pthread with the class

[airkh]

I want to use pthread with the class.

#pragma once
#include "jobtype.h"
#include <stdio.h>
#include <pthread.h>
#include <queue>
#include <string.h>
#include <sys/time.h>
#include <unistd.h>
#define _DEBUG_
#define MAXJOB 100

using namespace std;

typedef struct _vdata_t_
{
pthread_mutex_t mutex;
queue<job_t> jq;
} vdata_t;

class VM
{
private:
pthread_t tid;
float fUtil;
public:
int iVID;
struct timeval start;
vdata_t vdata;
public:
VM(void);
VM(int vid,int sid);
~VM(void);
int EnqJob(job_t job);
int Run(void);
static void* WorkingVM(void* data);
float GetUtil(void);
};

I put the working thread function (WorkingVM) in the class.
This VM class has a job queue. Outside of this class calls EnqJob() to push jobs, and WorkingVM will pop the queue, and handle the jobs.
So, I need a mutex on the job queue.

The problem is that it is impossible to access vdata from the thread function(WorkingVM). I cannot move out 'vdata' as a global variable since each VM instances must have its own job queue.

Any good design or solution about this?

Thank you in advance.

[writetonsharma]

when you create the thread, pass this pointer as a data to the thread function. there cast it to VM class. now you can access anything in the class.

[airkh]

I'll try that.

Thank you so much, writetonsharma.