1 /*
   2  * Copyright (c) 1998, 2005, Oracle and/or its affiliates. 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.  Oracle designates this
   8  * particular file as subject to the "Classpath" exception as provided
   9  * by Oracle 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 Oracle, 500 Oracle Parkway, Redwood Shores, CA 94065 USA
  22  * or visit www.oracle.com if you need additional information or have any
  23  * questions.
  24  */
  25 
  26 #ifndef JDWP_STEPCONTROL_H
  27 #define JDWP_STEPCONTROL_H
  28 
  29 #include "eventFilter.h"
  30 #include "eventHandler.h"
  31 
  32 typedef struct {
  33     /* Parameters */
  34     jint granularity;
  35     jint depth;
  36 
  37     /* State */
  38     jboolean pending;
  39     jboolean is_fiber;       /* we are stepping in a fiber */
  40     jboolean frameExited;    /* for depth == STEP_OVER or STEP_OUT */
  41     jboolean fromNative;
  42     jint fromStackDepth;     /* for all but STEP_INTO STEP_INSTRUCTION */
  43     jint fromLine;           /* for granularity == STEP_LINE */
  44     jmethodID method;   /* Where line table came from. */
  45     jvmtiLineNumberEntry *lineEntries;       /* STEP_LINE */
  46     jint lineEntryCount;     /* for granularity == STEP_LINE */
  47 
  48     HandlerNode *stepHandlerNode;
  49     HandlerNode *catchHandlerNode;
  50     HandlerNode *framePopHandlerNode;
  51     HandlerNode *methodEnterHandlerNode;
  52 } StepRequest;
  53 
  54 
  55 void stepControl_initialize(void);
  56 void stepControl_reset(void);
  57 
  58 jboolean stepControl_handleStep(JNIEnv *env, jthread thread, jthread fiber, jboolean matchesFiber,
  59                                 jclass clazz, jmethodID method);
  60 
  61 jvmtiError stepControl_beginStep(JNIEnv *env, jthread thread,
  62                                 jint size, jint depth, HandlerNode *node);
  63 jvmtiError stepControl_endStep(jthread thread);
  64 
  65 void stepControl_clearRequest(jthread thread, StepRequest *step);
  66 void stepControl_resetRequest(jthread thread);
  67 
  68 void stepControl_enableStepping(jthread thread);
  69 void stepControl_disableStepping(jthread thread);
  70 
  71 void stepControl_lock(void);
  72 void stepControl_unlock(void);
  73 
  74 void
  75 stepControl_handleContinuationRun(JNIEnv *env, jthread thread, StepRequest *step);
  76 
  77 #endif