WIP: Low-latency performance and input latency optimizations

scripts/build.sh

@@ -9,7 +9,12 @@ python3 scripts/prepare.py
 # so Release's -DNDEBUG trips its "mismatch in debug-ness macros" #error.
 # x86-64 only: the patched OpenDirectory declares ivars in @implementation, which the
 # 32-bit (fragile ABI) slice cannot compile, and the macOS client is 64-bit.
+# darling-lol perf: inject -O3 and -march=native even with empty build type,
+# so the base Darling runtime is not compiled at -O0.  The empty build type
+# is required by objc4's debug-ness macro check.
 cmake -S build/darling-src -B build/darling-src/build -G 'Unix Makefiles' \
-  -DCMAKE_BUILD_TYPE= -DTARGET_i386=OFF -DCMAKE_INSTALL_PREFIX=/usr/local -DENABLE_METAL=ON
+  -DCMAKE_BUILD_TYPE= -DTARGET_i386=OFF -DCMAKE_INSTALL_PREFIX=/usr/local -DENABLE_METAL=ON \
+  -DCMAKE_C_FLAGS_INIT="-O3 -march=native -mtune=native -pipe" \
+  -DCMAKE_CXX_FLAGS_INIT="-O3 -march=native -mtune=native -pipe"
 cmake --build build/darling-src/build --parallel "${JOBS:-$(nproc)}"
 echo 'Build complete. Install the base runtime with: sudo cmake --install build/darling-src/build'

scripts/install-runtime.sh

@@ -14,4 +14,9 @@ chmod 1777 "$HOME/.darling/private/tmp"
 python3 build/runtime/tools/stop-darling-runtime.py
 sh build/runtime/tools/install-riot-presentation-runtime.sh
 sh build/runtime/tools/install-riot-gpu-runtime.sh
+# darling-lol perf: build and install optimized libc/libc++/libplatform.
+if [ -f build/runtime/tools/build-riot-libs-runtime.sh ]; then
+  sh build/runtime/tools/build-riot-libs-runtime.sh
+  python3 build/runtime/tools/install-riot-libs-runtime.py
+fi
 python3 build/runtime/tools/install-darling-system-profiler.py

scripts/run.sh

@@ -4,4 +4,9 @@ repo=$(CDPATH= cd -- "$(dirname -- "$0")/.." && pwd)
 cd "$repo"
 python3 scripts/configure.py >/dev/null
 if [ -d build/venv/bin ]; then PATH="$repo/build/venv/bin:$PATH"; export PATH; fi
+# darling-lol perf: optionally wrap with gamemoderun for automatic
+# CPU governor, nice level, and scheduler optimizations.
+if [ "${RCLOL_GAMEMODE:-auto}" != "0" ] && command -v gamemoderun >/dev/null 2>&1; then
+  exec gamemoderun sh build/runtime/tools/run-riot-client.sh
+fi
 exec sh build/runtime/tools/run-riot-client.sh

scripts/validate.py

@@ -4,7 +4,10 @@ import ast,json,re,subprocess,sys
 from pathlib import Path
 from common import ROOT
 subprocess.run([sys.executable,str(ROOT/'scripts/configure.py')],check=True)
-files=subprocess.check_output(['git','-C',str(ROOT),'ls-files','-z']).decode().split('\0')
+try:
+    files=subprocess.check_output(['git','-C',str(ROOT),'ls-files','-z'],stderr=subprocess.DEVNULL).decode().split('\0')
+except Exception:
+    files=[str(p.relative_to(ROOT)) for p in ROOT.rglob('*') if p.is_file() and not any(part.startswith('.') or part in ['build','__pycache__'] for part in p.relative_to(ROOT).parts)]
 errors=[]
 secret_patterns=[r'gh[pousr]_[A-Za-z0-9]{30,}',r'AKIA[0-9A-Z]{16}',r'eyJ[A-Za-z0-9_-]{20,}\.[A-Za-z0-9_-]{20,}\.[A-Za-z0-9_-]{20,}',r'-----BEGIN (?:RSA |EC |OPENSSH )?PRIVATE KEY-----']
 for name in filter(None,files):