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instr-ocl.c
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instr-ocl.c
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#include <CL/cl.h>
#include "ldChecker.h"
#include "ocl_helper.h"
#include <inttypes.h>
#include <signal.h>
#include <pthread.h>
#ifdef __GNUC__
#define UNUSED __attribute__ ((unused))
#else
#define UNUSED
#endif
#define NS_TO_MS(_ns_) ((_ns_)/1000000)
const char* clewErrorString (cl_int error);
static int mocl_errcode;
static inline cl_int _clCheck(cl_int errcode, const char *file, int line, const char *func) {
mocl_errcode = errcode;
if (mocl_errcode != CL_SUCCESS) {
error ("%d/%s at %s:%d %s\n", mocl_errcode,
clewErrorString(mocl_errcode),
file, line, func);
}
return errcode;
}
#define clCheck(to_check) _clCheck(to_check,__FILE__, __LINE__, __func__)
#define clck_(var) var); clCheck(*var
struct ld_ocl_s {
cl_context context;
cl_command_queue command_queue;
} ldOclEnv;
struct ld_program_s {
unsigned int uid;
cl_program handle;
char *source;
unsigned int released;
};
struct ld_mem_offset_s {
unsigned int uid;
cl_mem handle;
size_t size;
ld_flags flags;
size_t offset;
unsigned int released;
struct ld_mem_s *parent;
};
struct ld_queue_s {
unsigned int uid;
cl_command_queue handle;
};
cl_command_queue (*real_clCreateCommandQueue)(cl_context context,
cl_device_id device,
cl_command_queue_properties properties,
cl_int *errcode_ret);
cl_int (*real_clFinish) (cl_command_queue command_queue);
cl_int (*real_clReleaseCommandQueue) (cl_command_queue command_queue);
cl_int (*real_clSetKernelArg) (cl_kernel kernel, cl_uint arg_index,
size_t arg_size, const void *arg_value);
cl_mem (*real_clCreateBuffer) (cl_context context, cl_mem_flags flags,
size_t size, void *host_ptr,
cl_int *errcode_ret);
cl_mem (*real_clCreateSubBuffer) (cl_mem buffer,
cl_mem_flags flags,
cl_buffer_create_type buffer_create_type,
const void *buffer_create_info,
cl_int *errcode_ret);
cl_int (*real_clReleaseMemObject) (cl_mem memobj);
cl_kernel (*real_clCreateKernel) (cl_program program, const char *kernel_name,
cl_int *errcode_ret);
cl_program (*real_clCreateProgramWithSource) (cl_context context,
cl_uint count,
const char **strings,
const size_t *lengths,
cl_int *errcode_ret);
cl_int (*real_clEnqueueNDRangeKernel) (cl_command_queue command_queue,
cl_kernel kernel, cl_uint work_dim,
const size_t *global_work_offset,
const size_t *global_work_size,
const size_t *local_work_size,
cl_uint num_events_in_wait_list,
const cl_event *event_wait_list,
cl_event *event);
cl_int (*real_clEnqueueWriteBuffer) (cl_command_queue command_queue,
cl_mem buffer,
cl_bool blocking_write,
size_t offset,
size_t size,
const void *ptr,
cl_uint num_events_in_wait_list,
const cl_event *event_wait_list,
cl_event *event);
cl_int (*real_clEnqueueReadBuffer) (cl_command_queue command_queue,
cl_mem buffer,
cl_bool blocking_read,
size_t offset,
size_t size,
void *ptr,
cl_uint num_events_in_wait_list,
const cl_event *event_wait_list,
