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[83.233.76.66]) by smtp.gmail.com with ESMTPSA id y131sm2849878lfd.26.2016.10.24.01.24.57 (version=TLS1_2 cipher=ECDHE-RSA-AES128-SHA bits=128/128); Mon, 24 Oct 2016 01:24:57 -0700 (PDT) From: Christophe Milard To: mike.holmes@linaro.org, bill.fischofer@linaro.org, lng-odp@lists.linaro.org Date: Mon, 24 Oct 2016 11:24:07 +0200 Message-Id: <1477301053-35938-11-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 10/16] api: shmem: add flag and function to share memory between ODP instances 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 flag ODP_SHM_EXPORT is added: when passed at odp_shm_reserve() time the memory block becomes visible to other ODP instances. The function odp_shm_reserve_exported() is added: this function enables to reserve block of memories exported by other ODP instances (using the ODP_SHM_EXPORT flag). Signed-off-by: Christophe Milard --- include/odp/api/spec/shared_memory.h | 26 ++++++++++++++++++++++++++ 1 file changed, 26 insertions(+) -- 2.7.4 diff --git a/include/odp/api/spec/shared_memory.h b/include/odp/api/spec/shared_memory.h index cccc470..f071bba 100644 --- a/include/odp/api/spec/shared_memory.h +++ b/include/odp/api/spec/shared_memory.h @@ -14,6 +14,7 @@ #ifndef ODP_API_SHARED_MEMORY_H_ #define ODP_API_SHARED_MEMORY_H_ #include +#include #ifdef __cplusplus extern "C" { @@ -62,6 +63,13 @@ extern "C" { * be swapped out (nor physically moved in physical address space). */ #define ODP_SHM_LOCK 0x8 +/** + * Export memory + * + * When set, the memory block becomes visible to other ODP instances + * through odp_shm_reserve_exported(). + */ +#define ODP_SHM_EXPORT 0x10 /** * Shared memory block info @@ -148,6 +156,24 @@ int odp_shm_free(odp_shm_t shm); */ odp_shm_t odp_shm_lookup(const char *name); +/** + * Get and reserve a block of shared memory, exported by another ODP instance + * + * @param remote_name Name of the block, in the remote ODP instance + * @param odp_inst Remote ODP instance, as returned by odp_init_global() + * @param local_name Name given to the block, in the local ODP instance + * (or NULL, if the application doesn't care) + * @param align Block alignment in bytes + * @param flags Shared memory parameter flags (ODP_SHM_*). + * Default value is 0. + * + * @return A new handle to the block if it is found (must be freed when done). + * @retval ODP_SHM_INVALID on failure + */ +odp_shm_t odp_shm_reserve_exported(const char *remote_name, + odp_instance_t odp_inst, + const char *local_name, + uint64_t align, uint32_t flags); /** * Shared memory block address