Results for: "OptionParser"

Sets limits for the current process for the given resource to cur_limit (soft limit) and max_limit (hard limit); returns nil.

Argument resource specifies the resource whose limits are to be set; the argument may be given as a symbol, as a string, or as a constant beginning with Process::RLIMIT_ (e.g., :CORE, 'CORE', or Process::RLIMIT_CORE.

The resources available and supported are system-dependent, and may include (here expressed as symbols):

• :AS: Total available memory (bytes) (SUSv3, NetBSD, FreeBSD, OpenBSD except 4.4BSD-Lite).

• :CORE: Core size (bytes) (SUSv3).

• :CPU: CPU time (seconds) (SUSv3).

• :DATA: Data segment (bytes) (SUSv3).

• :FSIZE: File size (bytes) (SUSv3).

• :MEMLOCK: Total size for mlock(2) (bytes) (4.4BSD, GNU/Linux).

• :MSGQUEUE: Allocation for POSIX message queues (bytes) (GNU/Linux).

• :NICE: Ceiling on process’s nice(2) value (number) (GNU/Linux).

• :NOFILE: File descriptors (number) (SUSv3).

• :NPROC: Number of processes for the user (number) (4.4BSD, GNU/Linux).

• :NPTS: Number of pseudo terminals (number) (FreeBSD).

• :RSS: Resident memory size (bytes) (4.2BSD, GNU/Linux).

• :RTPRIO: Ceiling on the process’s real-time priority (number) (GNU/Linux).

• :RTTIME: CPU time for real-time process (us) (GNU/Linux).

• :SBSIZE: All socket buffers (bytes) (NetBSD, FreeBSD).

• :SIGPENDING: Number of queued signals allowed (signals) (GNU/Linux).

• :STACK: Stack size (bytes) (SUSv3).

Arguments cur_limit and max_limit may be:

• Integers (max_limit should not be smaller than cur_limit).

• Symbol :SAVED_MAX, string 'SAVED_MAX', or constant Process::RLIM_SAVED_MAX: saved maximum limit.

• Symbol :SAVED_CUR, string 'SAVED_CUR', or constant Process::RLIM_SAVED_CUR: saved current limit.

• Symbol :INFINITY, string 'INFINITY', or constant Process::RLIM_INFINITY: no limit on resource.

This example raises the soft limit of core size to the hard limit to try to make core dump possible:

Process.setrlimit(:CORE, Process.getrlimit(:CORE)[1])

Not available on all platforms.

Detaches the current process from its controlling terminal and runs it in the background as system daemon; returns zero.

By default:

• Changes the current working directory to the root directory.

• Redirects $stdin, $stdout, and $stderr to the null device.

If optional argument nochdir is true, does not change the current working directory.

If optional argument noclose is true, does not redirect $stdin, $stdout, or $stderr.

Returns a Process::Tms structure that contains user and system CPU times for the current process, and for its children processes:

Process.times
# => #<struct Process::Tms utime=55.122118, stime=35.533068, cutime=0.0, cstime=0.002846>

The precision is platform-defined.

Returns the name of the script being executed. The value is not affected by assigning a new value to $0.

This method first appeared in Ruby 2.1 to serve as a global variable free means to get the script name.

() ^^

(1) ^^^

1r ^^

Visit the interpolated content of the string-like node.

def foo((bar, baz)); end

^^^^^^^^^^

() ^^

(1) ^^^

1r ^^

Pattern constants get wrapped in another layer of :const.

/foo #{bar}/ ^^^^^^^^^^^^

/foo #{bar}/ ^^^^^^^^^^^^

Foo += bar ^^^^^^^^^^^

Foo::Bar, = baz ^^^^^^^^

def foo(**bar); end

^^^^^

def foo(**); end

^^

Visit the targets of a multi-target node.

def foo(**nil); end

^^^^^

def foo(bar:); end

^^^^