From ed2199b91c2cc1b342bdd275d06035b6d6036756 Mon Sep 17 00:00:00 2001
From: Chocobo1 <Chocobo1@users.noreply.github.com>
Date: Wed, 3 Jul 2019 17:44:16 +0800
Subject: [PATCH] Add "File pool size" option

---
 src/base/bittorrent/session.cpp | 17 +++++++++++++++++
 src/base/bittorrent/session.h   |  3 +++
 src/gui/advancedsettings.cpp    | 10 ++++++++++
 src/gui/advancedsettings.h      |  3 ++-
 4 files changed, 32 insertions(+), 1 deletion(-)

diff --git a/src/base/bittorrent/session.cpp b/src/base/bittorrent/session.cpp
index 4b1c89356..b68a94eb4 100644
--- a/src/base/bittorrent/session.cpp
+++ b/src/base/bittorrent/session.cpp
@@ -268,6 +268,7 @@ Session::Session(QObject *parent)
     , m_announceToAllTrackers(BITTORRENT_SESSION_KEY("AnnounceToAllTrackers"), false)
     , m_announceToAllTiers(BITTORRENT_SESSION_KEY("AnnounceToAllTiers"), true)
     , m_asyncIOThreads(BITTORRENT_SESSION_KEY("AsyncIOThreadsCount"), 4)
+    , m_filePoolSize(BITTORRENT_SESSION_KEY("FilePoolSize"), 40)
     , m_checkingMemUsage(BITTORRENT_SESSION_KEY("CheckingMemUsageSize"), 16)
     , m_diskCacheSize(BITTORRENT_SESSION_KEY("DiskCacheSize"), 64)
     , m_diskCacheTTL(BITTORRENT_SESSION_KEY("DiskCacheTTL"), 60)
@@ -1255,6 +1256,8 @@ void Session::configure(lt::settings_pack &settingsPack)
 
     settingsPack.set_int(lt::settings_pack::aio_threads, asyncIOThreads());
 
+    settingsPack.set_int(lt::settings_pack::file_pool_size, filePoolSize());
+
     const int checkingMemUsageSize = checkingMemUsage() * 64;
     settingsPack.set_int(lt::settings_pack::checking_mem_usage, checkingMemUsageSize);
 
@@ -2814,6 +2817,20 @@ void Session::setAsyncIOThreads(const int num)
     configureDeferred();
 }
 
+int Session::filePoolSize() const
+{
+    return m_filePoolSize;
+}
+
+void Session::setFilePoolSize(const int size)
+{
+    if (size == m_filePoolSize)
+        return;
+
+    m_filePoolSize = size;
+    configureDeferred();
+}
+
 int Session::checkingMemUsage() const
 {
     return qMax(1, m_checkingMemUsage.value());
diff --git a/src/base/bittorrent/session.h b/src/base/bittorrent/session.h
index 10b2b79f3..1474a6161 100644
--- a/src/base/bittorrent/session.h
+++ b/src/base/bittorrent/session.h
@@ -320,6 +320,8 @@ namespace BitTorrent
         void setAnnounceToAllTiers(bool val);
         int asyncIOThreads() const;
         void setAsyncIOThreads(int num);
+        int filePoolSize() const;
+        void setFilePoolSize(int size);
         int checkingMemUsage() const;
         void setCheckingMemUsage(int size);
         int diskCacheSize() const;
@@ -587,6 +589,7 @@ namespace BitTorrent
         CachedSettingValue<bool> m_announceToAllTrackers;
         CachedSettingValue<bool> m_announceToAllTiers;
         CachedSettingValue<int> m_asyncIOThreads;
+        CachedSettingValue<int> m_filePoolSize;
         CachedSettingValue<int> m_checkingMemUsage;
         CachedSettingValue<int> m_diskCacheSize;
         CachedSettingValue<int> m_diskCacheTTL;
diff --git a/src/gui/advancedsettings.cpp b/src/gui/advancedsettings.cpp
index d418e381e..62fbec101 100644
--- a/src/gui/advancedsettings.cpp
+++ b/src/gui/advancedsettings.cpp
@@ -89,6 +89,7 @@ enum AdvSettingsRows
     // libtorrent section
     LIBTORRENT_HEADER,
     ASYNC_IO_THREADS,
+    FILE_POOL_SIZE,
     CHECKING_MEM_USAGE,
     // cache
     DISK_CACHE,
@@ -155,6 +156,8 @@ void AdvancedSettings::saveAdvancedSettings()
 
     // Async IO threads
     session->setAsyncIOThreads(spinBoxAsyncIOThreads.value());
+    // File pool size
+    session->setFilePoolSize(spinBoxFilePoolSize.value());
     // Checking Memory Usage
     session->setCheckingMemUsage(spinBoxCheckingMemUsage.value());
     // Disk write cache
@@ -328,6 +331,13 @@ void AdvancedSettings::loadAdvancedSettings()
     addRow(ASYNC_IO_THREADS, (tr("Asynchronous I/O threads") + ' ' + makeLink("https://www.libtorrent.org/reference-Settings.html#aio_threads", "(?)"))
             , &spinBoxAsyncIOThreads);
 
+    // File pool size
+    spinBoxFilePoolSize.setMinimum(1);
+    spinBoxFilePoolSize.setMaximum(std::numeric_limits<int>::max());
+    spinBoxFilePoolSize.setValue(session->filePoolSize());
+    addRow(FILE_POOL_SIZE, (tr("File pool size") + ' ' + makeLink("https://www.libtorrent.org/reference-Settings.html#file_pool_size", "(?)"))
+        , &spinBoxFilePoolSize);
+
     // Checking Memory Usage
     spinBoxCheckingMemUsage.setMinimum(1);
     // When build as 32bit binary, set the maximum value lower to prevent crashes.
diff --git a/src/gui/advancedsettings.h b/src/gui/advancedsettings.h
index 576a6b922..ebd057d7d 100644
--- a/src/gui/advancedsettings.h
+++ b/src/gui/advancedsettings.h
@@ -59,7 +59,8 @@ private:
     template <typename T> void addRow(int row, const QString &text, T *widget);
 
     QLabel labelQbtLink, labelLibtorrentLink;
-    QSpinBox spinBoxAsyncIOThreads, spinBoxCheckingMemUsage, spinBoxCache, spinBoxSaveResumeDataInterval, spinBoxOutgoingPortsMin, spinBoxOutgoingPortsMax, spinBoxListRefresh,
+    QSpinBox spinBoxAsyncIOThreads, spinBoxFilePoolSize, spinBoxCheckingMemUsage, spinBoxCache,
+             spinBoxSaveResumeDataInterval, spinBoxOutgoingPortsMin, spinBoxOutgoingPortsMax, spinBoxListRefresh,
              spinBoxTrackerPort, spinBoxCacheTTL, spinBoxSendBufferWatermark, spinBoxSendBufferLowWatermark,
              spinBoxSendBufferWatermarkFactor, spinBoxSocketBacklogSize, spinBoxSavePathHistoryLength;
     QCheckBox checkBoxOsCache, checkBoxRecheckCompleted, checkBoxResolveCountries, checkBoxResolveHosts, checkBoxSuperSeeding,