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 <christophe.mil...@linaro.org> --- include/odp/api/spec/shared_memory.h | 19 +++++++++++++++++++ 1 file changed, 19 insertions(+) diff --git a/include/odp/api/spec/shared_memory.h b/include/odp/api/spec/shared_memory.h index fe683d4..1b4d068 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 <odp/visibility_begin.h> +#include <odp/api/init.h> #ifdef __cplusplus extern "C" { @@ -49,6 +50,7 @@ extern "C" { #define ODP_SHM_PROC 0x2 /**< Share with external processes */ #define ODP_SHM_SINGLE_VA 0x4 /**< guarantee unique addr on all threads*/ #define ODP_SHM_LOCK 0x8 /**< prevent swapping this memory */ +#define ODP_SHM_EXPORT 0x10 /**< share with other ODP instances */ /** * Shared memory block info @@ -135,6 +137,23 @@ 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[in] remote_name Name of the block, in the remote ODP instance + * @param[in] odp_inst Remote ODP instance, as returned by odp_init_global() + * @param[in] local_name Name given to the block, in the local ODP instance + * @param[in] align Block alignment in bytes + * @param[in] 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 -- 2.7.4