connect.c
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/*
* Copyright 1995, Silicon Graphics, Inc.
* All Rights Reserved.
*
* This is UNPUBLISHED PROPRIETARY SOURCE CODE of Silicon Graphics, Inc.;
* the contents of this file may not be disclosed to third parties, copied or
* duplicated in any form, in whole or in part, without the prior written
* permission of Silicon Graphics, Inc.
*
* RESTRICTED RIGHTS LEGEND:
* Use, duplication or disclosure by the Government is subject to restrictions
* as set forth in subdivision (c)(1)(ii) of the Rights in Technical Data
* and Computer Software clause at DFARS 252.227-7013, and/or in similar or
* successor clauses in the FAR, DOD or NASA FAR Supplement. Unpublished -
* rights reserved under the Copyright Laws of the United States.
*
*
* Connect to game, transfer profile data to host
*/
#include <sys/u64gio.h>
#include <bstring.h>
#include <errno.h>
#include <limits.h>
#include <ramrom.h>
#include <stdarg.h>
#include <stdio.h>
#include <stdlib.h>
#include <strings.h>
#include <ultraerror.h>
#include <unistd.h>
#include <sys/stat.h>
#include <sys/types.h>
#include <fcntl.h>
#include <rdb.h>
#include "gperf.h"
#ifndef MIN
#define MIN(a,b) (((a)<(b))?(a):(b))
#endif
static char errMessage[256];
static int ioctlRead(int, char *, int, char);
static int handleEvent(int);
static int writeProfData(char *, int);
/*
* Global histogram pointer, number of histograms, and overflow count
*/
static gPerfHisto *Gph = (gPerfHisto *)NULL;
static int u64fd;
static int verbose = 0;
/*
* Initialize
*/
int
profServerInit(void)
{
u8 sig = RDB_PROF_FLUSH_SIG;
if ((u64fd = open(DEV_U64_PROFILE, O_RDWR | O_NOCTTY)) < 0) {
sprintf(errMessage, "unable to open %s", DEV_U64_PROFILE);
perror(errMessage);
exit(1);
}
if (!ServerMode) {
printf("Sending flush signal from gperf\n");
if (write(u64fd,&sig, 1) < 0)
{
sprintf(errMessage, "error writing flush");
perror(errMessage);
return(-1);
}
}
}
u32 profReadWord(void)
{
u32 ct = 0;
u32 result;
u8 *cPtr = (char*)&result;
while(ct < sizeof(int))
ct += read(u64fd, &cPtr[ct], sizeof(int) - ct);
return(result);
}
/*
* Get flushed profile data
*/
int
profServer(void)
{
u32 numSections;
u32 tperiod;
u32 overflow;
u32 i;
u32 curprof;
u16 *curhisto;
u8 sig = RDB_PROF_ACK_SIG;
u8 *readPtr;
s32 totalBytes, bytesThisBlock,ct;
while(1)
{
numSections = profReadWord();
tperiod = profReadWord();
overflow = profReadWord();
Gph = (gPerfHisto *)malloc(sizeof(gPerfHisto) * numSections);
curprof = 0;
for(i = 0; i < numSections; i++)
{
Gph[curprof].start = profReadWord();
Gph[curprof].numEntrs = profReadWord();
totalBytes = Gph[curprof].numEntrs * sizeof(u16);
Gph[curprof].histo = (u16 *) malloc(totalBytes);
readPtr = (u8*)Gph[curprof].histo;
write(u64fd,&sig,1);
while(totalBytes > 0)
{
bytesThisBlock = MIN(totalBytes,PROF_BLOCK_SIZE);
ct = 0;
while(ct < bytesThisBlock)
ct += read(u64fd, &readPtr[ct], bytesThisBlock - ct);
readPtr += bytesThisBlock;
totalBytes -= bytesThisBlock;
write(u64fd,&sig,1);
}
curprof++;
}
/* okay to parse histogram here */
report(numSections, Gph, tperiod, overflow);
/* discard histogram data */
if (Gph)
{
for (i = 0; i < numSections; i++)
{
if (Gph[i].histo)
free(Gph[i].histo);
}
free(Gph);
}
}
return(0);
}