referencetypeimpl.c

来自「This is a resource based on j2me embedde」· C语言 代码 · 共 632 行 · 第 1/2 页

/*
 * @(#)ReferenceTypeImpl.c	1.45 06/10/25
 *
 * Copyright  1990-2008 Sun Microsystems, Inc. All Rights Reserved.
 * DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER
 * 
 * This program is free software; you can redistribute it and/or
 * modify it under the terms of the GNU General Public License version
 * 2 only, as published by the Free Software Foundation. 
 * 
 * This program is distributed in the hope that it will be useful, but
 * WITHOUT ANY WARRANTY; without even the implied warranty of
 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
 * General Public License version 2 for more details (a copy is
 * included at /legal/license.txt). 
 * 
 * You should have received a copy of the GNU General Public License
 * version 2 along with this work; if not, write to the Free Software
 * Foundation, Inc., 51 Franklin St, Fifth Floor, Boston, MA
 * 02110-1301 USA 
 * 
 * Please contact Sun Microsystems, Inc., 4150 Network Circle, Santa
 * Clara, CA 95054 or visit www.sun.com if you need additional
 * information or have any questions. 
 */

#include "util.h"
#include "ReferenceTypeImpl.h"
#include "inStream.h"
#include "outStream.h"


static jboolean 
signature(PacketInputStream *in, PacketOutputStream *out)
{
    char *signature = NULL;    
    jclass clazz;
    jvmtiError error;
    
    clazz = inStream_readClassRef(getEnv(), in);
    if (inStream_error(in)) {
        return JNI_TRUE;
    }

    error = classSignature(clazz, &signature, NULL);
    if (error != JVMTI_ERROR_NONE) {
        outStream_setError(out, map2jdwpError(error));
        return JNI_TRUE;
    }

    (void)outStream_writeString(out, signature);
    jvmtiDeallocate(signature);
    
    return JNI_TRUE;
}

static jboolean
signatureWithGeneric(PacketInputStream *in, PacketOutputStream *out)
{
  /* Returns both the signature and the generic signature */
    char *signature = NULL;
    char *genericSignature = NULL;    
    jclass clazz;
    jvmtiError error;
    
    clazz = inStream_readClassRef(getEnv(), in);
    if (inStream_error(in)) {
        return JNI_TRUE;
    }
    error = classSignature(clazz, &signature, &genericSignature);
    if (error != JVMTI_ERROR_NONE) {
        outStream_setError(out, map2jdwpError(error));
        return JNI_TRUE;
    }

    (void)outStream_writeString(out, signature);
    writeGenericSignature(out, genericSignature);
    jvmtiDeallocate(signature);
    if (genericSignature != NULL) {
      jvmtiDeallocate(genericSignature);
    }

    
    return JNI_TRUE;
}

static jboolean 
getClassLoader(PacketInputStream *in, PacketOutputStream *out)
{
    jclass clazz;
    jobject loader;
    jvmtiError error;
    JNIEnv *env;

    env = getEnv();
 
    clazz = inStream_readClassRef(env, in);
    if (inStream_error(in)) {
        return JNI_TRUE;
    }

    WITH_LOCAL_REFS(env, 1) {

      error = classLoader(clazz, &loader);
      if (error != JVMTI_ERROR_NONE) {
        outStream_setError(out, map2jdwpError(error));
      } else {
        (void)outStream_writeObjectRef(env, out, loader);
      }
    } END_WITH_LOCAL_REFS(env);
    return JNI_TRUE;
}

static jboolean 
modifiers(PacketInputStream *in, PacketOutputStream *out)
{
    jint modifiers;
    jclass clazz;
    jvmtiError error;
    
    clazz = inStream_readClassRef(getEnv(), in);
    if (inStream_error(in)) {
        return JNI_TRUE;
    }

    error = JVMTI_FUNC_PTR(gdata->jvmti,GetClassModifiers)
                (gdata->jvmti, clazz, &modifiers);
    if (error != JVMTI_ERROR_NONE) {
        outStream_setError(out, map2jdwpError(error));
        return JNI_TRUE;
    }
    
