Process module:System -package:unix -package:process-extras -package:io-streams -package:typed-process -is:module -package:Win32 -package:crypton -package:process
Process a list of flags (usually obtained from
getArgs/expandArgsAt) with a mode. Returns
Left and an error message if the command line fails to parse,
or Right and the associated value.
CPU options impacting cryptography implementation and library
performance.
The identifier of the CPU-time clock associated with the calling
process. For this clock, the value returned by
getTime
represents the amount of execution time of the current process.
An exception that is raised when a process fails.
The exit code of the process.
Process the flags obtained by
getArgs and
expandArgsAt with a mode. Displays an error and exits
with failure if the command line fails to parse, or returns the
associated value. Implemented in terms of
process. This
function makes use of the following environment variables:
- $CMDARGS_COMPLETE - causes the program to produce
completions using complete, then exit. Completions are based on
the result of getArgs, the index of the current argument is
taken from $CMDARGS_COMPLETE (set it to - to
complete the last argument), and the index within that argument is
taken from $CMDARGS_COMPLETE_POS (if set).
- $CMDARGS_HELPER/$CMDARGS_HELPER_PROG -
uses the helper mechanism for entering command line programs as
described in System.Console.CmdArgs.Helper.
Process a list of flags (usually obtained from
getArgs
and
expandArgsAt) with a mode. Throws an error if the
command line fails to parse, or returns the associated value.
Implemeneted in terms of
process. This function does not take
account of any environment variables that may be set (see
processArgs).
If you are in
IO you will probably get a better user experience
by calling
processValueIO.
Like
processValue but on failure prints to stderr and exits the
program.
Options which have been enabled at compile time and are supported by
the current CPU.
Deprecated: Please use pipeBytes instead.
Deprecated: Please use pipeChunks instead.
processing function called asynchronously after a file is added to the
rotation
Preprocessor encapsulates the abstract interface for invoking C
preprocessors
guess whether a file is preprocessed (file end with .i)
run the preprocessor and return an
InputStream if
preprocesssing succeeded
This alias is provided to avoid breaking backwards compatibility.
Wrapper around
createProcess that prevents multiple processes
that are running concurrently from writing to stdout/stderr at the
same time.
If the process does not output to stdout or stderr, it's run by
createProcess entirely as usual. Only processes that can generate
output are handled specially:
A process is allowed to write to stdout and stderr in the usual way,
assuming it can successfully take the output lock.
When the output lock is held (ie, by another concurrent process, or
because
outputConcurrent is being called at the same time), the
process is instead run with its stdout and stderr redirected to a
buffer. The buffered output will be displayed as soon as the output
lock becomes free.
Note that the the process is waited for by a background thread, so
unlike createProcess, neglecting to call waitForProcess will not
result in zombie processess.
Wrapper around
createProcess that makes sure a process is run
in the foreground, with direct access to stdout and stderr. Useful
when eg, running an interactive process.
Note that the the process is waited for by a background thread, so
unlike createProcess, neglecting to call waitForProcess will not
result in zombie processess.
Same as
waitForProcess; provided to avoid breaking backwards
compatibility.