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use boolean flag to check state in close method

This commit is contained in:
Doug MacEachern 2006-07-06 18:37:38 +00:00
parent 170bc35076
commit e190a04ee4
1 changed files with 5 additions and 2 deletions
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7
bindings/java/src/org/hyperic/sigar/Sigar.java
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@ -51,6 +51,7 @@ public class Sigar implements SigarProxy {
private static SigarLoader loader = new SigarLoader(Sigar.class);
private FileSystemMap mounts = null;
private boolean open = false;
int sigarWrapper = 0; //holds the sigar_t *
long longSigarWrapper = 0; //same, but where sizeof(void*) > sizeof(int)
@ -125,6 +126,7 @@ public class Sigar implements SigarProxy {
public Sigar() {
try {
open();
this.open = true;
} catch (SigarException e) {
if (enableLogging) {
e.printStackTrace();
@ -151,9 +153,10 @@ public class Sigar implements SigarProxy {
* If the close method is not called directly, the finalize method will
* call it if the Sigar object is garbage collected.
*/
public void close() {
if (this.sigarWrapper != 0) {
public synchronized void close() {
if (this.open) {
nativeClose();
this.open = false;
}
}