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This commit is contained in:
Benny Baumann
2020-11-01 01:09:51 +01:00
parent 61e14d4bb2
commit 45869513bf
46 changed files with 656 additions and 277 deletions
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146
linux/LinuxProcessList.c
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@ -56,14 +56,21 @@ static ssize_t xread(int fd, void* buf, size_t count) {
size_t alreadyRead = 0;
for (;;) {
ssize_t res = read(fd, buf, count);
if (res == -1 && errno == EINTR) continue;
if (res == -1) {
if (errno == EINTR)
continue;
return -1;
}
if (res > 0) {
buf = ((char*)buf) + res;
count -= res;
alreadyRead += res;
}
if (res == -1) return -1;
if (count == 0 || res == 0) return alreadyRead;
if (count == 0 || res == 0) {
return alreadyRead;
}
}
}
@ -78,6 +85,7 @@ static void LinuxProcessList_initTtyDrivers(LinuxProcessList* this) {
int fd = open(PROCTTYDRIVERSFILE, O_RDONLY);
if (fd == -1)
return;
char* buf = NULL;
int bufSize = MAX_READ;
int bufLen = 0;
@ -160,21 +168,24 @@ static void LinuxProcessList_initNetlinkSocket(LinuxProcessList* this) {
static int LinuxProcessList_computeCPUcount(void) {
FILE* file = fopen(PROCSTATFILE, "r");
if (file == NULL)
if (file == NULL) {
CRT_fatalError("Cannot open " PROCSTATFILE);
}
int cpus = 0;
char buffer[PROC_LINE_LENGTH + 1];
while (fgets(buffer, sizeof(buffer), file)) {
if (String_startsWith(buffer, "cpu"))
if (String_startsWith(buffer, "cpu")) {
cpus++;
}
}
fclose(file);
/* subtract raw cpu entry */
if (cpus > 0)
if (cpus > 0) {
cpus--;
}
return cpus;
}
@ -218,16 +229,18 @@ ProcessList* ProcessList_new(UsersTable* usersTable, Hashtable* pidMatchList, ui
// Read btime
{
FILE* statfile = fopen(PROCSTATFILE, "r");
if (statfile == NULL)
if (statfile == NULL) {
CRT_fatalError("Cannot open " PROCSTATFILE);
}
while (true) {
char buffer[PROC_LINE_LENGTH + 1];
if (fgets(buffer, sizeof(buffer), statfile) == NULL) {
CRT_fatalError("No btime in " PROCSTATFILE);
} else if (String_startsWith(buffer, "btime ")) {
if (sscanf(buffer, "btime %lld\n", &btime) != 1)
if (sscanf(buffer, "btime %lld\n", &btime) != 1) {
CRT_fatalError("Failed to parse btime from " PROCSTATFILE);
}
break;
}
}
@ -298,16 +311,19 @@ static bool LinuxProcessList_readStatFile(Process* process, const char* dirname,
int size = xread(fd, buf, MAX_READ);
close(fd);
if (size <= 0) return false;
if (size <= 0)
return false;
buf[size] = '\0';
assert(process->pid == atoi(buf));
char* location = strchr(buf, ' ');
if (!location) return false;
if (!location)
return false;
location += 2;
char* end = strrchr(location, ')');
if (!end) return false;
if (!end)
return false;
int commsize = MINIMUM(end - location, commLenIn - 1);
// deepcode ignore BufferOverflow: commsize is bounded by the allocated length passed in by commLen, saved into commLenIn
@ -359,8 +375,9 @@ static bool LinuxProcessList_readStatFile(Process* process, const char* dirname,
location = strchr(location, ' ') + 1;
}
location += 1;
for (int i = 0; i < 15; i++)
for (int i = 0; i < 15; i++) {
location = strchr(location, ' ') + 1;
}
process->exit_signal = strtol(location, &location, 10);
location += 1;
assert(location != NULL);
@ -411,7 +428,9 @@ static void LinuxProcessList_readIoFile(LinuxProcess* process, const char* dirna
char buffer[1024];
ssize_t buflen = xread(fd, buffer, 1023);
close(fd);
if (buflen < 1) return;
if (buflen < 1)
return;
buffer[buflen] = '\0';
unsigned long long last_read = process->io_read_bytes;
unsigned long long last_write = process->io_write_bytes;
