Print out various memory-related values in QuPath

QuPath-Check memory use.groovy

/**
 * Script to help track down memory leaks.
 * Uses JavaCPP, some useful info at https://javadoc.io/static/org.bytedeco/javacpp/1.5.5/org/bytedeco/javacpp/Pointer.html
 *
 * @author Pete Bankhead
 */

import org.bytedeco.javacpp.Pointer

System.gc()

//Pointer.trimMemory() // Private!

println "Runtime:"
var rt = Runtime.getRuntime()
printBytes("  maxMemory()       ", rt.maxMemory())
printBytes("  totalMemory()     ", rt.totalMemory())
printBytes("  freeMemory()      ", rt.freeMemory())
def usedMemory = (rt.totalMemory() - rt.freeMemory())
printBytes("  Memory used       ", usedMemory)

println("")
println "Pointer:"
printBytes("  maxBytes()        ", Pointer.maxBytes())
printBytes("  maxPhysicalBytes()", Pointer.maxPhysicalBytes())
printBytes("  totalBytes()      ", Pointer.totalBytes())
printBytes("  physicalBytes()   ", Pointer.physicalBytes())
try {
   println("")
   println "  Total count:       \t${Pointer.totalCount()}"
   println("")
} catch (Throwable t) {
    println '  Total count not available'
}

println "Operating system:"
printBytes("  Total:            ", Pointer.totalPhysicalBytes())
printBytes("  Available:        ", Pointer.availablePhysicalBytes())

void printBytes(String name, long n) {
    println "$name \t${n / (1024 * 1024)} MB"
}