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sys_fs: Aggregate safe file reads (optimization)

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Eladash 2024-01-17 17:08:01 +02:00 • committed by Elad.Ash
parent e401d85af7
commit 312b35051d
1 changed files with 6 additions and 0 deletions
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6
rpcs3/Emu/Cell/lv2/sys_fs.cpp
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@ -365,6 +365,12 @@ lv2_fs_object::lv2_fs_object(utils::serial& ar, bool)
u64 lv2_file::op_read(const fs::file& file, vm::ptr<void> buf, u64 size, u64 opt_pos)
{
if (u64 region = buf.addr() >> 28, region_end = (buf.addr() & 0xfff'ffff) + (size & 0xfff'ffff); region == region_end && ((region >> 28) == 0 || region >= 0xC))
{
// Optimize reads from safe memory
return (opt_pos == umax ? file.read(buf.get_ptr(), size) : file.read_at(opt_pos, buf.get_ptr(), size));
}
// Copy data from intermediate buffer (avoid passing vm pointer to a native API)
std::vector<uchar> local_buf(std::min<u64>(size, 65536));