J. Duke | 319a3b9 | 2007-12-01 00:00:00 +0000 | [diff] [blame^] | 1 | /* |
| 2 | * Copyright 2003-2004 Sun Microsystems, Inc. All Rights Reserved. |
| 3 | * DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER. |
| 4 | * |
| 5 | * This code is free software; you can redistribute it and/or modify it |
| 6 | * under the terms of the GNU General Public License version 2 only, as |
| 7 | * published by the Free Software Foundation. Sun designates this |
| 8 | * particular file as subject to the "Classpath" exception as provided |
| 9 | * by Sun in the LICENSE file that accompanied this code. |
| 10 | * |
| 11 | * This code is distributed in the hope that it will be useful, but WITHOUT |
| 12 | * ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or |
| 13 | * FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License |
| 14 | * version 2 for more details (a copy is included in the LICENSE file that |
| 15 | * accompanied this code). |
| 16 | * |
| 17 | * You should have received a copy of the GNU General Public License version |
| 18 | * 2 along with this work; if not, write to the Free Software Foundation, |
| 19 | * Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA. |
| 20 | * |
| 21 | * Please contact Sun Microsystems, Inc., 4150 Network Circle, Santa Clara, |
| 22 | * CA 95054 USA or visit www.sun.com if you need additional information or |
| 23 | * have any questions. |
| 24 | */ |
| 25 | |
| 26 | #include <stdlib.h> |
| 27 | #include <stdio.h> |
| 28 | #include <jni.h> |
| 29 | #include "management.h" |
| 30 | #include "sun_management_GcInfoBuilder.h" |
| 31 | |
| 32 | JNIEXPORT jint JNICALL Java_sun_management_GcInfoBuilder_getNumGcExtAttributes |
| 33 | (JNIEnv *env, jobject dummy, jobject gc) { |
| 34 | jlong value; |
| 35 | |
| 36 | if (gc == NULL) { |
| 37 | JNU_ThrowNullPointerException(env, "Invalid GarbageCollectorMBean"); |
| 38 | return 0; |
| 39 | } |
| 40 | value = jmm_interface->GetLongAttribute(env, gc, |
| 41 | JMM_GC_EXT_ATTRIBUTE_INFO_SIZE); |
| 42 | return (jint) value; |
| 43 | } |
| 44 | |
| 45 | JNIEXPORT void JNICALL Java_sun_management_GcInfoBuilder_fillGcAttributeInfo |
| 46 | (JNIEnv *env, jobject dummy, jobject gc, |
| 47 | jint num_attributes, jobjectArray attributeNames, |
| 48 | jcharArray types, jobjectArray descriptions) { |
| 49 | |
| 50 | jmmExtAttributeInfo* ext_att_info; |
| 51 | jchar* nativeTypes; |
| 52 | jstring attName = NULL; |
| 53 | jstring desc = NULL; |
| 54 | jint ret = 0; |
| 55 | jint i; |
| 56 | |
| 57 | if (gc == NULL) { |
| 58 | JNU_ThrowNullPointerException(env, "Invalid GarbageCollectorMBean"); |
| 59 | return; |
| 60 | } |
| 61 | |
| 62 | if (num_attributes == 0) { |
| 63 | JNU_ThrowIllegalArgumentException(env, "Invalid num_attributes"); |
| 64 | return; |
| 65 | } |
| 66 | |
| 67 | ext_att_info = (jmmExtAttributeInfo*) malloc(num_attributes * |
| 68 | sizeof(jmmExtAttributeInfo)); |
| 69 | if (ext_att_info == NULL) { |
| 70 | JNU_ThrowOutOfMemoryError(env, 0); |
| 71 | return; |
| 72 | } |
| 73 | ret = jmm_interface->GetGCExtAttributeInfo(env, gc, |
| 74 | ext_att_info, num_attributes); |
| 75 | if (ret != num_attributes) { |
| 76 | JNU_ThrowInternalError(env, "Unexpected num_attributes"); |
| 77 | free(ext_att_info); |
| 78 | return; |
| 79 | } |
| 80 | |
| 81 | nativeTypes = (jchar*) malloc(num_attributes * sizeof(jchar)); |
| 82 | if (nativeTypes == NULL) { |
| 83 | free(ext_att_info); |
| 84 | JNU_ThrowOutOfMemoryError(env, 0); |
| 85 | return; |
| 86 | } |
| 87 | for (i = 0; i < num_attributes; i++) { |
| 88 | nativeTypes[i] = ext_att_info[i].type; |
| 89 | attName = (*env)->NewStringUTF(env, ext_att_info[i].name); |
| 90 | desc = (*env)->NewStringUTF(env, ext_att_info[i].description); |
