Reorganized sources.
git-svn-id: file:///srv/svn/repos/haiku/haiku/trunk@30409 a95241bf-73f2-0310-859d-f6bbb57e9c96
This commit is contained in:
Ingo Weinhold
@@ -0,0 +1,658 @@
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/*
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* Copyright 2009, Ingo Weinhold, [email protected].
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* Distributed under the terms of the MIT License.
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*/
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#include "ModelLoader.h"
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#include <stdio.h>
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#include <string.h>
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#include <new>
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#include <AutoDeleter.h>
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#include <AutoLocker.h>
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#include <DebugEventStream.h>
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#include <system_profiler_defs.h>
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#include <thread_defs.h>
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#include "DataSource.h"
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#include "MessageCodes.h"
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#include "Model.h"
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struct SimpleWaitObjectInfo : system_profiler_wait_object_info {
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SimpleWaitObjectInfo(uint32 type)
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{
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this->type = type;
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object = 0;
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referenced_object = 0;
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name[0] = '\0';
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}
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};
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static const SimpleWaitObjectInfo kSnoozeWaitObjectInfo(
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THREAD_BLOCK_TYPE_SNOOZE);
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static const SimpleWaitObjectInfo kSignalWaitObjectInfo(
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THREAD_BLOCK_TYPE_SIGNAL);
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// #pragma mark - ThreadInfo
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ModelLoader::ThreadInfo::ThreadInfo(Model::Thread* thread)
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:
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thread(thread),
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state(UNKNOWN),
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lastTime(0),
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waitObject(NULL)
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{
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}
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// #pragma mark -
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inline void
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ModelLoader::_UpdateLastEventTime(bigtime_t time)
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{
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if (fBaseTime < 0)
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fBaseTime = time;
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fLastEventTime = time - fBaseTime;
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}
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ModelLoader::ModelLoader(DataSource* dataSource,
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const BMessenger& target, void* targetCookie)
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:
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fLock("main model loader"),
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fModel(NULL),
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fDataSource(dataSource),
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fTarget(target),
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fTargetCookie(targetCookie),
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fLoaderThread(-1),
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fLoading(false),
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fAborted(false)
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{
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}
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ModelLoader::~ModelLoader()
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{
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if (fLoaderThread >= 0) {
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Abort();
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wait_for_thread(fLoaderThread, NULL);
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}
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delete fDataSource;
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delete fModel;
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}
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status_t
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ModelLoader::StartLoading()
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{
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// check initialization
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status_t error = fLock.InitCheck();
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if (error != B_OK)
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return error;
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AutoLocker<BLocker> locker(fLock);
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if (fModel != NULL || fLoading || fDataSource == NULL)
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return B_BAD_VALUE;
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// init the hash tables
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error = fThreads.Init();
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if (error != B_OK)
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return error;
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// spawn the loader thread
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fLoaderThread = spawn_thread(&_LoaderEntry, "main model loader",
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B_NORMAL_PRIORITY, this);
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if (fLoaderThread < 0)
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return fLoaderThread;
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fLoading = true;
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fAborted = false;
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resume_thread(fLoaderThread);
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return B_OK;
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}
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void
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ModelLoader::Abort()
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{
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AutoLocker<BLocker> locker(fLock);
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if (!fLoading || fAborted)
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return;
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fAborted = true;
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}
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Model*
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ModelLoader::DetachModel()
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{
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AutoLocker<BLocker> locker(fLock);
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if (fModel == NULL || fLoading)
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return NULL;
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Model* model = fModel;
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fModel = NULL;
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return model;
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}
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/*static*/ status_t
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ModelLoader::_LoaderEntry(void* data)
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{
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return ((ModelLoader*)data)->_Loader();
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}
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status_t
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ModelLoader::_Loader()
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{
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status_t error;
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try {
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error = _Load();
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} catch(...) {
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error = B_ERROR;
