J. Duke | 319a3b9 | 2007-12-01 00:00:00 +0000 | [diff] [blame^] | 1 | /* |
| 2 | * Copyright 1999-2004 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 | #include <stdlib.h> |
| 26 | #include <jni.h> |
| 27 | #include "SharedMemory.h" |
| 28 | #include "com_sun_tools_jdi_SharedMemoryTransportService.h" |
| 29 | #include "jdwpTransport.h" |
| 30 | #include "shmemBase.h" |
| 31 | #include "sys.h" |
| 32 | |
| 33 | /* |
| 34 | * JNI interface to the shared memory transport. These JNI methods |
| 35 | * call the base shared memory support to do the real work. |
| 36 | * |
| 37 | * That is, this is the front-ends interface to our shared memory |
| 38 | * transport establishment code. |
| 39 | */ |
| 40 | |
| 41 | /* |
| 42 | * When initializing the transport from the front end, we use |
| 43 | * standard malloc and free for allocation. |
| 44 | */ |
| 45 | static void *allocateWrapper(jint size) { |
| 46 | return malloc(size); |
| 47 | } |
| 48 | static jdwpTransportCallback callbacks = {allocateWrapper, free}; |
| 49 | |
| 50 | void |
| 51 | throwException(JNIEnv *env, char *exceptionClassName, char *message) |
| 52 | { |
| 53 | jclass excClass = (*env)->FindClass(env, exceptionClassName); |
| 54 | if ((*env)->ExceptionOccurred(env)) { |
| 55 | return; |
| 56 | } |
| 57 | (*env)->ThrowNew(env, excClass, message); |
| 58 | } |
| 59 | |
| 60 | void |
| 61 | throwShmemException(JNIEnv *env, char *message, jint errorCode) |
| 62 | { |
| 63 | char msg[80]; |
| 64 | char buf[255]; |
| 65 | |
| 66 | if (shmemBase_getlasterror(msg, sizeof(msg)) == SYS_OK) { |
| 67 | sprintf(buf, "%s: %s\n", message, msg); |
| 68 | } else { |
| 69 | sprintf(buf, "%s, error code = %d", message, errorCode); |
| 70 | } |
| 71 | throwException(env, "java/io/IOException", buf); |
| 72 | } |
| 73 | |
| 74 | /* |
| 75 | * Class: com_sun_tools_jdi_SharedMemoryTransport |
| 76 | * Method: accept0 |
| 77 | * Signature: (J)J |
| 78 | */ |
| 79 | JNIEXPORT jlong JNICALL Java_com_sun_tools_jdi_SharedMemoryTransportService_accept0 |
| 80 | (JNIEnv *env, jobject thisObject, jlong id, jlong timeout) |
| 81 | { |
| 82 | SharedMemoryConnection *connection = NULL; |
| 83 | SharedMemoryTransport *transport = ID_TO_TRANSPORT(id); |
| 84 | jint rc; |
| 85 | |
| 86 | rc = shmemBase_accept(transport, (long)timeout, &connection); |
| 87 | if (rc != SYS_OK) { |
| 88 | if (rc == SYS_TIMEOUT) { |
| 89 | throwException(env, "com/sun/jdi/connect/TransportTimeoutException", |
| 90 | "Timed out waiting for target VM to connect"); |
| 91 | } else { |
| 92 | throwShmemException(env, "shmemBase_accept failed", rc); |
| 93 | } |
| 94 | return -1; |
| 95 | } |
| 96 | return CONNECTION_TO_ID(connection); |
| 97 | } |
| 98 | |
| 99 | /* |
| 100 | * Class: com_sun_tools_jdi_SharedMemoryTransport |
| 101 | * Method: attach0 |
| 102 | * Signature: (Ljava/lang/String;)J |
| 103 | */ |
| 104 | JNIEXPORT jlong JNICALL Java_com_sun_tools_jdi_SharedMemoryTransportService_attach0 |
| 105 | (JNIEnv *env, jobject thisObject, jstring address, jlong timeout) |
| 106 | { |
| 107 | SharedMemoryConnection *connection = NULL; |
| 108 | jint rc; |
| 109 | const char *addrChars; |
| 110 | |
| 111 | addrChars = (*env)->GetStringUTFChars(env, address, NULL); |
| 112 | if ((*env)->ExceptionOccurred(env)) { |
| 113 | return CONNECTION_TO_ID(connection); |
| 114 | } else if (addrChars == NULL) { |
| 115 | throwException(env, "java/lang/InternalError", "GetStringUTFChars failed"); |
| 116 | return CONNECTION_TO_ID(connection); |
| 117 | } |
| 118 | |
| 119 | rc = shmemBase_attach(addrChars, (long)timeout, &connection); |
| 120 | if (rc != SYS_OK) { |