@ -464,6 +483,7 @@ static bool LinuxProcessList_readStatmFile(LinuxProcess* process, const char* di
FILE* statmfile = fopen(filename, "r");
if (!statmfile)
return false;
int r = fscanf(statmfile, "%ld %ld %ld %ld %ld %ld %ld",
&process->super.m_size,
&process->super.m_resident,
@ -636,9 +656,13 @@ static void LinuxProcessList_readCGroupFile(LinuxProcess* process, const char* d
while (!feof(file) && left > 0) {
char buffer[PROC_LINE_LENGTH + 1];
char* ok = fgets(buffer, PROC_LINE_LENGTH, file);
if (!ok) break;
if (!ok)
break;
char* group = strchr(buffer, ':');
if (!group) break;
if (!group)
break;
if (at != output) {
*at = ';';
at++;
@ -662,6 +686,7 @@ static void LinuxProcessList_readVServerData(LinuxProcess* process, const char*
FILE* file = fopen(filename, "r");
if (!file)
return;
char buffer[PROC_LINE_LENGTH + 1];
process->vxid = 0;
while (fgets(buffer, PROC_LINE_LENGTH, file)) {
@ -711,19 +736,22 @@ static void LinuxProcessList_readCtxtData(LinuxProcess* process, const char* dir
FILE* file = fopen(filename, "r");
if (!file)
return;
char buffer[PROC_LINE_LENGTH + 1];
unsigned long ctxt = 0;
while (fgets(buffer, PROC_LINE_LENGTH, file)) {
if (String_startsWith(buffer, "voluntary_ctxt_switches:")) {
unsigned long vctxt;
int ok = sscanf(buffer, "voluntary_ctxt_switches:\t%lu", &vctxt);
if (ok >= 1)
if (ok >= 1) {
ctxt += vctxt;
}
} else if (String_startsWith(buffer, "nonvoluntary_ctxt_switches:")) {
unsigned long nvctxt;
int ok = sscanf(buffer, "nonvoluntary_ctxt_switches:\t%lu", &nvctxt);
if (ok >= 1)
if (ok >= 1) {
ctxt += nvctxt;
}
}
}
fclose(file);
@ -749,10 +777,12 @@ static void LinuxProcessList_readSecattrData(LinuxProcess* process, const char*
return;
}
char* newline = strchr(buffer, '\n');
if (newline)
if (newline) {
*newline = '\0';
if (process->secattr && String_eq(process->secattr, buffer))
}
if (process->secattr && String_eq(process->secattr, buffer)) {
return;
}
free(process->secattr);
process->secattr = xStrdup(buffer);
}
@ -905,17 +935,28 @@ static char* LinuxProcessList_updateTtyDevice(TtyDriver* ttyDrivers, unsigned in
for (;;) {
xAsprintf(&fullPath, "%s/%d", ttyDrivers[i].path, idx);
int err = stat(fullPath, &sstat);
if (err == 0 && major(sstat.st_rdev) == maj && minor(sstat.st_rdev) == min) return fullPath;
if (err == 0 && major(sstat.st_rdev) == maj && minor(sstat.st_rdev) == min) {
return fullPath;
}
free(fullPath);
xAsprintf(&fullPath, "%s%d", ttyDrivers[i].path, idx);
err = stat(fullPath, &sstat);
if (err == 0 && major(sstat.st_rdev) == maj && minor(sstat.st_rdev) == min) return fullPath;
if (err == 0 && major(sstat.st_rdev) == maj && minor(sstat.st_rdev) == min) {
return fullPath;
}
free(fullPath);
if (idx == min) break;
if (idx == min) {
break;
}
idx = min;
}
int err = stat(ttyDrivers[i].path, &sstat);
if (err == 0 && tty_nr == sstat.st_rdev) return xStrdup(ttyDrivers[i].path);
if (err == 0 && tty_nr == sstat.st_rdev) {
return xStrdup(ttyDrivers[i].path);
}
}
char* out;
xAsprintf(&out, "/dev/%u:%u", maj, min);
@ -933,7 +974,9 @@ static bool LinuxProcessList_recurseProcTree(LinuxProcessList* this, const char*
#endif
dir = opendir(dirname);
if (!dir) return false;
if (!dir)
return false;
int cpus = pl->cpuCount;
bool hideKernelThreads = settings->hideKernelThreads;
bool hideUserlandThreads = settings->hideUserlandThreads;
@ -1001,15 +1044,21 @@ static bool LinuxProcessList_recurseProcTree(LinuxProcessList* this, const char*
unsigned int tty_nr = proc->tty_nr;
