Merge pull request #62 from jhawthorn/stack_table

Expose StackTable to Ruby

Author: jhawthorn

Gemfile

@@ -8,5 +8,6 @@ gemspec
 gem "rake", "~> 13.0"
 
 gem "rake-compiler"
+gem "benchmark-ips"
 
 gem "minitest", "~> 5.0"

examples/measure_overhead.rb

@@ -0,0 +1,39 @@
+require "benchmark/ips"
+require "vernier"
+
+def compare(**options, &block)
+  block.call
+
+  Benchmark.ips do |x|
+    x.report "no profiler" do |n|
+      n.times do
+        block.call
+      end
+    end
+
+    x.report "vernier" do |n|
+      Vernier.profile(**options) do
+        n.times do
+          block.call
+        end
+      end
+    end
+
+    x.compare!
+  end
+end
+
+compare do
+  i = 0
+  while i < 10_000
+    i += 1
+  end
+end
+
+compare(allocation_sample_rate: 1000) do
+  Object.new
+end
+
+compare(allocation_sample_rate: 1) do
+  Object.new
+end