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}
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// clean up and notify the target
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AutoLocker<BLocker> locker(fLock);
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ThreadInfo* threadInfo = fThreads.Clear(true);
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while (threadInfo != NULL) {
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ThreadInfo* nextInfo = threadInfo->fNext;
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delete threadInfo;
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threadInfo = nextInfo;
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}
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BMessage message;
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if (error == B_OK) {
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message.what = MSG_MODEL_LOADED_SUCCESSFULLY;
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} else {
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delete fModel;
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fModel = NULL;
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message.what = fAborted
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? MSG_MODEL_LOADED_ABORTED : MSG_MODEL_LOADED_FAILED;
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}
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message.AddPointer("loader", this);
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message.AddPointer("targetCookie", fTargetCookie);
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fTarget.SendMessage(&message);
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fLoading = false;
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return B_OK;
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}
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status_t
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ModelLoader::_Load()
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{
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// read the complete data into memory
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void* eventData;
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size_t eventDataSize;
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status_t error = _ReadDebugEvents(&eventData, &eventDataSize);
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if (error != B_OK)
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return error;
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// create a model
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fModel = new(std::nothrow) Model(eventData, eventDataSize);
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if (fModel == NULL) {
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free(eventData);
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return B_NO_MEMORY;
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}
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// create a debug input stream
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BDebugEventInputStream* input = new(std::nothrow) BDebugEventInputStream;
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if (input == NULL)
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return B_NO_MEMORY;
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ObjectDeleter<BDebugEventInputStream> inputDeleter(input);
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error = input->SetTo(eventData, eventDataSize, false);
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if (error != B_OK)
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return error;
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// add the snooze and signal wait objects to the model
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if (fModel->AddWaitObject(&kSnoozeWaitObjectInfo, NULL) == NULL
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|| fModel->AddWaitObject(&kSignalWaitObjectInfo, NULL) == NULL) {
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return B_NO_MEMORY;
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}
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// process the events
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fBaseTime = -1;
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fLastEventTime = -1;
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uint32 count = 0;
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while (true) {
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// get next event
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uint32 event;
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uint32 cpu;
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const void* buffer;
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ssize_t bufferSize = input->ReadNextEvent(&event, &cpu, &buffer);
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if (bufferSize < 0)
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return bufferSize;
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if (buffer == NULL)
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return B_OK;
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// process the event
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status_t error = _ProcessEvent(event, cpu, buffer, bufferSize);
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if (error != B_OK)
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return error;
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// periodically check whether we're supposed to abort
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if (++count % 32 == 0) {
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AutoLocker<BLocker> locker(fLock);
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if (fAborted)
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return B_ERROR;
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}
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}
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}
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status_t
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ModelLoader::_ReadDebugEvents(void** _eventData, size_t* _size)
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{
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// get a BDataIO from the data source
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BDataIO* io;
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status_t error = fDataSource->CreateDataIO(&io);
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if (error != B_OK)
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return error;
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ObjectDeleter<BDataIO> dataIOtDeleter(io);
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// First we need to find out how large a buffer to allocate.
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size_t size;
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if (BPositionIO* positionIO = dynamic_cast<BPositionIO*>(io)) {
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// it's a BPositionIO -- this makes things easier, since we know how
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// many bytes to read
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off_t currentPos = positionIO->Position();
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if (currentPos < 0)
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return currentPos;
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off_t fileSize;
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error = positionIO->GetSize(&fileSize);
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if (error != B_OK)
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return error;
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size = fileSize - currentPos;
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} else {
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// no BPositionIO -- we need to determine the total size by iteratively
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// reading the whole data one time
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// allocate a dummy buffer for reading
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const size_t kBufferSize = 1024 * 1024;
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void* buffer = malloc(kBufferSize);
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if (buffer == NULL)
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return B_NO_MEMORY;
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MemoryDeleter bufferDeleter(buffer);
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size = 0;
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while (true) {
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ssize_t bytesRead = io->Read(buffer, kBufferSize);
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if (bytesRead < 0)
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return bytesRead;
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if (bytesRead == 0)
