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<!DOCTYPE html>
<html lang="en">
<head>
<meta name="generator" content=
"HTML Tidy for HTML5 for Linux version 5.7.16">
<meta charset="utf-8">
<title>Tutorial: Memory Management - Synthesizer V Studio Scripting
Manual</title>
<script src="scripts/prettify/prettify.js"></script>
<script src="scripts/prettify/lang-css.js"></script>
<!--[if lt IE 9]>
<script src="//html5shiv.googlecode.com/svn/trunk/html5.js"></script>
<![endif]-->
<link type="text/css" rel="stylesheet" href="styles/prettify.css">
<link type="text/css" rel="stylesheet" href="styles/jsdoc.css">
<script src="scripts/nav.js" defer></script>
<meta name="viewport" content=
"width=device-width, initial-scale=1.0">
</head>
<body>
<input type="checkbox" id="nav-trigger" class="nav-trigger">
<div class="navicon"></div>
<nav><input type="text" id="nav-search" placeholder="Search">
<h2><a href="index.html">Home</a></h2>
<h2><a href="https://github.com/Dreamtonics/svstudio-scripts"
target="_blank" class="menu-item" id="scripts_repo">Scripts
Repository</a></h2>
<h2><a href="https://dreamtonics.com/synthesizerv" target="_blank"
class="menu-item" id="svstudio_site">Synthesizer V Studio
Website</a></h2>
<h3>Tutorials</h3>
<ul>
<li><a href="tutorial-A%20Minimal%20Example.html">A Minimal
Example</a></li>
<li><a href="tutorial-Custom%20Dialogs.html">Custom
Dialogs</a></li>
<li><a href="tutorial-Localization.html">Localization</a></li>
<li><a href="tutorial-Memory%20Management.html">Memory
Management</a></li>
</ul>
<h3>Classes</h3>
<ul>
<li><a href=
"ArrangementSelectionState.html">ArrangementSelectionState</a>
<ul class='methods'>
<li data-type='method' style='display: none;'><a href=
"ArrangementSelectionState.html#clearAll">clearAll</a></li>
<li data-type='method' style='display: none;'><a href=
"ArrangementSelectionState.html#clearGroups">clearGroups</a></li>
<li data-type='method' style='display: none;'><a href=
"ArrangementSelectionState.html#getIndexInParent">getIndexInParent</a></li>
<li data-type='method' style='display: none;'><a href=
"ArrangementSelectionState.html#getParent">getParent</a></li>
<li data-type='method' style='display: none;'><a href=
"ArrangementSelectionState.html#getSelectedGroups">getSelectedGroups</a></li>
<li data-type='method' style='display: none;'><a href=
"ArrangementSelectionState.html#hasSelectedContent">hasSelectedContent</a></li>
<li data-type='method' style='display: none;'><a href=
"ArrangementSelectionState.html#hasSelectedGroups">hasSelectedGroups</a></li>
<li data-type='method' style='display: none;'><a href=
"ArrangementSelectionState.html#hasUnfinishedEdits">hasUnfinishedEdits</a></li>
<li data-type='method' style='display: none;'><a href=
"ArrangementSelectionState.html#isMemoryManaged">isMemoryManaged</a></li>
<li data-type='method' style='display: none;'><a href=
"ArrangementSelectionState.html#selectGroup">selectGroup</a></li>
<li data-type='method' style='display: none;'><a href=
"ArrangementSelectionState.html#unselectGroup">unselectGroup</a></li>
</ul>
</li>
<li><a href="ArrangementView.html">ArrangementView</a>
<ul class='methods'>
<li data-type='method' style='display: none;'><a href=
"ArrangementView.html#getIndexInParent">getIndexInParent</a></li>
<li data-type='method' style='display: none;'><a href=
"ArrangementView.html#getNavigation">getNavigation</a></li>
<li data-type='method' style='display: none;'><a href=
"ArrangementView.html#getParent">getParent</a></li>
<li data-type='method' style='display: none;'><a href=
"ArrangementView.html#getSelection">getSelection</a></li>
<li data-type='method' style='display: none;'><a href=
"ArrangementView.html#isMemoryManaged">isMemoryManaged</a></li>
