mirror of
https://github.com/FEX-Emu/FEX.git
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crueter
9e8463d6d7
- Do compiler/architecture checks EARLY, don't waste time doing random configuration stuff if the user can't even compile in the first place - MSVC is unsupported, I assume? So add a check to disallow. There's literally no MSVC or MSC_VER checks anywhere, so... - Rather than using the MSVC architecture definitions, use our own `ARCHITECTURE_arm64` et al. Hijacking existing "standard" definitions is a very bad idea. Also makes it more readable in CMake - Change the x86 host check to `x86|amd64`. Some systems still refer to themselves as x86 despite being 64-bit for... reasons, and I saw one a very long time ago that referred to it as amd64. This should basically never come up, nor is it really relevant given that FEX is for arm64... but it kinda annoyed me so whatever. TODOs: - Should we check `CMAKE_SIZEOF_VOID_P (equal) 64`? I don't think anyone is even trying to compile this thing on armv7 or older, but might as well? maybe? - What's the status of *BSD, Solaris, macOS? Technically macOS does support Wine, not sure about the others. Signed-off-by: crueter <crueter@eden-emu.dev>
111 lines
3.1 KiB
C++
111 lines
3.1 KiB
C++
// SPDX-License-Identifier: MIT
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#pragma once
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#include <atomic>
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#include <cstddef>
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#include <cstdint>
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#ifdef ARCHITECTURE_x86_64
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#include <x86intrin.h>
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#endif
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namespace FEXCore::SHMStats {
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#ifdef ARCHITECTURE_arm64
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/**
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* @brief Get the raw cycle counter with synchronizing isb.
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*
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* `CNTVCTSS_EL0` also does the same thing, but requires the FEAT_ECV feature.
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*/
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static inline uint64_t GetCycleCounter() {
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uint64_t Result {};
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__asm volatile(R"(
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isb;
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mrs %[Res], CNTVCT_EL0;
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)"
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: [Res] "=r"(Result));
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return Result;
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}
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#else
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static inline uint64_t GetCycleCounter() {
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unsigned dummy;
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uint64_t tsc = __rdtscp(&dummy);
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return tsc;
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}
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#endif
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// FEXCore live-stats
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constexpr uint8_t STATS_VERSION = 2;
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enum class AppType : uint8_t {
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LINUX_32,
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LINUX_64,
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WIN_ARM64EC,
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WIN_WOW64,
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};
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// Only append new members to the end of {ThreadStatsHeader, ThreadStats} to allow old tools time to support new information.
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// FEX isn't guaranteeing /not/ breaking compatibility with versions, but trying to not cause too much churn.
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struct ThreadStatsHeader {
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uint8_t Version;
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AppType app_type;
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uint16_t ThreadStatsSize;
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char fex_version[48];
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std::atomic<uint32_t> Head;
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std::atomic<uint32_t> Size;
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uint32_t Pad;
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};
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struct ThreadStats {
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std::atomic<uint32_t> Next;
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std::atomic<uint32_t> TID;
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// Accumulated time (In unscaled CPU cycles!)
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uint64_t AccumulatedJITTime;
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uint64_t AccumulatedSignalTime;
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// Accumulated event counts
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uint64_t AccumulatedSIGBUSCount;
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uint64_t AccumulatedSMCCount;
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uint64_t AccumulatedFloatFallbackCount;
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uint64_t AccumulatedCacheMissCount;
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uint64_t AccumulatedCacheReadLockTime;
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uint64_t AccumulatedCacheWriteLockTime;
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uint64_t AccumulatedJITCount;
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};
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// Ensure 16-byte alignment to take advantage of ARM single-copy atomicity.
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static_assert(sizeof(ThreadStats) % 16 == 0, "Needs to be 16-byte aligned!");
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template<typename T, size_t FlatOffset = 0>
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class AccumulationBlock final {
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public:
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AccumulationBlock(T* Stat)
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: Begin {Stat ? GetCycleCounter() : 0}
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, Stat {Stat} {}
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~AccumulationBlock() {
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if (Stat) {
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const auto Duration = GetCycleCounter() - Begin + FlatOffset;
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auto ref = std::atomic_ref<T>(*Stat);
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ref.fetch_add(Duration, std::memory_order_relaxed);
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}
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}
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private:
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uint64_t Begin;
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T* Stat;
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};
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#define UniqueScopeName2(name, line) name##line
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#define UniqueScopeName(name, line) UniqueScopeName2(name, line)
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#define FEXCORE_PROFILE_ACCUMULATION(ThreadState, Stat) \
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FEXCore::SHMStats::AccumulationBlock<decltype(ThreadState->ThreadStats->Stat)> UniqueScopeName(ScopedAccumulation_, __LINE__)( \
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ThreadState->ThreadStats ? &ThreadState->ThreadStats->Stat : nullptr);
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#define FEXCORE_PROFILE_INSTANT_INCREMENT(ThreadState, Stat, value) \
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do { \
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if (ThreadState->ThreadStats) { \
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ThreadState->ThreadStats->Stat += value; \
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} \
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} while (0)
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} // namespace FEXCore::SHMStats
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