2 * Copyright (c) 2017-2018 ARM Limited.
4 * SPDX-License-Identifier: MIT
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11 * furnished to do so, subject to the following conditions:
13 * The above copyright notice and this permission notice shall be included in all
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24 #include "arm_compute/runtime/PoolManager.h"
26 #include "arm_compute/core/Error.h"
27 #include "arm_compute/runtime/IMemoryPool.h"
28 #include "support/ToolchainSupport.h"
32 using namespace arm_compute;
34 PoolManager::PoolManager()
35 : _free_pools(), _occupied_pools(), _sem(), _mtx()
39 IMemoryPool *PoolManager::lock_pool()
41 ARM_COMPUTE_ERROR_ON_MSG(_free_pools.empty() && _occupied_pools.empty(), "Haven't setup any pools!");
44 std::lock_guard<arm_compute::Mutex> lock(_mtx);
45 ARM_COMPUTE_ERROR_ON_MSG(_free_pools.empty(), "Empty pool must exist as semaphore has been signalled");
46 _occupied_pools.splice(std::begin(_occupied_pools), _free_pools, std::begin(_free_pools));
47 return _occupied_pools.front().get();
50 void PoolManager::unlock_pool(IMemoryPool *pool)
52 ARM_COMPUTE_ERROR_ON_MSG(_free_pools.empty() && _occupied_pools.empty(), "Haven't setup any pools!");
54 std::lock_guard<arm_compute::Mutex> lock(_mtx);
55 auto it = std::find_if(std::begin(_occupied_pools), std::end(_occupied_pools), [pool](const std::unique_ptr<IMemoryPool> &pool_it)
57 return pool_it.get() == pool;
59 ARM_COMPUTE_ERROR_ON_MSG(it == std::end(_occupied_pools), "Pool to be unlocked couldn't be found!");
60 _free_pools.splice(std::begin(_free_pools), _occupied_pools, it);
64 void PoolManager::register_pool(std::unique_ptr<IMemoryPool> pool)
66 std::lock_guard<arm_compute::Mutex> lock(_mtx);
67 ARM_COMPUTE_ERROR_ON_MSG(!_occupied_pools.empty(), "All pools should be free in order to register a new one!");
70 _free_pools.push_front(std::move(pool));
73 _sem = arm_compute::support::cpp14::make_unique<arm_compute::Semaphore>(_free_pools.size());
76 size_t PoolManager::num_pools() const
78 std::lock_guard<arm_compute::Mutex> lock(_mtx);
80 return _free_pools.size() + _occupied_pools.size();