libcamera  v0.2.0+85-1c5830a9
Supporting cameras in Linux since 2019
fence.h
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1 /* SPDX-License-Identifier: LGPL-2.1-or-later */
2 /*
3  * Copyright (C) 2021, Google Inc.
4  *
5  * internal/fence.h - Synchronization fence
6  */
7 
8 #pragma once
9 
10 #include <libcamera/base/class.h>
12 
13 namespace libcamera {
14 
15 class Fence
16 {
17 public:
18  Fence(UniqueFD fd);
19 
20  bool isValid() const { return fd_.isValid(); }
21  const UniqueFD &fd() const { return fd_; }
22 
23  UniqueFD release() { return std::move(fd_); }
24 
25 private:
27 
28  UniqueFD fd_;
29 };
30 
31 } /* namespace libcamera */
UniqueFD release()
Release the ownership of the file descriptor.
Definition: fence.h:23
Utilities to help constructing class interfaces.
Synchronization primitive to manage resources.
Definition: fence.h:15
File descriptor wrapper that owns a file descriptor.
Top-level libcamera namespace.
Definition: backtrace.h:17
Fence(UniqueFD fd)
Create a Fence.
Definition: fence.cpp:82
#define LIBCAMERA_DISABLE_COPY_AND_MOVE(klass)
Disable copy and move construction and assignment of the klass.
unique_ptr-like wrapper for a file descriptor
Definition: unique_fd.h:17
const UniqueFD & fd() const
Retrieve a constant reference to the file descriptor.
Definition: fence.h:21
bool isValid() const
Check if the UniqueFD owns a valid file descriptor.
Definition: unique_fd.h:61
bool isValid() const
Check if a Fence is valid.
Definition: fence.h:20