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vmm_stat.h
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C/C++ Source or Header
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1996-04-07
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3KB
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106 lines
#ifndef VMM_STAT_H
#define VMM_STAT_H
#include <exec/types.h>
#include <exec/tasks.h>
#include <exec/ports.h>
/**********************************************************************/
/* Getting statistics messages from VMM for further processing */
/**********************************************************************/
struct VMStatMsg
{
struct Message VMMessage; /* don't forget to put sizeof (struct VMStatMsg) */
/* into mn_Length. Future version of VMM might */
/* extend this structure */
struct Task *Sender;
UWORD Command;
UWORD ReplySignal;
ULONG VMSize;
ULONG VMFree;
ULONG Faults;
ULONG PagesWritten;
ULONG PagesRead;
ULONG NumFrames;
ULONG PagesUsed;
ULONG PageSize;
ULONG TrapStructsFree;
};
#define VMCMD_AskStat 1472
/* Do the following to get a statistics message from VMM:
*
* struct VMStatMsg *StatMsg;
* LONG VMSignal;
* struct MsgPort *VMPort;
*
* if ((StatMsg = AllocMem (sizeof (struct VMStatMsg), MEMF_PUBLIC)) == NULL)
* Cleanup ();
*
* if ((VMSignal = AllocSignal (-1L)) == -1L)
* Cleanup ();
*
* StatMsg->VMMessage.mn_Length = sizeof (struct VMStatMsg);
* StatMsg->Sender = FindTask (NULL);
* StatMsg->Command = VMCMD_AskStat;
* StatMsg->ReplySignal = VMSignal;
*
* Forbid ();
* if ((VMPort = FindPort ("VMM_Port")) != NULL)
* PutMsg (VMPort, (struct Message*)StatMsg);
* else
* ....
*
* Permit ();
*
* Wait (1L << VMSignal);
*
* When this returns the StatMsg will contain the necessary parameters.
* Do whatever you like with it.
*
* Cleanup ();
*
* Easy, isn't it?
*/
/**********************************************************************/
/* Getting VM usage statistics from VMM */
/**********************************************************************/
/* Send the following message structure to 'VMM_Port' just as a few lines
* above.
*/
struct VMUsageMsg
{
struct Message VMMessage; /* don't forget to put sizeof (struct VMStatMsg) */
/* into mn_Length. Future version of VMM might */
/* extend this structure */
struct Task *Sender;
UWORD Command;
UWORD ReplySignal;
struct List *TaskList;
};
/* Use this for the Command value */
#define VMCMD_AskVMUsage 1481
/* As soon as this returns, 'TaskList' will have been filled in.
* 'TaskList' is a list of 'struct TaskVMUsage' described below.
* You can do whatever you like with the list, but as soon as you are
* finished you should call FreeMem for every 'struct TaskVMUsage'
* with a size of 'FreeSize' and for the List structure.
*/
struct TaskVMUsage
{
struct Node vu_Node;
LONG VMInUse;
ULONG FreeSize;
};
#endif