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+TODO
+====
+
+A collection of ideas and notes about stuff to implement in future versions.
+"#NNN" occurrences refer to bug tracker issues at:
+https://github.com/giampaolo/psutil/issues
+
+
+HIGHER PRIORITY
+===============
+
+ * OpenBSD support.
+
+ * #371: CPU temperature (apparently OSX and Linux only; on Linux it requires
+   lm-sensors lib).
+
+ * #269: expose network ifaces RX/TW queues. This should probably go into
+   net_if_stats(). Figure out on what platforms this is supported:
+   Linux: yes
+   Others: ?
+
+ * Process.threads(): thread names; patch for OSX available at:
+   https://code.google.com/p/plcrashreporter/issues/detail?id=65
+
+ * Asynchronous psutil.Popen (see http://bugs.python.org/issue1191964)
+
+ * (Windows) fall back on using WMIC for Process methods returning AccessDenied
+
+ * #613: thread names.
+
+ * #604: emulate os.getloadavg() on Windows
+
+ * #269: NIC rx/tx queue.
+
+
+LOWER PRIORITY
+==============
+
+ * #355: Android support.
+
+ * #276: GNU/Hurd support.
+
+ * #429: NetBSD support.
+
+ * DragonFlyBSD support?
+
+ * AIX support?
+
+ * examples/taskmgr-gui.py (using tk).
+
+ * system-wide number of open file descriptors:
+    * https://jira.hyperic.com/browse/SIGAR-30
+    * http://www.netadmintools.com/part295.html
+
+ * Number of system threads.
+    * Windows: http://msdn.microsoft.com/en-us/library/windows/desktop/ms684824(v=vs.85).aspx
+
+ * #357: what CPU a process is on.
+
+  * Doc / wiki which compares similarities between UNIX cli tools and psutil.
+   Example:
+   df -a  ->  psutil.disk_partitions
+   lsof   ->  psutil.Process.open_files() and psutil.Process.open_connections()
+   killall->  (actual script)
+   tty    ->  psutil.Process.terminal()
+   who    ->  psutil.users()
+
+
+DEBATABLE
+=========
+
+ * psutil.proc_tree() something which obtains a {pid:ppid, ...} dict for
+   all running processes in one shot. This can be factored out from
+   Process.children() and exposed as a first class function.
+   PROS: on Windows we can take advantage of _psutil_windows.ppid_map()
+   which is faster than iterating over all pids and calling ppid().
+   CONS: examples/pstree.py shows this can be easily done in the user code
+   so maybe it's not worth the addition.
+
+ * advanced cmdline interface exposing the whole API and providing different
+   kind of outputs (e.g. pprinted, colorized, json).
+
+ * [Linux]: process cgroups (http://en.wikipedia.org/wiki/Cgroups). They look
+   similar to prlimit() in terms of functionality but uglier (they should allow
+   limiting per-process network IO resources though, which is great). Needs
+   further reading.
+
+ * Should we expose OS constants (psutil.WINDOWS, psutil.OSX etc.)?
+
+ * Python 3.3. exposed different sched.h functions:
+   http://docs.python.org/dev/whatsnew/3.3.html#os
+   http://bugs.python.org/issue12655
+   http://docs.python.org/dev/library/os.html#interface-to-the-scheduler
+   It might be worth to take a look and figure out whether we can include some
+   of those in psutil.
+   Also, we can probably reimplement wait_pid() on POSIX which is currently
+   implemented as a busy-loop.
+
+ * Certain systems provide CPU times about process children. On those systems
+   Process.cpu_times() might return a (user, system, user_children,
+   system_children) ntuple.
+   * Linux: /proc/{PID}/stat
+   * Solaris: pr_cutime and pr_cstime
+   * FreeBSD: none
+   * OSX: none
+   * Windows: none
+
+ * ...also, os.times() provides 'elapsed' times as well.
+
+ * ...also Linux provides guest_time and cguest_time.
+
+ * Enrich exception classes hierarchy on Python >= 3.3 / post PEP-3151 so that:
+   - NoSuchProcess inherits from ProcessLookupError
+   - AccessDenied inherits from PermissionError
+   - TimeoutExpired inherits from TimeoutError (debatable)
+   See: http://docs.python.org/3/library/exceptions.html#os-exceptions
+
+ * Process.threads() might grow an extra "id" parameter so that it can be
+   used as such:
+
+    >>> p = psutil.Process(os.getpid())
+    >>> p.threads(id=psutil.current_thread_id())
+    thread(id=2539, user_time=0.03, system_time=0.02)
+    >>>
+
+   Note: this leads to questions such as "should we have a custom NoSuchThread
+   exception? Also see issue #418.
+
+   Note #2: this would work with os.getpid() only.
+   psutil.current_thread_id() might be desirable as per issue #418 though.
+
+  * should psutil.TimeoutExpired exception have a 'msg' kwarg similar to
+    NoSuchProcess and AccessDenied? Not that we need it, but currently we
+    cannot raise a TimeoutExpired exception with a specific error string.
+
+  * process_iter() might grow an "attrs" parameter similar to Process.as_dict()
+    invoke the necessary methods and include the results into a "cache"
+    attribute attached to the returned Process instances so that one can avoid
+    catching NSP and AccessDenied:
+        for p in process_iter(attrs=['cpu_percent']):
+            print(p.cache['cpu_percent'])
+    This also leads questions as whether we should introduce a sorting order.
+
+  * round Process.memory_percent() result?
+
+  * #550: number of threads per core.
+
+  * Have psutil.Process().cpu_affinity([]) be an alias for "all CPUs"?
+
+
+COMPATIBILITY BREAKAGE
+======================
+
+Removals (will likely happen in 2.2):
+
+ * (S) psutil.Process.nice  (deprecated in 0.5.0)
+ * (S) get_process_list  (deprecated in 0.5.0)
+ * (S) psutil.*mem* functions  (deprecated in 0.3.0 and 0.6.0)
+ * (M) psutil.network_io_counters  (deprecated in 1.0.0)
+ * (M) local_address and remote_address Process.connection() namedtuple fields
+       (deprecated in 1.0.0)
+
+
+REJECTED IDEAS
+==============
+
+STUB