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from resource import _struct_rusage, struct_rusage
from ctypes import CDLL, c_int, POINTER, byref
from ctypes.util import find_library
__all__ = ["wait3", "wait4"]
libc = CDLL(find_library("c"))
c_wait3 = libc.wait3
c_wait3.argtypes = [POINTER(c_int), c_int, POINTER(_struct_rusage)]
c_wait3.restype = c_int
c_wait4 = libc.wait4
c_wait4.argtypes = [c_int, POINTER(c_int), c_int, POINTER(_struct_rusage)]
c_wait4.restype = c_int
def create_struct_rusage(c_struct):
return struct_rusage((
float(c_struct.ru_utime),
float(c_struct.ru_stime),
c_struct.ru_maxrss,
c_struct.ru_ixrss,
c_struct.ru_idrss,
c_struct.ru_isrss,
c_struct.ru_minflt,
c_struct.ru_majflt,
c_struct.ru_nswap,
c_struct.ru_inblock,
c_struct.ru_oublock,
c_struct.ru_msgsnd,
c_struct.ru_msgrcv,
c_struct.ru_nsignals,
c_struct.ru_nvcsw,
c_struct.ru_nivcsw))
def wait3(options):
status = c_int()
_rusage = _struct_rusage()
pid = c_wait3(byref(status), c_int(options), byref(_rusage))
rusage = create_struct_rusage(_rusage)
return pid, status.value, rusage
def wait4(pid, options):
status = c_int()
_rusage = _struct_rusage()
pid = c_wait4(c_int(pid), byref(status), c_int(options), byref(_rusage))
rusage = create_struct_rusage(_rusage)
return pid, status.value, rusage
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