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[83.233.76.66]) by smtp.gmail.com with ESMTPSA id y131sm2849878lfd.26.2016.10.24.01.24.52 (version=TLS1_2 cipher=ECDHE-RSA-AES128-SHA bits=128/128); Mon, 24 Oct 2016 01:24:52 -0700 (PDT) From: Christophe Milard To: mike.holmes@linaro.org, bill.fischofer@linaro.org, lng-odp@lists.linaro.org Date: Mon, 24 Oct 2016 11:24:02 +0200 Message-Id: <1477301053-35938-6-git-send-email-christophe.milard@linaro.org> X-Mailer: git-send-email 2.7.4 In-Reply-To: <1477301053-35938-1-git-send-email-christophe.milard@linaro.org> References: <1477301053-35938-1-git-send-email-christophe.milard@linaro.org> X-Topics: patch Subject: [lng-odp] [API-NEXT PATCHv4 05/16] api: shm: add flag to guarantee address unicity on all ODP threads X-BeenThere: lng-odp@lists.linaro.org X-Mailman-Version: 2.1.16 Precedence: list List-Id: "The OpenDataPlane \(ODP\) List" List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , Errors-To: lng-odp-bounces@lists.linaro.org Sender: "lng-odp" The ODP_SHM_SINGLE_VA flag is created: when set (at odp_shm_reserve()), this flag guarantees that all ODP threads sharing this memory block will see the block at the same address (regadless of ODP thread type -pthread vs process- or fork time) Signed-off-by: Christophe Milard --- include/odp/api/spec/shared_memory.h | 16 +++++++++++----- 1 file changed, 11 insertions(+), 5 deletions(-) -- 2.7.4 diff --git a/include/odp/api/spec/shared_memory.h b/include/odp/api/spec/shared_memory.h index 8c76807..bd4731a 100644 --- a/include/odp/api/spec/shared_memory.h +++ b/include/odp/api/spec/shared_memory.h @@ -43,12 +43,18 @@ extern "C" { #define ODP_SHM_NAME_LEN 32 /* - * Shared memory flags + * Shared memory flags: */ - -/* Share level */ -#define ODP_SHM_SW_ONLY 0x1 /**< Application SW only, no HW access */ -#define ODP_SHM_PROC 0x2 /**< Share with external processes */ +#define ODP_SHM_SW_ONLY 0x1 /**< Application SW only, no HW access */ +#define ODP_SHM_PROC 0x2 /**< Share with external processes */ +/** + * Single virtual address + * + * When set, this flag guarantees that all ODP threads sharing this + * memory block will see the block at the same address - regardless + * of ODP thread type (e.g. pthread vs. process (or fork process time)). + */ +#define ODP_SHM_SINGLE_VA 0x4 /** * Shared memory block info