Function: ipc_mem_close

Product	Supported (√/x)
Ascend 950PR/Ascend 950DT	√
Atlas A3 training products/Atlas A3 inference products	√
Atlas A2 training products/Atlas A2 inference products	√
Atlas training products	√
Atlas inference products	√
Atlas 200I/500 A2 inference products	x

Disables IPC-based memory sharing. Processes that call both acl.rt.ipc_mem_import_by_key and acl.rt.ipc_mem_get_export_key also need to call this API. For the same shared memory key, all processes calling acl.rt.ipc_mem_import_by_key must complete the acl.rt.ipc_mem_close call before any process calling acl.rt.ipc_mem_get_export_key can call acl.rt.ipc_mem_close. Failure to follow this sequence may cause errors. This API must work with other APIs to implement memory sharing. For details, see the description of acl.rt.ipc_mem_get_export_key.

C Prototype

aclError aclrtIpcMemClose(const char *key)

Parameter	Description
key	Str, shared memory key, which is obtained by calling acl.rt.ipc_mem_get_export_key.

Return Value	Description
ret	Int, 0 on success; else failure.

Parent topic: Memory Sharing Between IPC Processes