629 lines
17 KiB
C++
629 lines
17 KiB
C++
// Copyright (C) 2003 Dolphin Project.
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// This program is free software: you can redistribute it and/or modify
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// it under the terms of the GNU General Public License as published by
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// the Free Software Foundation, version 2.0 or later versions.
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// This program is distributed in the hope that it will be useful,
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// but WITHOUT ANY WARRANTY; without even the implied warranty of
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// MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
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// GNU General Public License 2.0 for more details.
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// A copy of the GPL 2.0 should have been included with the program.
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// If not, see http://www.gnu.org/licenses/
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// Official SVN repository and contact information can be found at
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// http://code.google.com/p/dolphin-emu/
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#pragma once
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// Extremely simple serialization framework.
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// (mis)-features:
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// + Super fast
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// + Very simple
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// + Same code is used for serialization and deserializaition (in most cases)
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// - Zero backwards/forwards compatibility
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// - Serialization code for anything complex has to be manually written.
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#include <map>
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#include <vector>
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#include <deque>
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#include <string>
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#include <list>
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#include <set>
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#include <type_traits>
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#include "common/common.h"
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#include "common/file_util.h"
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template <class T>
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struct LinkedListItem : public T
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{
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LinkedListItem<T> *next;
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};
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class PointerWrap;
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class PointerWrapSection
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{
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public:
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PointerWrapSection(PointerWrap &p, int ver, const char *title) : p_(p), ver_(ver), title_(title) {
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}
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~PointerWrapSection();
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bool operator == (const int &v) const { return ver_ == v; }
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bool operator != (const int &v) const { return ver_ != v; }
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bool operator <= (const int &v) const { return ver_ <= v; }
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bool operator >= (const int &v) const { return ver_ >= v; }
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bool operator < (const int &v) const { return ver_ < v; }
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bool operator > (const int &v) const { return ver_ > v; }
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operator bool() const {
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return ver_ > 0;
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}
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private:
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PointerWrap &p_;
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int ver_;
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const char *title_;
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};
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// Wrapper class
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class PointerWrap
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{
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// This makes it a compile error if you forget to define DoState() on non-POD.
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// Which also can be a problem, for example struct tm is non-POD on linux, for whatever reason...
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#ifdef _MSC_VER
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template<typename T, bool isPOD = std::is_pod<T>::value, bool isPointer = std::is_pointer<T>::value>
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#else
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template<typename T, bool isPOD = __is_pod(T), bool isPointer = std::is_pointer<T>::value>
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#endif
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struct DoHelper
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{
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static void DoArray(PointerWrap *p, T *x, int count)
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{
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for (int i = 0; i < count; ++i)
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p->Do(x[i]);
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}
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static void Do(PointerWrap *p, T &x)
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{
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p->DoClass(x);
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}
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};
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template<typename T>
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struct DoHelper<T, true, false>
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{
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static void DoArray(PointerWrap *p, T *x, int count)
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{
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p->DoVoid((void *)x, sizeof(T) * count);
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}
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static void Do(PointerWrap *p, T &x)
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{
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p->DoVoid((void *)&x, sizeof(x));
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}
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};
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public:
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enum Mode {
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MODE_READ = 1, // load
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MODE_WRITE, // save
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MODE_MEASURE, // calculate size
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MODE_VERIFY, // compare
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};
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enum Error {
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ERROR_NONE = 0,
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ERROR_WARNING = 1,
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ERROR_FAILURE = 2,
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};
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u8 **ptr;
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Mode mode;
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Error error;
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public:
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PointerWrap(u8 **ptr_, Mode mode_) : ptr(ptr_), mode(mode_), error(ERROR_NONE) {}
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PointerWrap(unsigned char **ptr_, int mode_) : ptr((u8**)ptr_), mode((Mode)mode_), error(ERROR_NONE) {}
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PointerWrapSection Section(const char *title, int ver) {
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return Section(title, ver, ver);
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}
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// The returned object can be compared against the version that was loaded.
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// This can be used to support versions as old as minVer.
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// Version = 0 means the section was not found.
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PointerWrapSection Section(const char *title, int minVer, int ver) {
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char marker[16] = {0};
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int foundVersion = ver;
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strncpy(marker, title, sizeof(marker));
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if (!ExpectVoid(marker, sizeof(marker)))
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{
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// Might be before we added name markers for safety.
