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OpenCL callback function

Shweta_Shree
Beginner
1,056 Views

void CL_CALLBACK myCallback( cl_event event,cl_int cmd_exec_status, void *user_data)

is giving an error on compilation.

Also, clSetEventCallback() statement is giving an error 'clSetEventCallback' identifier not found.
Does this mean that Intel SDK does not support callback functions?

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4 Replies
Evgeny_F_Intel
Employee
1,056 Views
Hi,

Intel SDK does support callback functions.

Can you provide more details on the problem?

Which development environment are you using?
Problematic code sample?

Thanks,
Evgeny
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Shweta_Shree
Beginner
1,056 Views
Thank you Evgeny.
Sorry for the delayed reply.

Environment:
OS: Windows
CPU: Intel Core 2 Duo

Sample Code:

#include

#include

#include "cl.h"

void CL_CALLBACK myCallback(cl_event evnt,cl_int cmd_sts,void *user_data);

int main(int argc, char** argv)

{

/* Find platform and devices
Create Context, Command queue, program andkernel.
Set arguments to the kernel
*/

ret = clEnqueueNDRangeKernel(cqCommandQueue, ckKernel, 1, NULL, &global_item_size, &local_item_size, 0, NULL, &event1);

ret = clSetEventCallback(event1, CL_COMPLETE, &myCallback, NULL);

/* Read result from buffer
Release resources.
*/

}

void myCallback(cl_event evnt,cl_int cmd_sts,void *user_data)

{

/* Do something */

}

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Evgeny_F_Intel
Employee
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The code looks fine.

Please check location of the cl.h.

Is it coming from Intel SDK?
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IDZ_A_Intel
Employee
1,056 Views
Oh thanks!

I just noticed that I had 2 cl.h files.
I did not check if they were different because i assumed, no matter what the .h files would be the same.

Thanks once again.
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