</ul>
</li>
<li><a href="Automation.html">Automation</a>
<ul class='methods'>
<li data-type='method' style='display: none;'><a href=
"Automation.html#add">add</a></li>
<li data-type='method' style='display: none;'><a href=
"Automation.html#clone">clone</a></li>
<li data-type='method' style='display: none;'><a href=
"Automation.html#get">get</a></li>
<li data-type='method' style='display: none;'><a href=
"Automation.html#getAllPoints">getAllPoints</a></li>
<li data-type='method' style='display: none;'><a href=
"Automation.html#getDefinition">getDefinition</a></li>
<li data-type='method' style='display: none;'><a href=
"Automation.html#getIndexInParent">getIndexInParent</a></li>
<li data-type='method' style='display: none;'><a href=
"Automation.html#getInterpolationMethod">getInterpolationMethod</a></li>
<li data-type='method' style='display: none;'><a href=
"Automation.html#getLinear">getLinear</a></li>
<li data-type='method' style='display: none;'><a href=
"Automation.html#getParent">getParent</a></li>
<li data-type='method' style='display: none;'><a href=
"Automation.html#getPoints">getPoints</a></li>
<li data-type='method' style='display: none;'><a href=
"Automation.html#getType">getType</a></li>
<li data-type='method' style='display: none;'><a href=
"Automation.html#isMemoryManaged">isMemoryManaged</a></li>
<li data-type='method' style='display: none;'><a href=
"Automation.html#remove">remove</a></li>
<li data-type='method' style='display: none;'><a href=
"Automation.html#remove">remove</a></li>
<li data-type='method' style='display: none;'><a href=
"Automation.html#removeAll">removeAll</a></li>
<li data-type='method' style='display: none;'><a href=
"Automation.html#simplify">simplify</a></li>
</ul>
</li>
<li><a href="CoordinateSystem.html">CoordinateSystem</a>
<ul class='methods'>
<li data-type='method' style='display: none;'><a href=
"CoordinateSystem.html#getIndexInParent">getIndexInParent</a></li>
<li data-type='method' style='display: none;'><a href=
"CoordinateSystem.html#getParent">getParent</a></li>
<li data-type='method' style='display: none;'><a href=
"CoordinateSystem.html#getTimePxPerUnit">getTimePxPerUnit</a></li>
<li data-type='method' style='display: none;'><a href=
"CoordinateSystem.html#getTimeViewRange">getTimeViewRange</a></li>
<li data-type='method' style='display: none;'><a href=
"CoordinateSystem.html#getValuePxPerUnit">getValuePxPerUnit</a></li>
<li data-type='method' style='display: none;'><a href=
"CoordinateSystem.html#getValueViewRange">getValueViewRange</a></li>
<li data-type='method' style='display: none;'><a href=
"CoordinateSystem.html#isMemoryManaged">isMemoryManaged</a></li>
<li data-type='method' style='display: none;'><a href=
"CoordinateSystem.html#setTimeLeft">setTimeLeft</a></li>
<li data-type='method' style='display: none;'><a href=
"CoordinateSystem.html#setTimeRight">setTimeRight</a></li>
<li data-type='method' style='display: none;'><a href=
"CoordinateSystem.html#setTimeScale">setTimeScale</a></li>
<li data-type='method' style='display: none;'><a href=
"CoordinateSystem.html#setValueCenter">setValueCenter</a></li>
<li data-type='method' style='display: none;'><a href=
"CoordinateSystem.html#snap">snap</a></li>
<li data-type='method' style='display: none;'><a href=
"CoordinateSystem.html#t2x">t2x</a></li>
<li data-type='method' style='display: none;'><a href=
"CoordinateSystem.html#v2y">v2y</a></li>
<li data-type='method' style='display: none;'><a href=
"CoordinateSystem.html#x2t">x2t</a></li>
<li data-type='method' style='display: none;'><a href=
"CoordinateSystem.html#y2v">y2v</a></li>
</ul>
</li>
<li><a href="GroupSelection.html">GroupSelection</a>
