opencl kernel file not entirely loading - c++

Question

once my opencl kernel file exceeds a certain length, it is not correctly loaded anymore. The program build log (clBuildProgram) returns lots of errors, where it seems like there are cuts in the middle of a line (example int test; -> error unknown identifier 't').
Here is the function with which I load the program source:
char * load_program_source(const char *filename)
{
FILE *fh;
char* source;
long lSize;
fh = fopen(filename, "r");
if (fh == 0)
return 0;
//Get Filesize
fseek(fh,0,SEEK_END);
lSize = ftell(fh);
rewind(fh);
source = (char *) malloc(lSize);
memset(source,'\0',lSize);
fread(source, sizeof(char), lSize, fh);
return source;
}
And here is the code where the program is build:
//load program from file, compile kernels
cl_program program[1];
cl_kernel kernel[13];
const char * filename = "addKernel.c";
char *program_source = load_program_source(filename);
program[0] = clCreateProgramWithSource(context, 1, (const char**)&program_source,
NULL, &err);
if (err == CL_OUT_OF_HOST_MEMORY){
textBox1->Text += "Error: out of Host Memory!\r\n";
}
else if (err == CL_INVALID_CONTEXT){
textBox1->Text += "Error: invalid Context!\r\n";
}
else if (err == CL_INVALID_VALUE){
textBox1->Text += "Error: invalid Value!\r\n";
}
err = clBuildProgram(program[0], 0, NULL, NULL, NULL, NULL);
textBox1->Text += "Program build error: " + err + "\r\n";
cl_build_status status;
size_t logSize;
clGetProgramBuildInfo(program[0], deviceID[0], CL_PROGRAM_BUILD_STATUS, sizeof(cl_build_status), &status, NULL);
clGetProgramBuildInfo(program[0], deviceID[0], CL_PROGRAM_BUILD_LOG, 0, NULL, &logSize);
char* programLog;
programLog = (char*)calloc(logSize + 1, sizeof(char));
clGetProgramBuildInfo(program[0], deviceID[0], CL_PROGRAM_BUILD_LOG, logSize + 1, programLog, NULL);
std::string tmp = std::string(programLog);
this->textBox1->Text += "Program build info: error=" + err + ", status=" + status + ", programLog:\r\n" + gcnew System::String(tmp.c_str()) + "\r\n" + "In case of an error please make sure that openCL has been initialized\r\n";
I would be happy if you cound help me out!

Answer 1

Try following code. If it doesn't help, attach your kernel source
File reading:
static char* Read_Source_File(const char *filename)
{
long int
size = 0,
res = 0;
char *src = NULL;
FILE *file = fopen(filename, "rb");
if (!file) return NULL;
if (fseek(file, 0, SEEK_END))
{
fclose(file);
return NULL;
}
size = ftell(file);
if (size == 0)
{
fclose(file);
return NULL;
}
rewind(file);
src = (char *)calloc(size + 1, sizeof(char));
if (!src)
{
src = NULL;
fclose(file);
return src;
}
res = fread(src, 1, sizeof(char) * size, file);
if (res != sizeof(char) * size)
{
fclose(file);
free(src);
return src;
}
src[size] = '\0'; /* NULL terminated */
fclose(file);
return src;
}
Programm building:
cl_int ret;
program = clCreateProgramWithSource(
context, 1, (const char**)&src_file, NULL, &ret);
if(ret != CL_SUCCESS){
fprintf(stderr, "Error with code %d happened.\n", ret);
}
// Warnings will be treated like errors, this is useful for debug
char build_params[] = {"-Werror"};
ret = clBuildProgram(program, 0, NULL, build_params, NULL, NULL);
if (ret != CL_SUCCESS)
{
size_t len = 0;
char *buffer;
clGetProgramBuildInfo(program,
device_id, CL_PROGRAM_BUILD_LOG, 0, NULL, &len);
buffer = calloc(len, sizeof(char));
clGetProgramBuildInfo(program,
device_id, CL_PROGRAM_BUILD_LOG, len, buffer, NULL);
fprintf(stderr, "%s\n", buffer);
free(buffer);
}