$NetBSD: patch-psutil___psnetbsd.py,v 1.1 2013/10/12 13:32:36 wiz Exp $

Port to NetBSD.

--- psutil/_psnetbsd.py.orig	2013-10-12 13:19:29.000000000 +0000
+++ psutil/_psnetbsd.py
@@ -0,0 +1,367 @@
+#!/usr/bin/env python
+
+# Copyright (c) 2009, Giampaolo Rodola'. All rights reserved.
+# Use of this source code is governed by a BSD-style license that can be
+# found in the LICENSE file.
+
+"""NetBSD platform implementation."""
+
+import errno
+import os
+import sys
+import warnings
+
+import _psutil_netbsd
+import _psutil_posix
+from psutil import _psposix
+from psutil._error import AccessDenied, NoSuchProcess, TimeoutExpired
+from psutil._compat import namedtuple, wraps
+from psutil._common import *
+
+__extra__all__ = []
+
+# --- constants
+
+# Since these constants get determined at import time we do not want to
+# crash immediately; instead we'll set them to None and most likely
+# we'll crash later as they're used for determining process CPU stats
+# and creation_time
+try:
+    NUM_CPUS = _psutil_netbsd.get_num_cpus()
+except Exception:
+    NUM_CPUS = None
+    warnings.warn("couldn't determine platform's NUM_CPUS", RuntimeWarning)
+try:
+    TOTAL_PHYMEM = _psutil_netbsd.get_virtual_mem()[0]
+except Exception:
+    TOTAL_PHYMEM = None
+    warnings.warn("couldn't determine platform's TOTAL_PHYMEM", RuntimeWarning)
+try:
+    BOOT_TIME = _psutil_netbsd.get_system_boot_time()
+except Exception:
+    BOOT_TIME = None
+    warnings.warn("couldn't determine platform's BOOT_TIME", RuntimeWarning)
+
+
+_PAGESIZE = os.sysconf("SC_PAGE_SIZE")
+_cputimes_ntuple = namedtuple('cputimes', 'user nice system idle irq')
+
+# --- public functions
+
+get_system_boot_time = _psutil_netbsd.get_system_boot_time
+
+nt_virtmem_info = namedtuple('vmem', ' '.join([
+    # all platforms
+    'total', 'available', 'percent', 'used', 'free',
+    # *BSD specific
+    'active',
+    'inactive',
+    'shared',
+    'wired']))
+
+def virtual_memory():
+    """System virtual memory as a namedutple."""
+    mem =  _psutil_netbsd.get_virtual_mem()
+    total, free, active, inactive, wired, shared = mem
+    avail = inactive + free
+    used =  active + wired
+    percent = usage_percent((total - avail), total, _round=1)
+    return nt_virtmem_info(total, avail, percent, used, free,
+                           active, inactive, shared, wired)
+
+def swap_memory():
+    """System swap memory as (total, used, free, sin, sout) namedtuple."""
+    total, used, free, sin, sout = \
+        [x * _PAGESIZE for x in _psutil_netbsd.get_swap_mem()]
+    percent = usage_percent(used, total, _round=1)
+    return nt_swapmeminfo(total, used, free, percent, sin, sout)
+
+def get_system_cpu_times():
+    """Return system per-CPU times as a named tuple"""
+    user, nice, system, idle, irq = _psutil_netbsd.get_system_cpu_times()
+    return _cputimes_ntuple(user, nice, system, idle, irq)
+
+def get_system_per_cpu_times():
+    """Return system CPU times as a named tuple"""
+    ret = []
+    for cpu_t in _psutil_netbsd.get_system_per_cpu_times():
+        user, nice, system, idle, irq = cpu_t
+        item = _cputimes_ntuple(user, nice, system, idle, irq)
+        ret.append(item)
+    return ret
+
+# \todo: check this
+# XXX
+# Ok, this is very dirty.
+# On FreeBSD < 8 we cannot gather per-cpu information, see:
+# http://code.google.com/p/psutil/issues/detail?id=226
+# If NUM_CPUS > 1, on first call we return single cpu times to avoid a
+# crash at psutil import time.
+# Next calls will fail with NotImplementedError
+if not hasattr(_psutil_netbsd, "get_system_per_cpu_times"):
+    def get_system_per_cpu_times():
+        if NUM_CPUS == 1:
+            return [get_system_cpu_times]
+        if get_system_per_cpu_times.__called__:
+            raise NotImplementedError("supported only starting from FreeBSD 8")
+        get_system_per_cpu_times.__called__ = True
+        return [get_system_cpu_times]
+get_system_per_cpu_times.__called__ = False
+
+def disk_partitions(all=False):
+    retlist = []
+    partitions = _psutil_netbsd.get_disk_partitions()
+    for partition in partitions:
+        device, mountpoint, fstype, opts = partition
+        if device == 'none':
+            device = ''
+        if not all:
+            if not os.path.isabs(device) \
+            or not os.path.exists(device):
+                continue
+        ntuple = nt_partition(device, mountpoint, fstype, opts)
+        retlist.append(ntuple)
+    return retlist
+
+def get_system_users():
+    retlist = []
+    rawlist = _psutil_netbsd.get_system_users()
+    for item in rawlist:
+        user, tty, hostname, tstamp = item
+        if tty == '~':
+            continue  # reboot or shutdown
+        nt = nt_user(user, tty or None, hostname, tstamp)
+        retlist.append(nt)
+    return retlist
+
+get_pid_list = _psutil_netbsd.get_pid_list
+pid_exists = _psposix.pid_exists
+get_disk_usage = _psposix.get_disk_usage
+net_io_counters = _psutil_netbsd.get_net_io_counters
+disk_io_counters = _psutil_netbsd.get_disk_io_counters
+
+
+def wrap_exceptions(fun):
+    """Decorator which translates bare OSError exceptions into
+    NoSuchProcess and AccessDenied.