<ul class='methods'>
<li data-type='method' style='display: none;'><a href=
"GroupSelection.html#clearGroups">clearGroups</a></li>
<li data-type='method' style='display: none;'><a href=
"GroupSelection.html#getSelectedGroups">getSelectedGroups</a></li>
<li data-type='method' style='display: none;'><a href=
"GroupSelection.html#hasSelectedGroups">hasSelectedGroups</a></li>
<li data-type='method' style='display: none;'><a href=
"GroupSelection.html#selectGroup">selectGroup</a></li>
<li data-type='method' style='display: none;'><a href=
"GroupSelection.html#unselectGroup">unselectGroup</a></li>
</ul>
</li>
<li><a href="MainEditorView.html">MainEditorView</a>
<ul class='methods'>
<li data-type='method' style='display: none;'><a href=
"MainEditorView.html#getCurrentGroup">getCurrentGroup</a></li>
<li data-type='method' style='display: none;'><a href=
"MainEditorView.html#getCurrentTrack">getCurrentTrack</a></li>
<li data-type='method' style='display: none;'><a href=
"MainEditorView.html#getIndexInParent">getIndexInParent</a></li>
<li data-type='method' style='display: none;'><a href=
"MainEditorView.html#getNavigation">getNavigation</a></li>
<li data-type='method' style='display: none;'><a href=
"MainEditorView.html#getParent">getParent</a></li>
<li data-type='method' style='display: none;'><a href=
"MainEditorView.html#getSelection">getSelection</a></li>
<li data-type='method' style='display: none;'><a href=
"MainEditorView.html#isMemoryManaged">isMemoryManaged</a></li>
</ul>
</li>
<li><a href="NestedObject.html">NestedObject</a>
<ul class='methods'>
<li data-type='method' style='display: none;'><a href=
"NestedObject.html#getIndexInParent">getIndexInParent</a></li>
<li data-type='method' style='display: none;'><a href=
"NestedObject.html#getParent">getParent</a></li>
<li data-type='method' style='display: none;'><a href=
"NestedObject.html#isMemoryManaged">isMemoryManaged</a></li>
</ul>
</li>
<li><a href="Note.html">Note</a>
<ul class='methods'>
<li data-type='method' style='display: none;'><a href=
"Note.html#clone">clone</a></li>
<li data-type='method' style='display: none;'><a href=
"Note.html#getAttributes">getAttributes</a></li>
<li data-type='method' style='display: none;'><a href=
"Note.html#getDuration">getDuration</a></li>
<li data-type='method' style='display: none;'><a href=
"Note.html#getEnd">getEnd</a></li>
<li data-type='method' style='display: none;'><a href=
"Note.html#getIndexInParent">getIndexInParent</a></li>
<li data-type='method' style='display: none;'><a href=
"Note.html#getLyrics">getLyrics</a></li>
<li data-type='method' style='display: none;'><a href=
"Note.html#getOnset">getOnset</a></li>
<li data-type='method' style='display: none;'><a href=
"Note.html#getParent">getParent</a></li>
<li data-type='method' style='display: none;'><a href=
"Note.html#getPhonemes">getPhonemes</a></li>
<li data-type='method' style='display: none;'><a href=
"Note.html#getPitch">getPitch</a></li>
<li data-type='method' style='display: none;'><a href=
"Note.html#isMemoryManaged">isMemoryManaged</a></li>
<li data-type='method' style='display: none;'><a href=
"Note.html#setAttributes">setAttributes</a></li>
<li data-type='method' style='display: none;'><a href=
"Note.html#setDuration">setDuration</a></li>
<li data-type='method' style='display: none;'><a href=
"Note.html#setLyrics">setLyrics</a></li>
<li data-type='method' style='display: none;'><a href=
"Note.html#setOnset">setOnset</a></li>
<li data-type='method' style='display: none;'><a href=
"Note.html#setPhonemes">setPhonemes</a></li>
<li data-type='method' style='display: none;'><a href=
"Note.html#setPitch">setPitch</a></li>
