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Increase stack size for all secondary threads on Apple platforms

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This commit is contained in:
Mikael Hermansson
2025-10-13 11:56:21 +02:00
parent 0fdb93cde6
commit b320a6569e
3 changed files with 16 additions and 32 deletions
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29
core/object/worker_thread_pool.cpp
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@@ -364,24 +364,12 @@ WorkerThreadPool::TaskID WorkerThreadPool::_add_task(const Callable &p_callable,
if (pump_task_count >= thread_count) {
print_verbose(vformat("A greater number of dedicated threads were requested (%d) than threads available (%d). Please increase the number of available worker task threads. Recovering this session by spawning more worker task threads.", pump_task_count + 1, thread_count)); // +1 because we want to keep a Thread without any pump tasks free.
Thread::Settings settings;
#ifdef __APPLE__
// The default stack size for new threads on Apple platforms is 512KiB.
// This is insufficient when using a library like SPIRV-Cross,
// which can generate deep stacks and result in a stack overflow.
#ifdef DEV_ENABLED
// Debug builds need an even larger stack size.
settings.stack_size = 2 * 1024 * 1024; // 2 MiB
#else
settings.stack_size = 1 * 1024 * 1024; // 1 MiB
#endif
#endif
// Re-sizing implies relocation, which is not supported for this array.
CRASH_COND_MSG(thread_count + 1 > (int)threads.get_capacity(), "Reserve trick for worker thread pool failed. Crashing.");
threads.resize_initialized(thread_count + 1);
threads[thread_count].index = thread_count;
threads[thread_count].pool = this;
threads[thread_count].thread.start(&WorkerThreadPool::_thread_function, &threads[thread_count], settings);
threads[thread_count].thread.start(&WorkerThreadPool::_thread_function, &threads[thread_count]);
thread_ids.insert(threads[thread_count].thread.get_id(), thread_count);
}
}
@@ -838,23 +826,10 @@ void WorkerThreadPool::init(int p_thread_count, float p_low_priority_task_ratio)
#endif
threads.resize(p_thread_count);
Thread::Settings settings;
#ifdef __APPLE__
// The default stack size for new threads on Apple platforms is 512KiB.
// This is insufficient when using a library like SPIRV-Cross,
// which can generate deep stacks and result in a stack overflow.
#ifdef DEV_ENABLED
// Debug builds need an even larger stack size.
settings.stack_size = 2 * 1024 * 1024; // 2 MiB
#else
settings.stack_size = 1 * 1024 * 1024; // 1 MiB
#endif
#endif
for (uint32_t i = 0; i < threads.size(); i++) {
threads[i].index = i;
threads[i].pool = this;
threads[i].thread.start(&WorkerThreadPool::_thread_function, &threads[i], settings);
threads[i].thread.start(&WorkerThreadPool::_thread_function, &threads[i]);
thread_ids.insert(threads[i].thread.get_id(), i);
}
}