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break;
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size += bytesRead;
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}
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// we've got the size -- recreate the BDataIO
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dataIOtDeleter.Delete();
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error = fDataSource->CreateDataIO(&io);
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if (error != B_OK)
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return error;
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dataIOtDeleter.SetTo(io);
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}
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// allocate the data buffer
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void* data = malloc(size);
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if (data == NULL)
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return B_NO_MEMORY;
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MemoryDeleter dataDeleter(data);
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// read the data
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ssize_t bytesRead = io->Read(data, size);
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if (bytesRead < 0)
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return bytesRead;
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if ((size_t)bytesRead != size)
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return B_FILE_ERROR;
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dataDeleter.Detach();
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*_eventData = data;
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*_size = size;
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return B_OK;
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}
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status_t
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ModelLoader::_ProcessEvent(uint32 event, uint32 cpu, const void* buffer,
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size_t size)
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{
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switch (event) {
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case B_SYSTEM_PROFILER_TEAM_ADDED:
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_HandleTeamAdded((system_profiler_team_added*)buffer);
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break;
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case B_SYSTEM_PROFILER_TEAM_REMOVED:
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_HandleTeamRemoved((system_profiler_team_removed*)buffer);
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break;
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case B_SYSTEM_PROFILER_TEAM_EXEC:
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_HandleTeamExec((system_profiler_team_exec*)buffer);
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break;
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case B_SYSTEM_PROFILER_THREAD_ADDED:
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_HandleThreadAdded((system_profiler_thread_added*)buffer);
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break;
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case B_SYSTEM_PROFILER_THREAD_REMOVED:
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_HandleThreadRemoved((system_profiler_thread_removed*)buffer);
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break;
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case B_SYSTEM_PROFILER_THREAD_SCHEDULED:
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_HandleThreadScheduled((system_profiler_thread_scheduled*)buffer);
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break;
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case B_SYSTEM_PROFILER_THREAD_ENQUEUED_IN_RUN_QUEUE:
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_HandleThreadEnqueuedInRunQueue(
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(thread_enqueued_in_run_queue*)buffer);
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break;
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case B_SYSTEM_PROFILER_THREAD_REMOVED_FROM_RUN_QUEUE:
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_HandleThreadRemovedFromRunQueue(
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(thread_removed_from_run_queue*)buffer);
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break;
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case B_SYSTEM_PROFILER_WAIT_OBJECT_INFO:
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_HandleWaitObjectInfo((system_profiler_wait_object_info*)buffer);
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break;
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default:
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printf("unsupported event type %lu, size: %lu\n", event, size);
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return B_BAD_DATA;
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break;
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}
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return B_OK;
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}
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void
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ModelLoader::_HandleTeamAdded(system_profiler_team_added* event)
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{
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if (fModel->AddTeam(event, fLastEventTime) == NULL)
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throw std::bad_alloc();
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}
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void
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ModelLoader::_HandleTeamRemoved(system_profiler_team_removed* event)
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{
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if (Model::Team* team = fModel->TeamByID(event->team))
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team->SetDeletionTime(fLastEventTime);
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else
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printf("Removed event for unknown team: %ld\n", event->team);
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}
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void
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ModelLoader::_HandleTeamExec(system_profiler_team_exec* event)
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{
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// TODO:...
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}
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void
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ModelLoader::_HandleThreadAdded(system_profiler_thread_added* event)
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{
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if (_AddThread(event) == NULL)
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throw std::bad_alloc();
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}
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void
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ModelLoader::_HandleThreadRemoved(system_profiler_thread_removed* event)
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{
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if (Model::Thread* thread = fModel->ThreadByID(event->thread))
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thread->SetDeletionTime(fLastEventTime);
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else
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printf("Removed event for unknown team: %ld\n", event->thread);
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}
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void
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ModelLoader::_HandleThreadScheduled(system_profiler_thread_scheduled* event)
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{
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_UpdateLastEventTime(event->time);
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ThreadInfo* thread = fThreads.Lookup(event->thread);
|
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if (thread == NULL) {
|
||||
printf("Schedule event for unknown thread: %ld\n", event->thread);
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||||
return;
|
||||
}
|
||||
|
||||
bigtime_t diffTime = fLastEventTime - thread->lastTime;
|
||||
|
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if (thread->state == READY) {
|
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// thread scheduled after having been woken up
|
||||
thread->thread->AddLatency(diffTime);
|
||||
} else if (thread->state == PREEMPTED) {
|
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// thread scheduled after having been preempted before
|
||||
thread->thread->AddRerun(diffTime);
|
||||
}
|
||||
|
||||
if (thread->state == STILL_RUNNING) {
|
||||
// Thread was running and continues to run.