+    """
+    @wraps(fun)
+    def wrapper(self, *args, **kwargs):
+        try:
+            return fun(self, *args, **kwargs)
+        except OSError:
+            err = sys.exc_info()[1]
+            if err.errno == errno.ESRCH:
+                raise NoSuchProcess(self.pid, self._process_name)
+            if err.errno in (errno.EPERM, errno.EACCES):
+                raise AccessDenied(self.pid, self._process_name)
+            raise
+    return wrapper
+
+_status_map = {
+    _psutil_netbsd.SSTOP : STATUS_STOPPED,
+    _psutil_netbsd.SIDL : STATUS_IDLE,
+    _psutil_netbsd.SACTIVE : STATUS_RUNNING,
+# \todo: to what to map this?
+#    _psutil_netbsd.SDYING : STATUS_IDLE,
+    _psutil_netbsd.SDEAD : STATUS_DEAD,
+    _psutil_netbsd.SZOMB : STATUS_ZOMBIE,
+}
+
+_conn_status_map = {_psutil_netbsd.TCPS_ESTABLISHED : CONN_ESTABLISHED,
+                    _psutil_netbsd.TCPS_SYN_SENT : CONN_SYN_SENT,
+                    _psutil_netbsd.TCPS_SYN_RECEIVED : CONN_SYN_RECV,
+                    _psutil_netbsd.TCPS_FIN_WAIT_1 : CONN_FIN_WAIT1,
+                    _psutil_netbsd.TCPS_FIN_WAIT_2 : CONN_FIN_WAIT2,
+                    _psutil_netbsd.TCPS_TIME_WAIT : CONN_TIME_WAIT,
+                    _psutil_netbsd.TCPS_CLOSED : CONN_CLOSE,
+                    _psutil_netbsd.TCPS_CLOSE_WAIT : CONN_CLOSE_WAIT,
+                    _psutil_netbsd.TCPS_LAST_ACK : CONN_LAST_ACK,
+                    _psutil_netbsd.TCPS_LISTEN : CONN_LISTEN,
+                    _psutil_netbsd.TCPS_CLOSING : CONN_CLOSING,
+                    }
+
+
+class Process(object):
+    """Wrapper class around underlying C implementation."""
+
+    __slots__ = ["pid", "_process_name"]
+
+    def __init__(self, pid):
+        self.pid = pid
+        self._process_name = None
+
+    @wrap_exceptions
+    def get_process_name(self):
+        """Return process name as a string of limited len (15)."""
+        return _psutil_netbsd.get_process_name(self.pid)
+
+    @wrap_exceptions
+    def get_process_exe(self):
+        """Return process executable pathname."""
+        return _psutil_netbsd.get_process_exe(self.pid)
+
+    @wrap_exceptions
+    def get_process_cmdline(self):
+        """Return process cmdline as a list of arguments."""
+        return _psutil_netbsd.get_process_cmdline(self.pid)
+
+    @wrap_exceptions
+    def get_process_terminal(self):
+        tty_nr = _psutil_netbsd.get_process_tty_nr(self.pid)
+        tmap = _psposix._get_terminal_map()
+        try:
+            return tmap[tty_nr]
+        except KeyError:
+            return None
+
+    @wrap_exceptions
+    def get_process_ppid(self):
+        """Return process parent pid."""
+        return _psutil_netbsd.get_process_ppid(self.pid)
+
+    # XXX - available on FreeBSD >= 8 only
+    if hasattr(_psutil_netbsd, "get_process_cwd"):
+        @wrap_exceptions
+        def get_process_cwd(self):
+            """Return process current working directory."""
+            # sometimes we get an empty string, in which case we turn
+            # it into None
+            return _psutil_netbsd.get_process_cwd(self.pid) or None
+
+    @wrap_exceptions
+    def get_process_uids(self):
+        """Return real, effective and saved user ids."""
+        real, effective, saved = _psutil_netbsd.get_process_uids(self.pid)
+        return nt_uids(real, effective, saved)
+
+    @wrap_exceptions
+    def get_process_gids(self):
+        """Return real, effective and saved group ids."""
