7a42f3c3d8
Use a span instead of a const reference to a vector, this does not change the behaviour and allows e.g. arrays to be used to hold arguments/file descriptors. Signed-off-by: Barnabás Pőcze <barnabas.pocze@ideasonboard.com> Reviewed-by: Kieran Bingham <kieran.bingham@ideasonboard.com> Reviewed-by: Laurent Pinchart <laurent.pinchart@ideasonboard.com>
87 lines
1.4 KiB
C++
87 lines
1.4 KiB
C++
/* SPDX-License-Identifier: LGPL-2.1-or-later */
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/*
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* Copyright (C) 2019, Google Inc.
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*
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* Process object
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*/
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#pragma once
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#include <signal.h>
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#include <string>
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#include <libcamera/base/class.h>
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#include <libcamera/base/signal.h>
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#include <libcamera/base/span.h>
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#include <libcamera/base/unique_fd.h>
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namespace libcamera {
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class EventNotifier;
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class Process final
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{
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public:
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enum ExitStatus {
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NotExited,
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NormalExit,
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SignalExit,
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};
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Process();
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~Process();
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int start(const std::string &path,
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Span<const std::string> args = {},
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Span<const int> fds = {});
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ExitStatus exitStatus() const { return exitStatus_; }
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int exitCode() const { return exitCode_; }
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void kill();
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Signal<enum ExitStatus, int> finished;
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private:
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LIBCAMERA_DISABLE_COPY_AND_MOVE(Process)
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void closeAllFdsExcept(const std::vector<int> &fds);
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int isolate();
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void died(int wstatus);
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pid_t pid_;
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enum ExitStatus exitStatus_;
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int exitCode_;
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friend class ProcessManager;
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};
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class ProcessManager
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{
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public:
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ProcessManager();
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~ProcessManager();
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void registerProcess(Process *proc);
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static ProcessManager *instance();
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int writePipe() const;
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const struct sigaction &oldsa() const;
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private:
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static ProcessManager *self_;
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void sighandler();
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std::list<Process *> processes_;
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struct sigaction oldsa_;
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EventNotifier *sigEvent_;
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UniqueFD pipe_[2];
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};
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} /* namespace libcamera */
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