src/alert.cpp

   1 /*
   2
   3 Copyright (c) 2003, Arvid Norberg, Daniel Wallin
   4 All rights reserved.
   5
   6 Redistribution and use in source and binary forms, with or without
   7 modification, are permitted provided that the following conditions
   8 are met:
   9
  10     * Redistributions of source code must retain the above copyright
  11       notice, this list of conditions and the following disclaimer.
  12     * Redistributions in binary form must reproduce the above copyright
  13       notice, this list of conditions and the following disclaimer in
  14       the documentation and/or other materials provided with the distribution.
  15     * Neither the name of the author nor the names of its
  16       contributors may be used to endorse or promote products derived
  17       from this software without specific prior written permission.
  18
  19 THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS "AS IS"
  20 AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
  21 IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
  22 ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT OWNER OR CONTRIBUTORS BE
  23 LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR
  24 CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF
  25 SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS
  26 INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN
  27 CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE)
  28 ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE
  29 POSSIBILITY OF SUCH DAMAGE.
  30
  31 */
  32
  33 #include "libtorrent/pch.hpp"
  34
  35 #include "libtorrent/alert.hpp"
  36
  37 namespace libtorrent {
  38
  39         alert::alert(severity_t severity, const std::string& msg)
  40                 : m_msg(msg)
  41                 , m_severity(severity)
  42                 , m_timestamp(time_now())
  43         {
  44         }
  45
  46         alert::~alert()
  47         {
  48         }
  49
  50         ptime alert::timestamp() const
  51         {
  52                 return m_timestamp;
  53         }
  54
  55         const std::string& alert::msg() const
  56         {
  57                 return m_msg;
  58         }
  59
  60         alert::severity_t alert::severity() const
  61         {
  62                 return m_severity;
  63         }
  64
  65
  66
  67         alert_manager::alert_manager()
  68                 : m_severity(alert::none)
  69         {}
  70
  71         alert_manager::~alert_manager()
  72         {
  73                 while (!m_alerts.empty())
  74                 {
  75                         delete m_alerts.front();
  76                         m_alerts.pop();
  77                 }
  78         }
  79
  80         void alert_manager::post_alert(const alert& alert_)
  81         {
  82                 boost::mutex::scoped_lock lock(m_mutex);
  83                 if (m_severity > alert_.severity()) return;
  84
  85                 // the internal limit is 100 alerts
  86                 if (m_alerts.size() == 100)
  87                 {
  88                         alert* result = m_alerts.front();
  89                         m_alerts.pop();
  90                         delete result;
  91                 }
  92                 m_alerts.push(alert_.clone().release());
  93         }
  94
  95         std::auto_ptr<alert> alert_manager::get()
  96         {
  97                 boost::mutex::scoped_lock lock(m_mutex);
  98
  99                 assert(!m_alerts.empty());
 100
 101                 alert* result = m_alerts.front();
 102                 m_alerts.pop();
 103                 return std::auto_ptr<alert>(result);
 104         }
 105
 106         bool alert_manager::pending() const
 107         {
 108                 boost::mutex::scoped_lock lock(m_mutex);
 109
 110                 return !m_alerts.empty();
 111         }
 112
 113         void alert_manager::set_severity(alert::severity_t severity)
 114         {
 115                 boost::mutex::scoped_lock lock(m_mutex);
 116
 117                 m_severity = severity;
 118         }
 119
 120         bool alert_manager::should_post(alert::severity_t severity) const
 121         {
 122                 return severity >= m_severity;
 123         }
 124
 125 } // namespace libtorrent
 126