/* * Copyright (c) 2003, 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 "FrameID.h" #include "threadControl.h" /* FrameID: */ /* ------------------------------------------------------------ */ /* | thread frame generation (48 bits)| frame number (16 bits)| */ /* ------------------------------------------------------------ */ #define FNUM_BWIDTH 16 #define FNUM_BMASK ((1<<FNUM_BWIDTH)-1) FrameID createFrameID(jthread thread, FrameNumber fnum) { FrameID frame; jlong frameGeneration; frameGeneration = threadControl_getFrameGeneration(thread); frame = (frameGeneration<<FNUM_BWIDTH) | (jlong)fnum; return frame; } FrameNumber getFrameNumber(FrameID frame) { /*LINTED*/ return (FrameNumber)(((jint)frame) & FNUM_BMASK); } jdwpError validateFrameID(jthread thread, FrameID frame) { jlong frameGeneration; frameGeneration = threadControl_getFrameGeneration(thread); if ( frameGeneration != (frame>>FNUM_BWIDTH) ) { return JDWP_ERROR(INVALID_FRAMEID); } return JDWP_ERROR(NONE); }