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Reformat the world
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714 changed files with 35149 additions and 35203 deletions
53
src/Pipe.h
53
src/Pipe.h
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#pragma once
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namespace zeek::detail {
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namespace zeek::detail
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{
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class Pipe {
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class Pipe
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{
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public:
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/**
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* Create a pair of file descriptors via pipe(), or aborts if it cannot.
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* @param flags0 file descriptor flags to set on read end of pipe.
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* than create ones from a new pipe. Should point to memory containing
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* two consecutive file descriptors, the "read" one and then the "write" one.
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*/
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explicit Pipe(int flags0 = 0, int flags1 = 0, int status_flags0 = 0,
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int status_flags1 = 0, int* fds = nullptr);
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explicit Pipe(int flags0 = 0, int flags1 = 0, int status_flags0 = 0, int status_flags1 = 0,
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int* fds = nullptr);
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/**
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* Close the pair of file descriptors owned by the object.
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*/
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* Close the pair of file descriptors owned by the object.
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*/
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~Pipe();
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/**
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/**
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* @return the file descriptor associated with the read-end of the pipe.
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*/
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int ReadFD() const
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{ return fds[0]; }
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int ReadFD() const { return fds[0]; }
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/**
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* @return the file descriptor associated with the write-end of the pipe.
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*/
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int WriteFD() const
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{ return fds[1]; }
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int WriteFD() const { return fds[1]; }
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/**
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* Sets the given file descriptor flags for both the read and write end
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int fds[2];
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int flags[2];
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int status_flags[2];
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};
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};
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/**
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* A pair of pipes that can be used for bi-directinoal IPC.
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*/
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class PipePair {
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class PipePair
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{
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public:
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/**
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* Create a pair of pipes
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* @param flags file descriptor flags to set on pipes
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/**
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* @return the pipe used for receiving input
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*/
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Pipe& In()
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{ return pipes[swapped]; }
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Pipe& In() { return pipes[swapped]; }
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/**
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* @return the pipe used for sending output
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*/
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Pipe& Out()
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{ return pipes[!swapped]; }
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Pipe& Out() { return pipes[! swapped]; }
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/**
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* @return the pipe used for receiving input
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*/
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const Pipe& In() const
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{ return pipes[swapped]; }
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const Pipe& In() const { return pipes[swapped]; }
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/**
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* @return the pipe used for sending output
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*/
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const Pipe& Out() const
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{ return pipes[!swapped]; }
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const Pipe& Out() const { return pipes[! swapped]; }
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/**
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* @return a file descriptor that may used for receiving messages by
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* polling/reading it.
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*/
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int InFD() const
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{ return In().ReadFD(); }
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int InFD() const { return In().ReadFD(); }
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/**
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* @return a file descriptor that may be used for sending messages by
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* writing to it.
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*/
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int OutFD() const
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{ return Out().WriteFD(); }
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int OutFD() const { return Out().WriteFD(); }
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/**
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* Swaps the meaning of the pipes in the pair. E.g. call this after
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* fork()'ing so that the child process uses the right pipe for
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* reading/writing.
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*/
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void Swap()
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{ swapped = ! swapped; }
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void Swap() { swapped = ! swapped; }
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private:
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Pipe pipes[2];
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bool swapped = false;
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};
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};
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} // namespace zeek::detail
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} // namespace zeek::detail
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