mirror of
https://github.com/xonsh/xonsh.git
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57 lines
2.5 KiB
ReStructuredText
57 lines
2.5 KiB
ReStructuredText
**Added:**
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* New subprocess specification class ``SubprocSpec`` is used for specifiying
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and manipulating subprocess classes prior to execution.
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* New ``PopenThread`` class runs subprocesses on a a separate thread.
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* New ``CommandPipeline`` and ``HiddenCommandPipeline`` classes manage the
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execution of a pipeline of commands via the execution of the last command
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in the pipeline. Instances may be iterated and stream lines from the
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stdout buffer. These pipelines read from the stdout & stderr streams in a
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non-blocking manner.
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* ``$XONSH_STORE_STDOUT`` is now available on all platforms!
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* The ``CommandsCache`` now has the ability to predict whether or not a
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command must be run in the foreground using ``Popen`` or may use a
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background thread and can use ``PopenThread``.
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* Callable aliases may now use the full gamut of functions signatures:
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``f()``, ``f(args)``, ``f(args, stdin=None)``,
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``f(args, stdin=None, stdout=None)``, and `
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``f(args, stdin=None, stdout=None, stderr=None)``.
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* Uncaptured subprocesses now recieve a PTY file handle for stdout and
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stderr.
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* New ``$XONSH_PROC_FREQUENCY`` environment variable that specifies how long
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loops in the subprocess framwork should sleep. This may be adjusted from
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its default value to improved perfromance and mitigate "leaky" pipes on
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slower machines.
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**Changed:**
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* The ``run_subproc()`` function has been replaced with a new implementation.
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* Piping between processes now uses OS pipes.
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* ``$XONSH_STORE_STDIN`` now uses ``os.pread()`` rather than ``tee`` and a new
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file.
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* The implementation of the ``foreground()`` decorator has been moved to
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``unthreadable()``.
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**Deprecated:** None
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**Removed:**
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* ``CompletedCommand`` and ``HiddenCompletedCommand`` classes have been removed
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in favor of ``CommandPipeline`` and ``HiddenCommandPipeline``.
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* ``SimpleProcProxy`` and ``SimpleForegroundProcProxy`` have been removed
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in favor of a more general mechanism for dispatching callable aliases
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implemented in the ``ProcProxyThread`` and ``ProcProxy`` classes.
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**Fixed:**
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* May now Crtl-C out of an infinite loop with a subprocess, such as
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```while True: sleep 1``.
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* Fix for stdin redirects.
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* Backgrounding works with ``$XONSH_STORE_STDOUT``
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* Added a minimum time buffer time for command pipelines to check for
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if previous commands have executed successfully. This is helpful
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for pipelines where the last command takes a long time to start up,
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such as GNU Parallel. This also checks to make sure that output has occured.
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This includes piping 2+ commands together.
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**Security:** None
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