 105 /*
 106  * Class:     gnu/java/lang/management/VMMemoryMXBeanImpl
 107  * Method:    getNonHeapMemoryUsage
 108  * Signature: ()Ljava/lang/management/MemoryUsage;
 109  */
 110 JNIEXPORT jobject JNICALL Java_gnu_java_lang_management_VMMemoryMXBeanImpl_getNonHeapMemoryUsage(JNIEnv *env, jclass clazz)
 111 {
 112         log_println("Java_gnu_java_lang_management_VMMemoryMXBeanImpl_getNonHeapMemoryUsage: IMPLEMENT ME!");
 113
 114         return NULL;
 115 }
 116
 117
 118 /*
 119  * Class:     gnu/java/lang/management/VMMemoryMXBeanImpl
 120  * Method:    getObjectPendingFinalizationCount
 121  * Signature: ()I
 122  */
 123 JNIEXPORT jint JNICALL Java_gnu_java_lang_management_VMMemoryMXBeanImpl_getObjectPendingFinalizationCount(JNIEnv *env, jclass clazz)
 124 {
 125         log_println("Java_gnu_java_lang_management_VMMemoryMXBeanImpl_getObjectPendingFinalizationCount: IMPLEMENT ME!");
 126
 127         return 0;
 128 }
 129
 130
 131 /*
 132  * Class:     gnu/java/lang/management/VMMemoryMXBeanImpl
 133  * Method:    isVerbose
 134  * Signature: ()Z
 135  */
 136 JNIEXPORT jboolean JNICALL Java_gnu_java_lang_management_VMMemoryMXBeanImpl_isVerbose(JNIEnv *env, jclass clazz)
 137 {
 138 /*      return _Jv_jvm->Java_gnu_java_lang_management_VMMemoryMXBeanImpl_verbose; */
 139 #warning Move to C++
 140         log_println("Java_gnu_java_lang_management_VMMemoryMXBeanImpl_isVerbose: MOVE TO C++!");
 141         return 0;
 142 }
 143
 144
 145 /*
 146  * Class:     gnu/java/lang/management/VMMemoryMXBeanImpl
 147  * Method:    setVerbose
 148  * Signature: (Z)V
 149  */
 150 JNIEXPORT void JNICALL Java_gnu_java_lang_management_VMMemoryMXBeanImpl_setVerbose(JNIEnv *env, jclass clazz, jboolean verbose)
 151 {
 152 /*      _Jv_jvm->Java_gnu_java_lang_management_VMMemoryMXBeanImpl_verbose = verbose; */
 153 #warning Move to C++
 154         log_println("Java_gnu_java_lang_management_VMMemoryMXBeanImpl_setVerbose: MOVE TO C++!");
 155 }
 156
 157 } // extern "C"
 158
 159
 160 /* native methods implemented by this file ************************************/
 161
 162 static JNINativeMethod methods[] = {
 163         { (char*) "getHeapMemoryUsage",                (char*) "()Ljava/lang/management/MemoryUsage;", (void*) (uintptr_t) &Java_gnu_java_lang_management_VMMemoryMXBeanImpl_getHeapMemoryUsage                },
 164         { (char*) "getNonHeapMemoryUsage",             (char*) "()Ljava/lang/management/MemoryUsage;", (void*) (uintptr_t) &Java_gnu_java_lang_management_VMMemoryMXBeanImpl_getNonHeapMemoryUsage             },
 165         { (char*) "getObjectPendingFinalizationCount", (char*) "()I",                                  (void*) (uintptr_t) &Java_gnu_java_lang_management_VMMemoryMXBeanImpl_getObjectPendingFinalizationCount },
 166         { (char*) "isVerbose",                         (char*) "()Z",                                  (void*) (uintptr_t) &Java_gnu_java_lang_management_VMMemoryMXBeanImpl_isVerbose                         },
 167         { (char*) "setVerbose",                        (char*) "(Z)V",                                 (void*) (uintptr_t) &Java_gnu_java_lang_management_VMMemoryMXBeanImpl_setVerbose                        },
 168 };
 169
 170
 171 /* _Jv_gnu_java_lang_management_VMMemoryMXBeanImpl_init ************************
 172
 173    Register native functions.
 174
 175 *******************************************************************************/
 176
 177 // FIXME
 178 extern "C" {
 179 void _Jv_gnu_java_lang_management_VMMemoryMXBeanImpl_init(void)
 180 {
 181         utf *u;
 182
 183         u = utf_new_char("gnu/java/lang/management/VMMemoryMXBeanImpl");
 184
 185         native_method_register(u, methods, NATIVE_METHODS_COUNT);
 186 }
 187 }
 188
 189
 190 /*
 191  * These are local overrides for various environment variables in Emacs.
 192  * Please do not remove this and leave it at the end of the file, where
 193  * Emacs will automagically detect them.
 194  * ---------------------------------------------------------------------
 195  * Local variables:
 196  * mode: c++
 197  * indent-tabs-mode: t
 198  * c-basic-offset: 4
 199  * tab-width: 4
 200  * End:
 201  * vim:noexpandtab:sw=4:ts=4:
 202  */