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/* -*- Mode: C++; tab-width: 4; indent-tabs-mode: nil; c-basic-offset: 2 -*- */
/* This Source Code Form is subject to the terms of the Mozilla Public
* License, v. 2.0. If a copy of the MPL was not distributed with this
/***********************************************************************
**
** Contact: AOF<mailto:freier@netscape.com>
**
** Name: ranfile.c
**
** Description: Test to hammer on various components of NSPR
** Modification History:
** 20-May-97 AGarcia- Converted the test to accomodate the debug_mode flag.
** The debug mode will print all of the printfs associated with this test.
** The regress mode will be the default mode. Since the regress tool limits
** the output to a one line status:PASS or FAIL,all of the printf statements
** have been handled with an if (debug_mode) statement.
** 04-June-97 AGarcia removed the Test_Result function. Regress tool has been updated to
** recognize the return code from tha main program.
***********************************************************************/
/***********************************************************************
** Includes
***********************************************************************/
/* Used to get the command line option */
#include <plgetopt.h>
#include <prprf.h>
#include <prio.h>
#include "rccv.h"
#include "rcthread.h"
#include "rcfileio.h"
#include "rclock.h"
#include <string.h>
#include <stdio.h>
#include <stdlib.h>
static PRFileDesc *output;
static PRIntn debug_mode = 0;
static PRIntn failed_already = 0;
class HammerData
{
public:
typedef enum {
sg_go, sg_stop, sg_done
} Action;
typedef enum {
sg_okay, sg_open, sg_close, sg_delete, sg_write, sg_seek
} Problem;
virtual ~HammerData();
HammerData(RCLock* lock, RCCondition *cond, PRUint32 clip);
virtual PRUint32 Random();
Action action;
Problem problem;
PRUint32 writes;
RCInterval timein;
friend class Hammer;
private:
RCLock *ml;
RCCondition *cv;
PRUint32 limit;
PRFloat64 seed;
}; /* HammerData */
class Hammer: public HammerData, public RCThread
{
public:
virtual ~Hammer();
Hammer(RCThread::Scope scope, RCLock* lock, RCCondition *cond, PRUint32 clip);
private:
void RootFunction();
};
static PRInt32 pageSize = 1024;
static const char* baseName = "./";
static const char *programName = "Random File";
/***********************************************************************
** PRIVATE FUNCTION: Random
** DESCRIPTION:
** Generate a pseudo-random number
** INPUTS: None
** OUTPUTS: None
** RETURN: A pseudo-random unsigned number, 32-bits wide
** SIDE EFFECTS:
** Updates random seed (a static)
** RESTRICTIONS:
** None
** MEMORY: NA
** ALGORITHM:
** Uses the current interval timer value, promoted to a 64 bit
** float as a multiplier for a static residue (which begins
** as an uninitialized variable). The result is bits [16..48)
** of the product. Seed is then updated with the return value
** promoted to a float-64.
***********************************************************************/
PRUint32 HammerData::Random()
{
PRUint32 rv;
PRUint64 shift;
RCInterval now = RCInterval(RCInterval::now);
PRFloat64 random = seed * (PRFloat64)((PRIntervalTime)now);
LL_USHR(shift, *((PRUint64*)&random), 16);
LL_L2UI(rv, shift);
seed = (PRFloat64)rv;
return rv;
} /* HammerData::Random */
Hammer::~Hammer() { }
Hammer::Hammer(
RCThread::Scope scope, RCLock* lock, RCCondition *cond, PRUint32 clip):
HammerData(lock, cond, clip), RCThread(scope, RCThread::joinable, 0) { }
HammerData::~HammerData() { }
HammerData::HammerData(RCLock* lock, RCCondition *cond, PRUint32 clip)
{
ml = lock;
cv = cond;
writes = 0;
limit = clip;
seed = 0x58a9382;
action = HammerData::sg_go;
problem = HammerData::sg_okay;
timein = RCInterval(RCInterval::now);
