Files
ppsspp/Core/HLE/sceIo.h
T
libretroadmin f1208a7a5a Make threading lock-free
The core and the headless tools no longer use mutexes, condition variables,
spinlocks, std::atomic, std::thread or volatile flags. Threads hand off through
libretro-common's retro_atomic and rthreads plus a few small pieces on top of
them in Common/Thread: Thread, MpscQueue, EventCounter, ParkingLot waits and
ReaderGate. Every wait blocks until it's woken; nothing polls on a timer.

State that only one thread touches just loses its lock. The PSP filesystem,
sceIo and the savedata dialog now belong to the emulation thread: async reads
and writes run when they're queued and complete later in emulated time, and
the IO and savedata threads are gone. The friend finder only talks to the
adhoc server and hands what it gets to the emulation thread. GPU init always
runs on the thread that starts the game.

The Vulkan render and compile queues, pipeline and render pass caches, delete
list and SPIR-V cache, the GL render queue, the software renderer's jit caches,
the file loader caches, the web debugger, UPnP, input, savestates, logging and
the GE debugger all hand off through queues and atomics. The IR jit's spinning
profiler thread goes.

A CPU thread with nothing to run now sleeps until work is queued instead of
spinning. Headless with --debugger waits for a client while stopped, and ends
the run once every client that connected has left. Web server shutdown keeps
servicing the CPU queue until the server has finished.
2026-10-09 04:56:16 +02:00

53 lines
1.9 KiB
C++

// Copyright (c) 2012- PPSSPP Project.
// This program is free software: you can redistribute it and/or modify
// it under the terms of the GNU General Public License as published by
// the Free Software Foundation, version 2.0 or later versions.
// This program is distributed in the hope that it will be useful,
// but WITHOUT ANY WARRANTY; without even the implied warranty of
// MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
// GNU General Public License 2.0 for more details.
// A copy of the GPL 2.0 should have been included with the program.
// If not, see http://www.gnu.org/licenses/
// Official git repository and contact information can be found at
// https://github.com/hrydgard/ppsspp and http://www.ppsspp.org/.
#pragma once
class PointerWrap;
class KernelObject;
void __IoInit();
void __IoDoState(PointerWrap &p);
void __IoShutdown();
// Waits for async reads and writes still accessing PSP memory on the IO thread.
void __IoVblank();
struct ScePspDateTime;
struct tm;
u32 sceIoIoctl(u32 id, u32 cmd, u32 indataPtr, u32 inlen, u32 outdataPtr, u32 outlen);
// Called by sceIoIoctl, which normally applies the delay this function writes to usec.
// If you need to call sceIoIoctl from a HLE function implementation more than once, use
// __IoIoctl directly to avoid double-delays.
int __IoIoctl(u32 id, u32 cmd, u32 indataPtr, u32 inlen, u32 outdataPtr, u32 outlen, int &usec);
u32 __IoGetFileHandleFromId(u32 id, u32 &outError);
// What sceIoOpen and sceIoRead charge, for loaders that read whole files without going through them.
int __IoOpenDelayUs(const char *filename);
int __IoReadDelayUs(int size);
void ConvertTmToPspDateTime(ScePspDateTime& date_out, const tm& date_in, int microSeconds);
KernelObject *__KernelFileNodeObject();
KernelObject *__KernelDirListingObject();
void Register_IoFileMgrForKernel();
void Register_IoFileMgrForUser();
void Register_StdioForKernel();
void Register_StdioForUser();