void Dump(int i, FILE* out, nsTraceRefcntImpl::StatisticsType type) {
nsTraceRefcntStats* stats = (type == nsTraceRefcntImpl::NEW_STATS) ? &mNewStats : &mAllStats;
if (gLogLeaksOnly && !HaveLeaks(stats)) {
return;
}
double meanRefs, stddevRefs;
NS_MeanAndStdDev(stats->mAddRefs + stats->mReleases,
stats->mRefsOutstandingTotal,
stats->mRefsOutstandingSquared,
&meanRefs, &stddevRefs);
double meanObjs, stddevObjs;
NS_MeanAndStdDev(stats->mCreates + stats->mDestroys,
stats->mObjsOutstandingTotal,
stats->mObjsOutstandingSquared,
&meanObjs, &stddevObjs);
if ((stats->mAddRefs - stats->mReleases) != 0 ||
stats->mAddRefs != 0 ||
meanRefs != 0 ||
stddevRefs != 0 ||
(stats->mCreates - stats->mDestroys) != 0 ||
stats->mCreates != 0 ||
meanObjs != 0 ||
stddevObjs != 0) {
fprintf(out, "%4d %-40.40s %8d %8llu %8llu %8llu (%8.2f +/- %8.2f) %8llu %8llu (%8.2f +/- %8.2f)\n",
i+1, mClassName,
(int32_t)mClassSize,
(nsCRT::strcmp(mClassName, "TOTAL"))
?(uint64_t)((stats->mCreates - stats->mDestroys) * mClassSize)
:mTotalLeaked,
stats->mCreates,
(stats->mCreates - stats->mDestroys),
meanObjs,
stddevObjs,
stats->mAddRefs,
(stats->mAddRefs - stats->mReleases),
meanRefs,
stddevRefs);
}
}
int
Test(const char* filename, int32_t minSize, int32_t maxSize,
int32_t sizeIncrement, int32_t iterations)
{
fprintf(stdout, " size write: mean stddev iters total: mean stddev iters\n");
for (int32_t size = minSize; size <= maxSize; size += sizeIncrement) {
// create a buffer of stuff to write
char* buf = (char*)PR_Malloc(size);
if (buf == nullptr)
return -1;
// initialize it with a pattern
int32_t i;
char hex[] = "0123456789ABCDEF";
for (i = 0; i < size; i++) {
buf[i] = hex[i & 0xF];
}
double writeCount = 0, writeRate = 0, writeRateSquared = 0;
double totalCount = 0, totalRate = 0, totalRateSquared = 0;
for (i = 0; i < iterations; i++) {
PRIntervalTime start = PR_IntervalNow();
char name[1024];
sprintf(name, "%s_%d", filename, i);
PRFileDesc* fd = PR_Open(name, PR_WRONLY | PR_CREATE_FILE | PR_TRUNCATE, 0664);
if (fd == nullptr)
return -1;
PRIntervalTime writeStart = PR_IntervalNow();
int32_t rv = PR_Write(fd, buf, size);
if (rv < 0) return rv;
if (rv != size) return -1;
PRIntervalTime writeStop = PR_IntervalNow();
PRStatus st = PR_Close(fd);
if (st == PR_FAILURE) return -1;
PRIntervalTime stop = PR_IntervalNow();
PRIntervalTime writeTime = PR_IntervalToMilliseconds(writeStop - writeStart);
if (writeTime > 0) {
double wr = size / writeTime;
writeRate += wr;
writeRateSquared += wr * wr;
writeCount++;
}
PRIntervalTime totalTime = PR_IntervalToMilliseconds(stop - start);
if (totalTime > 0) {
double t = size / totalTime;
totalRate += t;
totalRateSquared += t * t;
totalCount++;
}
}
PR_Free(buf);
double writeMean, writeStddev;
double totalMean, totalStddev;
NS_MeanAndStdDev(writeCount, writeRate, writeRateSquared,
&writeMean, &writeStddev);
NS_MeanAndStdDev(totalCount, totalRate, totalRateSquared,
&totalMean, &totalStddev);
fprintf(stdout, "%10d %10.2f %10.2f %10d %10.2f %10.2f %10d\n",
size, writeMean, writeStddev, (int32_t)writeCount,
totalMean, totalStddev, (int32_t)totalCount);
}
return 0;
}