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| author | Victor Stinner <vstinner@redhat.com> | 2019-06-14 16:55:22 (GMT) |
|---|---|---|
| committer | GitHub <noreply@github.com> | 2019-06-14 16:55:22 (GMT) |
| commit | 066e5b1a917ec2134e8997d2cadd815724314252 (patch) | |
| tree | 963b0b6d7d2ae0c580aa48da0d1423930bf2a32d /Doc | |
| parent | 212646cae6b7c4ddc8d98c8b9b6d39a5f259e864 (diff) | |
| download | cpython-066e5b1a917ec2134e8997d2cadd815724314252.zip cpython-066e5b1a917ec2134e8997d2cadd815724314252.tar.gz cpython-066e5b1a917ec2134e8997d2cadd815724314252.tar.bz2 | |
bpo-37266: Daemon threads are now denied in subinterpreters (GH-14049)
In a subinterpreter, spawning a daemon thread now raises an
exception. Daemon threads were never supported in subinterpreters.
Previously, the subinterpreter finalization crashed with a Pyton
fatal error if a daemon thread was still running.
* Add _thread._is_main_interpreter()
* threading.Thread.start() now raises RuntimeError if the thread is a
daemon thread and the method is called from a subinterpreter.
* The _thread module now uses Argument Clinic for the new function.
* Use textwrap.dedent() in test_threading.SubinterpThreadingTests
Diffstat (limited to 'Doc')
| -rw-r--r-- | Doc/library/threading.rst | 8 | ||||
| -rw-r--r-- | Doc/whatsnew/3.9.rst | 8 |
2 files changed, 16 insertions, 0 deletions
diff --git a/Doc/library/threading.rst b/Doc/library/threading.rst index 9ffd5cd..f80eb22 100644 --- a/Doc/library/threading.rst +++ b/Doc/library/threading.rst @@ -280,6 +280,8 @@ since it is impossible to detect the termination of alien threads. base class constructor (``Thread.__init__()``) before doing anything else to the thread. + Daemon threads must not be used in subinterpreters. + .. versionchanged:: 3.3 Added the *daemon* argument. @@ -294,6 +296,12 @@ since it is impossible to detect the termination of alien threads. This method will raise a :exc:`RuntimeError` if called more than once on the same thread object. + Raise a :exc:`RuntimeError` if the thread is a daemon thread and the + method is called from a subinterpreter. + + .. versionchanged:: 3.9 + In a subinterpreter, spawning a daemon thread now raises an exception. + .. method:: run() Method representing the thread's activity. diff --git a/Doc/whatsnew/3.9.rst b/Doc/whatsnew/3.9.rst index 999519f..ef30743 100644 --- a/Doc/whatsnew/3.9.rst +++ b/Doc/whatsnew/3.9.rst @@ -86,6 +86,14 @@ New Modules Improved Modules ================ +threading +--------- + +In a subinterpreter, spawning a daemon thread now raises an exception. Daemon +threads were never supported in subinterpreters. Previously, the subinterpreter +finalization crashed with a Pyton fatal error if a daemon thread was still +running. + Optimizations ============= |