111 lines
3.3 KiB
C++
111 lines
3.3 KiB
C++
/*
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Copyright (c) 2012-2013, Arvid Norberg
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All rights reserved.
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Redistribution and use in source and binary forms, with or without
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modification, are permitted provided that the following conditions
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are met:
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* Redistributions of source code must retain the above copyright
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notice, this list of conditions and the following disclaimer.
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* Redistributions in binary form must reproduce the above copyright
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notice, this list of conditions and the following disclaimer in
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the documentation and/or other materials provided with the distribution.
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* Neither the name of the author nor the names of its
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contributors may be used to endorse or promote products derived
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from this software without specific prior written permission.
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THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS "AS IS"
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AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
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IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
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ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT OWNER OR CONTRIBUTORS BE
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LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR
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CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF
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SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS
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INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN
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CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE)
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ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE
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POSSIBILITY OF SUCH DAMAGE.
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*/
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#include "libtorrent/disk_job_pool.hpp"
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#include "libtorrent/disk_io_job.hpp"
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namespace libtorrent
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{
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disk_job_pool::disk_job_pool()
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: m_jobs_in_use(0)
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, m_read_jobs(0)
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, m_write_jobs(0)
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, m_job_pool(sizeof(disk_io_job))
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{}
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disk_job_pool::~disk_job_pool()
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{
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// #error this should be fixed!
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// TORRENT_ASSERT(m_jobs_in_use == 0);
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}
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disk_io_job* disk_job_pool::allocate_job(int type)
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{
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mutex::scoped_lock l(m_job_mutex);
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disk_io_job* ptr = (disk_io_job*)m_job_pool.malloc();
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m_job_pool.set_next_size(100);
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if (ptr == 0) return 0;
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++m_jobs_in_use;
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if (type == disk_io_job::read) ++m_read_jobs;
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else if (type == disk_io_job::write) ++m_write_jobs;
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l.unlock();
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TORRENT_ASSERT(ptr);
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new (ptr) disk_io_job;
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ptr->action = (disk_io_job::action_t)type;
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#if defined TORRENT_DEBUG || TORRENT_RELEASE_ASSERTS
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ptr->in_use = true;
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#endif
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return ptr;
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}
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void disk_job_pool::free_job(disk_io_job* j)
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{
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TORRENT_ASSERT(j);
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if (j == 0) return;
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#if defined TORRENT_DEBUG || TORRENT_RELEASE_ASSERTS
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TORRENT_ASSERT(j->in_use);
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j->in_use = false;
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#endif
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int type = j->action;
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j->~disk_io_job();
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mutex::scoped_lock l(m_job_mutex);
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if (type == disk_io_job::read) --m_read_jobs;
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else if (type == disk_io_job::write) --m_write_jobs;
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--m_jobs_in_use;
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m_job_pool.free(j);
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}
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void disk_job_pool::free_jobs(disk_io_job** j, int num)
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{
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if (num == 0) return;
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int read_jobs = 0;
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int write_jobs = 0;
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for (int i = 0; i < num; ++i)
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{
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int type = j[i]->action;
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j[i]->~disk_io_job();
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if (type == disk_io_job::read) ++read_jobs;
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else if (type == disk_io_job::write) ++write_jobs;
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}
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mutex::scoped_lock l(m_job_mutex);
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m_read_jobs -= read_jobs;
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m_write_jobs -= write_jobs;
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m_jobs_in_use -= num;
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for (int i = 0; i < num; ++i)
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m_job_pool.free(j[i]);
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}
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}
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