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if (foundVersion == 1 && ExpectVoid(&foundVersion, sizeof(foundVersion)))
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DoMarker(title);
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// Wasn't found, but maybe we can still load the state.
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else
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foundVersion = 0;
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}
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else
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Do(foundVersion);
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if (error == ERROR_FAILURE || foundVersion < minVer || foundVersion > ver) {
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WARN_LOG(COMMON, "Savestate failure: wrong version %d found for %s", foundVersion, title);
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SetError(ERROR_FAILURE);
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return PointerWrapSection(*this, -1, title);
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}
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return PointerWrapSection(*this, foundVersion, title);
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}
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void SetMode(Mode mode_) {mode = mode_;}
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Mode GetMode() const {return mode;}
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u8 **GetPPtr() {return ptr;}
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void SetError(Error error_)
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{
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if (error < error_)
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error = error_;
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if (error > ERROR_WARNING)
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mode = PointerWrap::MODE_MEASURE;
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}
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bool ExpectVoid(void *data, int size)
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{
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switch (mode) {
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case MODE_READ: if (memcmp(data, *ptr, size) != 0) return false; break;
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case MODE_WRITE: memcpy(*ptr, data, size); break;
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case MODE_MEASURE: break; // MODE_MEASURE - don't need to do anything
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case MODE_VERIFY: for(int i = 0; i < size; i++) _dbg_assert_msg_(COMMON, ((u8*)data)[i] == (*ptr)[i], "Savestate verification failure: %d (0x%X) (at %p) != %d (0x%X) (at %p).\n", ((u8*)data)[i], ((u8*)data)[i], &((u8*)data)[i], (*ptr)[i], (*ptr)[i], &(*ptr)[i]); break;
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default: break; // throw an error?
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}
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(*ptr) += size;
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return true;
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}
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void DoVoid(void *data, int size)
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{
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switch (mode) {
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case MODE_READ: memcpy(data, *ptr, size); break;
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case MODE_WRITE: memcpy(*ptr, data, size); break;
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case MODE_MEASURE: break; // MODE_MEASURE - don't need to do anything
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case MODE_VERIFY: for(int i = 0; i < size; i++) _dbg_assert_msg_(COMMON, ((u8*)data)[i] == (*ptr)[i], "Savestate verification failure: %d (0x%X) (at %p) != %d (0x%X) (at %p).\n", ((u8*)data)[i], ((u8*)data)[i], &((u8*)data)[i], (*ptr)[i], (*ptr)[i], &(*ptr)[i]); break;
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default: break; // throw an error?
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}
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(*ptr) += size;
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}
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template<class K, class T>
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void Do(std::map<K, T *> &x)
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{
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if (mode == MODE_READ)
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{
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for (auto it = x.begin(), end = x.end(); it != end; ++it)
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{
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if (it->second != NULL)
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delete it->second;
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}
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}
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T *dv = NULL;
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DoMap(x, dv);
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}
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template<class K, class T>
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void Do(std::map<K, T> &x)
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{
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T dv = T();
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DoMap(x, dv);
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}
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template<class K, class T>
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void DoMap(std::map<K, T> &x, T &default_val)
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{
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unsigned int number = (unsigned int)x.size();
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Do(number);
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switch (mode) {
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case MODE_READ:
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{
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x.clear();
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while (number > 0)
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{
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K first = K();
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Do(first);
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T second = default_val;
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Do(second);
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x[first] = second;
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--number;
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}
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}
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break;
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case MODE_WRITE:
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case MODE_MEASURE:
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case MODE_VERIFY:
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{
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typename std::map<K, T>::iterator itr = x.begin();
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while (number > 0)
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{
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K first = itr->first;
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Do(first);
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Do(itr->second);
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--number;
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++itr;
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}
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}
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break;
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}
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}
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template<class K, class T>
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void Do(std::multimap<K, T *> &x)
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{
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if (mode == MODE_READ)
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{
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for (auto it = x.begin(), end = x.end(); it != end; ++it)
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{
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if (it->second != NULL)
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delete it->second;
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}
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}
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T *dv = NULL;
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DoMultimap(x, dv);
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}
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template<class K, class T>
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void Do(std::multimap<K, T> &x)
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{
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T dv = T();
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DoMultimap(x, dv);
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}
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template<class K, class T>
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void DoMultimap(std::multimap<K, T> &x, T &default_val)
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{
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unsigned int number = (unsigned int)x.size();
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Do(number);
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switch (mode) {
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case MODE_READ:
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{
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x.clear();
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while (number > 0)
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{
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K first = K();
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Do(first);
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T second = default_val;
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Do(second);
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x.insert(std::make_pair(first, second));
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--number;
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}
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}
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break;
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case MODE_WRITE:
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case MODE_MEASURE:
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case MODE_VERIFY:
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{
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typename std::multimap<K, T>::iterator itr = x.begin();
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while (number > 0)
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{
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Do(itr->first);
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Do(itr->second);
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--number;
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++itr;
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}
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}
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break;
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}
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}
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// Store vectors.
