aclrtMemAccessFlags

typedef enum {
    ACL_RT_MEM_ACCESS_FLAGS_NONE = 0x0,      // The address range is inaccessible.
    ACL_RT_MEM_ACCESS_FLAGS_READ = 0x1,      // The address range is readable.
    ACL_RT_MEM_ACCESS_FLAGS_READWRITE = 0x3, // The address range is readable and writable.
} aclrtMemAccessFlags;