cl_event *event);
cl_int (*real_clReleaseKernel) (cl_kernel kernel);
cl_int (*real_clReleaseProgram) (cl_program program);
struct ld_bindings_s ocl_bindings[] = {
{"clSetKernelArg", (void **) &real_clSetKernelArg},
{"clCreateBuffer", (void **) &real_clCreateBuffer},
{"clCreateSubBuffer", (void **) &real_clCreateSubBuffer},
{"clCreateKernel", (void **) &real_clCreateKernel},
{"clCreateProgramWithSource", (void **) &real_clCreateProgramWithSource},
{"clEnqueueNDRangeKernel", (void **) &real_clEnqueueNDRangeKernel},
{"clEnqueueWriteBuffer", (void **) &real_clEnqueueWriteBuffer},
{"clEnqueueReadBuffer", (void **) &real_clEnqueueReadBuffer},
{"clCreateCommandQueue", (void **) &real_clCreateCommandQueue},
{"clFinish", (void **) &real_clFinish},
{"clReleaseCommandQueue", (void **) &real_clReleaseCommandQueue},
{"clReleaseMemObject", (void **) &real_clReleaseMemObject},
{"clReleaseKernel", (void **) &real_clReleaseKernel},
{"clReleaseProgram", (void **) &real_clReleaseProgram},
{NULL, NULL}
};
CREATE_HASHMAP(program, cl_program, 100)
CREATE_HASHMAP(kernel, cl_kernel, 100)
CREATE_HASHMAP(mem, cl_mem, 400)
CREATE_HASHMAP(mem_offset, cl_mem, 200)
CREATE_HASHMAP(queue, cl_command_queue, 10)
/* ************************************************************************* */
static void sig_handler(int signum);
#if ENABLE_KERNEL_PROFILING == 1
pthread_mutex_t stats_lock;
static void print_statistics(int force);
#endif
int ocl_getBufferContent (struct ld_mem_s *ldBuffer, void *buffer,
size_t offset, size_t size);
int ocl_triggerKernelExecution (struct ld_kernel_s *ldKernel,
const struct work_size_s *work_sizes,
unsigned int work_dim);
void *ocl_setParameterValue (struct ld_kernel_s *ldKernel,
struct ld_kern_param_s *ldParam,
void *buffer, size_t size);
int ocl_getAndReleaseParameterValue (struct ld_kernel_s *ldKernel,
struct ld_kern_param_s *ldParam,
void *buffer_handle,
void *buffer, size_t size);
struct ld_mem_s *create_ocl_buffer (cl_mem handle);
void init_ocl_ldchecker(void) {
struct callback_s callbacks = {ocl_getBufferContent, ocl_setParameterValue, ocl_getAndReleaseParameterValue, ocl_triggerKernelExecution};
#if ENABLE_KERNEL_PROFILING == 1
pthread_mutex_init(&stats_lock, NULL);
signal(SIGUSR1, sig_handler);
#endif
init_ldchecker(callbacks, ocl_bindings);
create_ocl_buffer(NULL);
ocl_init_helper();
}
void UNUSED sig_handler(int signum) {
switch(signum) {
#if ENABLE_KERNEL_PROFILING == 1
case SIGUSR1:
print_statistics(1);
break;
#endif
}
}
cl_command_queue clCreateCommandQueue(cl_context context,
cl_device_id device,
cl_command_queue_properties properties,
cl_int *errcode_ret)
{
init_ocl_ldchecker();
#if ENABLE_KERNEL_PROFILING == 1
properties |= CL_QUEUE_PROFILING_ENABLE;
#endif
ldOclEnv.command_queue = real_clCreateCommandQueue(context, device,
properties, errcode_ret);
ldOclEnv.context = context;
return ldOclEnv.command_queue;
}
cl_int clFinish (cl_command_queue command_queue) {
return real_clFinish(command_queue);
}
#if ENABLE_KERNEL_PROFILING == 1
