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.
These own GPU objects, memory or refcounts in their destructors (or assert
there that they were torn down), so a copy would double-free. Nothing copies
them today; this keeps it that way. The manager base classes cover every
backend's subclass.
Co-Authored-By: Claude Opus 5.5 (1M context) <noreply@anthropic.com>
GLSLtoSPV takes an optional SPIRVCache, keyed on a 32-bit hash of the
source, stage and variant, plus the source length. A changed shader
simply misses. thin3d's shaders and the other fixed ones use a global
cache in PSP/SYSTEM/CACHE/vulkan_spirv.cache, loaded on first use and
saved after graphics init, when a game's cache is saved, and at
shutdown; it's flushed once it reaches 32 entries, about twice what a
session compiles, so outdated ones don't pile up. Game shaders keep
theirs in the .vkshadercache, ahead of the shader IDs so that the
compiles on load find it (version 60), and only what the session used
is saved.
A cold glslang costs about 40ms before its first shader here, and
0.3-0.9ms per shader after that.
Co-Authored-By: Claude Opus 5.5 (1M context) <noreply@anthropic.com>
Instead of just the vertex type.
This will allow things like the vertex decoder supplying defaults, in
order to reduce the number of unique vertex shaders at the cost of
slightly larger vertex data.
This doesn't actually do that yet though, it's just a refactor that can
be done separately.
Part of #16567
Buildfixing
Move some file util files
Buildfix
Move KeyMap.cpp/h to Core where they belong better.
libretro buildfix attempt
Move ini_file
More buildfixes
libretroadmin