[MPlayer-cvslog] r28903 - trunk/TOOLS/fastmemcpybench.c
diego
subversion at mplayerhq.hu
Mon Mar 9 12:28:32 CET 2009
Author: diego
Date: Mon Mar 9 12:28:31 2009
New Revision: 28903
Log:
whitespace cosmetics:
- Remove all tabs and trailing whitespace.
- Indent with 4 spaces.
- K&R-ify and prettyprint some parts.
Modified:
trunk/TOOLS/fastmemcpybench.c
Modified: trunk/TOOLS/fastmemcpybench.c
==============================================================================
--- trunk/TOOLS/fastmemcpybench.c Mon Mar 9 12:02:54 2009 (r28902)
+++ trunk/TOOLS/fastmemcpybench.c Mon Mar 9 12:28:31 2009 (r28903)
@@ -1,6 +1,6 @@
/*
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
@@ -27,50 +27,48 @@
#include "drivers/mga_vid.h"
static mga_vid_config_t mga_vid_config;
-static unsigned char* frame=NULL;
+static unsigned char* frame = NULL;
static int f;
static int mga_init(void)
{
- f = open("/dev/mga_vid",O_RDWR);
- if(f == -1)
- {
- fprintf(stderr,"Couldn't open /dev/mga_vid\n");
- return -1;
- }
+ 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.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);
+ 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;
- 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);
- }
+ 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);
- //clear the buffer
- //memset(frames[0],0x80,mga_vid_config.frame_size*mga_vid_config.num_frames);
+ 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);
+ }
- return 0;
+ //clear the buffer
+ //memset(frames[0], 0x80, mga_vid_config.frame_size*mga_vid_config.num_frames);
+ return 0;
}
#endif
@@ -78,45 +76,48 @@ static int mga_init(void)
// Returns current time in microseconds
static unsigned int GetTimer(void)
{
- 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;
-}
+ 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 )
+static inline unsigned long long int read_tsc(void)
{
- unsigned long long int retval;
- __asm__ volatile ("rdtsc":"=A"(retval)::"memory");
- return retval;
+ unsigned long long int retval;
+ __asm__ volatile ("rdtsc":"=A" (retval)::"memory");
+ return retval;
}
-unsigned char __attribute__((aligned(4096)))arr1[ARR_SIZE],arr2[ARR_SIZE];
+unsigned char __attribute__((aligned(4096)))arr1[ARR_SIZE], arr2[ARR_SIZE];
-int main( void )
+int main(void)
{
- unsigned long long int v1,v2;
- unsigned char * marr1,*marr2;
- int i;
- unsigned int t;
+ unsigned long long int v1, v2;
+ unsigned char *marr1, *marr2;
+ int i;
+ unsigned int t;
#ifdef CONFIG_MGA
- mga_init();
- marr1 = &frame[3];
+ mga_init();
+ marr1 = &frame[3];
#else
- marr1 = &arr1[0];
+ marr1 = &arr1[0];
#endif
- marr2 = &arr2[0];
+ marr2 = &arr2[0];
- for(i=0; i<ARR_SIZE-16; i++) marr1[i] = marr2[i] = i;
+ 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;
+ 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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