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174 commits

Author SHA1 Message Date
Nekotekina 332410d20b shared_ptr.hpp: improve atomic_ptr methods 2020-12-04 14:10:53 +03:00
Nekotekina 13a0b88755 atomic.cpp: improve hashtable access 
Simplified, tried to use all ptr bits.
Try to prevent self-collisions (bug).
Hashtable size doubled (to 8 MiB).
 2020-12-01 10:19:31 +03:00
Nekotekina 3b8e3a9714 stdafx.h: remove BOM from custom included headers 
Also add warnings about adding them.
 2020-11-29 15:35:05 +03:00
Nekotekina 872655369a shared_ptr.hpp: fix critical bugs 
Fix array initialization.
Fix reference counting.
Fix offset to refctr.
Add some features.
 2020-11-27 14:32:41 +03:00
Nekotekina b5d498ffda Homebrew atomic_ptr rewritten (util/shared_ptr.hpp) 
It's analogous to C++20 atomic std::shared_ptr

The following things brought into global namespace:
single_ptr
shared_ptr
atomic_ptr
make_single
 2020-11-26 20:11:26 +03:00
Nekotekina bd90e3e37f atomic.cpp: shrink and simplify main hashtable 
Reduce collision detection to 1 or 0 for now.
I think it should be offloaded to notifiers.
 2020-11-26 20:11:26 +03:00
Nekotekina 8b6d615aa6 atomic.hpp: remove/deprecate incomplete notify features 
Notification with "phantom value" could be useful in theory.
As an alternative way of sending signal from the notifier.
But current implementation is just useless.
Also fixed slow_mutex (not used anywhere).
 2020-11-26 06:31:36 +03:00
Nekotekina 2b674d4d8c utils::shm: allow 2M hugepages on demand 2020-11-25 10:41:17 +03:00
Nekotekina 487b572aa6 Linux: remove assertions on MADV_HUGEPAGE 
It's a hint and is allowed to fail.
 2020-11-25 10:41:17 +03:00
Nekotekina 600c0ea5ba atomic.cpp: fix windows/std path 
Always check condition after rearming internal semaphore.
 2020-11-25 10:41:17 +03:00
Nekotekina 00e64920c8 Implement "slow mutex" without spin-waiting. 
Benefits: only 1 byte.
Testing atomic wait.
 2020-11-25 10:41:17 +03:00
Nekotekina d8e9382573 asm.hpp: constexpr refactoring 
Removed asm (what an irony), made many functions constexpr.
Removed some unused function, readding them should be trivial.
 2020-11-24 13:20:40 +03:00
Nekotekina ab248e170c vm_native.cpp: add MADV_HUGEPAGE 
It enables Transparend Huge Pages for some regions on Linux.
Although it can't be actively useful, it seems to do something.
Maybe it's even harmful for recompilers.
 2020-11-24 12:31:11 +03:00
Nekotekina 27097cbcfe atomic.hpp: alter atomic_storage<>::store a bit 
Always fallback to exchange. May improve codegen on gcc.
 2020-11-24 12:31:11 +03:00
Nekotekina 43952e18e2 Implement prefetch_write() and prefetch_exec() wrappers 
Do some refactoring to prefetch_read() in util/asm.hpp as well.
Make all these function constexpr because they are no-ops.
 2020-11-24 12:31:11 +03:00
Nekotekina 14fa96fdef atomic.cpp: don't use empty notify callback 
Instead, allow setting it to null and check for null.
Similar could be done for wait cb, but it's set for all named threads.
 2020-11-24 01:09:04 +03:00
Nekotekina 16cc88dd0e atomic.hpp: fix atomic_wait::list regression 
Typo-regressions. Also improve static asserts.
 2020-11-23 09:26:25 +03:00
Nekotekina 280f5f0b54 atomic.hpp: redefine op::ne to actually mean "not equal" 
WTF is "native endianness", it's native by default.
 2020-11-23 09:24:16 +03:00
Nekotekina d70ab11477 atomic.cpp: remove redundant constexpr 
Static initialization is all-zeros anyway.
But constexpr was killing my intellisense.
And probably also affected compile time.

Also make some internal structures hidden ("static").
 2020-11-22 12:07:49 +03:00
Nekotekina e89a568765 Attempt to fix Emu.Quit() 
There was some kind of "initialization order fiasco" of g_fxo.
Not only should it be used after main, but also destroyed before exit.
 2020-11-21 18:27:16 +03:00
Nekotekina 60cff6f3d4 Attempt to fix #9271 2020-11-21 07:09:48 +03:00
Nekotekina 5f010c2f4c atomic.cpp: optimize "cond" allocation with TLS 
Billions of events can reduce to thousands, saving CPU time a few s.
Only 4 slots are available (arbitrarily), and only 1 is usually used.
Other slots are used only for waiting on multiple atomics.
 2020-11-20 19:13:22 +03:00
Nekotekina 6c18e00977 atomic.cpp: use deterministic "cond" allocation 
Takes ~80 ns instead of ~40 ns, same about deallocation.
Loops don't exist here, only 4-level semaphore tree.
Worst case only happens with concurrence, not from looping.
This optimization is not really necessary at current state of RPCS3.
This is more like to test C++ compilers and MSVC u128 implementation.
 2020-11-20 15:04:17 +03:00
Nekotekina 72ac1aa537 atomic.cpp: use some actual hash for hashtable (std::minstd_rand) 
Should only take about 5ns for initialization.
Should also make collisions almost impossible.

