CODEWITHSUNDEEP
opencl
srccode
srccode

Reputation: 751

Equivalent of memcpy in opencl

I'm new to opencL and this question might look silly.

I have a kernel which takes two structures A and C. I want to copy contents of structure A to structure C.

Structure looks like below:

struct Block {

  bool used;
  int size;
  intptr_t data[1];

};


__kernel void function(__global struct Block *A, __global struct Block *C) {
//Do something on A
//COPY A to C by memcpy alternative
}

Is there any function like memcpy which I can use inside kernel?. I'm using opencl in integrated GPU with zero copy.

Or Do I have to copy block by block to structure C?.

Upvotes: 2

Views: 721

Answers (1)

0xF
0xF

Reputation: 3708

In your case you can simply assign the structures:

__kernel void function(__global struct Block *A, __global struct Block *C) {
  //Do something on A
  *C = *A;
}

It's same as in plain C, yet many programmers don't know they can assign structures and resort to memcpy.

Upvotes: 1

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