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PPU/LLVM: Remove lock in GetCompiledExecutableIfAvailable

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This should increase performance a lot in some case.
This commit is contained in:
Vincent Lejeune 2015-09-05 00:45:20 +02:00
parent 667cb64c29
commit ecb3d93918
2 changed files with 35 additions and 42 deletions
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54
rpcs3/Emu/Cell/PPULLVMRecompiler.cpp
View File

@ -254,7 +254,7 @@ RecompilationEngine::RecompilationEngine()
, m_last_cache_clear_time(std::chrono::high_resolution_clock::now())
, m_compiler(*this, CPUHybridDecoderRecompiler::ExecuteFunction, CPUHybridDecoderRecompiler::ExecuteTillReturn, CPUHybridDecoderRecompiler::PollStatus) {
FunctionCache = (Executable *)memory_helper::reserve_memory(VIRTUAL_INSTRUCTION_COUNT * sizeof(Executable));
FunctionCache = (ExecutableStorageType *)memory_helper::reserve_memory(VIRTUAL_INSTRUCTION_COUNT * sizeof(ExecutableStorageType));
// Each char can store 8 page status
FunctionCachePagesCommited = (char *)malloc(VIRTUAL_INSTRUCTION_COUNT / (8 * PAGE_SIZE));
memset(FunctionCachePagesCommited, 0, VIRTUAL_INSTRUCTION_COUNT / (8 * PAGE_SIZE));
@ -263,15 +263,15 @@ RecompilationEngine::RecompilationEngine()
}
RecompilationEngine::~RecompilationEngine() {
m_address_to_function.clear();
m_executable_storage.clear();
join();
memory_helper::free_reserved_memory(FunctionCache, VIRTUAL_INSTRUCTION_COUNT * sizeof(Executable));
memory_helper::free_reserved_memory(FunctionCache, VIRTUAL_INSTRUCTION_COUNT * sizeof(ExecutableStorageType));
free(FunctionCachePagesCommited);
}
bool RecompilationEngine::isAddressCommited(u32 address) const
{
size_t offset = address * sizeof(Executable);
size_t offset = address * sizeof(ExecutableStorageType);
size_t page = offset / 4096;
// Since bool is stored in char, the char index is page / 8 (or page >> 3)
// and we shr the value with the remaining bits (page & 7)
@ -280,7 +280,7 @@ bool RecompilationEngine::isAddressCommited(u32 address) const
void RecompilationEngine::commitAddress(u32 address)
{
size_t offset = address * sizeof(Executable);
size_t offset = address * sizeof(ExecutableStorageType);
size_t page = offset / 4096;
memory_helper::commit_page_memory((u8*)FunctionCache + page * 4096, 4096);
// Reverse of isAddressCommited : we set the (page & 7)th bit of (page / 8) th char
@ -288,20 +288,15 @@ void RecompilationEngine::commitAddress(u32 address)
FunctionCachePagesCommited[page >> 3] |= (1 << (page & 7));
}
const Executable RecompilationEngine::GetCompiledExecutableIfAvailable(u32 address)
const Executable RecompilationEngine::GetCompiledExecutableIfAvailable(u32 address) const
{
std::lock_guard<std::mutex> lock(m_address_to_function_lock);
if (!isAddressCommited(address / 4))
commitAddress(address / 4);
if (!Ini.LLVMExclusionRange.GetValue())
return FunctionCache[address / 4];
std::unordered_map<u32, ExecutableStorage>::iterator It = m_address_to_function.find(address);
if (It == m_address_to_function.end())
return nullptr;
u32 id = std::get<3>(It->second);
if (id >= Ini.LLVMMinId.GetValue() && id <= Ini.LLVMMaxId.GetValue())
u32 id = FunctionCache[address / 4].second;
if (Ini.LLVMExclusionRange.GetValue() &&
(id >= Ini.LLVMMinId.GetValue() && id <= Ini.LLVMMaxId.GetValue()))
return nullptr;
return std::get<0>(It->second);
return FunctionCache[address / 4].first;
}
void RecompilationEngine::NotifyBlockStart(u32 address) {
@ -464,26 +459,25 @@ void RecompilationEngine::CompileBlock(BlockEntry & block_entry) {
if (!AnalyseBlock(block_entry))
return;
Log() << "Compile: " << block_entry.ToString() << "\n";
const std::pair<Executable, llvm::ExecutionEngine *> &compileResult =
m_compiler.Compile(fmt::format("fn_0x%08X", block_entry.address), block_entry.address, block_entry.instructionCount);
// If entry doesn't exist, create it (using lock)
std::unordered_map<u32, ExecutableStorage>::iterator It = m_address_to_function.find(block_entry.address);
if (It == m_address_to_function.end())
{
std::lock_guard<std::mutex> lock(m_address_to_function_lock);
std::get<1>(m_address_to_function[block_entry.address]) = nullptr;
// We create a lock here so that data are properly stored at the end of the function.
/// Lock for accessing compiler
std::mutex local_mutex;
std::unique_lock<std::mutex> lock(local_mutex);
const std::pair<Executable, llvm::ExecutionEngine *> &compileResult =
m_compiler.Compile(fmt::format("fn_0x%08X", block_entry.address), block_entry.address, block_entry.instructionCount);
if (!isAddressCommited(block_entry.address / 4))
commitAddress(block_entry.address / 4);
}
std::get<1>(m_address_to_function[block_entry.address]) = std::unique_ptr<llvm::ExecutionEngine>(compileResult.second);
std::get<0>(m_address_to_function[block_entry.address]) = compileResult.first;
std::get<3>(m_address_to_function[block_entry.address]) = m_currentId;
Log() << "Associating " << (void*)(uint64_t)block_entry.address << " with ID " << m_currentId << "\n";
m_currentId++;
block_entry.is_compiled = true;
FunctionCache[block_entry.address / 4] = compileResult.first;
m_executable_storage.push_back(std::unique_ptr<llvm::ExecutionEngine>(compileResult.second));
Log() << "Associating " << (void*)(uint64_t)block_entry.address << " with ID " << m_currentId << "\n";
FunctionCache[block_entry.address / 4] = std::make_pair(compileResult.first, m_currentId);
m_currentId++;
block_entry.is_compiled = true;
}
}
std::shared_ptr<RecompilationEngine> RecompilationEngine::GetInstance() {

