diff options
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 9ffd5cd581..f80eb22e18 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 999519f0ce..ef30743b70 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 ============= |