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template<class T>
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void Do(std::vector<T *> &x)
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{
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T *dv = NULL;
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DoVector(x, dv);
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}
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template<class T>
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void Do(std::vector<T> &x)
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{
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T dv = T();
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DoVector(x, dv);
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}
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template<class T>
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void DoPOD(std::vector<T> &x)
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{
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T dv = T();
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DoVectorPOD(x, dv);
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}
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template<class T>
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void Do(std::vector<T> &x, T &default_val)
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{
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DoVector(x, default_val);
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}
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template<class T>
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void DoVector(std::vector<T> &x, T &default_val)
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{
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u32 vec_size = (u32)x.size();
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Do(vec_size);
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x.resize(vec_size, default_val);
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if (vec_size > 0)
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DoArray(&x[0], vec_size);
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}
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template<class T>
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void DoVectorPOD(std::vector<T> &x, T &default_val)
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{
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u32 vec_size = (u32)x.size();
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Do(vec_size);
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x.resize(vec_size, default_val);
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if (vec_size > 0)
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DoArray(&x[0], vec_size);
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}
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// Store deques.
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template<class T>
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void Do(std::deque<T *> &x)
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{
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T *dv = NULL;
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DoDeque(x, dv);
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}
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template<class T>
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void Do(std::deque<T> &x)
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{
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T dv = T();
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DoDeque(x, dv);
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}
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template<class T>
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void DoDeque(std::deque<T> &x, T &default_val)
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{
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u32 deq_size = (u32)x.size();
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Do(deq_size);
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x.resize(deq_size, default_val);
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u32 i;
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for(i = 0; i < deq_size; i++)
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Do(x[i]);
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}
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// Store STL lists.
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template<class T>
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void Do(std::list<T *> &x)
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{
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T *dv = NULL;
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Do(x, dv);
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}
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template<class T>
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void Do(std::list<T> &x)
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{
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T dv = T();
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DoList(x, dv);
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}
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template<class T>
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void Do(std::list<T> &x, T &default_val)
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{
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DoList(x, default_val);
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}
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template<class T>
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void DoList(std::list<T> &x, T &default_val)
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{
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u32 list_size = (u32)x.size();
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Do(list_size);
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x.resize(list_size, default_val);
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typename std::list<T>::iterator itr, end;
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for (itr = x.begin(), end = x.end(); itr != end; ++itr)
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Do(*itr);
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}
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// Store STL sets.
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template <class T>
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void Do(std::set<T *> &x)
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{
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if (mode == MODE_READ)
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{
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for (auto it = x.begin(), end = x.end(); it != end; ++it)
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{
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if (*it != NULL)
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delete *it;
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}
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}
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DoSet(x);
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}
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template <class T>
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void Do(std::set<T> &x)
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{
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DoSet(x);
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}
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template <class T>
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void DoSet(std::set<T> &x)
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{
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unsigned int number = (unsigned int)x.size();
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Do(number);
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switch (mode)
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{
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case MODE_READ:
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{
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x.clear();
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while (number-- > 0)
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{
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T it = T();
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Do(it);
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x.insert(it);
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}
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}
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break;
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case MODE_WRITE:
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case MODE_MEASURE:
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case MODE_VERIFY:
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{
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typename std::set<T>::iterator itr = x.begin();
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while (number-- > 0)
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Do(*itr++);
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}
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break;
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default:
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ERROR_LOG(COMMON, "Savestate error: invalid mode %d.", mode);
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}
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}
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// Store strings.
