rp2/mpthreadport: Ensure core1 doesn't hold gc lock in deinit.
Prior to this commit the following code would lock up the device when Ctrl-D is entered at the REPL: import gc, _thread def collect_thread(): while True: gc.collect() _thread.start_new_thread(collect_thread, []) Fixes part of #8494. Signed-off-by: Jim Mussared <jim.mussared@gmail.com>
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@ -47,8 +47,13 @@ void mp_thread_init(void) {
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}
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void mp_thread_deinit(void) {
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assert(get_core_num() == 0);
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// Must ensure that core1 is not currently holding the GC lock, otherwise
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// it will be terminated while holding the lock.
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mp_thread_mutex_lock(&MP_STATE_MEM(gc_mutex), 1);
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multicore_reset_core1();
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core1_entry = NULL;
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mp_thread_mutex_unlock(&MP_STATE_MEM(gc_mutex));
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}
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void mp_thread_gc_others(void) {
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