static void print_statistics(int force) {
if (force || IS_MPI_MASTER()) {
int i;
pthread_mutex_lock(&stats_lock);
for (i = 0; i < kernel_elt_count; i++) {
struct ld_kernel_s *ldKernel = &kernel_map[i];
if (ldKernel->exec_counter == 0) {
continue;
}
info("Kernel %s:\n", ldKernel->name);
info("\t- was executed %d times\n", ldKernel->exec_counter);
unsigned long avg_ns = ldKernel->exec_span_ns / ldKernel->exec_counter;
info("\t- it took %"PRId64"ms (%"PRId64"ns).\n", NS_TO_MS(ldKernel->exec_span_ns), ldKernel->exec_span_ns);
info("\t- average time was %"PRId64"ms (%"PRId64"ns).\n", NS_TO_MS(avg_ns), avg_ns);
}
info("---------------\n");
pthread_mutex_unlock(&stats_lock);
}
}
#endif
cl_int clReleaseCommandQueue (cl_command_queue command_queue) {
#if ENABLE_KERNEL_PROFILING == 1
print_statistics(0);
#endif
#if ENABLE_LEAK_DETECTION == 1
if (IS_MPI_MASTER()) {
int i;
struct ld_program_s *ldprogram;
struct ld_kernel_s *ldkernel;
struct ld_mem_s *ldmem;
//struct ld_mem_offset_s *ldmem_offset;
#define CHECK_ALL_RELEASED(_NAME) \
FOR_ALL_MAP_ELTS(i, ld##_NAME, _NAME) { \
if (!ld##_NAME->released) { \
warning("Memory leak: " # _NAME \
" %p not released. (#%d) %d\n", \
ld##_NAME->handle, ld##_NAME->uid, ld##_NAME->released); \
} \
} \
CHECK_ALL_RELEASED(program);
CHECK_ALL_RELEASED(kernel);
CHECK_ALL_RELEASED(mem);
//CHECK_ALL_RELEASED(mem_offset);
}
#endif
return real_clReleaseCommandQueue (command_queue);
}
/* ************************************************************************* */
cl_program clCreateProgramWithSource (cl_context context,
cl_uint count,
const char **strings,
const size_t *lengths,
cl_int *errcode_ret)
{
struct ld_program_s *program = get_next_program_spot();
program->handle = real_clCreateProgramWithSource(context, count, strings,
lengths, errcode_ret);
if (!IS_MPI_MASTER()) {
program_elt_count--;
return program->handle;
}
ocl_handle_program(program->handle, count, strings, lengths);
return program->handle;
}
cl_int clReleaseProgram (cl_program program) {
struct ld_program_s *ldProgram = find_program_entry(program);
assert(ldProgram);
ldProgram->released = 1;
return real_clReleaseProgram (program);
}
/* ************************************************************************* */
static inline ld_flags ocl_buffer_flags_to_ld (cl_mem_flags flags) {
ld_flags ldFlags = 0;
if (flags & CL_MEM_WRITE_ONLY) ldFlags |= LD_FLAG_WRITE_ONLY;
if (flags & CL_MEM_READ_ONLY) ldFlags |= LD_FLAG_READ_ONLY;
if (flags & CL_MEM_READ_WRITE) ldFlags |= LD_FLAG_READ_WRITE;
return ldFlags;
}
struct ld_mem_s *create_ocl_buffer(cl_mem handle) {
static unsigned int buffer_uid = -1;
struct ld_mem_s *ldBuffer = get_next_mem_spot();
ldBuffer->handle = handle;
ldBuffer->uid = buffer_uid++;
return ldBuffer;
}
cl_mem clCreateBuffer (cl_context context, cl_mem_flags flags, size_t size,
void *host_ptr, cl_int *errcode_ret)
{
struct ld_mem_s *buffer;
if (flags & CL_MEM_ALLOC_HOST_PTR) {
goto unhandled;
}
buffer = create_ocl_buffer(real_clCreateBuffer(context, flags, size, host_ptr, errcode_ret));
