Line data Source code
1 : /* src/native/vm/gnuclasspath/gnu_java_lang_management_VMMemoryMXBeanImpl.cpp
2 :
3 : Copyright (C) 1996-2013
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.hpp"
33 : #include "native/native.hpp"
34 :
35 : #include "toolbox/logging.hpp"
36 :
37 : #if defined(ENABLE_JNI_HEADERS)
38 : # include "native/vm/include/gnu_java_lang_management_VMMemoryMXBeanImpl.h"
39 : #endif
40 :
41 : #include "vm/class.hpp"
42 : #include "vm/global.hpp"
43 : #include "vm/javaobjects.hpp"
44 : #include "vm/options.hpp"
45 : #include "vm/vm.hpp"
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 0 : JNIEXPORT jobject JNICALL Java_gnu_java_lang_management_VMMemoryMXBeanImpl_getHeapMemoryUsage(JNIEnv *env, jclass clazz)
57 : {
58 : // Get values from the VM.
59 : // XXX If we ever support more than one VM, change this.
60 0 : int64_t init = opt_heapstartsize;
61 0 : int64_t used = gc_get_total_bytes();
62 0 : int64_t commited = gc_get_heap_size();
63 0 : int64_t maximum = gc_get_max_heap_size();
64 :
65 : // Construct a new java.lang.management.MemoryUsage object.
66 0 : java_lang_management_MemoryUsage jlmmu(init, used, commited, maximum);
67 :
68 0 : return jlmmu.get_handle();
69 : }
70 :
71 :
72 : /*
73 : * Class: gnu/java/lang/management/VMMemoryMXBeanImpl
74 : * Method: getNonHeapMemoryUsage
75 : * Signature: ()Ljava/lang/management/MemoryUsage;
76 : */
77 0 : JNIEXPORT jobject JNICALL Java_gnu_java_lang_management_VMMemoryMXBeanImpl_getNonHeapMemoryUsage(JNIEnv *env, jclass clazz)
78 : {
79 0 : log_println("Java_gnu_java_lang_management_VMMemoryMXBeanImpl_getNonHeapMemoryUsage: IMPLEMENT ME!");
80 :
81 0 : return NULL;
82 : }
83 :
84 :
85 : /*
86 : * Class: gnu/java/lang/management/VMMemoryMXBeanImpl
87 : * Method: getObjectPendingFinalizationCount
88 : * Signature: ()I
89 : */
90 0 : JNIEXPORT jint JNICALL Java_gnu_java_lang_management_VMMemoryMXBeanImpl_getObjectPendingFinalizationCount(JNIEnv *env, jclass clazz)
91 : {
92 0 : log_println("Java_gnu_java_lang_management_VMMemoryMXBeanImpl_getObjectPendingFinalizationCount: IMPLEMENT ME!");
93 :
94 0 : return 0;
95 : }
96 :
97 :
98 : /*
99 : * Class: gnu/java/lang/management/VMMemoryMXBeanImpl
100 : * Method: isVerbose
101 : * Signature: ()Z
102 : */
103 0 : JNIEXPORT jboolean JNICALL Java_gnu_java_lang_management_VMMemoryMXBeanImpl_isVerbose(JNIEnv *env, jclass clazz)
104 : {
105 0 : return opt_verbosegc;
106 : }
107 :
108 :
109 : /*
110 : * Class: gnu/java/lang/management/VMMemoryMXBeanImpl
111 : * Method: setVerbose
112 : * Signature: (Z)V
113 : */
114 0 : JNIEXPORT void JNICALL Java_gnu_java_lang_management_VMMemoryMXBeanImpl_setVerbose(JNIEnv *env, jclass clazz, jboolean verbose)
115 : {
116 0 : opt_verbosegc = verbose;
117 0 : }
118 :
119 : } // extern "C"
120 :
121 :
122 : /* native methods implemented by this file ************************************/
123 :
124 : static JNINativeMethod methods[] = {
125 : { (char*) "getHeapMemoryUsage", (char*) "()Ljava/lang/management/MemoryUsage;", (void*) (uintptr_t) &Java_gnu_java_lang_management_VMMemoryMXBeanImpl_getHeapMemoryUsage },
126 : { (char*) "getNonHeapMemoryUsage", (char*) "()Ljava/lang/management/MemoryUsage;", (void*) (uintptr_t) &Java_gnu_java_lang_management_VMMemoryMXBeanImpl_getNonHeapMemoryUsage },
127 : { (char*) "getObjectPendingFinalizationCount", (char*) "()I", (void*) (uintptr_t) &Java_gnu_java_lang_management_VMMemoryMXBeanImpl_getObjectPendingFinalizationCount },
128 : { (char*) "isVerbose", (char*) "()Z", (void*) (uintptr_t) &Java_gnu_java_lang_management_VMMemoryMXBeanImpl_isVerbose },
129 : { (char*) "setVerbose", (char*) "(Z)V", (void*) (uintptr_t) &Java_gnu_java_lang_management_VMMemoryMXBeanImpl_setVerbose },
130 : };
131 :
132 :
133 : /* _Jv_gnu_java_lang_management_VMMemoryMXBeanImpl_init ************************
134 :
135 : Register native functions.
136 :
137 : *******************************************************************************/
138 :
139 163 : void _Jv_gnu_java_lang_management_VMMemoryMXBeanImpl_init(void)
140 : {
141 163 : Utf8String u = Utf8String::from_utf8("gnu/java/lang/management/VMMemoryMXBeanImpl");
142 :
143 163 : NativeMethods& nm = VM::get_current()->get_nativemethods();
144 163 : nm.register_methods(u, methods, NATIVE_METHODS_COUNT);
145 163 : }
146 :
147 :
148 : /*
149 : * These are local overrides for various environment variables in Emacs.
150 : * Please do not remove this and leave it at the end of the file, where
151 : * Emacs will automagically detect them.
152 : * ---------------------------------------------------------------------
153 : * Local variables:
154 : * mode: c++
155 : * indent-tabs-mode: t
156 : * c-basic-offset: 4
157 : * tab-width: 4
158 : * End:
159 : * vim:noexpandtab:sw=4:ts=4:
160 : */
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