FM / core

/usr/local/lib64/python3.6/site-packages/torch/include/c10/core/

/usr/local/lib64/python3.6/site-packages/torch/include/c10/core

Name	Size	Mode	Actions
impl/	-	0755	rm
Allocator.h	8725	0644	edit dl rm
AutogradState.h	994	0644	edit dl rm
Backend.h	8487	0644	edit dl rm
CompileTimeFunctionPointer.h	1677	0644	edit dl rm
CopyBytes.h	1229	0644	edit dl rm
CPUAllocator.h	2267	0644	edit dl rm
DefaultDtype.h	394	0644	edit dl rm
DefaultTensorOptions.h	1032	0644	edit dl rm
Device.h	5396	0644	edit dl rm
DeviceGuard.h	7555	0644	edit dl rm
DeviceType.h	2994	0644	edit dl rm
DispatchKey.h	18069	0644	edit dl rm
DispatchKeySet.h	12951	0644	edit dl rm
Event.h	4169	0644	edit dl rm
GeneratorImpl.h	3713	0644	edit dl rm
GradMode.h	1261	0644	edit dl rm
InferenceMode.h	3471	0644	edit dl rm
Layout.h	1225	0644	edit dl rm
MemoryFormat.h	8571	0644	edit dl rm
OptionalRef.h	521	0644	edit dl rm
QEngine.h	861	0644	edit dl rm
QScheme.h	1562	0644	edit dl rm
Scalar.h	6019	0644	edit dl rm
ScalarType.h	17073	0644	edit dl rm
ScalarTypeToTypeMeta.h	1365	0644	edit dl rm
Storage.h	4369	0644	edit dl rm
StorageImpl.h	5610	0644	edit dl rm
Stream.h	7373	0644	edit dl rm
StreamGuard.h	6315	0644	edit dl rm
TensorImpl.h	96152	0644	edit dl rm
TensorOptions.h	27593	0644	edit dl rm
thread_pool.h	2992	0644	edit dl rm
UndefinedTensorImpl.h	911	0644	edit dl rm
WrapDimMinimal.h	805	0644	edit dl rm

Edit: /usr/local/lib64/python3.6/site-packages/torch/include/c10/core/StreamGuard.h (6315B)

#pragma once

#include <c10/core/impl/InlineStreamGuard.h>

namespace c10 {

/**
 * A StreamGuard is an RAII class that changes the current device
 * to the device corresponding to some stream, and changes the
 * default stream on that device to be this stream.
 *
 * Use of StreamGuard is HIGHLY discouraged in operator definitions.  In
 * a single operator, you probably don't know enough about the global
 * state of the world to profitably decide how to set streams.  Let
 * the caller handle this appropriately, and just use the current stream
 * in your operator code.
 *
 * This StreamGuard does NOT have an uninitialized state; it is guaranteed
 * to reset the stream and device on exit.  If you are in a situation
 * where you *might* want to setup a stream guard, see OptionalStreamGuard.
 */
struct StreamGuard {
  /// No default constructor, see Note [Omitted default constructor from RAII]
  explicit StreamGuard() = delete;

/// Set the current device to the device associated with the passed stream,
  /// and set the current  stream on that device to the passed stream.
  explicit StreamGuard(Stream stream) : guard_(stream) {}

/// Copy is disallowed
  StreamGuard(const StreamGuard&) = delete;
  StreamGuard& operator=(const StreamGuard&) = delete;

/// Move is disallowed, as StreamGuard does not have an uninitialized state,
  /// which is required for moves on types with nontrivial destructors.
  StreamGuard(StreamGuard&& other) = delete;
  StreamGuard& operator=(StreamGuard&& other) = delete;

