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 R. Grafl, A. Krall, C. Kruegel,
   4    C. Oates, R. Obermaisser, M. Platter, M. Probst, S. Ring,
   5    E. Steiner, C. Thalinger, D. Thuernbeck, P. Tomsich, C. Ullrich,
   6    J. Wenninger, Institut f. Computersprachen - TU Wien
   7
   8    This file is part of CACAO.
   9
  10    This program is free software; you can redistribute it and/or
  11    modify it under the terms of the GNU General Public License as
  12    published by the Free Software Foundation; either version 2, or (at
  13    your option) any later version.
  14
  15    This program is distributed in the hope that it will be useful, but
  16    WITHOUT ANY WARRANTY; without even the implied warranty of
  17    MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
  18    General Public License for more details.
  19
  20    You should have received a copy of the GNU General Public License
  21    along with this program; if not, write to the Free Software
  22    Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA
  23    02110-1301, USA.
  24
  25 */
  26
  27
  28 #include "config.h"
  29 #include "vm/types.h"
  30
  31 #include "mm/gc-common.h"
  32
  33 #include "native/jni.h"
  34 #include "native/native.h"
  35
  36 #include "native/include/java_lang_management_MemoryUsage.h"
  37
  38 #include "native/include/gnu_java_lang_management_VMMemoryMXBeanImpl.h"
  39
  40 #include "vm/builtin.h"
  41 #include "vm/global.h"
  42 #include "vm/vm.h"
  43
  44 #include "vmcore/class.h"
  45 #include "vmcore/loader.h"               /* XXX only for load_class_bootstrap */
  46 #include "vmcore/options.h"
  47
  48
  49 /* native methods implemented by this file ************************************/
  50
  51 static JNINativeMethod methods[] = {
  52         { "getHeapMemoryUsage",                "()Ljava/lang/management/MemoryUsage;", (void *) (ptrint) &Java_gnu_java_lang_management_VMMemoryMXBeanImpl_getHeapMemoryUsage                },
  53         { "getNonHeapMemoryUsage",             "()Ljava/lang/management/MemoryUsage;", (void *) (ptrint) &Java_gnu_java_lang_management_VMMemoryMXBeanImpl_getNonHeapMemoryUsage             },
  54         { "getObjectPendingFinalizationCount", "()I",                                  (void *) (ptrint) &Java_gnu_java_lang_management_VMMemoryMXBeanImpl_getObjectPendingFinalizationCount },
  55         { "isVerbose",                         "()Z",                                  (void *) (ptrint) &Java_gnu_java_lang_management_VMMemoryMXBeanImpl_isVerbose                         },
  56         { "setVerbose",                        "(Z)V",                                 (void *) (ptrint) &Java_gnu_java_lang_management_VMMemoryMXBeanImpl_setVerbose                        },
  57 };
  58
  59
  60 /* _Jv_gnu_java_lang_management_VMMemoryMXBeanImpl_init ************************
