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/*
fastmemcpybench.c used to benchmark fastmemcpy.h code from libvo.
Note: this code can not be used on PentMMX-PII because they contain
a bug in rdtsc. For Intel processors since P6(PII) rdpmc should be used
instead. For PIII it's disputable and seems bug was fixed but I don't
tested it.
*/
#include <stdio.h>
#include <stdlib.h>
#include <string.h>
#include <sys/ioctl.h>
#include <unistd.h>
#include <fcntl.h>
#include <sys/mman.h>
#include <sys/time.h>
#include "../libvo/fastmemcpy.h"
//#define ARR_SIZE 100000
#define ARR_SIZE (1024*768*2)
#ifdef HAVE_MGA
#include "../drivers/mga_vid.h"
static int mga_next_frame=0;
static mga_vid_config_t mga_vid_config;
static unsigned char* frame=NULL;
static int f;
static int mga_init(){
char *frame_mem;
f = open("/dev/mga_vid",O_RDWR);
if(f == -1)
{
fprintf(stderr,"Couldn't open /dev/mga_vid\n");
return(-1);
}
mga_vid_config.num_frames=1;
mga_vid_config.frame_size=ARR_SIZE;
mga_vid_config.format=MGA_VID_FORMAT_YUY2;
mga_vid_config.colkey_on=0;
mga_vid_config.src_width = 640;
mga_vid_config.src_height= 480;
mga_vid_config.dest_width = 320;
mga_vid_config.dest_height= 200;
mga_vid_config.x_org= 0;
mga_vid_config.y_org= 0;
mga_vid_config.version=MGA_VID_VERSION;
if (ioctl(f,MGA_VID_CONFIG,&mga_vid_config))
{
perror("Error in mga_vid_config ioctl()");
printf("Your mga_vid driver version is incompatible with this MPlayer version!\n");
exit(1);
}
ioctl(f,MGA_VID_ON,0);
frame = (char*)mmap(0,mga_vid_config.frame_size*mga_vid_config.num_frames,PROT_WRITE,MAP_SHARED,f,0);
if(!frame){
printf("Can't mmap mga frame\n");
exit(1);
}
//clear the buffer
//memset(frames[0],0x80,mga_vid_config.frame_size*mga_vid_config.num_frames);
return 0;
}
#endif
// Returns current time in microseconds
unsigned int GetTimer(){
struct timeval tv;
struct timezone tz;
// float s;
gettimeofday(&tv,&tz);
// s=tv.tv_usec;s*=0.000001;s+=tv.tv_sec;
return (tv.tv_sec*1000000+tv.tv_usec);
}
static inline unsigned long long int read_tsc( void )
{
unsigned long long int retval;
__asm __volatile ("rdtsc":"=A"(retval)::"memory");
return retval;
}
unsigned char __attribute__((aligned(4096)))arr1[ARR_SIZE],arr2[ARR_SIZE];
int main( void )
{
unsigned long long int v1,v2;
unsigned char * marr1,*marr2;
int i;
unsigned int t;
#ifdef HAVE_MGA
mga_init();
marr1 = &frame[3];
#else
marr1 = &arr1[3];
#endif
marr2 = &arr2[9];
for(i=0; i<ARR_SIZE-16; i++) marr1[i] = marr2[i] = i;
t=GetTimer();
v1 = read_tsc();
for(i=0;i<100;i++) memcpy(marr1,marr2,ARR_SIZE-16);
v2 = read_tsc();
t=GetTimer()-t;
// ARR_SIZE*100/(1024*1024)/(t/1000000) = ARR_SIZE*95.36743/t
printf(NAME": cpu clocks=%llu = %dus (%5.3ffps) %5.1fMB/s\n",v2-v1,t,100000000.0f/(float)t,(float)ARR_SIZE*95.36743f/(float)t);
return 0;
}
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