mirror of
https://github.com/hrydgard/ppsspp.git
synced 2024-11-23 21:39:52 +00:00
502 lines
11 KiB
C++
502 lines
11 KiB
C++
// Copyright (C) 2003 Dolphin Project.
|
|
|
|
// This program is free software: you can redistribute it and/or modify
|
|
// it under the terms of the GNU General Public License as published by
|
|
// the Free Software Foundation, version 2.0 or later versions.
|
|
|
|
// This program 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 2.0 for more details.
|
|
|
|
// A copy of the GPL 2.0 should have been included with the program.
|
|
// If not, see http://www.gnu.org/licenses/
|
|
|
|
// Official SVN repository and contact information can be found at
|
|
// http://code.google.com/p/dolphin-emu/
|
|
|
|
#ifndef _POINTERWRAP_H_
|
|
#define _POINTERWRAP_H_
|
|
|
|
// Extremely simple serialization framework.
|
|
|
|
// (mis)-features:
|
|
// + Super fast
|
|
// + Very simple
|
|
// + Same code is used for serialization and deserializaition (in most cases)
|
|
// - Zero backwards/forwards compatibility
|
|
// - Serialization code for anything complex has to be manually written.
|
|
|
|
#include <map>
|
|
#include <vector>
|
|
#include <deque>
|
|
#include <string>
|
|
#include <list>
|
|
#include <set>
|
|
|
|
#include "Common.h"
|
|
#include "FileUtil.h"
|
|
|
|
template <class T>
|
|
struct LinkedListItem : public T
|
|
{
|
|
LinkedListItem<T> *next;
|
|
};
|
|
|
|
// Wrapper class
|
|
class PointerWrap
|
|
{
|
|
public:
|
|
enum Mode {
|
|
MODE_READ = 1, // load
|
|
MODE_WRITE, // save
|
|
MODE_MEASURE, // calculate size
|
|
MODE_VERIFY, // compare
|
|
};
|
|
|
|
u8 **ptr;
|
|
Mode mode;
|
|
|
|
public:
|
|
PointerWrap(u8 **ptr_, Mode mode_) : ptr(ptr_), mode(mode_) {}
|
|
PointerWrap(unsigned char **ptr_, int mode_) : ptr((u8**)ptr_), mode((Mode)mode_) {}
|
|
|
|
void SetMode(Mode mode_) {mode = mode_;}
|
|
Mode GetMode() const {return mode;}
|
|
u8 **GetPPtr() {return ptr;}
|
|
|
|
void DoVoid(void *data, int size)
|
|
{
|
|
switch (mode) {
|
|
case MODE_READ: memcpy(data, *ptr, size); break;
|
|
case MODE_WRITE: memcpy(*ptr, data, size); break;
|
|
case MODE_MEASURE: break; // MODE_MEASURE - don't need to do anything
|
|
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;
|
|
default: break; // throw an error?
|
|
}
|
|
(*ptr) += size;
|
|
}
|
|
|
|
template<class T>
|
|
void Do(std::map<unsigned int, T> &x)
|
|
{
|
|
unsigned int number = (unsigned int)x.size();
|
|
Do(number);
|
|
switch (mode) {
|
|
case MODE_READ:
|
|
{
|
|
x.clear();
|
|
while (number > 0)
|
|
{
|
|
unsigned int first = 0;
|
|
Do(first);
|
|
T second;
|
|
Do(second);
|
|
x[first] = second;
|
|
--number;
|
|
}
|
|
}
|
|
break;
|
|
case MODE_WRITE:
|
|
case MODE_MEASURE:
|
|
case MODE_VERIFY:
|
|
{
|
|
typename std::map<unsigned int, T>::iterator itr = x.begin();
|
|
while (number > 0)
|
|
{
|
|
Do(itr->first);
|
|
Do(itr->second);
|
|
--number;
|
|
++itr;
|
|
}
|
|
}
|
|
break;
|
|
}
|
|
}
|
|
|
|
template<class K, class T>
|
|
void Do(std::multimap<K, T> &x)
|
|
{
|
|
unsigned int number = (unsigned int)x.size();
|
|
Do(number);
|
|
switch (mode) {
|
|
case MODE_READ:
|
|
{
|
|
x.clear();
|
|
while (number > 0)
|
|
{
|
|
K first;
|
|
Do(first);
|
|
T second;
|
|
Do(second);
|
|
x.insert(std::make_pair(first, second));
|
|
--number;
|
|
}
|
|
}
|
|
break;
|
|
case MODE_WRITE:
|
|
case MODE_MEASURE:
|
|
case MODE_VERIFY:
|
|
{
|
|
typename std::multimap<K, T>::iterator itr = x.begin();
|
|
while (number > 0)
|
|
{
|
|
Do(itr->first);
|
|
Do(itr->second);
|
|
--number;
|
|
++itr;
|
|
}
|
|
}
|
|
break;
|
|
}
|
|
}
|
|
|
|
// Store vectors.