/// Resets the currently set stream to the original stream and
  /// the currently set device to the original device.  Then,
  /// set the current device to the device associated with the passed stream,
  /// and set the current stream on that device to the passed stream.
  ///
  /// NOTE: this implementation may skip some stream/device setting if
  /// it can prove that it is unnecessary.
  ///
  /// WARNING: reset_stream does NOT preserve previously set streams on
  /// different devices.  If you need to set streams on multiple devices
  /// on , use MultiStreamGuard instead.
  void reset_stream(Stream stream) {
    guard_.reset_stream(stream);
  }

/// Returns the stream that was set at the time the guard was constructed.
  Stream original_stream() const {
    return guard_.original_stream();
  }

/// Returns the most recent stream that was set using this device guard,
  /// either from construction, or via set_stream.
  Stream current_stream() const {
    return guard_.current_stream();
  }

/// Returns the most recent device that was set using this device guard,
  /// either from construction, or via set_device/reset_device/set_index.
  Device current_device() const {
    return guard_.current_device();
  }

/// Returns the device that was set at the most recent reset_stream(),
  /// or otherwise the device at construction time.
  Device original_device() const {
    return guard_.original_device();
  }

private:
  c10::impl::InlineStreamGuard<impl::VirtualGuardImpl> guard_;
};

/**
 * An OptionalStreamGuard is an RAII class that sets a device to some value on
 * initialization, and resets the device to its original value on destruction.
 * See OptionalDeviceGuard for more guidance on how to use this class.
 */
struct OptionalStreamGuard {
  /// Create an uninitialized guard.
  explicit OptionalStreamGuard() : guard_() {}

/// Set the current device to the device associated with the passed stream,
  /// and set the current stream on that device to the passed stream.
  explicit OptionalStreamGuard(Stream stream) : guard_(stream) {}

/// Set the current device to the device associated with the passed stream,
  /// and set the current stream on that device to the passed stream,
  /// if the passed stream is not nullopt.
  explicit OptionalStreamGuard(optional<Stream> stream_opt)
      : guard_(stream_opt) {}

/// Copy is disallowed
  OptionalStreamGuard(const OptionalStreamGuard&) = delete;
  OptionalStreamGuard& operator=(const OptionalStreamGuard&) = delete;

// See Note [Move construction for RAII guards is tricky]
  OptionalStreamGuard(OptionalStreamGuard&& other) = delete;

// See Note [Move assignment for RAII guards is tricky]
  OptionalStreamGuard& operator=(OptionalStreamGuard&& other) = delete;

/// Returns the stream that was set at the time the guard was most recently
  /// initialized, or nullopt if the guard is uninitialized.
  optional<Stream> original_stream() const {
    return guard_.original_stream();
  }

/// Returns the most recent  stream that was set using this stream guard,
  /// either from construction, or via reset_stream, if the guard is
  /// initialized, or nullopt if the guard is uninitialized.
  optional<Stream> current_stream() const {
    return guard_.current_stream();
  }

/// Restore the original  device and stream, resetting this guard to
  /// uninitialized state.
  void reset() {
    guard_.reset();
  }

private:
  c10::impl::InlineOptionalStreamGuard<impl::VirtualGuardImpl> guard_;
};

/**
 * A MultiStreamGuard is an RAII class that sets the current streams of a set of
 * devices all at once, and resets them to their original values on destruction.
 */
struct MultiStreamGuard {
  /// Set the current streams to the passed streams on each of their respective
  /// devices.
  explicit MultiStreamGuard(ArrayRef<Stream> streams) : guard_(streams) {}

/// Copy is disallowed
  MultiStreamGuard(const MultiStreamGuard&) = delete;
  MultiStreamGuard& operator=(const MultiStreamGuard&) = delete;

// See Note [Move construction for RAII guards is tricky]
  MultiStreamGuard(MultiStreamGuard&& other) = delete;

// See Note [Move assignment for RAII guards is tricky]
  MultiStreamGuard& operator=(MultiStreamGuard&& other) = delete;

private:
  c10::impl::InlineMultiStreamGuard<impl::VirtualGuardImpl> guard_;
};

} // namespace c10

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