From patchwork Sun Feb 14 01:20:08 2021 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit X-Patchwork-Submitter: Dmitry Kozlyuk X-Patchwork-Id: 87895 X-Patchwork-Delegate: david.marchand@redhat.com Return-Path: X-Original-To: patchwork@inbox.dpdk.org Delivered-To: patchwork@inbox.dpdk.org Received: from mails.dpdk.org (mails.dpdk.org [217.70.189.124]) by inbox.dpdk.org (Postfix) with ESMTP id F0D3CA0546; Sun, 14 Feb 2021 02:20:33 +0100 (CET) Received: from [217.70.189.124] (localhost [127.0.0.1]) by mails.dpdk.org (Postfix) with ESMTP id 469631CC4DD; Sun, 14 Feb 2021 02:20:28 +0100 (CET) Received: from mail-lj1-f179.google.com (mail-lj1-f179.google.com [209.85.208.179]) by mails.dpdk.org (Postfix) with ESMTP id 2373A406A2 for ; Sun, 14 Feb 2021 02:20:25 +0100 (CET) Received: by mail-lj1-f179.google.com with SMTP id k22so2988434ljg.3 for ; Sat, 13 Feb 2021 17:20:25 -0800 (PST) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=gmail.com; s=20161025; h=from:to:cc:subject:date:message-id:in-reply-to:references :mime-version:content-transfer-encoding; bh=QKFiOkfFl7RVU/2QherG21zwnw2IZzo+sZYpvBQYcqE=; b=HwaT9dulYqYbA2AigDa2PoBFQBZ3E2NwY/8Tf9AR5chgDEm4ixph97etoU94sYj/in SqQHeb+9MK+mbt+K41jZrlOsQjxXvqJ9cqOaUQJNVIGL3nw/urzr0QAATz7qPj7yMXxa OnPHLeOefb6RwaIVcyEYzIUhqKbq5MgMSFKVMJrCVKiH5xK+iBwz7v5G9C3oNW7PqE8j Tx0c7sWIm1AnWQKZZhZf0BoA2JcUGA8P4TpUR0N4BSE0BlYlM1VRbWik2HetI6x0qzbZ LhsCj6aWoVIUgZ0jeo1IE8c3AzMInqx1GGKYrkruJxqGMTgxfGmEdwOHM8F0cjNCsgPS pLgA== X-Google-DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=1e100.net; s=20161025; h=x-gm-message-state:from:to:cc:subject:date:message-id:in-reply-to :references:mime-version:content-transfer-encoding; bh=QKFiOkfFl7RVU/2QherG21zwnw2IZzo+sZYpvBQYcqE=; b=neaYdDZUeQDDtoZRPnx70qcVChoBTse0KT1fmKjT3xVOU659R/QmFNMxkMpe8o59Xc OOynsTfNcq4CkAg0FWYCpgF7N7WqFr3L3w7Pu0KBdvzgJUFjdMmtyL45GTKW625Siql1 i8SNUBcTeArOgE6HN+AFKRtjX1reGDvuheDBQ7iuMC3D+g8a0CG78Mc/74UBp3Z+zUHi Ue/P8uLGE2zogXyva5qOCEO2YBEqfJhfDwoMZAy3iMTCEtbwETOIFf5xAwnyqYZq5jzk Gl6bszS1cMi1tPi8cX8/Z4S6jG2NlXL0J/7fN8BgWgpYEKis56ejCJPyN9Wiv4tDFbQW or7Q== X-Gm-Message-State: AOAM5314g+mkQ8AAPCwMYSgFWJ/M64EHrEkHAe4fEcVvfpbUMJ+2Wz8Z UjJrRQTK2NdscXIc9mAu8/aric+YyK0vJQ== X-Google-Smtp-Source: ABdhPJzXNbWdPyFB5ds3MU0fdbU0dAXZRoBw+hNVzBJ+NsFAceIukNEuaIEEsbkplqOv3EBeCo6GTA== X-Received: by 2002:a2e:b8d3:: with SMTP id s19mr5738246ljp.97.1613265624528; Sat, 13 Feb 2021 17:20:24 -0800 (PST) Received: from localhost.localdomain (broadband-37-110-65-23.ip.moscow.rt.ru. [37.110.65.23]) by smtp.gmail.com with ESMTPSA id h11sm2237648lfd.243.2021.02.13.17.20.23 (version=TLS1_3 cipher=TLS_AES_256_GCM_SHA384 bits=256/256); Sat, 13 Feb 2021 17:20:23 -0800 (PST) From: Dmitry Kozlyuk To: dev@dpdk.org Cc: Tyler Retzlaff , Mike Wells , Dmitry Kozlyuk , Narcisa Ana Maria Vasile , Dmitry Malloy , Pallavi Kadam , Ray Kinsella , Neil Horman Date: Sun, 14 Feb 2021 04:20:08 +0300 Message-Id: <20210214012013.23165-2-dmitry.kozliuk@gmail.com> X-Mailer: git-send-email 2.29.2 In-Reply-To: <20210214012013.23165-1-dmitry.kozliuk@gmail.com> References: <20210214012013.23165-1-dmitry.kozliuk@gmail.com> MIME-Version: 1.0 Subject: [dpdk-dev] [PATCH 1/6] eal: add internal API for current time X-BeenThere: dev@dpdk.org X-Mailman-Version: 2.1.29 Precedence: list List-Id: DPDK patches and discussions List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , Errors-To: dev-bounces@dpdk.org Sender: "dev" Many PMDs use POSIX gettimeofday(). Add rte_time_get_us() function to obtain current time with microsecond precision on all platforms. Signed-off-by: Dmitry Kozlyuk --- lib/librte_eal/include/rte_time.h | 17 +++++++++++++++++ lib/librte_eal/rte_eal_exports.def | 1 + lib/librte_eal/unix/eal_unix_timer.c | 13 +++++++++++++ lib/librte_eal/version.map | 1 + lib/librte_eal/windows/eal_timer.c | 20 +++++++++++++++++++- 5 files changed, 51 insertions(+), 1 deletion(-) diff --git a/lib/librte_eal/include/rte_time.h b/lib/librte_eal/include/rte_time.h index 5ad7c8841..50fa4f889 100644 --- a/lib/librte_eal/include/rte_time.h +++ b/lib/librte_eal/include/rte_time.h @@ -8,6 +8,8 @@ #include #include +#include + #define NSEC_PER_SEC 1000000000L /** @@ -98,4 +100,19 @@ rte_ns_to_timespec(uint64_t nsec) return ts; } +/* Point of time with microsecond precision. */ +struct rte_time_us { + int64_t sec; /**< Number of whole seconds. */ + int64_t usec; /**< Fractional part of second in [0, 999999]. */ +}; + +/** + * Get current system time. + * + * @param now + * Receives current system time. + */ +__rte_internal +void rte_time_get_us(struct rte_time_us *now); + #endif /* _RTE_TIME_H_ */ diff --git a/lib/librte_eal/rte_eal_exports.def b/lib/librte_eal/rte_eal_exports.def index 474cf123f..cb691f7bc 100644 --- a/lib/librte_eal/rte_eal_exports.def +++ b/lib/librte_eal/rte_eal_exports.def @@ -334,3 +334,4 @@ EXPORTS rte_mem_map rte_mem_page_size rte_mem_unmap + rte_time_get_us diff --git a/lib/librte_eal/unix/eal_unix_timer.c b/lib/librte_eal/unix/eal_unix_timer.c index cc5015910..5612fdebe 100644 --- a/lib/librte_eal/unix/eal_unix_timer.c +++ b/lib/librte_eal/unix/eal_unix_timer.c @@ -4,7 +4,10 @@ #include +#include + #include +#include void rte_delay_us_sleep(unsigned int us) @@ -27,3 +30,13 @@ rte_delay_us_sleep(unsigned int us) ind = 1 - ind; } } + +void +rte_time_get_us(struct rte_time_us *now) +{ + struct timeval sys; + + gettimeofday(&sys, NULL); + now->sec = sys.tv_sec; + now->usec = sys.tv_usec; +} diff --git a/lib/librte_eal/version.map b/lib/librte_eal/version.map index fce90a112..405bed766 100644 --- a/lib/librte_eal/version.map +++ b/lib/librte_eal/version.map @@ -421,4 +421,5 @@ INTERNAL { rte_mem_map; rte_mem_page_size; rte_mem_unmap; + rte_time_get_us; }; diff --git a/lib/librte_eal/windows/eal_timer.c b/lib/librte_eal/windows/eal_timer.c index b070cb775..b5c8eaa73 100644 --- a/lib/librte_eal/windows/eal_timer.c +++ b/lib/librte_eal/windows/eal_timer.c @@ -9,6 +9,7 @@ #include #include #include +#include #include "eal_private.h" #define US_PER_SEC 1E6 @@ -85,10 +86,27 @@ get_tsc_freq(void) return RTE_ALIGN_MUL_NEAR(tsc_hz, CYC_PER_10MHZ); } - int rte_eal_timer_init(void) { set_tsc_freq(); return 0; } + +void +rte_time_get_us(struct rte_time_us *now) +{ + /* 100ns ticks from 1601-01-01 to 1970-01-01 */ + static const uint64_t EPOCH = 116444736000000000ULL; + static const uint64_t TICKS_PER_USEC = 10; + static const uint64_t USEC_PER_SEC = 1000000; + + FILETIME ft; + uint64_t ticks, sec; + + GetSystemTimePreciseAsFileTime(&ft); + ticks = ((uint64_t)ft.dwHighDateTime << 32) | ft.dwLowDateTime; + sec = (ticks - EPOCH) / (TICKS_PER_USEC * USEC_PER_SEC); + now->sec = sec; + now->usec = (ticks - sec * USEC_PER_SEC) / TICKS_PER_USEC; +}