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/*
* cl-utils.c
*
* OpenCL utility functions
*
* (c) 2006-2010 Thomas White <taw@physics.org>
*
* Part of CrystFEL - crystallography with a FEL
*
*/
#include <stdlib.h>
#include <stdio.h>
#include <string.h>
#include <CL/cl.h>
#include "utils.h"
const char *clError(cl_int err)
{
switch ( err ) {
case CL_SUCCESS : return "no error";
case CL_INVALID_PLATFORM : return "invalid platform";
case CL_INVALID_KERNEL : return "invalid kernel";
case CL_INVALID_ARG_INDEX : return "invalid argument index";
case CL_INVALID_ARG_VALUE : return "invalid argument value";
case CL_INVALID_MEM_OBJECT : return "invalid memory object";
case CL_INVALID_SAMPLER : return "invalid sampler";
case CL_INVALID_ARG_SIZE : return "invalid argument size";
case CL_INVALID_COMMAND_QUEUE : return "invalid command queue";
case CL_INVALID_CONTEXT : return "invalid context";
case CL_INVALID_VALUE : return "invalid value";
case CL_INVALID_EVENT_WAIT_LIST : return "invalid wait list";
case CL_MAP_FAILURE : return "map failure";
case CL_MEM_OBJECT_ALLOCATION_FAILURE : return "object allocation failure";
case CL_OUT_OF_HOST_MEMORY : return "out of host memory";
case CL_OUT_OF_RESOURCES : return "out of resources";
case CL_INVALID_KERNEL_NAME : return "invalid kernel name";
case CL_INVALID_KERNEL_ARGS : return "invalid kernel arguments";
default :
ERROR("Error code: %i\n", err);
return "unknown error";
}
}
cl_device_id get_first_dev(cl_context ctx)
{
cl_device_id dev;
cl_int r;
r = clGetContextInfo(ctx, CL_CONTEXT_DEVICES, sizeof(dev), &dev, NULL);
if ( r != CL_SUCCESS ) {
ERROR("Couldn't get device\n");
return 0;
}
return dev;
}
static void show_build_log(cl_program prog, cl_device_id dev)
{
cl_int r;
char log[4096];
size_t s;
r = clGetProgramBuildInfo(prog, dev, CL_PROGRAM_BUILD_LOG, 4096, log,
&s);
STATUS("%s\n", log);
}
cl_program load_program(const char *filename, cl_context ctx,
cl_device_id dev, cl_int *err)
{
FILE *fh;
cl_program prog;
char *source;
size_t len;
cl_int r;
fh = fopen(filename, "r");
if ( fh == NULL ) {
ERROR("Couldn't open '%s'\n", filename);
*err = CL_INVALID_PROGRAM;
return 0;
}
source = malloc(16384);
len = fread(source, 1, 16383, fh);
fclose(fh);
source[len] = '\0';
prog = clCreateProgramWithSource(ctx, 1, (const char **)&source,
NULL, err);
if ( *err != CL_SUCCESS ) {
ERROR("Couldn't load source\n");
return 0;
}
r = clBuildProgram(prog, 0, NULL,
"-Werror -I"DATADIR"/crystfel/ -cl-no-signed-zeros",
NULL, NULL);
if ( r != CL_SUCCESS ) {
ERROR("Couldn't build program '%s'\n", filename);
show_build_log(prog, dev);
*err = r;
return 0;
}
free(source);
*err = CL_SUCCESS;
return prog;
}
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