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Issue #7242: On Solaris 9 and earlier calling os.fork() from within a

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thread could raise an incorrect RuntimeError about not holding the import
lock.  The import lock is now reinitialized after fork.
This commit is contained in:
Gregory P. Smith 2010-03-01 01:22:39 +00:00
parent cce211f88c
commit 9e5d1327f8
4 changed files with 72 additions and 15 deletions
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12
Python/import.c
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@ -301,14 +301,18 @@ _PyImport_ReleaseLock(void)
return 1;
}
/* This function used to be called from PyOS_AfterFork to ensure that newly
created child processes do not share locks with the parent, but for some
reason only on AIX systems. Instead of re-initializing the lock, we now
acquire the import lock around fork() calls. */
/* This function is called from PyOS_AfterFork to ensure that newly
created child processes do not share locks with the parent.
We now acquire the import lock around fork() calls but on some platforms
(Solaris 9 and earlier? see isue7242) that still left us with problems. */
void
_PyImport_ReInitLock(void)
{
if (import_lock != NULL)
import_lock = PyThread_allocate_lock();
import_lock_thread = -1;
import_lock_level = 0;
}
#endif