<li data-type='method' style='display: none;'><a href=
"Note.html#setTimeRange">setTimeRange</a></li>
</ul>
</li>
<li><a href="NoteGroup.html">NoteGroup</a>
<ul class='methods'>
<li data-type='method' style='display: none;'><a href=
"NoteGroup.html#addNote">addNote</a></li>
<li data-type='method' style='display: none;'><a href=
"NoteGroup.html#clone">clone</a></li>
<li data-type='method' style='display: none;'><a href=
"NoteGroup.html#getIndexInParent">getIndexInParent</a></li>
<li data-type='method' style='display: none;'><a href=
"NoteGroup.html#getName">getName</a></li>
<li data-type='method' style='display: none;'><a href=
"NoteGroup.html#getNote">getNote</a></li>
<li data-type='method' style='display: none;'><a href=
"NoteGroup.html#getNumNotes">getNumNotes</a></li>
<li data-type='method' style='display: none;'><a href=
"NoteGroup.html#getParameter">getParameter</a></li>
<li data-type='method' style='display: none;'><a href=
"NoteGroup.html#getParent">getParent</a></li>
<li data-type='method' style='display: none;'><a href=
"NoteGroup.html#getUUID">getUUID</a></li>
<li data-type='method' style='display: none;'><a href=
"NoteGroup.html#isMemoryManaged">isMemoryManaged</a></li>
<li data-type='method' style='display: none;'><a href=
"NoteGroup.html#removeNote">removeNote</a></li>
<li data-type='method' style='display: none;'><a href=
"NoteGroup.html#setName">setName</a></li>
</ul>
</li>
<li><a href="NoteGroupReference.html">NoteGroupReference</a>
<ul class='methods'>
<li data-type='method' style='display: none;'><a href=
"NoteGroupReference.html#clone">clone</a></li>
<li data-type='method' style='display: none;'><a href=
"NoteGroupReference.html#getDuration">getDuration</a></li>
<li data-type='method' style='display: none;'><a href=
"NoteGroupReference.html#getEnd">getEnd</a></li>
<li data-type='method' style='display: none;'><a href=
"NoteGroupReference.html#getIndexInParent">getIndexInParent</a></li>
<li data-type='method' style='display: none;'><a href=
"NoteGroupReference.html#getOnset">getOnset</a></li>
<li data-type='method' style='display: none;'><a href=
"NoteGroupReference.html#getParent">getParent</a></li>
<li data-type='method' style='display: none;'><a href=
"NoteGroupReference.html#getPitchOffset">getPitchOffset</a></li>
<li data-type='method' style='display: none;'><a href=
"NoteGroupReference.html#getTarget">getTarget</a></li>
<li data-type='method' style='display: none;'><a href=
"NoteGroupReference.html#getTimeOffset">getTimeOffset</a></li>
<li data-type='method' style='display: none;'><a href=
"NoteGroupReference.html#getVoice">getVoice</a></li>
<li data-type='method' style='display: none;'><a href=
"NoteGroupReference.html#isInstrumental">isInstrumental</a></li>
<li data-type='method' style='display: none;'><a href=
"NoteGroupReference.html#isMain">isMain</a></li>
<li data-type='method' style='display: none;'><a href=
"NoteGroupReference.html#isMemoryManaged">isMemoryManaged</a></li>
<li data-type='method' style='display: none;'><a href=
"NoteGroupReference.html#setPitchOffset">setPitchOffset</a></li>
<li data-type='method' style='display: none;'><a href=
"NoteGroupReference.html#setTarget">setTarget</a></li>
<li data-type='method' style='display: none;'><a href=
"NoteGroupReference.html#setTimeOffset">setTimeOffset</a></li>
<li data-type='method' style='display: none;'><a href=
"NoteGroupReference.html#setVoice">setVoice</a></li>
</ul>
</li>
<li><a href="PlaybackControl.html">PlaybackControl</a>
<ul class='methods'>
<li data-type='method' style='display: none;'><a href=
"PlaybackControl.html#getIndexInParent">getIndexInParent</a></li>
<li data-type='method' style='display: none;'><a href=
"PlaybackControl.html#getParent">getParent</a></li>