} /* HammerData::HammerData */
/***********************************************************************
** PRIVATE FUNCTION: Hammer::RootFunction
** DESCRIPTION:
** Hammer on the file I/O system
** INPUTS: A pointer to the thread's private data
** OUTPUTS: None
** RETURN: None
** SIDE EFFECTS:
** Creates, accesses and deletes a file
** RESTRICTIONS:
** (Currently) must have file create permission in "/usr/tmp".
** MEMORY: NA
** ALGORITHM:
** This function is a root of a thread
** 1) Creates a (hopefully) unique file in /usr/tmp/
** 2) Writes a zero to a random number of sequential pages
** 3) Closes the file
** 4) Reopens the file
** 5) Seeks to a random page within the file
** 6) Writes a one byte on that page
** 7) Repeat steps [5..6] for each page in the file
** 8) Close and delete the file
** 9) Repeat steps [1..8] until told to stop
** 10) Notify complete and return
***********************************************************************/
void Hammer::RootFunction()
{
PRUint32 index;
RCFileIO file;
char filename[30];
const char zero = 0;
PRStatus rv = PR_SUCCESS;
limit = (Random() % limit) + 1;
(void)sprintf(filename, "%ssg%04p.dat", baseName, this);
if (debug_mode) {
PR_fprintf(output, "Starting work on %s\n", filename);
}
while (PR_TRUE)
{
PRUint64 bytes;
PRUint32 minor = (Random() % limit) + 1;
PRUint32 random = (Random() % limit) + 1;
PRUint32 pages = (Random() % limit) + 10;
while (minor-- > 0)
{
problem = sg_okay;
if (action != sg_go) {
goto finished;
}
problem = sg_open;
rv = file.Open(filename, PR_RDWR|PR_CREATE_FILE, 0666);
if (PR_FAILURE == rv) {
goto finished;
}
for (index = 0; index < pages; index++)
{
problem = sg_okay;
if (action != sg_go) {
goto close;
}
problem = sg_seek;
bytes = file.Seek(pageSize * index, RCFileIO::set);
if (bytes != pageSize * index) {
goto close;
}
problem = sg_write;
bytes = file.Write(&zero, sizeof(zero));
if (bytes <= 0) {
goto close;
}
writes += 1;
}
problem = sg_close;
rv = file.Close();
if (rv != PR_SUCCESS) {
goto purge;
}
problem = sg_okay;
if (action != sg_go) {
goto purge;
}
problem = sg_open;
rv = file.Open(filename, PR_RDWR, 0666);
if (PR_FAILURE == rv) {
goto finished;
}
for (index = 0; index < pages; index++)
{
problem = sg_okay;
if (action != sg_go) {
goto close;
}
problem = sg_seek;
bytes = file.Seek(pageSize * index, RCFileIO::set);
if (bytes != pageSize * index) {
goto close;
}
problem = sg_write;
bytes = file.Write(&zero, sizeof(zero));
if (bytes <= 0) {
goto close;
}
writes += 1;
random = (random + 511) % pages;
}
problem = sg_close;
rv = file.Close();
if (rv != PR_SUCCESS) {
goto purge;
}
problem = sg_delete;
rv = file.Delete(filename);
if (rv != PR_SUCCESS) {
goto finished;
}
}
}
close:
(void)file.Close();
purge:
(void)file.Delete(filename);
finished:
RCEnter scope(ml);
action = HammerData::sg_done;
cv->Notify();
if (debug_mode) {
PR_fprintf(output, "Ending work on %s\n", filename);
}
return;
} /* Hammer::RootFunction */
static Hammer* hammer[100];
