src/native/vm/gnu/gnu_java_lang_management_VMMemoryMXBeanImpl.c

   1 /* src/native/vm/gnu/gnu_java_lang_management_VMMemoryMXBeanImpl.c
   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-common.h"
  31
  32 #include "native/jni.h"
  33 #include "native/native.h"
  34
  35 #include "native/include/java_lang_management_MemoryUsage.h"
  36
  37 #include "native/include/gnu_java_lang_management_VMMemoryMXBeanImpl.h"
  38
  39 #include "vm/builtin.h"
  40 #include "vm/global.h"
  41 #include "vm/vm.h"
  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 methods implemented by this file ************************************/
  49
  50 static JNINativeMethod methods[] = {
  51         { "getHeapMemoryUsage",                "()Ljava/lang/management/MemoryUsage;", (void *) (uintptr_t) &Java_gnu_java_lang_management_VMMemoryMXBeanImpl_getHeapMemoryUsage                },
  52         { "getNonHeapMemoryUsage",             "()Ljava/lang/management/MemoryUsage;", (void *) (uintptr_t) &Java_gnu_java_lang_management_VMMemoryMXBeanImpl_getNonHeapMemoryUsage             },
  53         { "getObjectPendingFinalizationCount", "()I",                                  (void *) (uintptr_t) &Java_gnu_java_lang_management_VMMemoryMXBeanImpl_getObjectPendingFinalizationCount },
  54         { "isVerbose",                         "()Z",                                  (void *) (uintptr_t) &Java_gnu_java_lang_management_VMMemoryMXBeanImpl_isVerbose                         },
  55         { "setVerbose",                        "(Z)V",                                 (void *) (uintptr_t) &Java_gnu_java_lang_management_VMMemoryMXBeanImpl_setVerbose                        },
  56 };
  57
  58
  59 /* _Jv_gnu_java_lang_management_VMMemoryMXBeanImpl_init ************************
  60
  61    Register native functions.
  62
  63 *******************************************************************************/
  64
  65 void _Jv_gnu_java_lang_management_VMMemoryMXBeanImpl_init(void)
  66 {
  67         utf *u;
  68
  69         u = utf_new_char("gnu/java/lang/management/VMMemoryMXBeanImpl");
  70
  71         native_method_register(u, methods, NATIVE_METHODS_COUNT);
  72 }
  73
  74
  75 /*
  76  * Class:     gnu/java/lang/management/VMMemoryMXBeanImpl
  77  * Method:    getHeapMemoryUsage
  78  * Signature: ()Ljava/lang/management/MemoryUsage;
  79  */
  80 JNIEXPORT java_lang_management_MemoryUsage* JNICALL Java_gnu_java_lang_management_VMMemoryMXBeanImpl_getHeapMemoryUsage(JNIEnv *env, jclass clazz)
  81 {
  82         classinfo                        *class_java_lang_management_MemoryUsage;
  83         java_handle_t                    *o;
  84         java_lang_management_MemoryUsage *mu;
  85         methodinfo                       *m;
  86         int64_t                           init;
  87         int64_t                           used;
  88         int64_t                           commited;
  89         int64_t                           maximum;
  90
  91         /* get the class */
  92         /* XXX optimize me! sometime... */
  93
  94         if (!(class_java_lang_management_MemoryUsage = load_class_bootstrap(utf_new_char("java/lang/management/MemoryUsage"))))
  95                 return false;
  96
  97         /* create the object */
  98
  99         o = builtin_new(class_java_lang_management_MemoryUsage);
 100
 101         if (o == NULL)
 102                 return NULL;
 103
 104         /* cast the object to a MemoryUsage object (for debugability) */
 105
 106         mu = (java_lang_management_MemoryUsage *) o;
 107
 108         /* find initializer */
 109
 110         m = class_findmethod(class_java_lang_management_MemoryUsage,
 111                                                  utf_init, utf_new_char("(JJJJ)V"));
 112
 113         /* initializer not found */
 114
 115         if (m == NULL)
 116                 return NULL;
 117
 118         /* get values from the VM */
 119         /* XXX if we ever support more than one VM, change this */
 120
 121         init     = opt_heapstartsize;
 122         used     = gc_get_total_bytes();
 123         commited = gc_get_heap_size();
 124         maximum  = gc_get_max_heap_size();
 125
 126         /* call initializer */
 127
 128         (void) vm_call_method(m, o, init, used, commited, maximum);
 129
 130         return mu;
 131 }
 132
 133
 134 /*
 135  * Class:     gnu/java/lang/management/VMMemoryMXBeanImpl
 136  * Method:    getNonHeapMemoryUsage
 137  * Signature: ()Ljava/lang/management/MemoryUsage;
 138  */
 139 JNIEXPORT java_lang_management_MemoryUsage* JNICALL Java_gnu_java_lang_management_VMMemoryMXBeanImpl_getNonHeapMemoryUsage(JNIEnv *env, jclass clazz)
 140 {
 141         log_println("Java_gnu_java_lang_management_VMMemoryMXBeanImpl_getNonHeapMemoryUsage: IMPLEMENT ME!");
 142
 143         return NULL;
 144 }
 145
 146
 147 /*
 148  * Class:     gnu/java/lang/management/VMMemoryMXBeanImpl
 149  * Method:    getObjectPendingFinalizationCount
 150  * Signature: ()I
 151  */
 152 JNIEXPORT int32_t JNICALL Java_gnu_java_lang_management_VMMemoryMXBeanImpl_getObjectPendingFinalizationCount(JNIEnv *env, jclass clazz)
 153 {
 154         log_println("Java_gnu_java_lang_management_VMMemoryMXBeanImpl_getObjectPendingFinalizationCount: IMPLEMENT ME!");
 155
 156         return 0;
 157 }
 158
 159
 160 /*
 161  * Class:     gnu/java/lang/management/VMMemoryMXBeanImpl
 162  * Method:    isVerbose
 163  * Signature: ()Z
 164  */
 165 JNIEXPORT int32_t JNICALL Java_gnu_java_lang_management_VMMemoryMXBeanImpl_isVerbose(JNIEnv *env, jclass clazz)
 166 {
 167         return _Jv_jvm->Java_gnu_java_lang_management_VMMemoryMXBeanImpl_verbose;
 168 }
 169
 170
 171 /*
 172  * Class:     gnu/java/lang/management/VMMemoryMXBeanImpl
 173  * Method:    setVerbose
 174  * Signature: (Z)V
 175  */
 176 JNIEXPORT void JNICALL Java_gnu_java_lang_management_VMMemoryMXBeanImpl_setVerbose(JNIEnv *env, jclass clazz, int32_t verbose)
 177 {
 178         _Jv_jvm->Java_gnu_java_lang_management_VMMemoryMXBeanImpl_verbose = verbose;
 179 }
 180
 181
 182 /*
 183  * These are local overrides for various environment variables in Emacs.
 184  * Please do not remove this and leave it at the end of the file, where
 185  * Emacs will automagically detect them.
 186  * ---------------------------------------------------------------------
 187  * Local variables:
 188  * mode: c
 189  * indent-tabs-mode: t
 190  * c-basic-offset: 4
 191  * tab-width: 4
 192  * End:
 193  * vim:noexpandtab:sw=4:ts=4:
 194  */