Пример #1
0
        /// <summary>
        /// Retrieves a list of the stack frames for this thread. (http://msdn.microsoft.com/en-ca/library/bb145138.aspx)
        /// </summary>
        /// <param name="dwFieldSpec"> A combination of flags from the FRAMEINFO_FLAGS enumeration that specifies which fields of the
        /// FRAMEINFO structures are to be filled out. </param>
        /// <param name="nRadix"> Radix used in formatting numerical information in the enumerator. </param>
        /// <param name="ppEnum"> Returns an IEnumDebugFrameInfo2 object that contains a list of FRAMEINFO structures describing the
        /// stack frame. </param>
        /// <returns> If successful, returns S_OK; otherwise, returns an error code. </returns>
        int IDebugThread2.EnumFrameInfo(enum_FRAMEINFO_FLAGS dwFieldSpec, uint nRadix, out IEnumDebugFrameInfo2 ppEnum)
        {
            if (this._id == "")
            {
                ppEnum = null;
                return(Constants.S_FALSE);
            }

            if (this._engine.evaluatedTheseFlags(this._id, dwFieldSpec))
            {
                ppEnum = new AD7FrameInfoEnum(previousFrameInfoArray);
                return(Constants.S_OK);
            }

            // Ask for general stack information.
            if ((this._id != "") && (this._id != this._engine.currentThread()._id))
            {
                _engine.eDispatcher.selectThread(this._id);
            }

            string stackResponse = _engine.eDispatcher.getStackFrames().Replace("#;;;;", "");

            if (stackResponse == "")
            {
                ppEnum = null;
                return(Constants.S_FALSE);
            }
            string[] frameStrings = stackResponse.Split('#');

            // Query the stack depth without inquiring GDB.
            int numStackFrames = frameStrings.Length;

            if (numStackFrames > 30) // limiting the amount of stackFrames to avoid VS crashing.
            {
                numStackFrames = 30;
            }

            ppEnum = null;
            try
            {
                bool        created        = false;
                FRAMEINFO[] frameInfoArray = new FRAMEINFO[numStackFrames];
                for (int i = 0; i < numStackFrames; i++)
                {
                    string[] frameInfo = frameStrings[i].Split(';');
                    if (frameInfo.Length >= 3)
                    {
                        if (frameInfo[3].Contains("~"))
                        {
                            // Need to lengthen the path used by Visual Studio.
                            StringBuilder longPathName = new StringBuilder(1024);
                            GetLongPathName(frameInfo[3], longPathName, longPathName.Capacity);
                            frameInfo[3] = longPathName.ToString();
                        }
                        AD7StackFrame frame = AD7StackFrame.create(_engine, this, frameInfo, ref created);
                        if (frame.m_thread.__stackFrames == null) // that's weird, but sometimes VS is not initializing __stackFrames, so I added this loop to avoid other problems.
                        {
                            while (frame.m_thread.__stackFrames == null)
                            {
                                frame.m_thread.__stackFrames = new ArrayList()
                                {
                                    frame
                                }
                            }
                            ;
                        }
                        frame.SetFrameInfo(dwFieldSpec, out frameInfoArray[i]);
                    }
                }
                if ((previousFrameInfoArray.Length != frameInfoArray.Length) || (created == true))
                {
                    previousFrameInfoArray = frameInfoArray;
                    ppEnum = new AD7FrameInfoEnum(frameInfoArray);
                }
                else
                {
                    bool isEqual = true;
                    for (int i = 0; i < frameInfoArray.Length; i++)
                    {
                        if (frameInfoArray[i].m_bstrFuncName != previousFrameInfoArray[i].m_bstrFuncName)
                        {
                            isEqual = false;
                            break;
                        }
                        if (frameInfoArray[i].m_dwValidFields != previousFrameInfoArray[i].m_dwValidFields)
                        {
                            isEqual = false;
                            break;
                        }
                        if (frameInfoArray[i].m_bstrLanguage != previousFrameInfoArray[i].m_bstrLanguage)
                        {
                            isEqual = false;
                            break;
                        }
                    }
                    if (!isEqual)
                    {
                        previousFrameInfoArray = frameInfoArray;
                        ppEnum = new AD7FrameInfoEnum(frameInfoArray);
                    }
                    else
                    {
                        ppEnum = new AD7FrameInfoEnum(previousFrameInfoArray);
                    }
                }

                if ((this._id != "") && (this._id != this._engine.currentThread()._id))
                {
                    _engine.eDispatcher.selectThread(this._engine.currentThread()._id);
                }

                return(Constants.S_OK);
            }
            catch (ComponentException e)
            {
                if ((this._id != "") && (this._id != this._engine.currentThread()._id))
                {
                    _engine.eDispatcher.selectThread(this._engine.currentThread()._id);
                }
                return(e.HResult);
            }
            catch (Exception e)
            {
                if ((this._id != "") && (this._id != this._engine.currentThread()._id))
                {
                    _engine.eDispatcher.selectThread(this._engine.currentThread()._id);
                }
                return(EngineUtils.UnexpectedException(e));
            }
        }