<li data-type='method' style='display: none;'><a href=
"PlaybackControl.html#getPlayhead">getPlayhead</a></li>
<li data-type='method' style='display: none;'><a href=
"PlaybackControl.html#getStatus">getStatus</a></li>
<li data-type='method' style='display: none;'><a href=
"PlaybackControl.html#isMemoryManaged">isMemoryManaged</a></li>
<li data-type='method' style='display: none;'><a href=
"PlaybackControl.html#loop">loop</a></li>
<li data-type='method' style='display: none;'><a href=
"PlaybackControl.html#pause">pause</a></li>
<li data-type='method' style='display: none;'><a href=
"PlaybackControl.html#play">play</a></li>
<li data-type='method' style='display: none;'><a href=
"PlaybackControl.html#seek">seek</a></li>
<li data-type='method' style='display: none;'><a href=
"PlaybackControl.html#stop">stop</a></li>
</ul>
</li>
<li><a href="Project.html">Project</a>
<ul class='methods'>
<li data-type='method' style='display: none;'><a href=
"Project.html#addNoteGroup">addNoteGroup</a></li>
<li data-type='method' style='display: none;'><a href=
"Project.html#addTrack">addTrack</a></li>
<li data-type='method' style='display: none;'><a href=
"Project.html#getDuration">getDuration</a></li>
<li data-type='method' style='display: none;'><a href=
"Project.html#getFileName">getFileName</a></li>
<li data-type='method' style='display: none;'><a href=
"Project.html#getIndexInParent">getIndexInParent</a></li>
<li data-type='method' style='display: none;'><a href=
"Project.html#getNoteGroup">getNoteGroup</a></li>
<li data-type='method' style='display: none;'><a href=
"Project.html#getNumNoteGroupsInLibrary">getNumNoteGroupsInLibrary</a></li>
<li data-type='method' style='display: none;'><a href=
"Project.html#getNumTracks">getNumTracks</a></li>
<li data-type='method' style='display: none;'><a href=
"Project.html#getParent">getParent</a></li>
<li data-type='method' style='display: none;'><a href=
"Project.html#getTimeAxis">getTimeAxis</a></li>
<li data-type='method' style='display: none;'><a href=
"Project.html#getTrack">getTrack</a></li>
<li data-type='method' style='display: none;'><a href=
"Project.html#isMemoryManaged">isMemoryManaged</a></li>
<li data-type='method' style='display: none;'><a href=
"Project.html#newUndoRecord">newUndoRecord</a></li>
<li data-type='method' style='display: none;'><a href=
"Project.html#removeNoteGroup">removeNoteGroup</a></li>
<li data-type='method' style='display: none;'><a href=
"Project.html#removeTrack">removeTrack</a></li>
</ul>
</li>
<li><a href="SelectionStateBase.html">SelectionStateBase</a>
<ul class='methods'>
<li data-type='method' style='display: none;'><a href=
"SelectionStateBase.html#clearAll">clearAll</a></li>
<li data-type='method' style='display: none;'><a href=
"SelectionStateBase.html#hasSelectedContent">hasSelectedContent</a></li>
<li data-type='method' style='display: none;'><a href=
"SelectionStateBase.html#hasUnfinishedEdits">hasUnfinishedEdits</a></li>
</ul>
</li>
<li><a href="SV.html">SV</a>
<ul class='methods'>
<li data-type='method' style='display: none;'><a href=
"SV.html#blackKey">blackKey</a></li>
<li data-type='method' style='display: none;'><a href=
"SV.html#blick2Quarter">blick2Quarter</a></li>
<li data-type='method' style='display: none;'><a href=
"SV.html#blick2Seconds">blick2Seconds</a></li>
<li data-type='method' style='display: none;'><a href=
"SV.html#blickRoundDiv">blickRoundDiv</a></li>
<li data-type='method' style='display: none;'><a href=
"SV.html#blickRoundTo">blickRoundTo</a></li>
<li data-type='method' style='display: none;'><a href=
"SV.html#create">create</a></li>
<li data-type='method' style='display: none;'><a href=