/***********************************************************************
** PRIVATE FUNCTION: main
** DESCRIPTION:
** Hammer on the file I/O system
** INPUTS: The usual argc and argv
** argv[0] - program name (not used)
** argv[1] - the number of virtual_procs to execute the major loop
** argv[2] - the number of threads to toss into the batch
** argv[3] - the clipping number applied to randoms
** default values: max_virtual_procs = 2, threads = 10, limit = 57
** OUTPUTS: None
** RETURN: None
** SIDE EFFECTS:
** Creates, accesses and deletes lots of files
** RESTRICTIONS:
** (Currently) must have file create permission in "/usr/tmp".
** MEMORY: NA
** ALGORITHM:
** 1) Fork a "Thread()"
** 2) Wait for 'interleave' seconds
** 3) For [0..'threads') repeat [1..2]
** 4) Mark all objects to stop
** 5) Collect the threads, accumulating the results
** 6) For [0..'max_virtual_procs') repeat [1..5]
** 7) Print accumulated results and exit
**
** Characteristic output (from IRIX)
** Random File: Using max_virtual_procs = 2, threads = 10, limit = 57
** Random File: [min [avg] max] writes/sec average
***********************************************************************/
PRIntn main (PRIntn argc, char *argv[])
{
RCLock ml;
PLOptStatus os;
RCCondition cv(&ml);
PRUint32 writesMax = 0, durationTot = 0;
RCThread::Scope thread_scope = RCThread::local;
PRUint32 writes, writesMin = 0x7fffffff, writesTot = 0;
PRIntn active, poll, limit = 0, max_virtual_procs = 0, threads = 0, virtual_procs;
RCInterval interleave(RCInterval::FromMilliseconds(10000)), duration(0);
const char *where[] = {"okay", "open", "close", "delete", "write", "seek"};
PLOptState *opt = PL_CreateOptState(argc, argv, "Gdl:t:i:");
while (PL_OPT_EOL != (os = PL_GetNextOpt(opt)))
{
if (PL_OPT_BAD == os) {
continue;
}
switch (opt->option)
{
case 0:
baseName = opt->value;
break;
case 'G': /* global threads */
thread_scope = RCThread::global;
break;
case 'd': /* debug mode */
debug_mode = 1;
break;
case 'l': /* limiting number */
limit = atoi(opt->value);
break;
case 't': /* number of threads */
threads = atoi(opt->value);
break;
case 'i': /* iteration counter */
max_virtual_procs = atoi(opt->value);
break;
default:
break;
}
}
PL_DestroyOptState(opt);
output = PR_GetSpecialFD(PR_StandardOutput);
/* main test */
cv.SetTimeout(interleave);
if (max_virtual_procs == 0) {
max_virtual_procs = 2;
}
if (limit == 0) {
limit = 57;
}
if (threads == 0) {
threads = 10;
}
if (debug_mode) PR_fprintf(output,
"%s: Using %d virtual processors, %d threads, limit = %d and %s threads\n",
programName, max_virtual_procs, threads, limit,
(thread_scope == RCThread::local) ? "LOCAL" : "GLOBAL");
for (virtual_procs = 0; virtual_procs < max_virtual_procs; ++virtual_procs)
{
if (debug_mode)
PR_fprintf(output,
"%s: Setting number of virtual processors to %d\n",
programName, virtual_procs + 1);
RCPrimordialThread::SetVirtualProcessors(virtual_procs + 1);
for (active = 0; active < threads; active++)
{
hammer[active] = new Hammer(thread_scope, &ml, &cv, limit);
hammer[active]->Start(); /* then make it roll */
RCThread::Sleep(interleave); /* start them slowly */
}
/*
* The last thread started has had the opportunity to run for
* 'interleave' seconds. Now gather them all back in.
*/
{
RCEnter scope(&ml);
for (poll = 0; poll < threads; poll++)
{
if (hammer[poll]->action == HammerData::sg_go) { /* don't overwrite done */
hammer[poll]->action = HammerData::sg_stop; /* ask him to stop */
}
}
}
while (active > 0)
{
for (poll = 0; poll < threads; poll++)
{
ml.Acquire();
while (hammer[poll]->action < HammerData::sg_done) {
cv.Wait();
}
ml.Release();
if (hammer[poll]->problem == HammerData::sg_okay)
{
duration = RCInterval(RCInterval::now) - hammer[poll]->timein;
writes = hammer[poll]->writes * 1000 / duration;
if (writes < writesMin) {
writesMin = writes;
}
if (writes > writesMax) {
writesMax = writes;
}
writesTot += hammer[poll]->writes;
durationTot += duration;
}
else
{
if (debug_mode) PR_fprintf(output,
"%s: test failed %s after %ld seconds\n",
programName, where[hammer[poll]->problem], duration);
else {
failed_already=1;
}
}
active -= 1; /* this is another one down */
(void)hammer[poll]->Join();
hammer[poll] = NULL;
}
}
if (debug_mode) PR_fprintf(output,
"%s: [%ld [%ld] %ld] writes/sec average\n",
programName, writesMin,
writesTot * 1000 / durationTot, writesMax);
}
failed_already |= (PR_FAILURE == RCPrimordialThread::Cleanup());
PR_fprintf(output, "%s\n", (failed_already) ? "FAIL\n" : "PASS\n");
return failed_already;
} /* main */