ShuriZma
/
duckstation
mirror of https://github.com/stenzek/duckstation
1
0
Fork 0
Code Issues Packages Projects Releases Wiki Activity

CPU/CodeCache: Only reset used portion of buffer 

Saves writing 48MB every reset.
This commit is contained in:
Stenzek 2025-01-15 17:35:28 +10:00
parent 1952869cdc
commit 3687697d0e
No known key found for this signature in database
1 changed files with 19 additions and 7 deletions
Show Stats Download Patch File Download Diff File Expand all files Collapse all files

26
src/core/cpu_code_cache.cpp
View File

@ -1432,6 +1432,25 @@ void CPU::CodeCache::UnlinkBlockExits(Block* block)
void CPU::CodeCache::ResetCodeBuffer()
{
if (s_code_used > 0 || s_far_code_used > 0)
{
MemMap::BeginCodeWrite();
if (s_code_used > 0)
{
std::memset(s_code_ptr, 0, s_code_used);
MemMap::FlushInstructionCache(s_code_ptr, s_code_used);
}
if (s_far_code_used > 0)
{
std::memset(s_far_code_ptr, 0, s_far_code_used);
MemMap::FlushInstructionCache(s_far_code_ptr, s_far_code_used);
}
MemMap::EndCodeWrite();
}
s_code_ptr = static_cast<u8*>(s_code_buffer_ptr);
s_free_code_ptr = s_code_ptr;
s_code_size = RECOMPILER_CODE_CACHE_SIZE - RECOMPILER_FAR_CODE_CACHE_SIZE;
@ -1444,13 +1463,6 @@ void CPU::CodeCache::ResetCodeBuffer()
s_far_code_ptr = (far_code_size > 0) ? (static_cast<u8*>(s_code_ptr) + s_code_size) : nullptr;
s_free_far_code_ptr = s_far_code_ptr;
s_far_code_used = 0;
MemMap::BeginCodeWrite();
std::memset(s_code_ptr, 0, RECOMPILER_CODE_CACHE_SIZE);
MemMap::FlushInstructionCache(s_code_ptr, RECOMPILER_CODE_CACHE_SIZE);
MemMap::EndCodeWrite();
}
u8* CPU::CodeCache::GetFreeCodePointer()