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6.26 acc_map_data – Map previously allocated device memory to host memory. ¶

Description

This function maps previously allocated device and host memory. The device memory is specified with the device address data_dev. The host memory is specified with the host address data_arg and a length of bytes.

C/C++:

Prototype:

void acc_map_data(h_void *data_arg, d_void *data_dev, size_t bytes);

Fortran:

Interface:	subroutine acc_map_data(data_arg, data_dev, bytes)
	type(*), dimension(*) :: data_arg
	type(c_ptr), value :: data_dev
	integer(c_size_t), value :: bytes

Reference:

OpenACC specification v2.6, section 3.2.26. OpenACC specification v3.3, section 3.2.21.