23
rpcs3/Emu/Cell/PPULLVMRecompiler.h
View File

@ -786,7 +786,7 @@ namespace ppu_recompiler_llvm {
* Get the executable for the specified address if a compiled version is
* available, otherwise returns nullptr.
**/
const Executable GetCompiledExecutableIfAvailable(u32 address);
const Executable GetCompiledExecutableIfAvailable(u32 address) const;
/// Notify the recompilation engine about a newly detected block start.
void NotifyBlockStart(u32 address);
@ -855,15 +855,16 @@ namespace ppu_recompiler_llvm {
/// Block table
std::unordered_map<u32, BlockEntry> m_block_table;
/// Lock for accessing m_address_to_function.
std::mutex m_address_to_function_lock;
int m_currentId;
// Store pointer to every compiled function/block.
// We need to map every instruction in PS3 Ram so it's a big table
// But a lot of it won't be accessed. Fortunatly virtual memory help here...
Executable *FunctionCache;
/// (function, id).
typedef std::pair<Executable, u32> ExecutableStorageType;
/// Virtual memory allocated array.
/// Store pointer to every compiled function/block and a unique Id.
/// We need to map every instruction in PS3 Ram so it's a big table
/// But a lot of it won't be accessed. Fortunatly virtual memory help here...
ExecutableStorageType* FunctionCache;
// Bitfield recording page status in FunctionCache reserved memory.
char *FunctionCachePagesCommited;
@ -871,10 +872,8 @@ namespace ppu_recompiler_llvm {
bool isAddressCommited(u32) const;
void commitAddress(u32);
/// (function, module containing function, times hit, id).
typedef std::tuple<Executable, std::unique_ptr<llvm::ExecutionEngine>, u32, u32> ExecutableStorage;
/// Address to ordinal cahce. Key is address.
std::unordered_map<u32, ExecutableStorage> m_address_to_function;
/// vector storing all exec engine
std::vector<std::unique_ptr<llvm::ExecutionEngine> > m_executable_storage;
/// The time at which the m_address_to_ordinal cache was last cleared
std::chrono::high_resolution_clock::time_point m_last_cache_clear_time;