    (void)outStream_writeInt(out, modifiers);
    
    return JNI_TRUE;
}

static void 
writeMethodInfo(PacketOutputStream *out, jclass clazz, jmethodID method,
                int outputGenerics)
{
    char *name = NULL;
    char *signature = NULL;
    char *genericSignature = NULL;
    jint modifiers;
    jvmtiError error;
    jboolean isSynthetic;
    
    error = isMethodSynthetic(method, &isSynthetic);
    if (error != JVMTI_ERROR_NONE) {
        outStream_setError(out, map2jdwpError(error));
        return;
    }

    error = methodModifiers(method, &modifiers);
    if (error != JVMTI_ERROR_NONE) {
        outStream_setError(out, map2jdwpError(error));
        return;
    }
    
    error = methodSignature(method, &name, &signature, &genericSignature);
    if (error != JVMTI_ERROR_NONE) {
        outStream_setError(out, map2jdwpError(error));
        return;
    }

    if (isSynthetic) {
        modifiers |= MOD_SYNTHETIC;
    }
    (void)outStream_writeMethodID(out, method);
    (void)outStream_writeString(out, name);
    (void)outStream_writeString(out, signature);
    if (outputGenerics == 1) {
        writeGenericSignature(out, genericSignature);
    }
    (void)outStream_writeInt(out, modifiers);
    jvmtiDeallocate(name);
    jvmtiDeallocate(signature);
    if (genericSignature != NULL) {
      jvmtiDeallocate(genericSignature);
    }
}

static jboolean 
methods1(PacketInputStream *in, PacketOutputStream *out,
         int outputGenerics)
{
    int i;
    jclass clazz;
    jint methodCount = 0;
    jmethodID *methods = NULL;
    jvmtiError error;
    
    clazz = inStream_readClassRef(getEnv(), in);
    if (inStream_error(in)) {
        return JNI_TRUE;
    }

    error = JVMTI_FUNC_PTR(gdata->jvmti,GetClassMethods)
                (gdata->jvmti, clazz, &methodCount, &methods);
    if (error != JVMTI_ERROR_NONE) {
        outStream_setError(out, map2jdwpError(error));
        return JNI_TRUE;
    }

    (void)outStream_writeInt(out, methodCount);
    for (i = 0; (i < methodCount) && !outStream_error(out); i++) {
        writeMethodInfo(out, clazz, methods[i], outputGenerics);
    }

    /* Free methods array */
    if ( methods != NULL ) {
        jvmtiDeallocate(methods);
    }
    return JNI_TRUE;
}

static jboolean 
methods(PacketInputStream *in, PacketOutputStream *out,
         int outputGenerics)
{
    return methods1(in, out, 0);
}

static jboolean
methodsWithGeneric(PacketInputStream *in, PacketOutputStream *out) 
{
    return methods1(in, out, 1);
}



static jboolean
instances(PacketInputStream *in, PacketOutputStream *out) 
{
    jint maxInstances;
    jclass clazz;
    JNIEnv *env;

    if (gdata->vmDead) {
        outStream_setError(out, JDWP_ERROR(VM_DEAD));                    
        return JNI_TRUE;
    }

    env = getEnv();
    clazz = inStream_readClassRef(env, in);
    maxInstances = inStream_readInt(in);
    if (inStream_error(in)) {
        return JNI_TRUE;
    }
        
    WITH_LOCAL_REFS(env, 1) {
        jvmtiError   error;
        ObjectBatch  batch;
        
        error = classInstances(clazz, &batch, maxInstances);
        if (error != JVMTI_ERROR_NONE) {
            outStream_setError(out, map2jdwpError(error));
        } else {
            int kk;
            jbyte typeKey;

            (void)outStream_writeInt(out, batch.count);
            if (batch.count > 0) {
                /* 
                 * They are all instances of this class and will all have 
                 * the same typeKey, so just compute it once.
                 */
                typeKey = specificTypeKey(env, batch.objects[0]);

                for (kk = 0; kk < batch.count; kk++) {
                  jobject inst;

                  inst = batch.objects[kk];
                  (void)outStream_writeByte(out, typeKey);
                  (void)outStream_writeObjectRef(env, out, inst);
                }
            }
            jvmtiDeallocate(batch.objects);
        }
    } END_WITH_LOCAL_REFS(env);

    return JNI_TRUE;
}

static jboolean
getClassVersion(PacketInputStream *in, PacketOutputStream *out) 
{
    jclass clazz;
    jvmtiError error;
    jint majorVersion;
    jint minorVersion;
    
    clazz = inStream_readClassRef(getEnv(), in);
    if (inStream_error(in)) {
        return JNI_TRUE;
    }

    error = JVMTI_FUNC_PTR(gdata->jvmti, GetClassVersionNumbers)
                (gdata->jvmti, clazz, &minorVersion, &majorVersion);
    if (error != JVMTI_ERROR_NONE) {
        outStream_setError(out, map2jdwpError(error));
        return JNI_TRUE;
    }
 
    (void)outStream_writeInt(out, majorVersion);
    (void)outStream_writeInt(out, minorVersion);

    return JNI_TRUE;
}

static jboolean
getConstantPool(PacketInputStream *in, PacketOutputStream *out)
{

    jclass clazz;