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void Do(std::string &x)
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{
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int stringLen = (int)x.length() + 1;
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Do(stringLen);
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switch (mode) {
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case MODE_READ: x = (char*)*ptr; break;
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case MODE_WRITE: memcpy(*ptr, x.c_str(), stringLen); break;
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case MODE_MEASURE: break;
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case MODE_VERIFY: _dbg_assert_msg_(COMMON, !strcmp(x.c_str(), (char*)*ptr), "Savestate verification failure: \"%s\" != \"%s\" (at %p).\n", x.c_str(), (char*)*ptr, ptr); break;
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}
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(*ptr) += stringLen;
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}
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void Do(std::wstring &x)
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{
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int stringLen = sizeof(wchar_t)*((int)x.length() + 1);
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Do(stringLen);
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switch (mode) {
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case MODE_READ: x = (wchar_t*)*ptr; break;
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case MODE_WRITE: memcpy(*ptr, x.c_str(), stringLen); break;
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case MODE_MEASURE: break;
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case MODE_VERIFY: _dbg_assert_msg_(COMMON, x == (wchar_t*)*ptr, "Savestate verification failure: \"%ls\" != \"%ls\" (at %p).\n", x.c_str(), (wchar_t*)*ptr, ptr); break;
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}
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(*ptr) += stringLen;
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}
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template<class T>
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void DoClass(T &x) {
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x.DoState(*this);
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}
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template<class T>
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void DoClass(T *&x) {
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if (mode == MODE_READ)
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{
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if (x != NULL)
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delete x;
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x = new T();
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}
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x->DoState(*this);
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}
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template<class T>
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void DoArray(T *x, int count) {
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DoHelper<T>::DoArray(this, x, count);
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}
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template<class T>
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void Do(T &x) {
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DoHelper<T>::Do(this, x);
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}
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template<class T>
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void DoPOD(T &x) {
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DoHelper<T>::Do(this, x);
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}
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template<class T>
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void DoPointer(T* &x, T*const base) {
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// pointers can be more than 2^31 apart, but you're using this function wrong if you need that much range
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s32 offset = x - base;
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Do(offset);
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if (mode == MODE_READ)
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x = base + offset;
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}
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template<class T, LinkedListItem<T>* (*TNew)(), void (*TFree)(LinkedListItem<T>*), void (*TDo)(PointerWrap&, T*)>
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void DoLinkedList(LinkedListItem<T>*& list_start, LinkedListItem<T>** list_end=0)
|
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{
|
|
LinkedListItem<T>* list_cur = list_start;
|
|
LinkedListItem<T>* prev = 0;
|
|
|
|
while (true)
|
|
{
|
|
u8 shouldExist = (list_cur ? 1 : 0);
|
|
Do(shouldExist);
|
|
if (shouldExist == 1)
|
|
{
|
|
LinkedListItem<T>* cur = list_cur ? list_cur : TNew();
|
|
TDo(*this, (T*)cur);
|
|
if (!list_cur)
|
|
{
|
|
if (mode == MODE_READ)
|
|
{
|
|
cur->next = 0;
|
|
list_cur = cur;
|
|
if (prev)
|
|
prev->next = cur;
|
|
else
|
|
list_start = cur;
|
|
}
|
|
else
|
|
{
|
|
TFree(cur);
|
|
continue;
|
|
}
|
|
}
|
|
}
|
|
else
|
|
{
|
|
if (mode == MODE_READ)
|
|
{
|
|
if (prev)
|
|
prev->next = 0;
|
|
if (list_end)
|
|
*list_end = prev;
|
|
if (list_cur)
|
|
{
|
|
if (list_start == list_cur)
|
|
list_start = 0;
|
|
do
|
|
{
|
|
LinkedListItem<T>* next = list_cur->next;
|
|
TFree(list_cur);
|
|
list_cur = next;
|
|
}
|
|
while (list_cur);
|
|
}
|
|
}
|
|
break;
|
|
}
|
|
prev = list_cur;
|
|
list_cur = list_cur->next;
|
|
}
|
|
}
|
|
|
|
void DoMarker(const char* prevName, u32 arbitraryNumber=0x42)
|
|
{
|
|
u32 cookie = arbitraryNumber;
|
|
Do(cookie);
|
|
if(mode == PointerWrap::MODE_READ && cookie != arbitraryNumber)
|
|
{
|
|
PanicAlertT("Error: After \"%s\", found %d (0x%X) instead of save marker %d (0x%X). Aborting savestate load...", prevName, cookie, cookie, arbitraryNumber, arbitraryNumber);
|
|
SetError(ERROR_FAILURE);
|
|
}
|
|
}
|
|
};
|
|
|
|
inline PointerWrapSection::~PointerWrapSection() {
|
|
if (ver_ > 0) {
|
|
p_.DoMarker(title_);
|
|
}
|
|
}
|