Module: OsCtld::PrLimits

Defined in:
ext/osctld/native.c,
lib/osctld.rb,
lib/osctld/prlimits.rb

Defined Under Namespace

Classes: Manager, PrLimit

Constant Summary collapse

AS = 
INT2NUM(RLIMIT_AS)
CORE = 
INT2NUM(RLIMIT_CORE)
CPU = 
INT2NUM(RLIMIT_CPU)
DATA = 
INT2NUM(RLIMIT_DATA)
FSIZE = 
INT2NUM(RLIMIT_FSIZE)
LOCKS = 
INT2NUM(RLIMIT_LOCKS)
MEMLOCK = 
INT2NUM(RLIMIT_MEMLOCK)
MSGQUEUE = 
INT2NUM(RLIMIT_MSGQUEUE)
NICE = 
INT2NUM(RLIMIT_NICE)
NOFILE = 
INT2NUM(RLIMIT_NOFILE)
NPROC = 
INT2NUM(RLIMIT_NPROC)
RSS = 
INT2NUM(RLIMIT_RSS)
RTPRIO = 
INT2NUM(RLIMIT_RTPRIO)
RTTIME = 
INT2NUM(RLIMIT_RTTIME)
SIGPENDING = 
INT2NUM(RLIMIT_SIGPENDING)
STACK = 
INT2NUM(RLIMIT_STACK)
INFINITY = 
ULONG2NUM(RLIM_INFINITY)

Class Method Summary collapse

Class Method Details

.resource_to_const(resource) ⇒ Integer

Parameters:

  • resource (String)

Returns:

  • (Integer) 


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# File 'lib/osctld/prlimits.rb', line 5

def self.resource_to_const(resource)
  PrLimits.const_get(resource.upcase)
end

.set(pid, resource, soft, hard) ⇒ Boolean

Set process resource limit

Parameters:

  • pid (Integer) —

    process ID

  • resource (Integer) —

    resource type

  • soft (Integer) —

    current limit

  • hard (Integer) —

    maximum limit

Returns:

  • (Boolean)

Raises:

  • (SystemCallError) 


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# File 'ext/osctld/native.c', line 21

VALUE osctld_prlimits_set(VALUE self, VALUE vPid, VALUE vResource, VALUE vSoft, VALUE vHard)
{
	pid_t pid = (pid_t) NUM2LONG(vPid);
	int resource = NUM2INT(vResource);
	struct rlimit limit = {
		.rlim_cur = (rlim_t) NUM2ULONG(vSoft),
		.rlim_max = (rlim_t) NUM2ULONG(vHard)
	};
	int ret;
	char error[255];

	if ((ret = prlimit(pid, resource, &limit, NULL)) == 0)
		return Qtrue;

	rb_raise(
		rb_eSystemCallError,
		"prlimit() failed: %d - %s",
		ret, strerror_r(errno, error, sizeof(error))
	);
}