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SFP:1101; X-MS-Office365-Filtering-Correlation-Id-Prvs: a25e14bc-ed57-492b-da12-08d8221f2650 X-Forefront-PRVS: 0457F11EAF X-Microsoft-Antispam: BCL:0; X-Microsoft-Antispam-Message-Info: PZCO8NFOco99SgbJjGlBexKmglQ9fyKqaZDlkAaHkna6TDOEX6yAriYAAOe4GGUuGAMY8s0SK/5S4zmhs8jTf30nuVaVQEw9nRDRWdXwJgrh94a+/CBycAYbZXXcSKtlHdRmEIEtVw3S1+updPN0Q4o+XT+/bfkjtOdDHoTvnS8Cs2RrgBYpA7p/208SSLq75hYbKloNePBYwEC5PYc//k1PPvK/IaaLIrISX/1/F8V0WkqnR17HvOX8Z2bsLTRu8/zROFjwU6i7sLnAstYoLU3i2XVmiXgeDbFi+X78ys4L7qzBrt90IAl3SXVmQU62c7S/JcqLWNNy13DxtOt3OjD2vouUDUlFIPiXfb2WTETAnWvlc5vYAmlc08TxR7RfkLXRY0+3KDS0BydwNSyWzumU6mHccBq6tEAq99/VEgc= X-OriginatorOrg: arm.com X-MS-Exchange-CrossTenant-OriginalArrivalTime: 07 Jul 2020 02:41:06.8356 (UTC) X-MS-Exchange-CrossTenant-Network-Message-Id: 4f79af2d-0853-4778-1f3a-08d8221f3308 X-MS-Exchange-CrossTenant-Id: f34e5979-57d9-4aaa-ad4d-b122a662184d X-MS-Exchange-CrossTenant-OriginalAttributedTenantConnectingIp: TenantId=f34e5979-57d9-4aaa-ad4d-b122a662184d; Ip=[63.35.35.123]; Helo=[64aa7808-outbound-1.mta.getcheckrecipient.com] X-MS-Exchange-CrossTenant-AuthSource: DB5EUR03FT032.eop-EUR03.prod.protection.outlook.com X-MS-Exchange-CrossTenant-AuthAs: Anonymous X-MS-Exchange-CrossTenant-FromEntityHeader: HybridOnPrem X-MS-Exchange-Transport-CrossTenantHeadersStamped: VI1PR08MB4000 Subject: Re: [dpdk-dev] [PATCH v2 1/6] lib/eal: add a common wrapper for restricted pointers X-BeenThere: dev@dpdk.org X-Mailman-Version: 2.1.15 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" > -----Original Message----- > From: Joyce Kong > Sent: Monday, July 6, 2020 3:49 PM > To: maxime.coquelin@redhat.com; jerinj@marvell.com; > zhihong.wang@intel.com; xiaolong.ye@intel.com; beilei.xing@intel.com; > jia.guo@intel.com; john.mcnamara@intel.com; matan@mellanox.com; > shahafs@mellanox.com; viacheslavo@mellanox.com; Honnappa Nagarahalli > ; Phil Yang ; > Ruifeng Wang > Cc: dev@dpdk.org; nd > Subject: [PATCH v2 1/6] lib/eal: add a common wrapper for restricted > pointers >=20 > The 'restrict' keyword is recognized in C99, while type qulifier '__restr= ict' > compiles ok in C with all language levels. This patch is to add a wrapper > defining '__rte_restrict' with 'restrict' and '__restrict' to be supporte= d by all > compilers. >=20 > Signed-off-by: Joyce Kong > --- > lib/librte_eal/include/rte_common.h | 10 ++++++++++ > 1 file changed, 10 insertions(+) >=20 > diff --git a/lib/librte_eal/include/rte_common.h > b/lib/librte_eal/include/rte_common.h > index 0843ce69e..cda32c056 100644 > --- a/lib/librte_eal/include/rte_common.h > +++ b/lib/librte_eal/include/rte_common.h > @@ -103,6 +103,16 @@ typedef uint16_t unaligned_uint16_t; > */ > #define __rte_unused __attribute__((__unused__)) >=20 > +/** > + * Define a wrapper for restricted pointers which can be supported > + * by all compilers. > + */ > +#if __STDC_VERSION__ >=3D 199901 > +#define __rte_restrict restrict > +#else > +#define __rte_restrict __restrict > +#endif > + > /** > * definition to mark a variable or function parameter as used so > * as to avoid a compiler warning > -- > 2.27.0 Reviewed-by: Ruifeng Wang