annotate base/ById.cpp @ 1886:f803d3c33f76 tip

Switch off copious debug in soft synth driving
author Chris Cannam
date Fri, 14 Aug 2020 10:44:44 +0100
parents 871a2050236b
children
rev   line source
Chris@1742 1 /* -*- c-basic-offset: 4 indent-tabs-mode: nil -*- vi:set ts=8 sts=4 sw=4: */
Chris@1742 2
Chris@1742 3 /*
Chris@1742 4 Sonic Visualiser
Chris@1742 5 An audio file viewer and annotation editor.
Chris@1742 6 Centre for Digital Music, Queen Mary, University of London.
Chris@1742 7
Chris@1742 8 This program is free software; you can redistribute it and/or
Chris@1742 9 modify it under the terms of the GNU General Public License as
Chris@1742 10 published by the Free Software Foundation; either version 2 of the
Chris@1742 11 License, or (at your option) any later version. See the file
Chris@1742 12 COPYING included with this distribution for more information.
Chris@1742 13 */
Chris@1742 14
Chris@1742 15 #include "ById.h"
Chris@1742 16
Chris@1742 17 #include <unordered_map>
Chris@1742 18 #include <typeinfo>
Chris@1742 19
Chris@1768 20 //#define DEBUG_BY_ID 1
Chris@1768 21
Chris@1742 22 int IdAlloc::getNextId()
Chris@1742 23 {
Chris@1742 24 static int nextId = 0;
Chris@1742 25 static QMutex mutex;
Chris@1742 26 QMutexLocker locker(&mutex);
Chris@1742 27 int i = nextId;
Chris@1742 28 if (nextId == INT_MAX) {
Chris@1742 29 nextId = INT_MIN;
Chris@1742 30 } else {
Chris@1742 31 ++nextId;
Chris@1742 32 if (nextId == 0 || nextId == NO_ID) {
Chris@1742 33 throw std::runtime_error("Internal ID limit exceeded!");
Chris@1742 34 }
Chris@1742 35 }
Chris@1742 36 return i;
Chris@1742 37 }
Chris@1742 38
Chris@1806 39 // "warning: expression with side effects will be evaluated despite
Chris@1806 40 // being used as an operand to 'typeid'"
Chris@1808 41 #ifdef __clang__
Chris@1807 42 #pragma clang diagnostic ignored "-Wpotentially-evaluated-expression"
Chris@1808 43 #endif
Chris@1806 44
Chris@1742 45 class AnyById::Impl
Chris@1742 46 {
Chris@1742 47 public:
Chris@1742 48 ~Impl() {
Chris@1742 49 QMutexLocker locker(&m_mutex);
Chris@1742 50 bool empty = true;
Chris@1742 51 for (const auto &p: m_items) {
Chris@1742 52 if (p.second && p.second.use_count() > 0) {
Chris@1742 53 empty = false;
Chris@1742 54 break;
Chris@1742 55 }
Chris@1742 56 }
Chris@1742 57 if (!empty) {
Chris@1742 58 SVCERR << "WARNING: ById map is not empty at close; some items have not been released" << endl;
Chris@1742 59 SVCERR << " Unreleased items are:" << endl;
Chris@1742 60 for (const auto &p: m_items) {
Chris@1759 61 auto ptr = p.second;
Chris@1759 62 if (ptr && ptr.use_count() > 0) {
Chris@1759 63 QString message = QString("id #%1: type %2")
Chris@1759 64 .arg(p.first).arg(typeid(*ptr.get()).name());
Chris@1759 65 if (auto qobj = std::dynamic_pointer_cast<QObject>(ptr)) {
Chris@1759 66 message += QString(", object name \"%1\"")
Chris@1759 67 .arg(qobj->objectName());
Chris@1759 68 }
Chris@1759 69 message += QString(", use count %1").arg(ptr.use_count());