buffer->size = size;
buffer->flags = ocl_buffer_flags_to_ld(flags);
buffer_created_event(buffer);
return buffer->handle;
unhandled:
return real_clCreateBuffer(context, flags, size, host_ptr, errcode_ret);
}
/* ************************************************************************* */
cl_mem clCreateSubBuffer (cl_mem buffer,
cl_mem_flags flags,
cl_buffer_create_type buffer_create_type,
const void *buffer_create_info,
cl_int *errcode_ret)
{
struct ld_mem_s *ldBuffer = find_mem_entry(buffer);
struct ld_mem_offset_s *ldSubBuffer = NULL;
cl_mem subbuffer;
int i;
assert(ldBuffer);
subbuffer = real_clCreateSubBuffer(buffer, flags, buffer_create_type,
buffer_create_info, errcode_ret);
if (subbuffer == buffer) {
return subbuffer;
}
for (i = 0; i < mem_offset_elt_count; i++) {
if (mem_offset_map[i].released) {
ldSubBuffer = &mem_offset_map[i];
}
}
if (!ldSubBuffer) {
ldSubBuffer = get_next_mem_offset_spot();
}
assert(ldSubBuffer);
ldSubBuffer->handle = subbuffer;
ldSubBuffer->flags = ocl_buffer_flags_to_ld(flags);
ldSubBuffer->offset = ((cl_buffer_region *) buffer_create_info)->origin;
ldSubBuffer->size = ((cl_buffer_region*) buffer_create_info)->size;
ldSubBuffer->parent = ldBuffer;
ldSubBuffer->released = 0;
subbuffer_created_event(ldBuffer, ldSubBuffer->offset);
return subbuffer;
}
/* ************************************************************************* */
cl_int clReleaseMemObject (cl_mem memobj) {
struct ld_mem_offset_s *ldSubBuffer = find_mem_offset_entry(memobj);
struct ld_mem_s *ldBuffer = find_mem_entry(memobj);
if (ldSubBuffer) {
ldSubBuffer->released = 1;
}
if (ldBuffer) {
buffer_released(ldBuffer);
}
//ignore other buffer types
return real_clReleaseMemObject (memobj);
}
/* ************************************************************************* */
cl_kernel clCreateKernel (cl_program program,
const char *kernel_name,
cl_int *errcode_ret)
{
int nb_params, i;
char **types_and_names;
struct ld_kernel_s *ldKernel = get_next_kernel_spot();
ldKernel->handle = real_clCreateKernel(program, kernel_name, errcode_ret);
ldKernel->name = kernel_name;
if (!IS_MPI_MASTER()) {
kernel_elt_count--;
return ldKernel->handle;
}
types_and_names = ocl_handle_create_kernel(program, ldKernel->handle, kernel_name);
for (nb_params = 0; types_and_names[nb_params]; nb_params++);
nb_params /= 2;
ldKernel->nb_params = nb_params;
ldKernel->params = malloc(sizeof(struct ld_kern_param_s) * nb_params);
for (i = 0; i < nb_params; i++) {
ldKernel->params[i].name = types_and_names[i*2 + 1];
ldKernel->params[i].type = types_and_names[i*2];
ldKernel->params[i].index = i;
}
kernel_created_event(ldKernel);
return ldKernel->handle;
}
cl_int clReleaseKernel (cl_kernel kernel) {
struct ld_kernel_s *ldKernel = find_kernel_entry(kernel);
assert(ldKernel);
ldKernel->released = 1;
return real_clReleaseKernel (kernel);
}
/* ************************************************************************* */
#define DEFAULT_SIZE(size) if (!size) size = 4;
