49 lines
1.9 KiB
C++
49 lines
1.9 KiB
C++
#pragma once
|
|
|
|
#include <c10/macros/Export.h>
|
|
#include <c10/util/Exception.h>
|
|
|
|
/// This file provides some simple utilities for detecting common deadlocks in
|
|
/// PyTorch. For now, we focus exclusively on detecting Python GIL deadlocks,
|
|
/// as the GIL is a wide ranging lock that is taken out in many situations.
|
|
/// The basic strategy is before performing an operation that may block, you
|
|
/// can use TORCH_ASSERT_NO_GIL_WITHOUT_PYTHON_DEP() to assert that the GIL is
|
|
/// not held. This macro is to be used in contexts where no static dependency
|
|
/// on Python is available (we will handle indirecting a virtual call for you).
|
|
///
|
|
/// If the GIL is held by a torchdeploy interpreter, we always report false.
|
|
/// If you are in a context where Python bindings are available, it's better
|
|
/// to directly assert on PyGILState_Check (as it avoids a vcall and also
|
|
/// works correctly with torchdeploy.)
|
|
|
|
#define TORCH_ASSERT_NO_GIL_WITHOUT_PYTHON_DEP() \
|
|
TORCH_INTERNAL_ASSERT( \
|
|
!c10::impl::check_python_gil(), \
|
|
"Holding GIL before a blocking operation! Please release the GIL before blocking, or see https://github.com/pytorch/pytorch/issues/56297 for how to release the GIL for destructors of objects")
|
|
|
|
namespace c10::impl {
|
|
|
|
C10_API bool check_python_gil();
|
|
|
|
struct C10_API PythonGILHooks {
|
|
virtual ~PythonGILHooks() = default;
|
|
// Returns true if we hold the GIL. If not linked against Python we
|
|
// always return false.
|
|
virtual bool check_python_gil() const = 0;
|
|
};
|
|
|
|
C10_API void SetPythonGILHooks(PythonGILHooks* factory);
|
|
|
|
// DO NOT call this registerer from a torch deploy instance! You will clobber
|
|
// other registrations
|
|
struct C10_API PythonGILHooksRegisterer {
|
|
explicit PythonGILHooksRegisterer(PythonGILHooks* factory) {
|
|
SetPythonGILHooks(factory);
|
|
}
|
|
~PythonGILHooksRegisterer() {
|
|
SetPythonGILHooks(nullptr);
|
|
}
|
|
};
|
|
|
|
} // namespace c10::impl
|