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Merge pull request #550 from natoscott/diskio-types

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Fix integer sizing issues in the DiskIO Meter
This commit is contained in:
Nathan Scott 2021-03-02 13:34:52 +11:00 committed by GitHub
commit 29570c0133
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4 changed files with 25 additions and 19 deletions
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30
DiskIOMeter.c
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@ -26,23 +26,24 @@ static const int DiskIOMeter_attributes[] = {
};
static bool hasData = false;
static unsigned long int cached_read_diff = 0;
static unsigned long int cached_write_diff = 0;
static double cached_utilisation_diff = 0.0;
static uint32_t cached_read_diff;
static uint32_t cached_write_diff;
static double cached_utilisation_diff;
static void DiskIOMeter_updateValues(Meter* this, char* buffer, size_t len) {
static unsigned long long int cached_last_update = 0;
static uint64_t cached_last_update;
struct timeval tv;
gettimeofday(&tv, NULL);
unsigned long long int timeInMilliSeconds = (unsigned long long int)tv.tv_sec * 1000 + (unsigned long long int)tv.tv_usec / 1000;
unsigned long long int passedTimeInMs = timeInMilliSeconds - cached_last_update;
uint64_t timeInMilliSeconds = (uint64_t)tv.tv_sec * 1000 + (uint64_t)tv.tv_usec / 1000;
uint64_t passedTimeInMs = timeInMilliSeconds - cached_last_update;
/* update only every 500ms */
if (passedTimeInMs > 500) {
static unsigned long int cached_read_total = 0;
static unsigned long int cached_write_total = 0;
static unsigned long int cached_msTimeSpend_total = 0;
static uint64_t cached_read_total;
static uint64_t cached_write_total;
static uint64_t cached_msTimeSpend_total;
uint64_t diff;
cached_last_update = timeInMilliSeconds;
@ -56,21 +57,26 @@ static void DiskIOMeter_updateValues(Meter* this, char* buffer, size_t len) {
}
if (data.totalBytesRead > cached_read_total) {
cached_read_diff = (data.totalBytesRead - cached_read_total) / 1024; /* Meter_humanUnit() expects unit in kilo */
diff = data.totalBytesRead - cached_read_total;
diff /= 1024; /* Meter_humanUnit() expects unit in kilo */
cached_read_diff = (uint32_t)diff;
} else {
cached_read_diff = 0;
}
cached_read_total = data.totalBytesRead;
if (data.totalBytesWritten > cached_write_total) {
cached_write_diff = (data.totalBytesWritten - cached_write_total) / 1024; /* Meter_humanUnit() expects unit in kilo */
diff = data.totalBytesWritten - cached_write_total;
diff /= 1024; /* Meter_humanUnit() expects unit in kilo */
cached_write_diff = (uint32_t)diff;
} else {
cached_write_diff = 0;
}
cached_write_total = data.totalBytesWritten;
if (data.totalMsTimeSpend > cached_msTimeSpend_total) {
cached_utilisation_diff = 100 * (double)(data.totalMsTimeSpend - cached_msTimeSpend_total) / passedTimeInMs;
diff = data.totalMsTimeSpend - cached_msTimeSpend_total;
cached_utilisation_diff = 100.0 * (double)diff / passedTimeInMs;
} else {
cached_utilisation_diff = 0.0;
}

6
DiskIOMeter.h
View File

@ -10,9 +10,9 @@ in the source distribution for its full text.
#include "Meter.h"
typedef struct DiskIOData_ {
unsigned long int totalBytesRead;
unsigned long int totalBytesWritten;
unsigned long int totalMsTimeSpend;
uint64_t totalBytesRead;
uint64_t totalBytesWritten;
uint64_t totalMsTimeSpend;
} DiskIOData;
extern const MeterClass DiskIOMeter_class;

2
freebsd/Platform.c
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@ -289,7 +289,7 @@ bool Platform_getDiskIO(DiskIOData* data) {
int count = current.dinfo->numdevs;
unsigned long int bytesReadSum = 0, bytesWriteSum = 0, timeSpendSum = 0;
unsigned long long int bytesReadSum = 0, bytesWriteSum = 0, timeSpendSum = 0;
// get data
for (int i = 0; i < count; i++) {

6
linux/Platform.c
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@ -494,12 +494,12 @@ bool Platform_getDiskIO(DiskIOData* data) {
if (!fd)
return false;
unsigned long int read_sum = 0, write_sum = 0, timeSpend_sum = 0;
unsigned long long int read_sum = 0, write_sum = 0, timeSpend_sum = 0;
char lineBuffer[256];
while (fgets(lineBuffer, sizeof(lineBuffer), fd)) {
char diskname[32];
unsigned long int read_tmp, write_tmp, timeSpend_tmp;
if (sscanf(lineBuffer, "%*d %*d %31s %*u %*u %lu %*u %*u %*u %lu %*u %*u %lu", diskname, &read_tmp, &write_tmp, &timeSpend_tmp) == 4) {
unsigned long long int read_tmp, write_tmp, timeSpend_tmp;
if (sscanf(lineBuffer, "%*d %*d %31s %*u %*u %llu %*u %*u %*u %llu %*u %*u %llu", diskname, &read_tmp, &write_tmp, &timeSpend_tmp) == 4) {
if (String_startsWith(diskname, "dm-"))
continue;