Import timeouts.c directly from William Ahern's git.

Imported from here: https://github.com/wahern/timeout

Imported as of upstream e5a9e8bfaa9c631bdc54002181795931b65bdc1a.

All sources unmodified.

1 files changed, 29 insertions, 0 deletions

diff --git a/src/ext/timeouts/bench/bench-expire.lua b/src/ext/timeouts/bench/bench-expire.lua
new file mode 100755
index 0000000000..3e6374ed52
--- /dev/null
+++ b/src/ext/timeouts/bench/bench-expire.lua
@@ -0,0 +1,29 @@
+#!/usr/bin/env lua
+
+local bench = require"bench"
+local aux = require"bench-aux"
+
+local lib = ... or aux.optenv("BENCH_L", "bench-wheel.so")
+local limit = tonumber(aux.optenv("BENCH_N", 1000000))
+local step  = tonumber(aux.optenv("BENCH_S", limit / 100))
+-- expire 1/1000 * #timeouts per clock update
+local exp_step = tonumber(aux.optenv("BENCH_E", 0.0001)) 
+local verbose = aux.toboolean(os.getenv("BENCH_V", false))
+
+local B = require"bench".new(lib, count)
+
+for i=0,limit,step do
+	-- add i timeouts
+	local fill_elapsed, fill_count, fill_last  = aux.time(B.fill, B, i)
+
+	-- expire timeouts by iteratively updating clock. exp_step is the
+	-- approximate number of timeouts (as a fraction of the total number
+	-- of timeouts) that will expire per update.
+	local exp_elapsed, exp_count = aux.time(B.expire, B, fill_count, math.floor(fill_last * exp_step))
+	assert(exp_count == i)
+	assert(B:empty())
+	local exp_rate = i > 0 and i / exp_elapsed or 0
+
+	local fmt = verbose and "%d\t%f\t(%d/s)\t(fill:%f)" or "%d\t%f"
+	aux.say(fmt, i, exp_elapsed, exp_rate, fill_elapsed)
+end