"SV.html#finish">finish</a></li>
<li data-type='method' style='display: none;'><a href=
"SV.html#freq2Pitch">freq2Pitch</a></li>
<li data-type='method' style='display: none;'><a href=
"SV.html#getArrangement">getArrangement</a></li>
<li data-type='method' style='display: none;'><a href=
"SV.html#getHostClipboard">getHostClipboard</a></li>
<li data-type='method' style='display: none;'><a href=
"SV.html#getHostInfo">getHostInfo</a></li>
<li data-type='method' style='display: none;'><a href=
"SV.html#getMainEditor">getMainEditor</a></li>
<li data-type='method' style='display: none;'><a href=
"SV.html#getPhonemesForGroup">getPhonemesForGroup</a></li>
<li data-type='method' style='display: none;'><a href=
"SV.html#getPlayback">getPlayback</a></li>
<li data-type='method' style='display: none;'><a href=
"SV.html#getProject">getProject</a></li>
<li data-type='method' style='display: none;'><a href=
"SV.html#pitch2freq">pitch2freq</a></li>
<li data-type='method' style='display: none;'><a href=
"SV.html#quarter2Blick">quarter2Blick</a></li>
<li data-type='method' style='display: none;'><a href=
"SV.html#seconds2Blick">seconds2Blick</a></li>
<li data-type='method' style='display: none;'><a href=
"SV.html#setHostClipboard">setHostClipboard</a></li>
<li data-type='method' style='display: none;'><a href=
"SV.html#setTimeout">setTimeout</a></li>
<li data-type='method' style='display: none;'><a href=
"SV.html#showCustomDialog">showCustomDialog</a></li>
<li data-type='method' style='display: none;'><a href=
"SV.html#showCustomDialogAsync">showCustomDialogAsync</a></li>
<li data-type='method' style='display: none;'><a href=
"SV.html#showInputBox">showInputBox</a></li>
<li data-type='method' style='display: none;'><a href=
"SV.html#showInputBoxAsync">showInputBoxAsync</a></li>
<li data-type='method' style='display: none;'><a href=
"SV.html#showMessageBox">showMessageBox</a></li>
<li data-type='method' style='display: none;'><a href=
"SV.html#showMessageBoxAsync">showMessageBoxAsync</a></li>
<li data-type='method' style='display: none;'><a href=
"SV.html#showOkCancelBox">showOkCancelBox</a></li>
<li data-type='method' style='display: none;'><a href=
"SV.html#showOkCancelBoxAsync">showOkCancelBoxAsync</a></li>
<li data-type='method' style='display: none;'><a href=
"SV.html#showYesNoCancelBox">showYesNoCancelBox</a></li>
<li data-type='method' style='display: none;'><a href=
"SV.html#showYesNoCancelBoxAsync">showYesNoCancelBoxAsync</a></li>
<li data-type='method' style='display: none;'><a href=
"SV.html#T">T</a></li>
</ul>
</li>
<li><a href="TimeAxis.html">TimeAxis</a>
<ul class='methods'>
<li data-type='method' style='display: none;'><a href=
"TimeAxis.html#addMeasureMark">addMeasureMark</a></li>
<li data-type='method' style='display: none;'><a href=
"TimeAxis.html#addTempoMark">addTempoMark</a></li>
<li data-type='method' style='display: none;'><a href=
"TimeAxis.html#clone">clone</a></li>
<li data-type='method' style='display: none;'><a href=
"TimeAxis.html#getAllMeasureMarks">getAllMeasureMarks</a></li>
<li data-type='method' style='display: none;'><a href=
"TimeAxis.html#getAllTempoMarks">getAllTempoMarks</a></li>
<li data-type='method' style='display: none;'><a href=
"TimeAxis.html#getBlickFromSeconds">getBlickFromSeconds</a></li>
<li data-type='method' style='display: none;'><a href=
"TimeAxis.html#getIndexInParent">getIndexInParent</a></li>
<li data-type='method' style='display: none;'><a href=
"TimeAxis.html#getMeasureAt">getMeasureAt</a></li>
<li data-type='method' style='display: none;'><a href=
"TimeAxis.html#getMeasureMarkAt">getMeasureMarkAt</a></li>
<li data-type='method' style='display: none;'><a href=