|
||||
thread->state = RUNNING;
|
||||
}
|
||||
|
||||
if (thread->state != RUNNING) {
|
||||
thread->lastTime = fLastEventTime;
|
||||
thread->state = RUNNING;
|
||||
}
|
||||
|
||||
// unscheduled thread
|
||||
|
||||
if (event->thread == event->previous_thread)
|
||||
return;
|
||||
|
||||
thread = fThreads.Lookup(event->previous_thread);
|
||||
if (thread == NULL) {
|
||||
printf("Schedule event for unknown previous thread: %ld\n",
|
||||
event->previous_thread);
|
||||
return;
|
||||
}
|
||||
|
||||
diffTime = fLastEventTime - thread->lastTime;
|
||||
|
||||
if (thread->state == STILL_RUNNING) {
|
||||
// thread preempted
|
||||
thread->thread->AddPreemption(diffTime);
|
||||
thread->thread->AddRun(diffTime);
|
||||
|
||||
thread->lastTime = fLastEventTime;
|
||||
thread->state = PREEMPTED;
|
||||
} else if (thread->state == RUNNING) {
|
||||
// thread starts waiting (it hadn't been added to the run
|
||||
// queue before being unscheduled)
|
||||
thread->thread->AddRun(diffTime);
|
||||
|
||||
if (event->previous_thread_state == B_THREAD_WAITING) {
|
||||
addr_t waitObject = event->previous_thread_wait_object;
|
||||
switch (event->previous_thread_wait_object_type) {
|
||||
case THREAD_BLOCK_TYPE_SNOOZE:
|
||||
case THREAD_BLOCK_TYPE_SIGNAL:
|
||||
waitObject = 0;
|
||||
break;
|
||||
case THREAD_BLOCK_TYPE_SEMAPHORE:
|
||||
case THREAD_BLOCK_TYPE_CONDITION_VARIABLE:
|
||||
case THREAD_BLOCK_TYPE_MUTEX:
|
||||
case THREAD_BLOCK_TYPE_RW_LOCK:
|
||||
case THREAD_BLOCK_TYPE_OTHER:
|
||||
default:
|
||||
break;
|
||||
}
|
||||
|
||||
_AddThreadWaitObject(thread,
|
||||
event->previous_thread_wait_object_type, waitObject);
|
||||
}
|
||||
|
||||
thread->lastTime = fLastEventTime;
|
||||
thread->state = WAITING;
|
||||
} else if (thread->state == UNKNOWN) {
|
||||
uint32 threadState = event->previous_thread_state;
|
||||
if (threadState == B_THREAD_WAITING
|
||||
|| threadState == B_THREAD_SUSPENDED) {
|
||||
thread->lastTime = fLastEventTime;
|
||||
thread->state = WAITING;
|
||||
} else if (threadState == B_THREAD_READY) {
|
||||
thread->lastTime = fLastEventTime;
|
||||
thread->state = PREEMPTED;
|
||||
}
|
||||
}
|
||||
}
|
||||
|
||||
|
||||
void
|
||||
ModelLoader::_HandleThreadEnqueuedInRunQueue(
|
||||
thread_enqueued_in_run_queue* event)
|
||||
{
|
||||
_UpdateLastEventTime(event->time);
|
||||
|
||||
ThreadInfo* thread = fThreads.Lookup(event->thread);
|
||||
if (thread == NULL) {
|
||||
printf("Enqueued in run queue event for unknown thread: %ld\n",
|
||||
event->thread);
|
||||
return;
|
||||
}
|
||||
|
||||
if (thread->state == RUNNING || thread->state == STILL_RUNNING) {
|
||||
// Thread was running and is reentered into the run queue. This
|
||||
// is done by the scheduler, if the thread remains ready.
|
||||
thread->state = STILL_RUNNING;
|
||||
} else {
|
||||
// Thread was waiting and is ready now.
