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#pragma once
#include <yql/essentials/public/udf/udf_registrator.h>
namespace NYql {
namespace NUdf {
inline constexpr char STANDART_STREAM_PROXY_INJECTION_SCRIPT[] =
R"(
# numpy on import may find installed openblas library and load it,
# which in turn causes it to start CPUCOUNT threads
# with approx. 40Mb memory reserved for each thread;
#
# See more detailed explanation here: https://st.yandex-team.ru/STATLIBS-1715#5bfc68ecbbc039001cec572a
#
# Thus, we reduce negative effects as much as possible
import os
os.environ['OPENBLAS_NUM_THREADS'] = '1'
# Following part allows us later to format tracebacks via sys.excepthook
# in thread-safe manner
import sys
import threading
if sys.version_info >= (3, 0):
from io import StringIO, TextIOWrapper as SysStderrType
else:
from cStringIO import StringIO
SysStderrType = file
class StderrLocal(threading.local):
def __init__(self):
self.is_real_mode = True
self.buffer = StringIO()
class StderrProxy(object):
def __init__(self, stderr):
self._stderr = stderr
self._tls = StderrLocal()
def _toggle_real_mode(self):
self._tls.is_real_mode = not self._tls.is_real_mode
if not self._tls.is_real_mode:
self._tls.buffer.clear()
def _get_value(self):
assert not self._tls.is_real_mode
return self._tls.buffer.getvalue()
def __getattr__(self, attr):
target = self._stderr
if not self._tls.is_real_mode:
target = self._tls.buffer
return getattr(target, attr)
if isinstance(sys.stderr, SysStderrType):
sys.stderr = StderrProxy(sys.stderr)
)";
enum class EPythonFlavor {
System,
Arcadia,
};
void RegisterYqlPythonUdf(
IRegistrator& registrator,
ui32 flags,
TStringBuf moduleName,
TStringBuf resourceName,
EPythonFlavor pythonFlavor);
TUniquePtr<IUdfModule> GetYqlPythonUdfModule(
TStringBuf resourceName,
EPythonFlavor pythonFlavor,
bool standalone);
} // namespace NUdf
} // namespace NYql
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