"TimeAxis.html#getMeasureMarkAtBlick">getMeasureMarkAtBlick</a></li>
<li data-type='method' style='display: none;'><a href=
"TimeAxis.html#getParent">getParent</a></li>
<li data-type='method' style='display: none;'><a href=
"TimeAxis.html#getSecondsFromBlick">getSecondsFromBlick</a></li>
<li data-type='method' style='display: none;'><a href=
"TimeAxis.html#getTempoMarkAt">getTempoMarkAt</a></li>
<li data-type='method' style='display: none;'><a href=
"TimeAxis.html#isMemoryManaged">isMemoryManaged</a></li>
<li data-type='method' style='display: none;'><a href=
"TimeAxis.html#removeMeasureMark">removeMeasureMark</a></li>
<li data-type='method' style='display: none;'><a href=
"TimeAxis.html#removeTempoMark">removeTempoMark</a></li>
</ul>
</li>
<li><a href="Track.html">Track</a>
<ul class='methods'>
<li data-type='method' style='display: none;'><a href=
"Track.html#addGroupReference">addGroupReference</a></li>
<li data-type='method' style='display: none;'><a href=
"Track.html#clone">clone</a></li>
<li data-type='method' style='display: none;'><a href=
"Track.html#getDisplayColor">getDisplayColor</a></li>
<li data-type='method' style='display: none;'><a href=
"Track.html#getDisplayOrder">getDisplayOrder</a></li>
<li data-type='method' style='display: none;'><a href=
"Track.html#getDuration">getDuration</a></li>
<li data-type='method' style='display: none;'><a href=
"Track.html#getGroupReference">getGroupReference</a></li>
<li data-type='method' style='display: none;'><a href=
"Track.html#getIndexInParent">getIndexInParent</a></li>
<li data-type='method' style='display: none;'><a href=
"Track.html#getName">getName</a></li>
<li data-type='method' style='display: none;'><a href=
"Track.html#getNumGroups">getNumGroups</a></li>
<li data-type='method' style='display: none;'><a href=
"Track.html#getParent">getParent</a></li>
<li data-type='method' style='display: none;'><a href=
"Track.html#isBounced">isBounced</a></li>
<li data-type='method' style='display: none;'><a href=
"Track.html#isMemoryManaged">isMemoryManaged</a></li>
<li data-type='method' style='display: none;'><a href=
"Track.html#removeGroupReference">removeGroupReference</a></li>
<li data-type='method' style='display: none;'><a href=
"Track.html#setBounced">setBounced</a></li>
<li data-type='method' style='display: none;'><a href=
"Track.html#setDisplayColor">setDisplayColor</a></li>
<li data-type='method' style='display: none;'><a href=
"Track.html#setName">setName</a></li>
</ul>
</li>
<li><a href=
"TrackInnerSelectionState.html">TrackInnerSelectionState</a>
<ul class='methods'>
<li data-type='method' style='display: none;'><a href=
"TrackInnerSelectionState.html#clearAll">clearAll</a></li>
<li data-type='method' style='display: none;'><a href=
"TrackInnerSelectionState.html#clearGroups">clearGroups</a></li>
<li data-type='method' style='display: none;'><a href=
"TrackInnerSelectionState.html#clearNotes">clearNotes</a></li>
<li data-type='method' style='display: none;'><a href=
"TrackInnerSelectionState.html#getIndexInParent">getIndexInParent</a></li>
<li data-type='method' style='display: none;'><a href=
"TrackInnerSelectionState.html#getParent">getParent</a></li>
<li data-type='method' style='display: none;'><a href=
"TrackInnerSelectionState.html#getSelectedGroups">getSelectedGroups</a></li>
<li data-type='method' style='display: none;'><a href=
"TrackInnerSelectionState.html#getSelectedNotes">getSelectedNotes</a></li>
<li data-type='method' style='display: none;'><a href=
"TrackInnerSelectionState.html#hasSelectedContent">hasSelectedContent</a></li>
<li data-type='method' style='display: none;'><a href=
"TrackInnerSelectionState.html#hasSelectedGroups">hasSelectedGroups</a></li>
