Results for: "OptionParser"

Sets the resource limit of the process. cur_limit means current (soft) limit and max_limit means maximum (hard) limit.

If max_limit is not given, cur_limit is used.

resource indicates the kind of resource to limit. It should be a symbol such as :CORE, a string such as "CORE" or a constant such as Process::RLIMIT_CORE. The available resources are OS dependent. Ruby may support following resources.

AS

total available memory (bytes) (SUSv3, NetBSD, FreeBSD, OpenBSD but 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)

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)

cur_limit and max_limit may be :INFINITY, "INFINITY" or Process::RLIM_INFINITY, which means that the resource is not limited. They may be Process::RLIM_SAVED_MAX, Process::RLIM_SAVED_CUR and corresponding symbols and strings too. See system setrlimit(2) manual for details.

The following 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])

Detach the process from controlling terminal and run in the background as system daemon. Unless the argument nochdir is true (i.e. non false), it changes the current working directory to the root (“/”). Unless the argument noclose is true, daemon() will redirect standard input, standard output and standard error to /dev/null. Return zero on success, or raise one of Errno::*.

Returns a Tms structure (see Process::Tms) that contains user and system CPU times for this process, and also for children processes.

t = Process.times
[ t.utime, t.stime, t.cutime, t.cstime ]   #=> [0.0, 0.02, 0.00, 0.00]

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.

@param [Array<Object>] binding_requirements array of requirements that combine to create a conflict @return [Array<UnwindDetails>] array of UnwindDetails that have a chance

of resolving the passed requirements

Example:

x + 1
    ^

Return the best specification that contains the file matching path amongst the specs that are not activated.

Creates a self-signed certificate with an issuer and subject of subject and the given extensions for the key.

@return [Symbol] The name of the action.

(see Action.action_name)

(see Action.action_name)

(see Action#name)

@!visibility private Enumerates each action in the log in reverse order @yield [Action]

Adds the given action to the log, running the action @param [DependencyGraph] graph @param [Action] action @return The value returned by ‘action.up`