| 91 | (*env)->SetObjectArrayElement(env, attributeNames, i, attName); |
| 92 | (*env)->SetObjectArrayElement(env, descriptions, i, desc); |
| 93 | } |
| 94 | (*env)->SetCharArrayRegion(env, types, 0, num_attributes, nativeTypes); |
| 95 | |
| 96 | if (ext_att_info != NULL) { |
| 97 | free(ext_att_info); |
| 98 | } |
| 99 | if (nativeTypes != NULL) { |
| 100 | free(nativeTypes); |
| 101 | } |
| 102 | } |
| 103 | |
| 104 | static void setLongValueAtObjectArray(JNIEnv *env, jobjectArray array, |
| 105 | jsize index, jlong value) { |
| 106 | static const char* class_name = "java/lang/Long"; |
| 107 | static const char* signature = "(J)V"; |
| 108 | jobject obj = JNU_NewObjectByName(env, class_name, signature, value); |
| 109 | |
| 110 | (*env)->SetObjectArrayElement(env, array, index, obj); |
| 111 | } |
| 112 | |
| 113 | static void setBooleanValueAtObjectArray(JNIEnv *env, jobjectArray array, |
| 114 | jsize index, jboolean value) { |
| 115 | static const char* class_name = "java/lang/Boolean"; |
| 116 | static const char* signature = "(Z)V"; |
| 117 | jobject obj = JNU_NewObjectByName(env, class_name, signature, value); |
| 118 | |
| 119 | (*env)->SetObjectArrayElement(env, array, index, obj); |
| 120 | } |
| 121 | |
| 122 | static void setByteValueAtObjectArray(JNIEnv *env, jobjectArray array, |
| 123 | jsize index, jbyte value) { |
| 124 | static const char* class_name = "java/lang/Byte"; |
| 125 | static const char* signature = "(B)V"; |
| 126 | jobject obj = JNU_NewObjectByName(env, class_name, signature, value); |
| 127 | |
| 128 | (*env)->SetObjectArrayElement(env, array, index, obj); |
| 129 | } |
| 130 | |
| 131 | static void setIntValueAtObjectArray(JNIEnv *env, jobjectArray array, |
| 132 | jsize index, jint value) { |
| 133 | static const char* class_name = "java/lang/Integer"; |
| 134 | static const char* signature = "(I)V"; |
| 135 | jobject obj = JNU_NewObjectByName(env, class_name, signature, value); |
| 136 | |
| 137 | (*env)->SetObjectArrayElement(env, array, index, obj); |
| 138 | } |
| 139 | |
| 140 | static void setShortValueAtObjectArray(JNIEnv *env, jobjectArray array, |
| 141 | jsize index, jshort value) { |
| 142 | static const char* class_name = "java/lang/Short"; |
| 143 | static const char* signature = "(S)V"; |
| 144 | jobject obj = JNU_NewObjectByName(env, class_name, signature, value); |
| 145 | |
| 146 | (*env)->SetObjectArrayElement(env, array, index, obj); |
| 147 | } |
| 148 | |
| 149 | static void setDoubleValueAtObjectArray(JNIEnv *env, jobjectArray array, |
| 150 | jsize index, jdouble value) { |
| 151 | static const char* class_name = "java/lang/Double"; |
| 152 | static const char* signature = "(D)V"; |
| 153 | jobject obj = JNU_NewObjectByName(env, class_name, signature, value); |
| 154 | |
| 155 | (*env)->SetObjectArrayElement(env, array, index, obj); |
| 156 | } |
| 157 | |
| 158 | static void setFloatValueAtObjectArray(JNIEnv *env, jobjectArray array, |
| 159 | jsize index, jfloat value) { |
| 160 | static const char* class_name = "java/lang/Float"; |
| 161 | static const char* signature = "(D)V"; |
| 162 | jobject obj = JNU_NewObjectByName(env, class_name, signature, value); |
| 163 | |
| 164 | (*env)->SetObjectArrayElement(env, array, index, obj); |
| 165 | } |
| 166 | |
| 167 | static void setCharValueAtObjectArray(JNIEnv *env, jobjectArray array, |
| 168 | jsize index, jchar value) { |
| 169 | static const char* class_name = "java/lang/Character"; |
| 170 | static const char* signature = "(C)V"; |
| 171 | jobject obj = JNU_NewObjectByName(env, class_name, signature, value); |
| 172 | |
| 173 | (*env)->SetObjectArrayElement(env, array, index, obj); |
| 174 | } |
| 175 | |
