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* ext/pty/pty.c: Improve documentaton. Patch by David Copeland.
[Ruby 1.9 - Bug #4756] git-svn-id: svn+ssh://ci.ruby-lang.org/ruby/trunk@31688 b2dd03c8-39d4-4d8f-98ff-823fe69b080e
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2 changed files with 77 additions and 29 deletions
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@ -1,3 +1,8 @@
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Sun May 22 11:44:53 2011 Eric Hodel <drbrain@segment7.net>
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* ext/pty/pty.c: Improve documentaton. Patch by David Copeland.
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[Ruby 1.9 - Bug #4756]
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Sun May 22 11:26:39 2011 Eric Hodel <drbrain@segment7.net>
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* lib/timeout.rb: Improve documentation. Patch by David Copeland.
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101
ext/pty/pty.c
101
ext/pty/pty.c
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@ -122,6 +122,9 @@ char MasterDevice[] = "/dev/pty%s",
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static VALUE eChildExited;
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/* Returns the exit status of the child for which PTY#check
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* raised this exception
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*/
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static VALUE
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echild_status(VALUE self)
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{
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@ -428,20 +431,28 @@ pty_close_pty(VALUE assoc)
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/*
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* call-seq:
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* PTY.open => [master_io, slave_file]
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* PTY.open {|master_io, slave_file| ... } => block value
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* PTY.open => [master_io, slave_file]
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* PTY.open {|master_io, slave_file| ... } => block value
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*
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* Allocates a pty (pseudo-terminal).
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*
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* It returns an array which contains an IO object and a File object.
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* The former is the master of the pty.
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* The latter is the slave of the pty.
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* In the non-block form, returns a two element array, <tt>[master_io,
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* slave_file]</tt>.
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*
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* If a block is given, it yields the array instead of return.
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* The value of the block is returned.
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* master_io and slave_file is closed when return if they are not closed.
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* In the block form, yields two arguments <tt>master_io, slave_file</tt>
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* and the value of the block is returned from +open+.
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*
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* The path name of the terminal device can be gotten by slave_file.path.
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* The IO and File are both closed after the block completes if they haven't
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* been already closed.
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*
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* The arguments in both forms are:
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*
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* <tt>master_io</tt>:: the master of the pty, as an IO.
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* <tt>slave_file</tt>:: the slave of the pty, as a File. The path to the
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* terminal device is available via
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* <tt>slave_file.path</tt>
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*
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* === Example
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*
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* PTY.open {|m, s|
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* p m #=> #<IO:masterpty:/dev/pts/1>
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@ -465,7 +476,8 @@ pty_close_pty(VALUE assoc)
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* w.puts "144"
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* p m.gets #=> "144: 2 2 2 2 3 3\n"
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* w.close
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* # The result of read operation when pty slave is closed is platform dependnet.
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* # The result of read operation when pty slave is closed is platform
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* # dependent.
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* ret = begin
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* m.gets # FreeBSD returns nil.
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* rescue Errno::EIO # GNU/Linux raises EIO.
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@ -513,24 +525,34 @@ pty_detach_process(struct pty_info *info)
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/*
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* call-seq:
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* PTY.spawn(command...) {|r, w, pid| ... } => nil
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* PTY.spawn(command...) => r, w, pid
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* PTY.getpty(command...) {|r, w, pid| ... } => nil
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* PTY.getpty(command...) => r, w, pid
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* PTY.spawn(command_line) { |r, w, pid| ... }
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* PTY.spawn(command_line) => [r, w, pid]
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* PTY.spawn(command, args, ...) { |r, w, pid| ... }
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* PTY.spawn(command, args, ...) => [r, w, pid]
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* PTY.getpty(command_line) { |r, w, pid| ... }
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* PTY.getpty(command_line) => [r, w, pid]
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* PTY.getpty(command, args, ...) { |r, w, pid| ... }
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* PTY.getpty(command, args, ...) => [r, w, pid]
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*
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* spawns the specified command on a newly allocated pty.
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* Spawns the specified command on a newly allocated pty.
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*
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* The command's controlling tty is set to the slave device of the pty.
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* Also its standard input/output/error is redirected to the slave device.
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* The command's controlling tty is set to the slave device of the pty
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* and its standard input/output/error is redirected to the slave device.
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*
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* PTY.spawn returns two IO objects and PID.
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* PID is the process ID of the command.
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* The two IO objects are connected to the master device of the pty.
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* The first IO object is opened as read mode and
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* The second is opened as write mode.
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* <tt>command_line</tt>:: The full command line to run
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* <tt>command</tt>:: The command to run, as a String.
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* <tt>args</tt>:: Zero or more arguments, as Strings, representing
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* the arguments to +command+
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*
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* If a block is given, two IO objects and PID is yielded.
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* In the non-block form this returns an array of size three,
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* <tt>[r, w, pid]</tt>. In the block form the block will be called with
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* these as arguments, <tt>|r,w,pid|</tt>:
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*
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* +r+:: An IO that can be read from that contains the command's
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* standard output and standard error
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* +w+:: An IO that can be written to that is the command's
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* standard input
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* +pid+:: The process identifier for the command.
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*/
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static VALUE
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pty_getpty(int argc, VALUE *argv, VALUE self)
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@ -599,12 +621,19 @@ raise_from_check(pid_t pid, int status)
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/*
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* call-seq:
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* PTY.check(pid[, raise=false]) => Process::Status or nil
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* PTY.check(pid, raise = false) => Process::Status or nil
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* PTY.check(pid, true) => nil or raises PTY::ChildExited
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*
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* checks the status of the child process specified by _pid_, and
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* returns +nil+ if the process is still alive and active. Otherwise,
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* returns +Process::Status+ about the process if _raise_ is false, or
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* +PTY::ChildExited+ exception is raised.
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* Checks the status of the child process specified by +pid+.
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* Returns +nil+ if the process is still alive. If the process
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* is not alive, will return a <tt>Process::Status</tt> or raise
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* a <tt>PTY::ChildExited</tt> (if +raise+ was true).
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*
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* +pid+:: The process id of the process to check
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* +raise+:: If true and the process identified by +pid+ is no longer
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* alive a <tt>PTY::ChildExited</tt> is raised.
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*
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* Returns nil or a <tt>Process::Status</tt> when +raise+ is false.
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*/
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static VALUE
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pty_check(int argc, VALUE *argv, VALUE self)
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@ -619,11 +648,25 @@ pty_check(int argc, VALUE *argv, VALUE self)
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if (!RTEST(exc)) return rb_last_status_get();
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raise_from_check(cpid, status);
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return Qnil; /* not reached */
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return Qnil;
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}
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static VALUE cPTY;
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/*
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* Document-class: PTY::ChildExited
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*
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* Thrown when PTY#check is called for a pid that represents a process that
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* has exited.
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*/
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/*
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* Document-class: PTY
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*
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* Creates and managed pseudo terminals (PTYs). See also
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* http://en.wikipedia.org/wiki/Pseudo_terminal
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*/
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void
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Init_pty()
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{
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