a8ec7845e0
Also replace "num" with: - "number" when it's not used to denote the number of items. - "digits" when digits in a string are being manipulated.
56 lines
1.8 KiB
C
56 lines
1.8 KiB
C
/* SPDX-License-Identifier: GPL-2.0-or-later
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* Copyright 2008 Blender Foundation. All rights reserved. */
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#pragma once
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/** \file
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* \ingroup bli
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*
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* Shared logic for #BLI_task_parallel_mempool to create a threaded iterator,
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* without exposing the these functions publicly.
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*/
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#include "BLI_compiler_attrs.h"
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#include "BLI_mempool.h"
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#include "BLI_task.h"
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typedef struct BLI_mempool_threadsafe_iter {
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BLI_mempool_iter iter;
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struct BLI_mempool_chunk **curchunk_threaded_shared;
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} BLI_mempool_threadsafe_iter;
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typedef struct ParallelMempoolTaskData {
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BLI_mempool_threadsafe_iter ts_iter;
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TaskParallelTLS tls;
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} ParallelMempoolTaskData;
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/**
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* Initialize an array of mempool iterators, #BLI_MEMPOOL_ALLOW_ITER flag must be set.
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*
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* This is used in threaded code, to generate as much iterators as needed
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* (each task should have its own),
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* such that each iterator goes over its own single chunk,
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* and only getting the next chunk to iterate over has to be
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* protected against concurrency (which can be done in a lock-less way).
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*
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* To be used when creating a task for each single item in the pool is totally overkill.
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*
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* See #BLI_task_parallel_mempool implementation for detailed usage example.
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*/
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ParallelMempoolTaskData *mempool_iter_threadsafe_create(BLI_mempool *pool,
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size_t iter_num) ATTR_WARN_UNUSED_RESULT
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ATTR_NONNULL();
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void mempool_iter_threadsafe_destroy(ParallelMempoolTaskData *iter_arr) ATTR_NONNULL();
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/**
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* A version of #BLI_mempool_iterstep that uses
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* #BLI_mempool_threadsafe_iter.curchunk_threaded_shared for threaded iteration support.
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* (threaded section noted in comments).
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*/
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void *mempool_iter_threadsafe_step(BLI_mempool_threadsafe_iter *iter);
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#ifdef __cplusplus
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}
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#endif
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