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java.lang.Objectorg.apache.hadoop.util.ProcessTree
org.apache.hadoop.util.ProcfsBasedProcessTree
public class ProcfsBasedProcessTree
A Proc file-system based ProcessTree. Works only on Linux.
| Nested Class Summary |
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| Nested classes/interfaces inherited from class org.apache.hadoop.util.ProcessTree |
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ProcessTree.Signal |
| Field Summary | |
|---|---|
static long |
JIFFY_LENGTH_IN_MILLIS
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static long |
PAGE_SIZE
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| Fields inherited from class org.apache.hadoop.util.ProcessTree |
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isSetsidAvailable |
| Constructor Summary | |
|---|---|
ProcfsBasedProcessTree(String pid)
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ProcfsBasedProcessTree(String pid,
boolean setsidUsed)
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ProcfsBasedProcessTree(String pid,
String procfsDir)
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| Method Summary | |
|---|---|
long |
getCumulativeCpuTime()
Get the CPU time in millisecond used by all the processes in the process-tree since the process-tree created |
long |
getCumulativeRssmem()
Get the cumulative resident set size (rss) memory used by all the processes in the process-tree. |
long |
getCumulativeRssmem(int olderThanAge)
Get the cumulative resident set size (rss) memory used by all the processes in the process-tree that are older than the passed in age. |
long |
getCumulativeVmem()
Get the cumulative virtual memory used by all the processes in the process-tree. |
long |
getCumulativeVmem(int olderThanAge)
Get the cumulative virtual memory used by all the processes in the process-tree that are older than the passed in age. |
ProcfsBasedProcessTree |
getProcessTree()
Get the process-tree with latest state. |
String |
getProcessTreeDump()
Get a dump of the process-tree. |
boolean |
isAlive()
Is the root-process alive? |
boolean |
isAnyProcessInTreeAlive()
Is any of the subprocesses in the process-tree alive? |
static boolean |
isAvailable()
Checks if the ProcfsBasedProcessTree is available on this system. |
String |
toString()
Returns a string printing PIDs of process present in the ProcfsBasedProcessTree. |
| Methods inherited from class org.apache.hadoop.util.ProcessTree |
|---|
isAlive, isProcessGroupAlive, killProcess, killProcessGroup |
| Methods inherited from class java.lang.Object |
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clone, equals, finalize, getClass, hashCode, notify, notifyAll, wait, wait, wait |
| Field Detail |
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public static final long PAGE_SIZE
public static final long JIFFY_LENGTH_IN_MILLIS
| Constructor Detail |
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public ProcfsBasedProcessTree(String pid)
public ProcfsBasedProcessTree(String pid,
boolean setsidUsed)
public ProcfsBasedProcessTree(String pid,
String procfsDir)
| Method Detail |
|---|
public static boolean isAvailable()
public ProcfsBasedProcessTree getProcessTree()
public boolean isAlive()
public boolean isAnyProcessInTreeAlive()
public String getProcessTreeDump()
public long getCumulativeVmem()
public long getCumulativeRssmem()
public long getCumulativeVmem(int olderThanAge)
olderThanAge - processes above this age are included in the
memory addition
public long getCumulativeRssmem(int olderThanAge)
olderThanAge - processes above this age are included in the
memory addition
public long getCumulativeCpuTime()
public String toString()
toString in class Object
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