| 121 | throwShmemException(env, "shmemBase_attach failed", rc); |
| 122 | } |
| 123 | |
| 124 | (*env)->ReleaseStringUTFChars(env, address, addrChars); |
| 125 | |
| 126 | return CONNECTION_TO_ID(connection); |
| 127 | } |
| 128 | |
| 129 | /* |
| 130 | * Class: com_sun_tools_jdi_SharedMemoryTransport |
| 131 | * Method: name |
| 132 | * Signature: (J)Ljava/lang/String; |
| 133 | */ |
| 134 | JNIEXPORT jstring JNICALL Java_com_sun_tools_jdi_SharedMemoryTransportService_name |
| 135 | (JNIEnv *env, jobject thisObject, jlong id) |
| 136 | { |
| 137 | char *namePtr; |
| 138 | jstring nameString = NULL; |
| 139 | |
| 140 | SharedMemoryTransport *transport = ID_TO_TRANSPORT(id); |
| 141 | jint rc = shmemBase_name(transport, &namePtr); |
| 142 | if (rc != SYS_OK) { |
| 143 | throwShmemException(env, "shmemBase_name failed", rc); |
| 144 | } else { |
| 145 | nameString = (*env)->NewStringUTF(env, namePtr); |
| 146 | if ((nameString == NULL) && !(*env)->ExceptionOccurred(env)) { |
| 147 | throwException(env, "java/lang/InternalError", "Unable to create string"); |
| 148 | } |
| 149 | } |
| 150 | return nameString; |
| 151 | } |
| 152 | |
| 153 | /* |
| 154 | * Class: com_sun_tools_jdi_SharedMemoryTransport |
| 155 | * Method: initialize |
| 156 | * Signature: ()V |
| 157 | */ |
| 158 | JNIEXPORT void JNICALL Java_com_sun_tools_jdi_SharedMemoryTransportService_initialize |
| 159 | (JNIEnv *env, jobject thisObject) |
| 160 | { |
| 161 | JavaVM *vm; |
| 162 | jint rc; |
| 163 | |
| 164 | rc = (*env)->GetJavaVM(env, &vm); |
| 165 | if (rc != 0) { |
| 166 | throwException(env, "java/lang/InternalError", "Unable to access Java VM"); |
| 167 | return; |
| 168 | } |
| 169 | |
| 170 | rc = shmemBase_initialize(vm, &callbacks); |
| 171 | if (rc != SYS_OK) { |
| 172 | throwException(env, "java/lang/InternalError", "Unable to initialize Shared Memory transport"); |
| 173 | return; |
| 174 | } |
| 175 | } |
| 176 | |
| 177 | |
| 178 | /* |
| 179 | * Class: com_sun_tools_jdi_SharedMemoryTransport |
| 180 | * Method: startListening0 |
| 181 | * Signature: (Ljava/lang/String;)J |
| 182 | */ |
| 183 | JNIEXPORT jlong JNICALL Java_com_sun_tools_jdi_SharedMemoryTransportService_startListening0 |
| 184 | (JNIEnv *env, jobject thisObject, jstring address) |
| 185 | { |
| 186 | const char *addrChars = NULL; |
| 187 | jint rc; |
| 188 | jstring retAddress = NULL; |
| 189 | SharedMemoryTransport *transport = NULL; |
| 190 | |
| 191 | |
| 192 | if (address != NULL) { |
| 193 | addrChars = (*env)->GetStringUTFChars(env, address, NULL); |
| 194 | if ((*env)->ExceptionOccurred(env)) { |
| 195 | return TRANSPORT_TO_ID(transport); |
| 196 | } else if (addrChars == NULL) { |
| 197 | throwException(env, "java/lang/InternalError", "GetStringUTFChars failed"); |
| 198 | return TRANSPORT_TO_ID(transport); |
| 199 | } |
| 200 | } |
| 201 | |
| 202 | rc = shmemBase_listen(addrChars, &transport); |
| 203 | if (rc != SYS_OK) { |
| 204 | throwShmemException(env, "shmemBase_listen failed", rc); |
| 205 | } |
| 206 | |
| 207 | if (addrChars != NULL) { |
| 208 | (*env)->ReleaseStringUTFChars(env, address, addrChars); |
| 209 | } |
| 210 | |
| 211 | return TRANSPORT_TO_ID(transport); |
| 212 | } |
| 213 | |
| 214 | /* |
| 215 | * Class: com_sun_tools_jdi_SharedMemoryTransport |
| 216 | * Method: stopListening0 |
| 217 | * Signature: (J)V |
| 218 | */ |
| 219 | JNIEXPORT void JNICALL Java_com_sun_tools_jdi_SharedMemoryTransportService_stopListening0 |
| 220 | (JNIEnv *env, jobject thisObject, jlong id) |
| 221 | { |
| 222 | SharedMemoryTransport *transport = ID_TO_TRANSPORT(id); |
| 223 | shmemBase_closeTransport(transport); |
| 224 | } |