From 6232d13f5321b87ddf12a1aa36b4545da45f173d Mon Sep 17 00:00:00 2001 From: Joel Klinghed Date: Wed, 17 Nov 2021 22:34:57 +0100 Subject: Travel3: Simple image and video display site Reads the images and videos from filesystem and builds a site in memroy. --- src/unique_pipe.cc | 47 +++++++++++++++++++++++++++++++++++++++++++++++ 1 file changed, 47 insertions(+) create mode 100644 src/unique_pipe.cc (limited to 'src/unique_pipe.cc') diff --git a/src/unique_pipe.cc b/src/unique_pipe.cc new file mode 100644 index 0000000..3ab1871 --- /dev/null +++ b/src/unique_pipe.cc @@ -0,0 +1,47 @@ +#include "common.hh" + +#include "io.hh" +#include "unique_pipe.hh" + +#include +#include + +unique_pipe::unique_pipe(bool non_blocking_reader, bool non_blocking_writer) { + int fd[2]; +#if HAVE_PIPE2 + if (non_blocking_reader == non_blocking_writer) { + if (pipe2(fd, non_blocking_reader ? O_NONBLOCK : 0) == 0) { + fd_[0] = unique_fd(fd[0]); + fd_[1] = unique_fd(fd[1]); + } + return; + } +#endif + if (pipe(fd)) + return; + if (non_blocking_reader) + io::make_nonblocking(fd[0]); + if (non_blocking_writer) + io::make_nonblocking(fd[1]); + fd_[0] = unique_fd(fd[0]); + fd_[1] = unique_fd(fd[1]); +} + +unique_pipe::unique_pipe(unique_pipe&& fd) noexcept { + fd_[0] = unique_fd(fd.fd_[0].release()); + fd_[1] = unique_fd(fd.fd_[1].release()); +} + +void unique_pipe::reset() { + fd_[0].reset(); + fd_[1].reset(); +} + +unique_fd unique_pipe::release_reader() { + return std::move(fd_[0]); +} + +unique_fd unique_pipe::release_writer() { + return std::move(fd_[1]); +} + -- cgit v1.2.3-70-g09d2