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libretroadmin
9f13f0f051
The core no longer sleeps to pace itself: the frontend runs retro_run at its own rate, so the frame throttle, the idle-vblank delay and the real clock sync event (and its core option) are gone, and a stepping CPU hands straight back instead of waiting 2 ms. Waits that polled now park on a lock-free eventcount through Common/Thread/ParkingLot and are woken by whoever changes the state: a paused GL emu thread, which also queues a marker behind its last frame so pausing runs the render queue up to it instead of polling; async I/O results; the software renderer when its queue is full; Vulkan pipeline compiles; and debugger requests once stepping ends. Boot joins the loader thread, cache shutdown joins its read-ahead thread, and the slow-I/O simulation is removed. The path browser, the HTTP and WebSocket servers, the Windows console and the game info cache are left out of the core build. libretro/test gains lrgltest, which drives the GL backend on a surfaceless EGL context through every path that pauses or stops the emu thread; run.sh and the image checks CI job run it on llvmpipe.
34 lines
752 B
C++
34 lines
752 B
C++
#include "Common/Thread/ParkingLot.h"
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static constexpr int PARKING_SHARDS = 64;
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namespace {
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struct ParkingLotShards {
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retro_eventcount_t ec[PARKING_SHARDS];
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ParkingLotShards() {
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for (int i = 0; i < PARKING_SHARDS; i++)
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retro_eventcount_init(&ec[i]);
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}
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~ParkingLotShards() {
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for (int i = 0; i < PARKING_SHARDS; i++)
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retro_eventcount_free(&ec[i]);
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}
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};
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// Function-local so it exists before any static constructor that might wait.
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ParkingLotShards &Shards() {
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static ParkingLotShards shards;
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return shards;
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}
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} // namespace
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retro_eventcount_t *ParkingLotFor(const void *addr) {
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uintptr_t h = (uintptr_t)addr;
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h ^= h >> 17;
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h *= (uintptr_t)0x9E3779B97F4A7C15ULL;
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h ^= h >> 29;
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return &Shards().ec[h & (PARKING_SHARDS - 1)];
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}
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