dahjah/rpcs3
1
0
Fork 0
mirror of https://github.com/RPCS3/rpcs3.git synced 2026-04-17 06:51:32 -06:00
Code Issues Packages Projects Releases Wiki Activity

Optimize get_system_time using 128 bit math

Browse Source
This commit is contained in:
Elad 2024-10-24 04:39:02 +03:00 committed by elad335
parent f3e08d5bc3
commit 9a641d5b15
1 changed files with 8 additions and 0 deletions
Show Stats Download Patch File Download Diff File Expand all files Collapse all files

8
rpcs3/Emu/Cell/lv2/sys_time.cpp
View File

@ -155,7 +155,11 @@ u64 get_timebased_time()
const u64 time = count.QuadPart;
const u64 freq = s_time_aux_info.perf_freq;
#if is_u128_emulated
const u64 result = static_cast<u64>(u128_from_mul(time * g_cfg.core.clocks_scale, g_timebase_freq) / freq / 100u);
#else
const u64 result = (time / freq * g_timebase_freq + time % freq * g_timebase_freq / freq) * g_cfg.core.clocks_scale / 100u;
#endif
#else
struct timespec ts;
ensure(::clock_gettime(CLOCK_MONOTONIC, &ts) == 0);
@ -199,7 +203,11 @@ u64 get_system_time()
const u64 time = count.QuadPart;
const u64 freq = s_time_aux_info.perf_freq;
#if is_u128_emulated
const u64 result = static_cast<u64>(u128_from_mul(time, 1000000ull) / freq);
#else
const u64 result = time / freq * 1000000ull + (time % freq) * 1000000ull / freq;
#endif
#else
struct timespec ts;
ensure(::clock_gettime(CLOCK_MONOTONIC, &ts) == 0);