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package org.openslx.bwlp.sat.util;
import org.openslx.bwlp.sat.fileserv.FileChunk;
public class Constants {
public static final String INCOMPLETE_UPLOAD_SUFFIX = ".part";
public static final int MAX_UPLOADS;
public static final int MAX_DOWNLOADS;
public static final int TRANSFER_TIMEOUT = 15 * 1000; // 15s
static {
long maxMem = Runtime.getRuntime().maxMemory();
if (maxMem == Long.MAX_VALUE) {
// Apparently the JVM was started without a memory limit (no -Xmx cmdline),
// so we assume a default of 256MB
maxMem = 256l * 1024l * 1024l;
}
maxMem /= 1024l * 1024l;
// Now maxMem is the amount of memory in MiB
MAX_UPLOADS = (int) Math.max(1, (maxMem - 64) / (FileChunk.CHUNK_SIZE_MIB + 1));
MAX_DOWNLOADS = MAX_UPLOADS * 2;
}
}
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