|
|
template<class T>
|
|
void Do(std::vector<T> &x)
|
|
{
|
|
u32 vec_size = (u32)x.size();
|
|
Do(vec_size);
|
|
x.resize(vec_size);
|
|
DoArray(&x[0], vec_size);
|
|
}
|
|
|
|
// Store deques.
|
|
template<class T>
|
|
void Do(std::deque<T> &x)
|
|
{
|
|
u32 deq_size = (u32)x.size();
|
|
Do(deq_size);
|
|
x.resize(deq_size);
|
|
u32 i;
|
|
for(i = 0; i < deq_size; i++)
|
|
DoVoid(&x[i],sizeof(T));
|
|
}
|
|
|
|
// Store STL lists.
|
|
template<class T>
|
|
void Do(std::list<T> &x)
|
|
{
|
|
T dv;
|
|
Do(x, dv);
|
|
}
|
|
|
|
template<class T>
|
|
void Do(std::list<T> &x, T &default_val)
|
|
{
|
|
u32 list_size = (u32)x.size();
|
|
Do(list_size);
|
|
x.resize(list_size, default_val);
|
|
|
|
typename std::list<T>::iterator itr, end;
|
|
for (itr = x.begin(), end = x.end(); itr != end; ++itr)
|
|
Do(*itr);
|
|
}
|
|
|
|
// Store STL sets.
|
|
template <class T>
|
|
void Do(std::set<T> &x)
|
|
{
|
|
unsigned int number = (unsigned int)x.size();
|
|
Do(number);
|
|
|
|
switch (mode)
|
|
{
|
|
case MODE_READ:
|
|
{
|
|
x.clear();
|
|
while (number-- > 0)
|
|
{
|
|
T it;
|
|
Do(it);
|
|
x.insert(it);
|
|
}
|
|
}
|
|
break;
|
|
case MODE_WRITE:
|
|
case MODE_MEASURE:
|
|
case MODE_VERIFY:
|
|
{
|
|
typename std::set<T>::iterator itr = x.begin();
|
|
while (number-- > 0)
|
|
Do(*itr++);
|
|
}
|
|
break;
|
|
|
|
default:
|
|
ERROR_LOG(COMMON, "Savestate error: invalid mode %d.", mode);
|
|
}
|
|
}
|
|
|
|
// Store strings.
|
|
void Do(std::string &x)
|
|
{
|
|
int stringLen = (int)x.length() + 1;
|
|
Do(stringLen);
|
|
|
|
switch (mode) {
|
|
case MODE_READ: x = (char*)*ptr; break;
|
|
case MODE_WRITE: memcpy(*ptr, x.c_str(), stringLen); break;
|
|
case MODE_MEASURE: break;
|
|
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;
|
|
}
|
|
(*ptr) += stringLen;
|
|
}
|
|
|
|
void Do(std::wstring &x)
|
|
{
|
|
int stringLen = sizeof(wchar_t)*((int)x.length() + 1);
|
|
Do(stringLen);
|
|
|
|
switch (mode) {
|
|
case MODE_READ: x = (wchar_t*)*ptr; break;
|
|
case MODE_WRITE: memcpy(*ptr, x.c_str(), stringLen); break;
|
|
case MODE_MEASURE: break;
|
|
case MODE_VERIFY: _dbg_assert_msg_(COMMON, x == (wchar_t*)*ptr, "Savestate verification failure: \"%s\" != \"%s\" (at %p).\n", x.c_str(), (wchar_t*)*ptr, ptr); break;
|
|
}
|
|
(*ptr) += stringLen;
|
|
}
|
|
|
|
template<class T>
|
|
void DoArray(T *x, int count) {
|
|
DoVoid((void *)x, sizeof(T) * count);
|
|
}
|
|
|
|
template<class T>
|
|
void Do(T &x) {
|
|
DoVoid((void *)&x, sizeof(x));
|
|
}
|
|
|
|
template<class T>
|
|
void DoPointer(T* &x, T*const base) {
|
|
// pointers can be more than 2^31 apart, but you're using this function wrong if you need that much range
|
|
s32 offset = x - base;
|
|
Do(offset);
|
|
if (mode == MODE_READ)
|
|
x = base + offset;
|
|
}
|
|
|
|
template<class T, LinkedListItem<T>* (*TNew)(), void (*TFree)(LinkedListItem<T>*), void (*TDo)(PointerWrap&, T*)>
|
|
void DoLinkedList(LinkedListItem<T>*& list_start, LinkedListItem<T>** list_end=0)
|
|
{
|
|
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);
|
|
mode = PointerWrap::MODE_MEASURE;
|
|
}
|
|
}
|
|
};
|
|
|
|
|
|
class CChunkFileReader
|
|
{
|
|
public:
|
|
// Load file template
|
|
template<class T>
|
|
static bool Load(const std::string& _rFilename, int _Revision, T& _class)
|
|
{
|
|
INFO_LOG(COMMON, "ChunkReader: Loading %s" , _rFilename.c_str());