int ocl_getBufferContent (struct ld_mem_s *ldBuffer, void *buffer,
size_t offset, size_t size)
{
if (size == 0) {
return 1;
}
//debug("*** Read %zub from buffer #%d at +%zub *** \n", size, ldBuffer->uid, offset);
cl_int err = real_clEnqueueReadBuffer(ldOclEnv.command_queue,
ldBuffer->handle, CL_TRUE,
offset, size, buffer,
0, NULL, NULL);
assert(err == CL_SUCCESS);
return err == CL_SUCCESS;
}
void *ocl_setParameterValue (struct ld_kernel_s *ldKernel,
struct ld_kern_param_s *ldParam,
void *buffer, size_t size)
{
cl_mem mem_obj = (void *) -1;
cl_int errcode_ret;
if (ldParam->is_pointer) {
DEFAULT_SIZE(size)
mem_obj = real_clCreateBuffer(ldOclEnv.context, CL_MEM_READ_WRITE, size, NULL, clck_(&errcode_ret));
clCheck(real_clEnqueueWriteBuffer(ldOclEnv.command_queue,
(cl_mem) mem_obj,
CL_TRUE,
0, size, buffer,
0, NULL, NULL));
buffer = &mem_obj;
size = sizeof(cl_mem);
}
if (size == 0 && strstr(ldParam->name, "_tex")) {
cl_image_format format = {CL_R, CL_UNSIGNED_INT32};
#pragma GCC diagnostic push
#pragma GCC diagnostic ignored "-Wdeprecated-declarations"
mem_obj = clCreateImage2D (ldOclEnv.context, CL_MEM_READ_ONLY, &format, 100, 1, 0, &format, clck_(&errcode_ret));
#pragma GCC diagnostic pop
buffer = &mem_obj;
size = sizeof(cl_mem);
}
clCheck(real_clSetKernelArg ((cl_kernel) ldKernel->handle, ldParam->index,
size, buffer));
return mem_obj;
}
int ocl_triggerKernelExecution (struct ld_kernel_s *ldKernel,
const struct work_size_s *work_sizes,
unsigned int work_dim)
{
static size_t global_work_size[MAX_WORK_DIM], local_work_size[MAX_WORK_DIM];
unsigned int i;
for (i = 0; i < work_dim; i++) {
local_work_size[i] = work_sizes->local[i];
global_work_size[i] = work_sizes->global[i] * work_sizes->local[i];
}
clCheck(real_clEnqueueNDRangeKernel(ldOclEnv.command_queue, (cl_kernel) ldKernel->handle,
work_dim, NULL,
global_work_size,
local_work_size,
0, NULL, NULL));
return 1;
}
int ocl_getAndReleaseParameterValue (struct ld_kernel_s *ldKernel,
struct ld_kern_param_s *ldParam,
void *buffer_handle,
void *buffer, size_t size)
{
if (buffer_handle == (void *) -1) {
return 1;
}
if (size == 0) {
goto do_release;
}
clCheck(real_clEnqueueReadBuffer(ldOclEnv.command_queue,
(cl_mem) buffer_handle,
CL_TRUE,
0, size, buffer,
0, NULL, NULL));
do_release:
clCheck(real_clReleaseMemObject((cl_mem) buffer_handle));
return 1;
}
cl_int clSetKernelArg (cl_kernel kernel,
cl_uint arg_index,
size_t arg_size,
const void *arg_value) {
struct ld_kernel_s *ldKernel = find_kernel_entry(kernel);
struct ld_kern_param_s *ldParam;
assert(ldKernel);
ldParam = &ldKernel->params[arg_index];
if (ldParam->is_pointer) {
struct ld_mem_s *ldBuffer = find_mem_entry(arg_value == NULL ? NULL : *(cl_mem *) arg_value);
size_t offset = 0;
if (!ldBuffer) {
struct ld_mem_offset_s *ldSubBuffer = find_mem_offset_entry(*(cl_mem *) arg_value);
assert(ldSubBuffer);
ldBuffer = ldSubBuffer->parent;
offset = ldSubBuffer->offset;
}
assert(ldBuffer);
kernel_set_buffer_arg_event (ldKernel, ldParam, arg_index, ldBuffer, offset);
} else {
