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Java example source code file (StackFrameImpl.c)
The StackFrameImpl.c Java example source code/* * Copyright (c) 1998, 2005, Oracle and/or its affiliates. All rights reserved. * DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER. * * This code 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. Oracle designates this * particular file as subject to the "Classpath" exception as provided * by Oracle in the LICENSE file that accompanied this code. * * This code 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 in the LICENSE file that * accompanied this code). * * 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 Oracle, 500 Oracle Parkway, Redwood Shores, CA 94065 USA * or visit www.oracle.com if you need additional information or have any * questions. */ #include "util.h" #include "StackFrameImpl.h" #include "inStream.h" #include "outStream.h" #include "threadControl.h" #include "FrameID.h" static jdwpError validateThreadFrame(jthread thread, FrameID frame) { jvmtiError error; jdwpError serror; jint count; error = threadControl_suspendCount(thread, &count); if ( error == JVMTI_ERROR_NONE ) { if ( count > 0 ) { serror = validateFrameID(thread, frame); } else { serror = JDWP_ERROR(THREAD_NOT_SUSPENDED); } } else { serror = map2jdwpError(error); } return serror; } static jdwpError writeVariableValue(JNIEnv *env, PacketOutputStream *out, jthread thread, FrameNumber fnum, jint slot, jbyte typeKey) { jvmtiError error; jvalue value; if (isObjectTag(typeKey)) { WITH_LOCAL_REFS(env, 1) { error = JVMTI_FUNC_PTR(gdata->jvmti,GetLocalObject) (gdata->jvmti, thread, fnum, slot, &value.l); if (error != JVMTI_ERROR_NONE) { outStream_setError(out, map2jdwpError(error)); } else { (void)outStream_writeByte(out, specificTypeKey(env, value.l)); (void)outStream_writeObjectRef(env, out, value.l); } } END_WITH_LOCAL_REFS(env); } else { /* * For primitive types, the type key is bounced back as is. */ (void)outStream_writeByte(out, typeKey); switch (typeKey) { case JDWP_TAG(BYTE): { jint intValue; error = JVMTI_FUNC_PTR(gdata->jvmti,GetLocalInt) (gdata->jvmti, thread, fnum, slot, &intValue); (void)outStream_writeByte(out, (jbyte)intValue); break; } case JDWP_TAG(CHAR): { jint intValue; error = JVMTI_FUNC_PTR(gdata->jvmti,GetLocalInt) (gdata->jvmti, thread, fnum, slot, &intValue); (void)outStream_writeChar(out, (jchar)intValue); break; } case JDWP_TAG(FLOAT): error = JVMTI_FUNC_PTR(gdata->jvmti,GetLocalFloat) (gdata->jvmti, thread, fnum, slot, &value.f); (void)outStream_writeFloat(out, value.f); break; case JDWP_TAG(DOUBLE): error = JVMTI_FUNC_PTR(gdata->jvmti,GetLocalDouble) (gdata->jvmti, thread, fnum, slot, &value.d); (void)outStream_writeDouble(out, value.d); break; case JDWP_TAG(INT): error = JVMTI_FUNC_PTR(gdata->jvmti,GetLocalInt) (gdata->jvmti, thread, fnum, slot, &value.i); (void)outStream_writeInt(out, value.i); break; case JDWP_TAG(LONG): error = JVMTI_FUNC_PTR(gdata->jvmti,GetLocalLong) (gdata->jvmti, thread, fnum, slot, &value.j); (void)outStream_writeLong(out, value.j); break; case JDWP_TAG(SHORT): { jint intValue; error = JVMTI_FUNC_PTR(gdata->jvmti,GetLocalInt) (gdata->jvmti, thread, fnum, slot, &intValue); (void)outStream_writeShort(out, (jshort)intValue); break; } case JDWP_TAG(BOOLEAN):{ jint intValue; error = JVMTI_FUNC_PTR(gdata->jvmti,GetLocalInt) (gdata->jvmti, thread, fnum, slot, &intValue); (void)outStream_writeBoolean(out, (jboolean)intValue); break; } default: return JDWP_ERROR(INVALID_TAG); } } return map2jdwpError(error); } static jdwpError readVariableValue(JNIEnv *env, PacketInputStream *in, jthread thread, FrameNumber fnum, jint slot, jbyte typeKey) { jvmtiError error; jvalue value; if (isObjectTag(typeKey)) { value.l = inStream_readObjectRef(env, in); error = JVMTI_FUNC_PTR(gdata->jvmti,SetLocalObject) (gdata->jvmti, thread, fnum, slot, value.l); } else { switch (typeKey) { case JDWP_TAG(BYTE): value.b = inStream_readByte(in); error = JVMTI_FUNC_PTR(gdata->jvmti,SetLocalInt) (gdata->jvmti, thread, fnum, slot, value.b); break; case JDWP_TAG(CHAR): value.c = inStream_readChar(in); error = JVMTI_FUNC_PTR(gdata->jvmti,SetLocalInt) (gdata->jvmti, thread, fnum, slot, value.c); break; case JDWP_TAG(FLOAT): value.f = inStream_readFloat(in); error = JVMTI_FUNC_PTR(gdata->jvmti,SetLocalFloat) (gdata->jvmti, thread, fnum, slot, value.f); break; case JDWP_TAG(DOUBLE): value.d = inStream_readDouble(in); error = JVMTI_FUNC_PTR(gdata->jvmti,SetLocalDouble) (gdata->jvmti, thread, fnum, slot, value.d); break; case JDWP_TAG(INT): value.i = inStream_readInt(in); error = JVMTI_FUNC_PTR(gdata->jvmti,SetLocalInt) (gdata->jvmti, thread, fnum, slot, value.i); break; case JDWP_TAG(LONG): value.j = inStream_readLong(in); error = JVMTI_FUNC_PTR(gdata->jvmti,SetLocalLong) (gdata->jvmti, thread, fnum, slot, value.j); break; case JDWP_TAG(SHORT): value.s = inStream_readShort(in); error = JVMTI_FUNC_PTR(gdata->jvmti,SetLocalInt) (gdata->jvmti, thread, fnum, slot, value.s); break; case JDWP_TAG(BOOLEAN): value.z = inStream_readBoolean(in); error = JVMTI_FUNC_PTR(gdata->jvmti,SetLocalInt) (gdata->jvmti, thread, fnum, slot, value.z); break; default: return JDWP_ERROR(INVALID_TAG); } } return map2jdwpError(error); } static jboolean getValues(PacketInputStream *in, PacketOutputStream *out) { JNIEnv *env; int i; jdwpError serror; jthread thread; FrameID frame; jint variableCount; env = getEnv(); thread = inStream_readThreadRef(env, in); if (inStream_error(in)) { return JNI_TRUE; } frame = inStream_readFrameID(in); if (inStream_error(in)) { return JNI_TRUE; } variableCount = inStream_readInt(in); if (inStream_error(in)) { return JNI_TRUE; } /* * Validate the frame id */ serror = validateThreadFrame(thread, frame); if (serror != JDWP_ERROR(NONE)) { outStream_setError(out, serror); return JNI_TRUE; } (void)outStream_writeInt(out, variableCount); for (i = 0; (i < variableCount) && !outStream_error(out); i++) { jint slot; jbyte typeKey; FrameNumber fnum; slot = inStream_readInt(in); if (inStream_error(in)) break; typeKey = inStream_readByte(in); if (inStream_error(in)) break; fnum = getFrameNumber(frame); serror = writeVariableValue(env, out, thread, fnum, slot, typeKey); if (serror != JDWP_ERROR(NONE)) { outStream_setError(out, serror); break; } } return JNI_TRUE; } static jboolean setValues(PacketInputStream *in, PacketOutputStream *out) { JNIEnv *env; jint i; jdwpError serror; jthread thread; FrameID frame; jint variableCount; env = getEnv(); thread = inStream_readThreadRef(env, in); if (inStream_error(in)) { return JNI_TRUE; } frame = inStream_readFrameID(in); if (inStream_error(in)) { return JNI_TRUE; } variableCount = inStream_readInt(in); if (inStream_error(in)) { return JNI_TRUE; } /* * Validate