From mboxrd@z Thu Jan 1 00:00:00 1970 Return-Path: Received: from [87.239.111.99] (localhost [127.0.0.1]) by dev.tarantool.org (Postfix) with ESMTP id 2A05616C659C; Fri, 26 Dec 2025 12:19:21 +0300 (MSK) DKIM-Filter: OpenDKIM Filter v2.11.0 dev.tarantool.org 2A05616C659C DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/simple; d=tarantool.org; s=dev; t=1766740761; bh=jDP4wAxDlMQXY8YvXGdQoSVjOjeSiAWv8kKOH8ARoNM=; h=To:Date:In-Reply-To:References:Subject:List-Id:List-Unsubscribe: List-Archive:List-Post:List-Help:List-Subscribe:From:Reply-To:Cc: From; b=Lv7PKO7JIYKRlzBvofL1pMo7CW1fgaJZsgiVm6mTQYNd+ziGT9uBRQaFv0Ob8d1g+ zDFLA4mloWmZuO45h7ffw9Lr+LgRCGeNVtgV4WanwlfWDZd1x4ykC6J6jT1djX0Dap yChxMIk8aZtkQ+qQfHDVzdOGVYS62LqDnFVDjOxU= Received: from send219.i.mail.ru (send219.i.mail.ru [95.163.59.58]) (using TLSv1.3 with cipher TLS_AES_256_GCM_SHA384 (256/256 bits) key-exchange X25519 server-signature RSA-PSS (2048 bits) server-digest SHA256) (No client certificate requested) by dev.tarantool.org (Postfix) with ESMTPS id E348416ADBA2 for ; Fri, 26 Dec 2025 12:18:21 +0300 (MSK) DKIM-Filter: OpenDKIM Filter v2.11.0 dev.tarantool.org E348416ADBA2 Received: by exim-smtp-7b4fb89df9-lft7n with esmtpa (envelope-from ) id 1vZ3xk-000000008Cp-4281; Fri, 26 Dec 2025 12:18:21 +0300 To: Sergey Bronnikov Date: Fri, 26 Dec 2025 12:17:33 +0300 Message-ID: X-Mailer: git-send-email 2.52.0 In-Reply-To: References: MIME-Version: 1.0 Content-Transfer-Encoding: 8bit X-Mailru-Src: smtp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eAau8CL7WIMRKs4sN3D3tLDjz0dLbV79QFUyzQ2Ujvy7cMT6pYYqY16iZVKkSc3dCLJ7zSJH7+u4VD18S7Vl4ZUrpaVfd2+vE6kuoey4m4VkSEu53w8ahmwBjZKM/YPHZyZHvz5uv+WouB9+ObcCpyrx6l7KImUglyhkEat/+ysWwi0gdhEs0JGjl6ggRWTy1haxBpVdbIX1nthFXMZebaIdHP2ghjoIc/363UZI6Kf1ptIMVdtTL5f5BIXbXofKQJZKS4c= X-Mailru-Sender: 689FA8AB762F7393DDD5FD59B456EAD23CB25D04BD1F18628700636FE984EBB803B73DA9FBB9A257E49D44BB4BD9522A059A1ED8796F048DB274557F927329BE89D5A3BC2B10C37545BD1C3CC395C826B4A721A3011E896F X-Mras: Ok Subject: [Tarantool-patches] [PATCH v2 luajit 02/41] perf: introduce clock module X-BeenThere: tarantool-patches@dev.tarantool.org X-Mailman-Version: 2.1.34 Precedence: list List-Id: Tarantool development patches List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , From: Sergey Kaplun via Tarantool-patches Reply-To: Sergey Kaplun Cc: tarantool-patches@dev.tarantool.org Errors-To: tarantool-patches-bounces@dev.tarantool.org Sender: "Tarantool-patches" This module contains 2 functions: - `realtime()` -- returns the time represented by the wall clock. - `process_cputime()` -- measures the CPU time instead of elapsed time. Both functions are implemented via FFI call to the `clock_gettime()`. --- perf/utils/clock.lua | 35 +++++++++++++++++++++++++++++++++++ 1 file changed, 35 insertions(+) create mode 100644 perf/utils/clock.lua diff --git a/perf/utils/clock.lua b/perf/utils/clock.lua new file mode 100644 index 00000000..cf708194 --- /dev/null +++ b/perf/utils/clock.lua @@ -0,0 +1,35 @@ +local ffi = require('ffi') + +ffi.cdef[[ +struct timespec { + long tv_sec; /* Seconds. */ + long tv_nsec; /* Nanoseconds. */ +}; + +int clock_gettime(int clockid, struct timespec *tp); +]] + +local C = ffi.C + +-- Wall clock. +local CLOCK_REALTIME = 0 +-- CPU time consumed by the process. +local CLOCK_PROCESS_CPUTIME_ID = 2 + +-- All functions below returns the corresponding elapsed time in +-- seconds. +local M = {} + +local timespec = ffi.new('struct timespec[1]') + +function M.realtime() + C.clock_gettime(CLOCK_REALTIME, timespec) + return tonumber(timespec[0].tv_sec) + tonumber(timespec[0].tv_nsec) / 1e9 +end + +function M.process_cputime() + C.clock_gettime(CLOCK_PROCESS_CPUTIME_ID, timespec) + return tonumber(timespec[0].tv_sec) + tonumber(timespec[0].tv_nsec) / 1e9 +end + +return M -- 2.52.0