Improve GetNearestNeighbors() performance #2 #15

	name: Benchmarks
	on:
	push:
	branches:
	- master
	- google_benchmark

	permissions:
	contents: write
	deployments: write

	jobs:
	benchmark:
	name: Build and Run Benchmarks
	runs-on: ubuntu-latest
	steps:
	# Checkout repository and submodules
	- name: Checkout code
	uses: actions/checkout@v4
	with:
	submodules: true

	# Install dependencies
	- name: Install dependencies
	run: \|
	sudo apt-get update
	sudo apt-get install -y cmake g++ make
	sudo apt-get install libtbb-dev

	# Build Benchmark project and link with Google Benchmark
	- name: Build project
	run: \|
	mkdir -p benchmarks/automatic/build && cd benchmarks/automatic/build
	cmake -DCMAKE_BUILD_TYPE=Release ..
	make -j$(nproc)

	# Run benchmarks and save results to JSON
	- name: Run benchmarks
	run: \|
	./benchmarks/automatic/build/benchmarks --benchmark_out=benchmarks/automatic/benchmark_result.json --benchmark_out_format=json

	# Store benchmark result on a branch
	- name: Store benchmark result
	uses: benchmark-action/github-action-benchmark@v1
	with:
	name: C++ Benchmark
	tool: 'googlecpp'
	output-file-path: benchmarks/automatic/benchmark_result.json
	github-token: ${{ secrets.GITHUB_TOKEN }}
	auto-push: true
	auto-push-branch: gh_pages
	alert-threshold: '200%'
	comment-on-alert: true
	fail-on-alert: true
	alert-comment-cc-users: '@attcs'

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