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
