[3.8] bpo-18049: Sync thread stack size to main thread size on macOS (GH-14748) by miss-islington · Pull Request #15065 · python/cpython (original) (raw)

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[3.8] bpo-18049: Sync thread stack size to main thread size on macOS (GH-14748) #15065

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2 changes: 0 additions & 2 deletions Lib/test/test_threading.py

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Original file line number Diff line number Diff line change
Expand Up @@ -1049,8 +1049,6 @@ def test_releasing_unacquired_lock(self):
lock = threading.Lock()
self.assertRaises(RuntimeError, lock.release)
@unittest.skipUnless(sys.platform == 'darwin' and test.support.python_is_optimized(),
'test macosx problem')
def test_recursion_limit(self):
# Issue 9670
# test that excessive recursion within a non-main thread causes
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3 changes: 3 additions & 0 deletions Misc/NEWS.d/next/macOS/2019-07-13-15-58-18.bpo-18049.MklhQQ.rst

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Original file line number Diff line number Diff line change
@@ -0,0 +1,3 @@
Increase the default stack size of threads from 5MB to 16MB on macOS, to
match the stack size of the main thread. This avoids crashes on deep recursion
in threads.

3 changes: 2 additions & 1 deletion Python/thread_pthread.h

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Original file line number Diff line number Diff line change
Expand Up @@ -40,7 +40,8 @@
*/
#if defined(__APPLE__) && defined(THREAD_STACK_SIZE) && THREAD_STACK_SIZE == 0
#undef THREAD_STACK_SIZE
#define THREAD_STACK_SIZE 0x500000
/* Note: This matches the value of -Wl,-stack_size in configure.ac */
#define THREAD_STACK_SIZE 0x1000000
#endif
#if defined(__FreeBSD__) && defined(THREAD_STACK_SIZE) && THREAD_STACK_SIZE == 0
#undef THREAD_STACK_SIZE
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2 changes: 2 additions & 0 deletions configure

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Original file line number Diff line number Diff line change
Expand Up @@ -9542,6 +9542,8 @@ then
# Issue #18075: the default maximum stack size (8MBytes) is too
# small for the default recursion limit. Increase the stack size
# to ensure that tests don't crash
# Note: This matches the value of THREAD_STACK_SIZE in
# thread_pthread.h
LINKFORSHARED="-Wl,-stack_size,1000000 $LINKFORSHARED"
if test "$enable_framework"
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2 changes: 2 additions & 0 deletions configure.ac

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Original file line number Diff line number Diff line change
Expand Up @@ -2694,6 +2694,8 @@ then
# Issue #18075: the default maximum stack size (8MBytes) is too
# small for the default recursion limit. Increase the stack size
# to ensure that tests don't crash
# Note: This matches the value of THREAD_STACK_SIZE in
# thread_pthread.h
LINKFORSHARED="-Wl,-stack_size,1000000 $LINKFORSHARED"
if test "$enable_framework"
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