test.cpp

linux多线程矩阵相乘（C＋＋) 采用多线程技术

// project created on 09-3-29 at 下12:03
#include <stdio.h>

#include <pthread.h>

const int row=4;
const int column1=5;
const int column2=4;

int sz1[row][column1]={1,2,3,4,5,2,3,4,5,6,3,4,5,6,7,4,5,6,7,8};
int sz2[column1][column2]={1,2,3,4,2,3,4,5,3,4,5,6,4,5,6,7,5,6,7,8};
int szRes[row][column2]={0};
 
const int threadNumber=row*column2;

struct IANDJ
{
int i;
int j;
};

void * funCal(void * arg)
{
    IANDJ *temp=(IANDJ *)arg;
    for(int i=0;i<column1;i++)
      szRes[temp->i][temp->j]+=sz1[temp->i][i]*sz2[i][temp->j];
}
	
int main (int argc, char *argv[])
{
	IANDJ *iandjs[threadNumber];
        for(int i=0;i<threadNumber;i++)
           iandjs[i]=new IANDJ();
	pthread_t hThread[threadNumber];
    for (int i = 0; i < row; i++)
     {
          for(int j=0;j< column2;j++)
             {
	       iandjs[i*row+j]->i=i;
             iandjs[i*row+j]->j=j;
             pthread_create(&hThread[i*row+j], NULL, funCal,iandjs[i*4+j]);
              }
      }
    for (int i = 0; i < threadNumber; i++)
       pthread_join(hThread[i], NULL);
    for(int i=0;i<row;i++)
      {
	     for(int j=0;j<column2;j++)
	       printf("%d ",szRes[i][j]);
	        printf("\n");
       }

	 return 0;
}