| 176 | JNIEXPORT jobject JNICALL Java_sun_management_GcInfoBuilder_getLastGcInfo0 |
| 177 | (JNIEnv *env, jobject builder, jobject gc, |
| 178 | jint ext_att_count, jobjectArray ext_att_values, jcharArray ext_att_types, |
| 179 | jobjectArray usageBeforeGC, jobjectArray usageAfterGC) { |
| 180 | |
| 181 | jmmGCStat gc_stat; |
| 182 | jchar* nativeTypes; |
| 183 | jsize i; |
| 184 | jvalue v; |
| 185 | |
| 186 | if (gc == NULL) { |
| 187 | JNU_ThrowNullPointerException(env, "Invalid GarbageCollectorMBean"); |
| 188 | return 0; |
| 189 | } |
| 190 | |
| 191 | gc_stat.usage_before_gc = usageBeforeGC; |
| 192 | gc_stat.usage_after_gc = usageAfterGC; |
| 193 | gc_stat.gc_ext_attribute_values_size = ext_att_count; |
| 194 | if (ext_att_count > 0) { |
| 195 | gc_stat.gc_ext_attribute_values = (jvalue*) malloc(ext_att_count * |
| 196 | sizeof(jvalue)); |
| 197 | if (gc_stat.gc_ext_attribute_values == NULL) { |
| 198 | JNU_ThrowOutOfMemoryError(env, 0); |
| 199 | return 0; |
| 200 | } |
| 201 | } else { |
| 202 | gc_stat.gc_ext_attribute_values = NULL; |
| 203 | } |
| 204 | |
| 205 | |
| 206 | jmm_interface->GetLastGCStat(env, gc, &gc_stat); |
| 207 | if (gc_stat.gc_index == 0) { |
| 208 | if (gc_stat.gc_ext_attribute_values != NULL) { |
| 209 | free(gc_stat.gc_ext_attribute_values); |
| 210 | } |
| 211 | return 0; |
| 212 | } |
| 213 | |
| 214 | // convert the ext_att_types to native types |
| 215 | nativeTypes = (jchar*) malloc(ext_att_count * sizeof(jchar)); |
| 216 | if (nativeTypes == NULL) { |
| 217 | if (gc_stat.gc_ext_attribute_values != NULL) { |
| 218 | free(gc_stat.gc_ext_attribute_values); |
| 219 | } |
| 220 | JNU_ThrowOutOfMemoryError(env, 0); |
| 221 | return 0; |
| 222 | } |
| 223 | (*env)->GetCharArrayRegion(env, ext_att_types, 0, ext_att_count, nativeTypes); |
| 224 | for (i = 0; i < ext_att_count; i++) { |
| 225 | v = gc_stat.gc_ext_attribute_values[i]; |
| 226 | switch (nativeTypes[i]) { |
| 227 | case 'Z': |
| 228 | setBooleanValueAtObjectArray(env, ext_att_values, i, v.z); |
| 229 | break; |
| 230 | case 'B': |
| 231 | setByteValueAtObjectArray(env, ext_att_values, i, v.b); |
| 232 | break; |
| 233 | case 'C': |
| 234 | setCharValueAtObjectArray(env, ext_att_values, i, v.c); |
| 235 | break; |
| 236 | case 'S': |
| 237 | setShortValueAtObjectArray(env, ext_att_values, i, v.s); |
| 238 | break; |
| 239 | case 'I': |
| 240 | setIntValueAtObjectArray(env, ext_att_values, i, v.i); |
| 241 | break; |
| 242 | case 'J': |
| 243 | setLongValueAtObjectArray(env, ext_att_values, i, v.j); |
| 244 | break; |
| 245 | case 'F': |
| 246 | setFloatValueAtObjectArray(env, ext_att_values, i, v.f); |
| 247 | break; |
| 248 | case 'D': |
| 249 | setDoubleValueAtObjectArray(env, ext_att_values, i, v.d); |
| 250 | break; |
| 251 | default: |
| 252 | if (gc_stat.gc_ext_attribute_values != NULL) { |
| 253 | free(gc_stat.gc_ext_attribute_values); |
| 254 | } |
| 255 | if (nativeTypes != NULL) { |
| 256 | free(nativeTypes); |
| 257 | } |
| 258 | JNU_ThrowInternalError(env, "Unsupported attribute type"); |
| 259 | return 0; |
| 260 | } |
| 261 | } |
| 262 | if (gc_stat.gc_ext_attribute_values != NULL) { |
| 263 | free(gc_stat.gc_ext_attribute_values); |
| 264 | } |
| 265 | if (nativeTypes != NULL) { |
| 266 | free(nativeTypes); |
| 267 | } |
| 268 | |
| 269 | return JNU_NewObjectByName(env, |
| 270 | "com/sun/management/GcInfo", |
| 271 | "(Lsun/management/GcInfoBuilder;JJJ[Ljava/lang/management/MemoryUsage;[Ljava/lang/management/MemoryUsage;[Ljava/lang/Object;)V", |
| 272 | builder, |
| 273 | gc_stat.gc_index, |
| 274 | gc_stat.start_time, |
| 275 | gc_stat.end_time, |
| 276 | usageBeforeGC, |
| 277 | usageAfterGC, |
| 278 | ext_att_values); |
| 279 | } |