use *CACHE constants from bitcoin core

bitcoin/bitcoin#31483

Author: pinheadmz

qml/models/options_model.cpp

@@ -8,6 +8,7 @@
 #include <common/settings.h>
 #include <common/system.h>
 #include <interfaces/node.h>
+#include <node/caches.h>
 #include <mapport.h>
 #include <qt/guiconstants.h>
 #include <qt/guiutil.h>
@@ -28,7 +29,7 @@ OptionsQmlModel::OptionsQmlModel(interfaces::Node& node, bool is_onboarded)
     : m_node{node}
     , m_onboarded{is_onboarded}
 {
-    m_dbcache_size_mib = SettingToInt(m_node.getPersistentSetting("dbcache"), nDefaultDbCache);
+    m_dbcache_size_mib = SettingToInt(m_node.getPersistentSetting("dbcache"), DEFAULT_DB_CACHE >> 20);
 
     m_listen = SettingToBool(m_node.getPersistentSetting("listen"), DEFAULT_LISTEN);
 
@@ -204,7 +205,7 @@ void OptionsQmlModel::setDataDir(QString new_data_dir)
 void OptionsQmlModel::onboard()
 {
     m_node.resetSettings();
-    if (m_dbcache_size_mib != nDefaultDbCache) {
+    if (m_dbcache_size_mib != DEFAULT_DB_CACHE >> 20) {
         m_node.updateRwSetting("dbcache", m_dbcache_size_mib);
     }
     if (m_listen) {

qml/models/options_model.h

@@ -7,6 +7,8 @@
 
 #include <txdb.h>
 #include <common/settings.h>
+#include <node/caches.h>
+#include <kernel/caches.h>
 #include <common/system.h>
 #include <validation.h>
 
@@ -92,8 +94,8 @@ public Q_SLOTS:
 
     // Properties that are exposed to QML.
     int m_dbcache_size_mib;
-    const int m_min_dbcache_size_mib{nMinDbCache};
-    const int m_max_dbcache_size_mib{nMaxDbCache};
+    const int m_min_dbcache_size_mib{MIN_DB_CACHE >> 20};
+    const int m_max_dbcache_size_mib{MAX_COINS_DB_CACHE >> 20};
     bool m_listen;
     const int m_max_script_threads{MAX_SCRIPTCHECK_THREADS};
     const int m_min_script_threads{-GetNumCores()};