diff options
Diffstat (limited to 'ext/pty/README')
| -rw-r--r-- | ext/pty/README | 40 |
1 files changed, 6 insertions, 34 deletions
diff --git a/ext/pty/README b/ext/pty/README index a09469d39c..42c7d4f891 100644 --- a/ext/pty/README +++ b/ext/pty/README @@ -33,43 +33,15 @@ following module fungtions: the array is passed to the block as block parameters, and the function itself returns nil. - While the process spawned by this function is active, SIGCHLD - is captured to handle the change of the child process. When the - child process is suspended or finished, an exception is raised. - As all SIGCHLD signal is captured and processed by PTY module, - you can't use other function or method which spawns subprosesses - (including signal() and IO.popen()) while the PTY subprocesses - are active. Otherwise, unexpected exception will occur. To avoid - this problem, see protect_signal() below. - - If this function is called with an iterator block, SIGCHLD signal - is captured only within the block. Therefore, it is risky to use - File objects for PTY subprocess outside the iterator block. - + When the child process is suspended or finished, an exception is + raised. If this function is called with an iterator block, + exception is raised only within the block. Child process + monitor is terminated on block exit. protect_signal + reset_signal - This function takes an iterator block. Within the iterator block, - no exception is raised even if any subprocess is terminated. - This function is used to enable functions like system() or IO.popen() - while PTY subprocess is active. For example, - - PTY.spawn("command_foo") do |r,w| - ... - ... - PTY.protect_signal do - system "some other commands" - end - ... - end - - disables to send exception when "some other commands" is - terminated. - - reset_signal - - Disables to handle SIGCHLD while PTY subprocess is active. - + These functions are obsolete in this version of pty. 4. License |