  61
  62    Register native functions.
  63
  64 *******************************************************************************/
  65
  66 void _Jv_gnu_java_lang_management_VMMemoryMXBeanImpl_init(void)
  67 {
  68         utf *u;
  69
  70         u = utf_new_char("gnu/java/lang/management/VMMemoryMXBeanImpl");
  71
  72         native_method_register(u, methods, NATIVE_METHODS_COUNT);
  73 }
  74
  75
  76 /*
  77  * Class:     gnu/java/lang/management/VMMemoryMXBeanImpl
  78  * Method:    getHeapMemoryUsage
  79  * Signature: ()Ljava/lang/management/MemoryUsage;
  80  */
  81 JNIEXPORT java_lang_management_MemoryUsage* JNICALL Java_gnu_java_lang_management_VMMemoryMXBeanImpl_getHeapMemoryUsage(JNIEnv *env, jclass clazz)
  82 {
  83         classinfo                        *class_java_lang_management_MemoryUsage;
  84         java_handle_t                    *o;
  85         java_lang_management_MemoryUsage *mu;
  86         methodinfo                       *m;
  87         s8                                init;
  88         s8                                used;
  89         s8                                commited;
  90         s8                                maximum;
  91
  92         /* get the class */
  93         /* XXX optimize me! sometime... */
  94
  95         if (!(class_java_lang_management_MemoryUsage = load_class_bootstrap(utf_new_char("java/lang/management/MemoryUsage"))))
  96                 return false;
  97
  98         /* create the object */
  99
 100         o = builtin_new(class_java_lang_management_MemoryUsage);
 101
 102         if (o == NULL)
 103                 return NULL;
 104
 105         /* cast the object to a MemoryUsage object (for debugability) */
 106
 107         mu = (java_lang_management_MemoryUsage *) o;
 108
 109         /* find initializer */
 110
 111         m = class_findmethod(class_java_lang_management_MemoryUsage,
 112                                                  utf_init, utf_new_char("(JJJJ)V"));
 113
 114         /* initializer not found */
 115
 116         if (m == NULL)
 117                 return NULL;
 118
 119         /* get values from the VM */
 120         /* XXX if we ever support more than one VM, change this */
 121
 122         init     = opt_heapstartsize;
 123         used     = gc_get_total_bytes();
 124         commited = gc_get_heap_size();
 125         maximum  = gc_get_max_heap_size();
 126
 127         /* call initializer */
 128
 129         (void) vm_call_method(m, o, init, used, commited, maximum);
 130
 131         return mu;
 132 }
 133
 134
 135 /*
 136  * Class:     gnu/java/lang/management/VMMemoryMXBeanImpl
 137  * Method:    getNonHeapMemoryUsage
 138  * Signature: ()Ljava/lang/management/MemoryUsage;
 139  */
 140 JNIEXPORT java_lang_management_MemoryUsage* JNICALL Java_gnu_java_lang_management_VMMemoryMXBeanImpl_getNonHeapMemoryUsage(JNIEnv *env, jclass clazz)
 141 {
 142         log_println("Java_gnu_java_lang_management_VMMemoryMXBeanImpl_getNonHeapMemoryUsage: IMPLEMENT ME!");
 143
 144         return NULL;
 145 }
 146
 147
 148 /*
 149  * Class:     gnu/java/lang/management/VMMemoryMXBeanImpl
 150  * Method:    getObjectPendingFinalizationCount
 151  * Signature: ()I
 152  */
 153 JNIEXPORT s4 JNICALL Java_gnu_java_lang_management_VMMemoryMXBeanImpl_getObjectPendingFinalizationCount(JNIEnv *env, jclass clazz)
 154 {
 155         log_println("Java_gnu_java_lang_management_VMMemoryMXBeanImpl_getObjectPendingFinalizationCount: IMPLEMENT ME!");
 156
 157         return 0;
 158 }
 159
 160
 161 /*
 162  * Class:     gnu/java/lang/management/VMMemoryMXBeanImpl
 163  * Method:    isVerbose
 164  * Signature: ()Z
 165  */
 166 JNIEXPORT s4 JNICALL Java_gnu_java_lang_management_VMMemoryMXBeanImpl_isVerbose(JNIEnv *env, jclass clazz)
 167 {
 168         return _Jv_jvm->Java_gnu_java_lang_management_VMMemoryMXBeanImpl_verbose;
 169 }
 170
 171
 172 /*
 173  * Class:     gnu/java/lang/management/VMMemoryMXBeanImpl
 174  * Method:    setVerbose
 175  * Signature: (Z)V
 176  */
 177 JNIEXPORT void JNICALL Java_gnu_java_lang_management_VMMemoryMXBeanImpl_setVerbose(JNIEnv *env, jclass clazz, s4 verbose)
 178 {
 179         _Jv_jvm->Java_gnu_java_lang_management_VMMemoryMXBeanImpl_verbose = verbose;
 180 }
 181
 182
 183 /*
 184  * These are local overrides for various environment variables in Emacs.
 185  * Please do not remove this and leave it at the end of the file, where
 186  * Emacs will automagically detect them.
 187  * ---------------------------------------------------------------------
 188  * Local variables:
 189  * mode: c
 190  * indent-tabs-mode: t
 191  * c-basic-offset: 4
 192  * tab-width: 4
 193  * End:
 194  * vim:noexpandtab:sw=4:ts=4:
 195  */