Inno Setup - prevent executing the installer multiple times simultaneously

Author: lhDream

src/main/java/io/github/fvarrui/javapackager/model/WindowsConfig.java

@@ -39,6 +39,7 @@ public class WindowsConfig implements Serializable {
 	private boolean generateSetup = true;
 	private boolean generateMsi = true;
 	private boolean generateMsm = false;
+	private boolean setupMutex = true;
 	private String msiUpgradeCode;
 	private boolean wrapJar = true;
 	private LinkedHashMap<String, String> setupLanguages = new LinkedHashMap<>();
@@ -281,6 +282,14 @@ public boolean isDisableWelcomePage() {
 		return disableWelcomePage;
 	}
 
+	public boolean isSetupMutex() {
+		return setupMutex;
+	}
+
+	public void setSetupMutex(boolean setupMutex) {
+		this.setupMutex = setupMutex;
+	}
+
 	public boolean isRemoveOldLibs() {
 		return removeOldLibs;
 	}

src/main/resources/windows/iss.vtl

@@ -47,6 +47,9 @@ PrivilegesRequiredOverridesAllowed=commandline
 #else 
 PrivilegesRequiredOverridesAllowed=commandline dialog
 #end
+#if ($info.winConfig.setupMutex)
+SetupMutex=SetupMutex{#SetupSetting("AppId")}
+#end
 LicenseFile={#MyAppLicense}
 SetupIconFile={#MyAppIcon}
 UninstallDisplayIcon={app}\{#MyAppExeName}