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author | Christian Heimes <christian@cheimes.de> | 2008-01-18 09:56:22 (GMT) |
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committer | Christian Heimes <christian@cheimes.de> | 2008-01-18 09:56:22 (GMT) |
commit | 679db4aa99352abc3c9d93dcfc30e772760a43da (patch) | |
tree | a03e70818c211151cd9b9482d5f5563d93d9cd07 /Doc/library/sched.rst | |
parent | ff72122184556afae962f32b7d7ac47bb2d5de33 (diff) | |
download | cpython-679db4aa99352abc3c9d93dcfc30e772760a43da.zip cpython-679db4aa99352abc3c9d93dcfc30e772760a43da.tar.gz cpython-679db4aa99352abc3c9d93dcfc30e772760a43da.tar.bz2 |
Merged revisions 59985-60000,60002,60005-60007,60009-60042 via svnmerge from
svn+ssh://pythondev@svn.python.org/python/trunk
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r59987 | raymond.hettinger | 2008-01-15 21:52:42 +0100 (Tue, 15 Jan 2008) | 1 line
Refactor if/elif chain for clarity and speed. Remove dependency on subclasses having to implement _empty and _full.
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r59988 | raymond.hettinger | 2008-01-15 22:22:47 +0100 (Tue, 15 Jan 2008) | 1 line
Fix-up half-written paragraph in the docs
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r59989 | amaury.forgeotdarc | 2008-01-15 22:25:11 +0100 (Tue, 15 Jan 2008) | 3 lines
test_doctest fails since r59984.
Not sure if these are the correct values, but save_stdout has to be set before its usage...
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r59992 | andrew.kuchling | 2008-01-16 01:32:03 +0100 (Wed, 16 Jan 2008) | 1 line
Docstring typos
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r59993 | andrew.kuchling | 2008-01-16 04:17:25 +0100 (Wed, 16 Jan 2008) | 1 line
Add PEP 3141 section
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r59998 | andrew.kuchling | 2008-01-16 14:01:51 +0100 (Wed, 16 Jan 2008) | 1 line
Markup fix
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r59999 | georg.brandl | 2008-01-16 17:56:29 +0100 (Wed, 16 Jan 2008) | 2 lines
Fix MSDN library URL. (#1854)
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r60006 | georg.brandl | 2008-01-16 21:27:56 +0100 (Wed, 16 Jan 2008) | 3 lines
Add Python-specific content to Doc dir. Update configuration file
to work with the newest Sphinx.
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r60007 | georg.brandl | 2008-01-16 21:29:00 +0100 (Wed, 16 Jan 2008) | 2 lines
Doc build should work with 2.4 now.
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r60009 | raymond.hettinger | 2008-01-17 00:38:16 +0100 (Thu, 17 Jan 2008) | 1 line
Minor wordsmithing.
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r60010 | raymond.hettinger | 2008-01-17 00:40:45 +0100 (Thu, 17 Jan 2008) | 1 line
Add queues will alternative fetch orders (priority based and stack based).
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r60011 | raymond.hettinger | 2008-01-17 00:49:35 +0100 (Thu, 17 Jan 2008) | 1 line
Add news entry.
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r60013 | raymond.hettinger | 2008-01-17 04:02:14 +0100 (Thu, 17 Jan 2008) | 1 line
Make starmap() match its pure python definition and accept any itertable input (not just tuples).
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r60015 | gregory.p.smith | 2008-01-17 08:43:20 +0100 (Thu, 17 Jan 2008) | 3 lines
Comply with RFC 3207.
Fixes issue 829951 - http://bugs.python.org/issue829951
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r60018 | gregory.p.smith | 2008-01-17 09:03:17 +0100 (Thu, 17 Jan 2008) | 2 lines
entry for r60015
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r60019 | raymond.hettinger | 2008-01-17 09:07:05 +0100 (Thu, 17 Jan 2008) | 1 line
Note versionadded.
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r60020 | gregory.p.smith | 2008-01-17 09:35:49 +0100 (Thu, 17 Jan 2008) | 8 lines
Fixes (accepts patch) issue1339 - http://bugs.python.org/issue1339
- Factor out the duplication of EHLO/HELO in login() and sendmail() to
a new function, ehlo_or_helo_if_needed().
- Use ehlo_or_helo_if_needed() in starttls()
- Check for the starttls exception in starttls() in the same way as
login() checks for the auth extension.
Contributed by Bill Fenner.
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r60021 | andrew.kuchling | 2008-01-17 13:00:15 +0100 (Thu, 17 Jan 2008) | 1 line
Revise 3141 section a bit; add some Windows items
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r60022 | brett.cannon | 2008-01-17 19:45:10 +0100 (Thu, 17 Jan 2008) | 2 lines
Fix a function pointer declaration to silence the compiler.
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r60024 | raymond.hettinger | 2008-01-17 20:31:38 +0100 (Thu, 17 Jan 2008) | 1 line
Issue #1861: Add read-only attribute listing upcoming events in the order they will be run.
