| /* |
| * 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); |
| } |