kernel_set_scalar_arg_event (ldKernel, ldParam, arg_index, (const void **) arg_value);
}
return real_clSetKernelArg(kernel, arg_index, arg_size, arg_value);
}
/* ************************************************************************* */
#if ENABLE_KERNEL_PROFILING == 1
static void CL_CALLBACK kernel_profiler_cb (cl_event event,
cl_int event_command_exec_status,
void *user_data)
{
static cl_ulong tstart, tstop, len;
cl_int refcnt;
struct ld_kernel_s *ldKernel = (struct ld_kernel_s *) user_data;
pthread_mutex_lock(&stats_lock);
clReleaseEvent(event);
clCheck(clGetEventProfilingInfo(event, CL_PROFILING_COMMAND_END, sizeof(tstop), &tstop, NULL));
clCheck(clGetEventProfilingInfo(event, CL_PROFILING_COMMAND_START, sizeof(tstart), &tstart, NULL));
clCheck(clGetEventInfo(event, CL_EVENT_REFERENCE_COUNT, sizeof(refcnt), &refcnt, NULL));
len = tstop - tstart;
if (tstart > tstop) {
len = tstart - tstop;
}
if (tstart == 0ul || tstop == 0ul) {
// invalid timestamps
len = 0;
}
ldKernel->exec_span_ns += len;
pthread_mutex_unlock(&stats_lock);
}
#endif
cl_int clEnqueueNDRangeKernel (cl_command_queue command_queue,
cl_kernel kernel,
cl_uint work_dim,
const size_t *global_work_offset,
const size_t *global_work_size,
const size_t *local_work_size,
cl_uint num_events_in_wait_list,
const cl_event *event_wait_list,
cl_event *event)
{
static struct work_size_s work_sizes;
struct ld_kernel_s *ldKernel = find_kernel_entry(kernel);
int i;
cl_int errcode;
if (num_events_in_wait_list) {
clCheck(clWaitForEvents(num_events_in_wait_list, event_wait_list));
}
assert(ldKernel);
for (i = 0; i < work_dim; i++) {
work_sizes.local[i] = local_work_size[i];
work_sizes.global[i] = global_work_size[i]/work_sizes.local[i];
}
#if ENABLE_KERNEL_PROFILING == 1
static cl_event kern_event;
if (!event) {
event = &kern_event; // scope of the event is limited to this function.
}
#endif
kernel_executed_event(ldKernel, &work_sizes, work_dim);
errcode = real_clEnqueueNDRangeKernel(command_queue, kernel, work_dim,
global_work_offset, global_work_size,
local_work_size, num_events_in_wait_list,
event_wait_list, event);
#if ENABLE_KERNEL_PROFILING == 1
clCheck(errcode);
clRetainEvent(*event);
clSetEventCallback(*event, CL_COMPLETE, kernel_profiler_cb, ldKernel);
#endif
#if FORCE_FINISH_KERNEL
real_clFinish(command_queue);
#endif
kernel_finished_event(ldKernel, &work_sizes, work_dim);
return errcode;
}
/* ************************************************************************* */
struct ld_mem_s *readWriteMemory(cl_mem buffer, void **ptr, int direction,
size_t size, size_t offset)
{
struct ld_mem_s *ldBuffer = find_mem_entry(buffer);
size_t real_offset = offset;
if (!ldBuffer) {
struct ld_mem_offset_s *ldSubBuffer = find_mem_offset_entry(buffer);
assert(ldSubBuffer);
ldBuffer = ldSubBuffer->parent;
real_offset += ldSubBuffer->offset;
}
assert(ldBuffer);
buffer_copy_event(ldBuffer, direction, (void **) ptr, size, real_offset);
return ldBuffer;
}
cl_int clEnqueueWriteBuffer (cl_command_queue command_queue,
cl_mem buffer,