|
|
|
|
if (!File::Exists(_rFilename))
|
|
return false;
|
|
|
|
// Check file size
|
|
const u64 fileSize = File::GetSize(_rFilename);
|
|
static const u64 headerSize = sizeof(SChunkHeader);
|
|
if (fileSize < headerSize)
|
|
{
|
|
ERROR_LOG(COMMON,"ChunkReader: File too small");
|
|
return false;
|
|
}
|
|
|
|
File::IOFile pFile(_rFilename, "rb");
|
|
if (!pFile)
|
|
{
|
|
ERROR_LOG(COMMON,"ChunkReader: Can't open file for reading");
|
|
return false;
|
|
}
|
|
|
|
// read the header
|
|
SChunkHeader header;
|
|
if (!pFile.ReadArray(&header, 1))
|
|
{
|
|
ERROR_LOG(COMMON,"ChunkReader: Bad header size");
|
|
return false;
|
|
}
|
|
|
|
// Check revision
|
|
if (header.Revision != _Revision)
|
|
{
|
|
ERROR_LOG(COMMON,"ChunkReader: Wrong file revision, got %d expected %d",
|
|
header.Revision, _Revision);
|
|
return false;
|
|
}
|
|
|
|
// get size
|
|
const int sz = (int)(fileSize - headerSize);
|
|
if (header.ExpectedSize != sz)
|
|
{
|
|
ERROR_LOG(COMMON,"ChunkReader: Bad file size, got %d expected %d",
|
|
sz, header.ExpectedSize);
|
|
return false;
|
|
}
|
|
|
|
// read the state
|
|
u8* buffer = new u8[sz];
|
|
if (!pFile.ReadBytes(buffer, sz))
|
|
{
|
|
ERROR_LOG(COMMON,"ChunkReader: Error reading file");
|
|
return false;
|
|
}
|
|
|
|
u8 *ptr = buffer;
|
|
PointerWrap p(&ptr, PointerWrap::MODE_READ);
|
|
_class.DoState(p);
|
|
delete[] buffer;
|
|
|
|
INFO_LOG(COMMON, "ChunkReader: Done loading %s" , _rFilename.c_str());
|
|
return true;
|
|
}
|
|
|
|
// Save file template
|
|
template<class T>
|
|
static bool Save(const std::string& _rFilename, int _Revision, T& _class)
|
|
{
|
|
INFO_LOG(COMMON, "ChunkReader: Writing %s" , _rFilename.c_str());
|
|
File::IOFile pFile(_rFilename, "wb");
|
|
if (!pFile)
|
|
{
|
|
ERROR_LOG(COMMON,"ChunkReader: Error opening file for write");
|
|
return false;
|
|
}
|
|
|
|
// Get data
|
|
u8 *ptr = 0;
|
|
PointerWrap p(&ptr, PointerWrap::MODE_MEASURE);
|
|
_class.DoState(p);
|
|
size_t const sz = (size_t)ptr;
|
|
std::vector<u8> buffer(sz);
|
|
ptr = &buffer[0];
|
|
p.SetMode(PointerWrap::MODE_WRITE);
|
|
_class.DoState(p);
|
|
|
|
// Create header
|
|
SChunkHeader header;
|
|
header.Compress = 0;
|
|
header.Revision = _Revision;
|
|
header.ExpectedSize = (int)sz;
|
|
|
|
// Write to file
|
|
if (!pFile.WriteArray(&header, 1))
|
|
{
|
|
ERROR_LOG(COMMON,"ChunkReader: Failed writing header");
|
|
return false;
|
|
}
|
|
|
|
if (!pFile.WriteBytes(&buffer[0], sz))
|
|
{
|
|
ERROR_LOG(COMMON,"ChunkReader: Failed writing data");
|
|
return false;
|
|
}
|
|
|
|
INFO_LOG(COMMON,"ChunkReader: Done writing %s",
|
|
_rFilename.c_str());
|
|
return true;
|
|
}
|
|
|
|
template <class T>
|
|
static bool Verify(T& _class)
|
|
{
|
|
u8 *ptr = 0;
|
|
|
|
// Step 1: Measure the space required.
|
|
PointerWrap p(&ptr, PointerWrap::MODE_MEASURE);
|
|
_class.DoState(p);
|
|
size_t const sz = (size_t)ptr;
|
|
std::vector<u8> buffer(sz);
|
|
|
|
// Step 2: Dump the state.
|
|
ptr = &buffer[0];
|
|
p.SetMode(PointerWrap::MODE_WRITE);
|
|
_class.DoState(p);
|
|
|
|
// Step 3: Verify the state.
|
|
ptr = &buffer[0];
|
|
p.SetMode(PointerWrap::MODE_VERIFY);
|
|
_class.DoState(p);
|
|
|
|
return true;
|
|
}
|
|
|
|
private:
|
|
struct SChunkHeader
|
|
{
|
|
int Revision;
|
|
int Compress;
|
|
int ExpectedSize;
|
|
};
|
|
};
|
|
|
|
#endif // _POINTERWRAP_H_
|