NAME¶

vdm_memcpy() - create a new memcpy virtual data mover operation structure

SYNOPSIS¶

#include <libminiasync.h>
struct vdm_operation_output_memcpy {


    void *dest;
};
FUTURE(vdm_operation_future,


    struct vdm_operation_data, struct vdm_operation_output);
struct vdm_operation_future vdm_memcpy(struct vdm *vdm, void *dest, void *src,


    size_t n, uint64_t flags);
    

For general description of virtual data mover API, see miniasync_vdm(7).

DESCRIPTION¶

vdm_memcpy() initializes and returns a new memcpy future based on the virtual data mover implementation instance vdm. The parameters: dest, src, n are standard memcpy parameters. The flags represents data mover specific flags. For example, miniasync_vdm_dml(7) flag VDM_F_MEM_DURABLE specifies that the write destination is identified as a write to durable memory. This flag is meant to be used only with the miniasync_vdm_dml(7) data mover implementation, providing it to any other data mover will result in undefined behavior.

Memcpy future obtained using vdm_memcpy() will attempt to copy n bytes from memory area src to memory area dest when its polled.

SEE ALSO¶

vdm_flush(3), vdm_memmove(3), vdm_memset(3), miniasync(7), miniasync_vdm(7), miniasync_vdm_dml(7) and <https://pmem.io>