cl_bool blocking_write,
size_t offset,
size_t size,
const void *ptr,
cl_uint num_events_in_wait_list,
const cl_event *event_wait_list,
cl_event *event)
{
readWriteMemory(buffer, (void **) ptr, LD_WRITE, size, offset);
return real_clEnqueueWriteBuffer(command_queue, buffer, blocking_write,
offset, size, ptr, num_events_in_wait_list,
event_wait_list, event);
}
/* ************************************************************************* */
cl_int clEnqueueReadBuffer (cl_command_queue command_queue,
cl_mem buffer,
cl_bool blocking_read,
size_t offset,
size_t size,
void *ptr,
cl_uint num_events_in_wait_list,
const cl_event *event_wait_list,
cl_event *event)
{
cl_int errcode;
errcode = real_clEnqueueReadBuffer(command_queue, buffer, CL_TRUE /* blocking_read */,
offset, size, ptr, num_events_in_wait_list,
event_wait_list, event);
readWriteMemory(buffer, ptr, LD_READ, size, offset);
return errcode;
}
/* The OpenCL Extension Wrangler Library
* https://code.google.com/p/clew/
* MIT License
* */
const char* clewErrorString (cl_int error) {
static const char* strings[] = {
// Error Codes
"CL_SUCCESS" // 0
, "CL_DEVICE_NOT_FOUND" // -1
, "CL_DEVICE_NOT_AVAILABLE" // -2
, "CL_COMPILER_NOT_AVAILABLE" // -3
, "CL_MEM_OBJECT_ALLOCATION_FAILURE" // -4
, "CL_OUT_OF_RESOURCES" // -5
, "CL_OUT_OF_HOST_MEMORY" // -6
, "CL_PROFILING_INFO_NOT_AVAILABLE" // -7
, "CL_MEM_COPY_OVERLAP" // -8
, "CL_IMAGE_FORMAT_MISMATCH" // -9
, "CL_IMAGE_FORMAT_NOT_SUPPORTED" // -10
, "CL_BUILD_PROGRAM_FAILURE" // -11
, "CL_MAP_FAILURE" // -12
, "" // -13
, "" // -14
, "" // -15
, "" // -16
, "" // -17
, "" // -18
, "" // -19
, "" // -20
, "" // -21
, "" // -22
, "" // -23
, "" // -24
, "" // -25
, "" // -26
, "" // -27
, "" // -28
, "" // -29
, "CL_INVALID_VALUE" // -30
, "CL_INVALID_DEVICE_TYPE" // -31
, "CL_INVALID_PLATFORM" // -32
, "CL_INVALID_DEVICE" // -33
, "CL_INVALID_CONTEXT" // -34
, "CL_INVALID_QUEUE_PROPERTIES" // -35
, "CL_INVALID_COMMAND_QUEUE" // -36
, "CL_INVALID_HOST_PTR" // -37
, "CL_INVALID_MEM_OBJECT" // -38
, "CL_INVALID_IMAGE_FORMAT_DESCRIPTOR" // -39
, "CL_INVALID_IMAGE_SIZE" // -40
, "CL_INVALID_SAMPLER" // -41
, "CL_INVALID_BINARY" // -42
, "CL_INVALID_BUILD_OPTIONS" // -43
, "CL_INVALID_PROGRAM" // -44
, "CL_INVALID_PROGRAM_EXECUTABLE" // -45
, "CL_INVALID_KERNEL_NAME" // -46
, "CL_INVALID_KERNEL_DEFINITION" // -47
, "CL_INVALID_KERNEL" // -48
, "CL_INVALID_ARG_INDEX" // -49
, "CL_INVALID_ARG_VALUE" // -50
, "CL_INVALID_ARG_SIZE" // -51
, "CL_INVALID_KERNEL_ARGS" // -52
, "CL_INVALID_WORK_DIMENSION" // -53
, "CL_INVALID_WORK_GROUP_SIZE" // -54
, "CL_INVALID_WORK_ITEM_SIZE" // -55
, "CL_INVALID_GLOBAL_OFFSET" // -56
, "CL_INVALID_EVENT_WAIT_LIST" // -57
, "CL_INVALID_EVENT" // -58
, "CL_INVALID_OPERATION" // -59
, "CL_INVALID_GL_OBJECT" // -60
, "CL_INVALID_BUFFER_SIZE" // -61
, "CL_INVALID_MIP_LEVEL" // -62
, "CL_INVALID_GLOBAL_WORK_SIZE" // -63
, "CL_UNKNOWN_ERROR_CODE"
};
if (error >= -63 && error <= 0) {
return strings[-error];
} else {
return strings[64];
}
}