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/* SPDX-License-Identifier: GPL-2.0-or-later */
#include "BLI_cache_mutex.hh"
#include "BLI_task.hh"
namespace blender {
void CacheMutex::ensure(const FunctionRef<void()> compute_cache)
{
if (cache_valid_.load(std::memory_order_acquire)) {
return;
}
std::scoped_lock lock{mutex_};
/* Double checked lock. */
if (cache_valid_.load(std::memory_order_relaxed)) {
return;
}
/* Use task isolation because a mutex is locked and the cache computation might use
* multi-threading. */
threading::isolate_task(compute_cache);
cache_valid_.store(true, std::memory_order_release);
}
} // namespace blender
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