I also suspect I fixed some bad bug in process...
 2020-11-20 15:04:17 +03:00
Nekotekina 3dd48a24ce atomic.cpp: remove tiny redundancy 2020-11-17 15:22:04 +03:00
Nekotekina 984e97cbdc Potential fix for Linux compilation 2020-11-17 15:22:04 +03:00
Nekotekina 333fe9a561 atomic.cpp: fix notification on windows 2020-11-15 04:40:44 +03:00
Nekotekina badb3dc2dd atomic.cpp/threads: remove old wait callback 
Add new wait callback which simply collects statistics.
Shift workarounds towards actual problem detection.
 2020-11-14 18:16:27 +03:00
Nekotekina 3ac819ee70 atomic.cpp: fix waiting on multiple variables 
Silly bugs are so silly...
 2020-11-14 17:25:02 +03:00
Nekotekina 00f877e812 atomic.cpp: fix rare overload scenario 
If slot allocation fails, increase reference counter in every slot.
This prevents search routine from "losing" some slots.
 2020-11-14 13:56:23 +03:00
Nekotekina ab365fe494 Fixed thread pool a bit 
Use 128-bit allocator instead of queue.
When pool is full (128), threads just terminate as before.
 2020-11-13 13:32:44 +03:00
Nekotekina e48f160a29 atomic.cpp: continuation of fixing all-ones masks 
Also added missing const noexcept.
 2020-11-13 12:40:02 +03:00
Nekotekina cfda4d0ade atomic.cpp: optimize raw_notify() for unspecified pointer mode 
Remove unnecessary optimization from cond_alloc().
Optimistic case was absolutely dominating anyway.
Although the whole function is a dirty hack.
Now scanning through all threads is faster.
 2020-11-13 07:05:33 +03:00
Nekotekina 3888b0429c atomic.cpp: print some stats on stop 2020-11-12 05:52:22 +03:00
Nekotekina 70761a4ef0 atomic.cpp: fix notification bug from few commits before 
Make sure forced notification ignores mask comparison.
Also fix masks provided by smaller types to correct ones.
 2020-11-12 05:01:44 +03:00
Nekotekina e37df998e9 atomic.cpp: minor optimization 
Silly MSVC emits unnecessary initialize-on-first-use code guards.
Didn't check other compiler. But workaround just works anyway.
 2020-11-12 03:41:19 +03:00
Nekotekina c30cdfb3a7 atomic.cpp: merge more atomic variables for simplicity 
Compress 16-bit ref counter and two 48+64 bit slot allocators.
This allowed to remove some weird unnecessary logic paths.
Adjust hashtable size to keep it the same.
 2020-11-12 03:39:05 +03:00
Nekotekina 350b704cd7 atomic.cpp: combine two atomics (ref ctr and wait ptr) 
Should fit into cache line perfectly.
Also makes ptr check more robust.
 2020-11-12 01:06:12 +03:00
Nekotekina ad013d59f4 atomic.cpp: don't load actual memory on empty mask 
It's not an optimization. It just allows some tricks safely.
 2020-11-11 23:59:09 +03:00
Nekotekina d391133524 atomic.cpp: minor notification improvement 
Check mask before locking the reference.
Can help to not bother non-eligible waiters.
 2020-11-11 23:51:41 +03:00
Nekotekina 4b823469f7 atomic.cpp: restore notify_all() behaviour 
Restore batch notification with non-blocking attempts.
 2020-11-11 22:43:13 +03:00
Nekotekina 7cd1e767be atomic.cpp: implement some atomic wait operations. 
Instead of plain waiting while equal to some value,
it can be something like less, or greater, or even bitcount.
But it's a draft and untested. Hopefully doesn't break anything.
 2020-11-11 20:46:37 +03:00
Nekotekina c047ab6147 atomic.cpp: waitable atomics got brutally rewritten 
Hashtable increased and flatten, tree-alike extensions removed.
Some things simplified, so it can actually decrease perf a bit.
But most platforms shouldn't be affected.
Removed limit of 56 waiters per pointer.
Real limit now is about 65535.
 2020-11-11 05:35:27 +03:00
Nekotekina d1ee7c651f Make memory locking optional (mlock, VirtualLock). 
Fix desired locking operation (to fix "sudo" memory).
It was discovered that some systems have outdated configuration.
With too tight limit, it's almost impossible to lock anything in memory.
 2020-11-10 06:05:37 +03:00
Nekotekina dcbe8ef5f4 Import VirtualAlloc2 if available (Win10+) 
Import MapViewOfFile3 as well.
Unused, this crap is tricky.
 2020-11-10 03:04:38 +03:00
Nekotekina bd5253047b Improve DYNAMIC_IMPORT 
Don't call get_proc_address every time if if failed.
Also rename Utilities/dynamic_library.h to util/dyn_lib.hpp
 2020-11-10 01:44:31 +03:00
Nekotekina e98eb4659e Implement utils::memory_lock 2020-11-09 22:57:36 +03:00
Nekotekina d1988d384c vm: remove unnecessary memset() on stop 2020-11-09 22:57:36 +03:00
Nekotekina b05d12df0e Hotfix for shm->map_self() 
Make sure mmap returns 64K-aligned results, as on Windows.
 2020-11-08 22:15:59 +03:00
Nekotekina 1c99a2e7fb vm: add map_self() method to utils::shm 
Add complementary unmap_self() method.
Move VirtualMemory to util/vm.hpp
Minor associated include cleanup.
Move asm.h to util/asm.hpp
 2020-11-08 16:43:15 +03:00