+        real, effective, saved = _psutil_netbsd.get_process_gids(self.pid)
+        return nt_gids(real, effective, saved)
+
+    @wrap_exceptions
+    def get_cpu_times(self):
+        """return a tuple containing process user/kernel time."""
+        user, system = _psutil_netbsd.get_process_cpu_times(self.pid)
+        return nt_cputimes(user, system)
+
+    @wrap_exceptions
+    def get_memory_info(self):
+        """Return a tuple with the process' RSS and VMS size."""
+        rss, vms = _psutil_netbsd.get_process_memory_info(self.pid)[:2]
+        return nt_meminfo(rss, vms)
+
+    _nt_ext_mem = namedtuple('meminfo', 'rss vms text data stack')
+
+    @wrap_exceptions
+    def get_ext_memory_info(self):
+        return self._nt_ext_mem(*_psutil_netbsd.get_process_memory_info(self.pid))
+
+    @wrap_exceptions
+    def get_process_create_time(self):
+        """Return the start time of the process as a number of seconds since
+        the epoch."""
+        return _psutil_netbsd.get_process_create_time(self.pid)
+
+    @wrap_exceptions
+    def get_process_num_threads(self):
+        """Return the number of threads belonging to the process."""
+        return _psutil_netbsd.get_process_num_threads(self.pid)
+
+    @wrap_exceptions
+    def get_num_ctx_switches(self):
+        return nt_ctxsw(*_psutil_netbsd.get_process_num_ctx_switches(self.pid))
+
+    @wrap_exceptions
+    def get_num_fds(self):
+        """Return the number of file descriptors opened by this process."""
+        return _psutil_netbsd.get_process_num_fds(self.pid)
+
+    @wrap_exceptions
+    def get_process_threads(self):
+        """Return the number of threads belonging to the process."""
+        rawlist = _psutil_netbsd.get_process_threads(self.pid)
+        retlist = []
+        for thread_id, utime, stime in rawlist:
+            ntuple = nt_thread(thread_id, utime, stime)
+            retlist.append(ntuple)
+        return retlist
+
+    @wrap_exceptions
+    def get_open_files(self):
+        """Return files opened by process as a list of namedtuples."""
+        # XXX - C implementation available on FreeBSD >= 8 only
+        # else fallback on lsof parser
+        if hasattr(_psutil_netbsd, "get_process_open_files"):
+            rawlist = _psutil_netbsd.get_process_open_files(self.pid)
+            return [nt_openfile(path, fd) for path, fd in rawlist]
+        else:
+            lsof = _psposix.LsofParser(self.pid, self._process_name)
+            return lsof.get_process_open_files()
+
+    @wrap_exceptions
+    def get_connections(self, kind='inet'):
+        """Return etwork connections opened by a process as a list of
+        namedtuples.
+        """
+        if kind not in conn_tmap:
+            raise ValueError("invalid %r kind argument; choose between %s"
+                             % (kind, ', '.join([repr(x) for x in conn_tmap])))
+        families, types = conn_tmap[kind]
+        rawlist = _psutil_netbsd.get_process_connections(self.pid, families,
+                                                         types)
+        ret = []
+        for item in rawlist:
+            fd, fam, type, laddr, raddr, status = item
+            status = _conn_status_map[status]
+            nt = nt_connection(fd, fam, type, laddr, raddr, status)
+            ret.append(nt)
+        return ret
+
+    @wrap_exceptions
+    def process_wait(self, timeout=None):
+        try:
+            return _psposix.wait_pid(self.pid, timeout)
+        except TimeoutExpired:
+            raise TimeoutExpired(self.pid, self._process_name)
+
+    @wrap_exceptions
+    def get_process_nice(self):
+        return _psutil_posix.getpriority(self.pid)
+
+    @wrap_exceptions
+    def set_process_nice(self, value):
+        return _psutil_posix.setpriority(self.pid, value)
+
+    @wrap_exceptions
+    def get_process_status(self):
+        code = _psutil_netbsd.get_process_status(self.pid)
+        if code in _status_map:
+            return _status_map[code]
+        # XXX is this legit? will we even ever get here?
+        return "?"
+
+    @wrap_exceptions
+    def get_process_io_counters(self):
+        rc, wc, rb, wb = _psutil_netbsd.get_process_io_counters(self.pid)
+        return nt_io(rc, wc, rb, wb)
+
+    nt_mmap_grouped = namedtuple('mmap',
+        'path rss, private, ref_count, shadow_count')
+    nt_mmap_ext = namedtuple('mmap',
+        'addr, perms path rss, private, ref_count, shadow_count')
+
+    @wrap_exceptions
+    def get_memory_maps(self):
+        return _psutil_netbsd.get_process_memory_maps(self.pid)
+
+    # FreeBSD < 8 does not support kinfo_getfile() and kinfo_getvmmap()
+    if not hasattr(_psutil_netbsd, 'get_process_open_files'):
+        def _not_implemented(self):
+            raise NotImplementedError("supported only starting from FreeBSD 8")
+        get_open_files = _not_implemented
+        get_process_cwd = _not_implemented
+        get_memory_maps = _not_implemented
+        get_num_fds = _not_implemented