func CreateContextFromTypeUnsafe(properties *C.cl_context_properties, device_type C.cl_device_type, pfn_notify CL_ctx_notify, user_data unsafe.Pointer) (*Context, error) {
var err C.cl_int
var clContext C.cl_context
if pfn_notify != nil {
var c_user_data []unsafe.Pointer
c_user_data = make([]unsafe.Pointer, 2)
c_user_data[0] = user_data
c_user_data[1] = unsafe.Pointer(&pfn_notify)
ctx_notify[c_user_data[1]] = pfn_notify
clContext = C.CLCreateContextFromType(properties, device_type, unsafe.Pointer(&c_user_data), &err)
} else {
clContext = C.clCreateContextFromType(properties, device_type, nil, nil, &err)
}
if err != C.CL_SUCCESS {
return nil, toError(err)
}
if clContext == nil {
return nil, ErrUnknown
}
contextTmp := &Context{clContext: clContext, devices: nil}
cDevices, errD := contextTmp.GetDevices()
if errD != nil {
runtime.SetFinalizer(contextTmp, releaseContext)
return contextTmp, toError(err)
}
context := &Context{clContext: clContext, devices: cDevices}
runtime.SetFinalizer(context, releaseContext)
return context, nil
}
func CreateContext(platform *Platform, devType DeviceType) *Context {
var ctx Context
var error C.cl_int
properties := []C.cl_context_properties{CL_CONTEXT_PLATFORM, C.platform2property(platform.item), C.cl_context_properties(0)}
ctx.item = C.clCreateContextFromType(&properties[0], C.cl_device_type(devType), nil, nil, &error)
fmt.Printf("Context error:%d\n", error)
return &ctx
}
func CLCreateContextFromType(properties []CL_context_properties,
device_type CL_device_type,
pfn_notify CL_ctx_notify,
user_data unsafe.Pointer,
errcode_ret *CL_int) CL_context {
var c_errcode_ret C.cl_int
var c_context C.cl_context
if pfn_notify == nil && user_data != nil {
c_errcode_ret = CL_INVALID_VALUE
c_context = nil
} else {
var c_properties []C.cl_context_properties
var c_properties_ptr *C.cl_context_properties
if properties != nil {
c_properties = make([]C.cl_context_properties, len(properties))
for i := 0; i < len(properties); i++ {
c_properties[i] = C.cl_context_properties(properties[i])
}
c_properties_ptr = &c_properties[0]
} else {
c_properties_ptr = nil
}
if pfn_notify != nil {
//var c_user_data []unsafe.Pointer
//c_user_data = make([]unsafe.Pointer, 2)
arr := C.allocArray(2)
c_user_data := (*[2]C.pVoid)(unsafe.Pointer(arr))[:]
c_user_data[0] = (C.pVoid)(user_data)
c_user_data[1] = (C.pVoid)(unsafe.Pointer(&pfn_notify))
ctx_notify[unsafe.Pointer(&pfn_notify)] = pfn_notify
c_context = C.CLCreateContextFromType(c_properties_ptr,
C.cl_device_type(device_type),
unsafe.Pointer(&c_user_data),
&c_errcode_ret)
C.freeArray(arr)
} else {
c_context = C.clCreateContextFromType(c_properties_ptr,
C.cl_device_type(device_type),
nil,
nil,
&c_errcode_ret)
}
}
if errcode_ret != nil {
*errcode_ret = CL_int(c_errcode_ret)
}
return CL_context{c_context}
}
// see https://www.khronos.org/registry/cl/sdk/1.1/docs/man/xhtml/clCreateContextFromType.html
func CreateContextFromType(properties *ContextProperties, deviceType DeviceType, notify func(string, unsafe.Pointer, uint64, interface{}), userdata interface{}, errcode *ErrorCode) Context {
ctx := gocontext{nil, notify, userdata}
var f *[0]byte
var u unsafe.Pointer
if notify != nil {
f = (*[0]byte)(C.contextErrorCallback)
u = unsafe.Pointer(&ctx)
}
ctx.clContext = C.clCreateContextFromType((*C.cl_context_properties)(unsafe.Pointer(properties)), C.cl_device_type(deviceType), f, u, (*C.cl_int)(unsafe.Pointer(errcode)))
return Context(&ctx)
}
func CLCreateContextFromType(properties []CL_context_properties,
device_type CL_device_type,
pfn_notify CL_ctx_notify,
user_data unsafe.Pointer,
errcode_ret *CL_int) CL_context {
var c_errcode_ret C.cl_int
var c_context C.cl_context
if pfn_notify == nil && user_data != nil {
c_errcode_ret = CL_INVALID_VALUE
c_context = nil
} else {
var c_properties []C.cl_context_properties
var c_properties_ptr *C.cl_context_properties
if properties != nil {
c_properties = make([]C.cl_context_properties, len(properties))
for i := 0; i < len(properties); i++ {
c_properties[i] = C.cl_context_properties(properties[i])
}
c_properties_ptr = &c_properties[0]
} else {
c_properties_ptr = nil
}
if pfn_notify != nil {
var c_user_data []unsafe.Pointer
c_user_data = make([]unsafe.Pointer, 2)
c_user_data[0] = user_data
c_user_data[1] = unsafe.Pointer(&pfn_notify)
ctx_notify[c_user_data[1]] = pfn_notify
c_context = C.CLCreateContextFromType(c_properties_ptr,
C.cl_device_type(device_type),
unsafe.Pointer(&c_user_data),
&c_errcode_ret)
} else {
c_context = C.clCreateContextFromType(c_properties_ptr,
C.cl_device_type(device_type),
nil,
nil,
&c_errcode_ret)
}
}
if errcode_ret != nil {
*errcode_ret = CL_int(c_errcode_ret)
}
return CL_context{c_context}
}
func NewContextOfType(params map[ContextParameter]interface{}, t DeviceType) (*Context, error) {
var c_params []C.cl_context_properties
var propErr error
if c_params, propErr = createParameters(params); propErr != nil {
return nil, propErr
}
var c_context C.cl_context
var err C.cl_int
if c_context = C.clCreateContextFromType(&c_params[0], C.cl_device_type(t), nil, nil, &err); err != C.CL_SUCCESS {
return nil, Cl_error(err)
}
context := &Context{id: c_context}
runtime.SetFinalizer(context, (*Context).release)
return context, nil
}