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r60025 | andrew.kuchling | 2008-01-17 20:49:24 +0100 (Thu, 17 Jan 2008) | 1 line
Correction from Jordan Lewis: halfdelay() uses tenths of a second, not milliseconds
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r60026 | raymond.hettinger | 2008-01-17 23:27:49 +0100 (Thu, 17 Jan 2008) | 1 line
Add advice on choosing between scheduler and threading.Timer().
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r60028 | christian.heimes | 2008-01-18 00:01:44 +0100 (Fri, 18 Jan 2008) | 2 lines
Updated new property syntax. An elaborate example for subclassing and the getter was missing.
Added comment about VS 2008 and PGO builds.
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r60029 | raymond.hettinger | 2008-01-18 00:32:01 +0100 (Fri, 18 Jan 2008) | 1 line
Fix-up Timer() example.
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r60030 | raymond.hettinger | 2008-01-18 00:56:56 +0100 (Fri, 18 Jan 2008) | 1 line
Fix markup
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r60031 | raymond.hettinger | 2008-01-18 01:10:42 +0100 (Fri, 18 Jan 2008) | 1 line
clearcache() needs to remove the dict as well as clear it.
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r60033 | andrew.kuchling | 2008-01-18 03:26:16 +0100 (Fri, 18 Jan 2008) | 1 line
Bump verson
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r60034 | andrew.kuchling | 2008-01-18 03:42:52 +0100 (Fri, 18 Jan 2008) | 1 line
Typo fix
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r60035 | christian.heimes | 2008-01-18 08:30:20 +0100 (Fri, 18 Jan 2008) | 3 lines
Coverity issue CID #197
var_decl: Declared variable "stm" without initializer
ninit_use_in_call: Using uninitialized value "stm" (field "stm".tm_zone uninitialized) in call to function "mktime"
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r60036 | christian.heimes | 2008-01-18 08:45:30 +0100 (Fri, 18 Jan 2008) | 11 lines
Coverity issue CID #167
Event alloc_fn: Called allocation function "metacompile" [model]
Event var_assign: Assigned variable "gr" to storage returned from "metacompile"
gr = metacompile(n);
Event pass_arg: Variable "gr" not freed or pointed-to in function "maketables" [model]
g = maketables(gr);
translatelabels(g);
addfirstsets(g);
Event leaked_storage: Returned without freeing storage "gr"
return g;
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r60038 | christian.heimes | 2008-01-18 09:04:57 +0100 (Fri, 18 Jan 2008) | 3 lines
Coverity issue CID #182
size_error: Allocating 1 bytes to pointer "children", which needs at least 4 bytes
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r60041 | christian.heimes | 2008-01-18 09:47:59 +0100 (Fri, 18 Jan 2008) | 4 lines
Coverity issue CID #169
local_ptr_assign_local: Assigning address of stack variable "namebuf" to pointer "filename"
out_of_scope: Variable "namebuf" goes out of scope
use_invalid: Used "filename" pointing to out-of-scope variable "namebuf"
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r60042 | christian.heimes | 2008-01-18 09:53:45 +0100 (Fri, 18 Jan 2008) | 2 lines
Coverity CID #168
leaked_storage: Returned without freeing storage "fp"
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Diffstat (limited to 'Doc/library/sched.rst')
-rw-r--r-- | Doc/library/sched.rst | 35 |
1 files changed, 34 insertions, 1 deletions
diff --git a/Doc/library/sched.rst b/Doc/library/sched.rst index 57f9b5c..5dfa456 100644 --- a/Doc/library/sched.rst +++ b/Doc/library/sched.rst @@ -41,13 +41,39 @@ Example:: From print_time 930343700.273 930343700.276 +In multi-threaded environments, the :class:`scheduler` class has limitations +with respect to thread-safety, inability to insert a new task before +the one currently pending in a running scheduler, and holding up the main +thread until the event queue is empty. Instead, the preferred approach +is to use the :class:`threading.Timer` class instead. + +Example:: + + >>> import time + >>> from threading import Timer + >>> def print_time(): + ... print "From print_time", time.time() + ... + >>> def print_some_times(): + ... print time.time() + ... Timer(5, print_time, ()).start() + ... Timer(10, print_time, ()).start() + ... time.sleep(11) # sleep while time-delay events execute + ... print time.time() + ... + >>> print_some_times() + 930343690.257 + From print_time 930343695.274 + From print_time 930343700.273 + 930343701.301 + .. _scheduler-objects: Scheduler Objects ----------------- -:class:`scheduler` instances have the following methods: +:class:`scheduler` instances have the following methods and attributes: .. method:: scheduler.enterabs(time, priority, action, argument) @@ -98,3 +124,10 @@ Scheduler Objects the calling code is responsible for canceling events which are no longer pertinent. +.. attribute:: scheduler.queue + + Read-only attribute returning a list of upcoming events in the order they + will be run. Each event is shown as a :term:`named tuple` with the + following fields: time, priority, action, argument. + + .. versionadded:: 2.6 |