Chris@1759 70 SVCERR << " - " << message << endl;
Chris@1742 71 }
Chris@1742 72 }
Chris@1742 73 }
Chris@1742 74 }
Chris@1742 75
Chris@1752 76 int add(std::shared_ptr<WithId> item) {
Chris@1752 77 int id = item->getUntypedId();
Chris@1744 78 if (id == IdAlloc::NO_ID) {
Chris@1752 79 throw std::logic_error("item id should never be NO_ID");
Chris@1744 80 }
Chris@1768 81 #ifdef DEBUG_BY_ID
Chris@1761 82 SVCERR << "ById::add(#" << id << ") of type "
Chris@1761 83 << typeid(*item.get()).name() << endl;
Chris@1768 84 #endif
Chris@1742 85 QMutexLocker locker(&m_mutex);
Chris@1742 86 if (m_items.find(id) != m_items.end()) {
Chris@1742 87 SVCERR << "ById::add: item with id " << id
Chris@1742 88 << " is already recorded (existing item type is "
Chris@1742 89 << typeid(*m_items.find(id)->second.get()).name()
Chris@1742 90 << ", proposed is "
Chris@1742 91 << typeid(*item.get()).name() << ")" << endl;
Chris@1742 92 throw std::logic_error("item id is already recorded in add");
Chris@1742 93 }
Chris@1742 94 m_items[id] = item;
Chris@1752 95 return id;
Chris@1742 96 }
Chris@1742 97
Chris@1742 98 void release(int id) {
Chris@1744 99 if (id == IdAlloc::NO_ID) {
Chris@1744 100 return;
Chris@1744 101 }
Chris@1768 102 #ifdef DEBUG_BY_ID
Chris@1761 103 SVCERR << "ById::release(#" << id << ")" << endl;
Chris@1768 104 #endif
Chris@1742 105 QMutexLocker locker(&m_mutex);
Chris@1742 106 if (m_items.find(id) == m_items.end()) {
Chris@1742 107 SVCERR << "ById::release: unknown item id " << id << endl;
Chris@1742 108 throw std::logic_error("unknown item id in release");
Chris@1742 109 }
Chris@1742 110 m_items.erase(id);
Chris@1742 111 }
Chris@1742 112
Chris@1742 113 std::shared_ptr<WithId> get(int id) const {
Chris@1744 114 if (id == IdAlloc::NO_ID) {
Chris@1744 115 return {}; // this id cannot be added: avoid locking
Chris@1744 116 }
Chris@1742 117 QMutexLocker locker(&m_mutex);
Chris@1742 118 const auto &itr = m_items.find(id);
Chris@1742 119 if (itr != m_items.end()) {
Chris@1742 120 return itr->second;
Chris@1742 121 } else {
Chris@1742 122 return {};
Chris@1742 123 }
Chris@1742 124 }
Chris@1742 125
Chris@1742 126 private:
Chris@1742 127 mutable QMutex m_mutex;
Chris@1742 128 std::unordered_map<int, std::shared_ptr<WithId>> m_items;
Chris@1742 129 };
Chris@1742 130
Chris@1752 131 int
Chris@1752 132 AnyById::add(std::shared_ptr<WithId> item)
Chris@1742 133 {
Chris@1752 134 return impl().add(item);
Chris@1742 135 }
Chris@1742 136
Chris@1742 137 void
Chris@1742 138 AnyById::release(int id)
Chris@1742 139 {
Chris@1742 140 impl().release(id);
Chris@1742 141 }
Chris@1742 142
Chris@1742 143 std::shared_ptr<WithId>
Chris@1742 144 AnyById::get(int id)
Chris@1742 145 {
Chris@1742 146 return impl().get(id);
Chris@1742 147 }
Chris@1742 148
Chris@1742 149 AnyById::Impl &
Chris@1742 150 AnyById::impl()
Chris@1742 151 {
Chris@1742 152 static Impl impl;
Chris@1742 153 return impl;
Chris@1742 154 }