|
||||
bigtime_t diffTime = fLastEventTime - thread->lastTime;
|
||||
if (thread->waitObject != NULL) {
|
||||
thread->waitObject->AddWait(diffTime);
|
||||
thread->waitObject = NULL;
|
||||
thread->thread->AddWait(diffTime);
|
||||
} else if (thread->state != UNKNOWN)
|
||||
thread->thread->AddUnspecifiedWait(diffTime);
|
||||
|
||||
thread->lastTime = fLastEventTime;
|
||||
thread->state = READY;
|
||||
}
|
||||
}
|
||||
|
||||
|
||||
void
|
||||
ModelLoader::_HandleThreadRemovedFromRunQueue(
|
||||
thread_removed_from_run_queue* event)
|
||||
{
|
||||
_UpdateLastEventTime(event->time);
|
||||
|
||||
ThreadInfo* thread = fThreads.Lookup(event->thread);
|
||||
if (thread == NULL) {
|
||||
printf("Removed from run queue event for unknown thread: %ld\n",
|
||||
event->thread);
|
||||
return;
|
||||
}
|
||||
|
||||
// This really only happens when the thread priority is changed
|
||||
// while the thread is ready.
|
||||
|
||||
bigtime_t diffTime = fLastEventTime - thread->lastTime;
|
||||
if (thread->state == RUNNING) {
|
||||
// This should never happen.
|
||||
thread->thread->AddRun(diffTime);
|
||||
} else if (thread->state == READY || thread->state == PREEMPTED) {
|
||||
// Not really correct, but the case is rare and we keep it
|
||||
// simple.
|
||||
thread->thread->AddUnspecifiedWait(diffTime);
|
||||
}
|
||||
|
||||
thread->lastTime = fLastEventTime;
|
||||
thread->state = WAITING;
|
||||
}
|
||||
|
||||
|
||||
void
|
||||
ModelLoader::_HandleWaitObjectInfo(system_profiler_wait_object_info* event)
|
||||
{
|
||||
if (fModel->AddWaitObject(event, NULL) == NULL)
|
||||
throw std::bad_alloc();
|
||||
}
|
||||
|
||||
|
||||
ModelLoader::ThreadInfo*
|
||||
ModelLoader::_AddThread(system_profiler_thread_added* event)
|
||||
{
|
||||
// do we know the thread already?
|
||||
ThreadInfo* info = fThreads.Lookup(event->thread);
|
||||
if (info != NULL) {
|
||||
// TODO: ?
|
||||
return info;
|
||||
}
|
||||
|
||||
// add the thread to the model
|
||||
Model::Thread* thread = fModel->AddThread(event, fLastEventTime);
|
||||
if (thread == NULL)
|
||||
return NULL;
|
||||
|
||||
// create and add a ThreadInfo
|
||||
info = new(std::nothrow) ThreadInfo(thread);
|
||||
if (info == NULL)
|
||||
return NULL;
|
||||
|
||||
fThreads.Insert(info);
|
||||
|
||||
return info;
|
||||
}
|
||||
|
||||
|
||||
void
|
||||
ModelLoader::_AddThreadWaitObject(ThreadInfo* thread, uint32 type,
|
||||
addr_t object)
|
||||
{
|
||||
Model::WaitObjectGroup* waitObjectGroup
|
||||
= fModel->WaitObjectGroupFor(type, object);
|
||||
if (waitObjectGroup == NULL) {
|
||||
// The algorithm should prevent this case.
|
||||
printf("ModelLoader::_AddThreadWaitObject(): Unknown wait object: type: %lu, "
|
||||
"object: %#lx\n", type, object);
|
||||
return;
|
||||
}
|
||||
|
||||
Model::WaitObject* waitObject = waitObjectGroup->MostRecentWaitObject();
|
||||
|
||||
Model::ThreadWaitObjectGroup* threadWaitObjectGroup
|
||||
= fModel->ThreadWaitObjectGroupFor(thread->ID(), type, object);
|
||||
|
||||
if (threadWaitObjectGroup == NULL
|
||||
|| threadWaitObjectGroup->MostRecentWaitObject() != waitObject) {
|
||||
Model::ThreadWaitObject* threadWaitObject
|
||||
= fModel->AddThreadWaitObject(thread->ID(), waitObject,
|
||||
&threadWaitObjectGroup);
|
||||
if (threadWaitObject == NULL)
|
||||
throw std::bad_alloc();
|
||||
}
|
||||
|
||||
thread->waitObject = threadWaitObjectGroup->MostRecentThreadWaitObject();
|
||||
}
|
||||
Reference in New Issue
Block a user