e955c94ed3
Listing the "Blender Foundation" as copyright holder implied the Blender Foundation holds copyright to files which may include work from many developers. While keeping copyright on headers makes sense for isolated libraries, Blender's own code may be refactored or moved between files in a way that makes the per file copyright holders less meaningful. Copyright references to the "Blender Foundation" have been replaced with "Blender Authors", with the exception of `./extern/` since these this contains libraries which are more isolated, any changed to license headers there can be handled on a case-by-case basis. Some directories in `./intern/` have also been excluded: - `./intern/cycles/` it's own `AUTHORS` file is planned. - `./intern/opensubdiv/`. An "AUTHORS" file has been added, using the chromium projects authors file as a template. Design task: #110784 Ref !110783.
77 lines
2.0 KiB
C++
77 lines
2.0 KiB
C++
/* SPDX-FileCopyrightText: 2019 Blender Authors
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*
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* SPDX-License-Identifier: GPL-2.0-or-later */
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/** \file
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* \ingroup depsgraph
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*/
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#include <memory>
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#include <mutex>
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#include "intern/depsgraph_registry.h"
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#include "BLI_utildefines.h"
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#include "intern/depsgraph.h"
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namespace blender::deg {
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/* Global registry for dependency graphs associated with a main database.
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*
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* Threads may add or remove depsgraphs for different mains concurrently
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* (for example for preview rendering), but not the same main. */
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/* Use pointer for map value to ensure span returned by get_all_registered_graphs
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* remains unchanged as other mains are added or removed. */
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using GraphSetPtr = std::unique_ptr<VectorSet<Depsgraph *>>;
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struct GraphRegistry {
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Map<Main *, GraphSetPtr> map;
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std::mutex mutex;
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};
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static GraphRegistry &get_graph_registry()
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{
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static GraphRegistry graph_registry;
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return graph_registry;
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}
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void register_graph(Depsgraph *depsgraph)
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{
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GraphRegistry &graph_registry = get_graph_registry();
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Main *bmain = depsgraph->bmain;
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std::lock_guard<std::mutex> lock{graph_registry.mutex};
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graph_registry.map
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.lookup_or_add_cb(bmain, []() { return std::make_unique<VectorSet<Depsgraph *>>(); })
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->add_new(depsgraph);
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}
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void unregister_graph(Depsgraph *depsgraph)
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{
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Main *bmain = depsgraph->bmain;
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GraphRegistry &graph_registry = get_graph_registry();
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std::lock_guard<std::mutex> lock{graph_registry.mutex};
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GraphSetPtr &graphs = graph_registry.map.lookup(bmain);
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graphs->remove(depsgraph);
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/* If this was the last depsgraph associated with the main, remove the main entry as well. */
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if (graphs->is_empty()) {
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graph_registry.map.remove(bmain);
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}
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}
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Span<Depsgraph *> get_all_registered_graphs(Main *bmain)
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{
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GraphRegistry &graph_registry = get_graph_registry();
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std::lock_guard<std::mutex> lock{graph_registry.mutex};
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GraphSetPtr *graphs = graph_registry.map.lookup_ptr(bmain);
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if (graphs) {
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return **graphs;
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}
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return {};
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}
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} // namespace blender::deg
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