<li data-type='method' style='display: none;'><a href=
"TrackInnerSelectionState.html#hasSelectedNotes">hasSelectedNotes</a></li>
<li data-type='method' style='display: none;'><a href=
"TrackInnerSelectionState.html#hasUnfinishedEdits">hasUnfinishedEdits</a></li>
<li data-type='method' style='display: none;'><a href=
"TrackInnerSelectionState.html#isMemoryManaged">isMemoryManaged</a></li>
<li data-type='method' style='display: none;'><a href=
"TrackInnerSelectionState.html#selectGroup">selectGroup</a></li>
<li data-type='method' style='display: none;'><a href=
"TrackInnerSelectionState.html#selectNote">selectNote</a></li>
<li data-type='method' style='display: none;'><a href=
"TrackInnerSelectionState.html#unselectGroup">unselectGroup</a></li>
<li data-type='method' style='display: none;'><a href=
"TrackInnerSelectionState.html#unselectNote">unselectNote</a></li>
</ul>
</li>
</ul>
</nav>
<div id="main">
<h1 class="page-title">Tutorial: Memory Management</h1>
<section>
<header>
<h2>Memory Management</h2>
</header>
<article>
<p>The scripting system of Synthesizer V Studio uses a
reference-counting technique to share objects and safely transfer
the ownership between the host (which runs native code with
hard-coded memory management) and the client (which uses garbage
collection).</p>
<p>In most cases, script authors do not need to know the underlying
mechanism to write working and memory-safe code as most misuses
will be detected by the script environment, causing error messages
to pop up, e.g. "failed to access a deleted object". There however
could be edge cases that go undetected, and in very rare cases,
causing crashes.</p>
<h2>Managed and Unmanaged Objects</h2>
<ul>
<li>A <a href="NestedObject.html"><code>NestedObject</code></a> can
be garbage-collected (<strong>managed</strong>) by the client
environment if it has no parent, unless it is a top-level
host-owned object (e.g. the main project).</li>
<li>If a <a href="NestedObject.html"><code>NestedObject</code></a>
has a parent, then it is always <strong>unmanaged</strong>.</li>
</ul>
<p>For example, if a <a href=
"NoteGroup.html"><code>NoteGroup</code></a> is created from a
script with a few notes added to it,</p>
<ul>
<li>NoteGroup (managed)
<ul>
<li>Note 1 (unmanaged)</li>
<li>Note 2 (unmanaged)</li>
<li>Note 3 (unmanaged)</li>
<li>Automation 1 (unmanaged)</li>
<li>Automation 2 (unmanaged)</li>
<li>...</li>
</ul>
</li>
</ul>
<p>If the parent <a href=
"NoteGroup.html"><code>NoteGroup</code></a> gets garbage-collected
by the client, the host-side destructor for <a href=
"NoteGroup.html"><code>NoteGroup</code></a> will be triggered,
cleaning up all of its unmanaged children.</p>
<p>If the client environment has a reference to one of the
unmanaged notes in the <a href=
"NoteGroup.html"><code>NoteGroup</code></a>, the reference will be
marked as deleted when the unmanaged note gets deleted, that is,
either when the parent <a href=
"NoteGroup.html"><code>NoteGroup</code></a> gets garbage-collected,
or when the user explicitly deletes the note. Any attempt to access
the invalid reference will be detected and result in an error
message "failed to access a deleted 'Note' object".</p>
<p>When the managed <a href=
"NoteGroup.html"><code>NoteGroup</code></a> is added to a <a href=
"Project.html"><code>Project</code></a>, it gets converted into an
unmanaged object. This conversion is a simple state change that
signals the bypass of garbage collection and does not involve any
memory allocation/free/copy.</p>
</article>
</section>
</div>
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<footer><p>Documentation generated by <a href=
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