the frame id */ serror = validateThreadFrame(thread, frame); if (serror != JDWP_ERROR(NONE)) { outStream_setError(out, serror); return JNI_TRUE; } for (i = 0; (i < variableCount) && !inStream_error(in); i++) { jint slot; jbyte typeKey; FrameNumber fnum; slot = inStream_readInt(in); if (inStream_error(in)) { return JNI_TRUE; } typeKey = inStream_readByte(in); if (inStream_error(in)) { return JNI_TRUE; } fnum = getFrameNumber(frame); serror = readVariableValue(env, in, thread, fnum, slot, typeKey); if (serror != JDWP_ERROR(NONE)) break; } if (serror != JDWP_ERROR(NONE)) { outStream_setError(out, serror); } return JNI_TRUE; } static jboolean thisObject(PacketInputStream *in, PacketOutputStream *out) { JNIEnv *env; jdwpError serror; jthread thread; FrameID frame; env = getEnv(); thread = inStream_readThreadRef(env, in); if (inStream_error(in)) { return JNI_TRUE; } frame = inStream_readFrameID(in); if (inStream_error(in)) { return JNI_TRUE; } /* * Validate the frame id */ serror = validateThreadFrame(thread, frame); if (serror != JDWP_ERROR(NONE)) { outStream_setError(out, serror); return JNI_TRUE; } WITH_LOCAL_REFS(env, 2) { jvmtiError error; jmethodID method; jlocation location; FrameNumber fnum; /* * Find out if the given frame is for a static or native method. */ fnum = getFrameNumber(frame); error = JVMTI_FUNC_PTR(gdata->jvmti,GetFrameLocation) (gdata->jvmti, thread, fnum, &method, &location); if (error == JVMTI_ERROR_NONE) { jint modifiers; error = methodModifiers(method, &modifiers); if (error == JVMTI_ERROR_NONE) { jobject this_object; /* * Return null for static or native methods; otherwise, the JVM * spec guarantees that "this" is in slot 0 */ if (modifiers & (MOD_STATIC | MOD_NATIVE)) { this_object = NULL; (void)outStream_writeByte(out, specificTypeKey(env, this_object)); (void)outStream_writeObjectRef(env, out, this_object); } else { error = JVMTI_FUNC_PTR(gdata->jvmti,GetLocalObject) (gdata->jvmti, thread, fnum, 0, &this_object); if (error == JVMTI_ERROR_NONE) { (void)outStream_writeByte(out, specificTypeKey(env, this_object)); (void)outStream_writeObjectRef(env, out, this_object); } } } } serror = map2jdwpError(error); } END_WITH_LOCAL_REFS(env); if (serror != JDWP_ERROR(NONE)) outStream_setError(out, serror); return JNI_TRUE; } static jboolean popFrames(PacketInputStream *in, PacketOutputStream *out) { jvmtiError error; jdwpError serror; jthread thread; FrameID frame; FrameNumber fnum; thread = inStream_readThreadRef(getEnv(), in); if (inStream_error(in)) { return JNI_TRUE; } frame = inStream_readFrameID(in); if (inStream_error(in)) { return JNI_TRUE; } /* * Validate the frame id */ serror = validateThreadFrame(thread, frame); if (serror != JDWP_ERROR(NONE)) { outStream_setError(out, serror); return JNI_TRUE; } if (threadControl_isDebugThread(thread)) { outStream_setError(out, JDWP_ERROR(INVALID_THREAD)); return JNI_TRUE; } fnum = getFrameNumber(frame); error = threadControl_popFrames(thread, fnum); if (error != JVMTI_ERROR_NONE) { serror = map2jdwpError(error); outStream_setError(out, serror); } return JNI_TRUE; } void *StackFrame_Cmds[] = { (void *)0x4 ,(void *)getValues ,(void *)setValues ,(void *)thisObject ,(void *)popFrames }; Other Java examples (source code examples)Here is a short list of links related to this Java StackFrameImpl.c source code file: |
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