if (! LinuxProcessList_readStatFile(proc, dirname, name, command, &commLen))
goto errorReadingProcess;
if (tty_nr != proc->tty_nr && this->ttyDrivers) {
free(lp->ttyDevice);
lp->ttyDevice = LinuxProcessList_updateTtyDevice(this->ttyDrivers, proc->tty_nr);
}
if (settings->flags & PROCESS_FLAG_LINUX_IOPRIO)
if (settings->flags & PROCESS_FLAG_LINUX_IOPRIO) {
LinuxProcess_updateIOPriority(lp);
}
float percent_cpu = (lp->utime + lp->stime - lasttimes) / period * 100.0;
proc->percent_cpu = CLAMP(percent_cpu, 0.0, cpus * 100.0);
if (isnan(proc->percent_cpu)) proc->percent_cpu = 0.0;
if (isnan(proc->percent_cpu))
proc->percent_cpu = 0.0;
proc->percent_mem = (proc->m_resident * CRT_pageSizeKB) / (double)(pl->totalMem) * 100.0;
if (!preExisting) {
@ -1051,18 +1100,22 @@ static bool LinuxProcessList_recurseProcTree(LinuxProcessList* this, const char*
#endif
#ifdef HAVE_CGROUP
if (settings->flags & PROCESS_FLAG_LINUX_CGROUP)
if (settings->flags & PROCESS_FLAG_LINUX_CGROUP) {
LinuxProcessList_readCGroupFile(lp, dirname, name);
}
#endif
if (settings->flags & PROCESS_FLAG_LINUX_OOM)
if (settings->flags & PROCESS_FLAG_LINUX_OOM) {
LinuxProcessList_readOomData(lp, dirname, name);
}
if (settings->flags & PROCESS_FLAG_LINUX_CTXT)
if (settings->flags & PROCESS_FLAG_LINUX_CTXT) {
LinuxProcessList_readCtxtData(lp, dirname, name);
}
if (settings->flags & PROCESS_FLAG_LINUX_SECATTR)
if (settings->flags & PROCESS_FLAG_LINUX_SECATTR) {
LinuxProcessList_readSecattrData(lp, dirname, name);
}
if (proc->state == 'Z' && (proc->basenameOffset == 0)) {
proc->basenameOffset = -1;
@ -1072,8 +1125,9 @@ static bool LinuxProcessList_recurseProcTree(LinuxProcessList* this, const char*
proc->basenameOffset = -1;
setCommand(proc, command, commLen);
} else if (settings->showThreadNames) {
if (! LinuxProcessList_readCmdlineFile(proc, dirname, name))
if (! LinuxProcessList_readCmdlineFile(proc, dirname, name)) {
goto errorReadingProcess;
}
}
if (Process_isKernelThread(proc)) {
pl->kernelThreads++;
@ -1293,10 +1347,13 @@ static inline double LinuxProcessList_scanCPUTime(LinuxProcessList* this) {
// 5, 7, 8 or 9 of these fields will be set.
// The rest will remain at zero.
char* ok = fgets(buffer, PROC_LINE_LENGTH, file);
if (!ok) buffer[0] = '\0';
if (i == 0)
if (!ok) {
buffer[0] = '\0';
}
if (i == 0) {
(void) sscanf(buffer, "cpu %16llu %16llu %16llu %16llu %16llu %16llu %16llu %16llu %16llu %16llu", &usertime, &nicetime, &systemtime, &idletime, &ioWait, &irq, &softIrq, &steal, &guest, &guestnice);
else {
} else {
int cpuid;
(void) sscanf(buffer, "cpu%4d %16llu %16llu %16llu %16llu %16llu %16llu %16llu %16llu %16llu %16llu", &cpuid, &usertime, &nicetime, &systemtime, &idletime, &ioWait, &irq, &softIrq, &steal, &guest, &guestnice);
assert(cpuid == i - 1);
@ -1404,13 +1461,15 @@ static void scanCPUFreqencyFromCPUinfo(LinuxProcessList* this) {
(sscanf(buffer, "cpu MHz : %lf", &frequency) == 1) ||
(sscanf(buffer, "cpu MHz: %lf", &frequency) == 1)
) {
if (cpuid < 0 || cpuid > (cpus - 1))
if (cpuid < 0 || cpuid > (cpus - 1)) {
continue;
}
CPUData* cpuData = &(this->cpus[cpuid + 1]);
/* do not override sysfs data */
if (isnan(cpuData->frequency))
if (isnan(cpuData->frequency)) {
cpuData->frequency = frequency;
}
numCPUsWithFrequency++;
totalFrequency += frequency;
} else if (buffer[0] == '\n') {
@ -1419,19 +1478,22 @@ static void scanCPUFreqencyFromCPUinfo(LinuxProcessList* this) {
}
fclose(file);
if (numCPUsWithFrequency > 0)
if (numCPUsWithFrequency > 0) {
this->cpus[0].frequency = totalFrequency / numCPUsWithFrequency;
}
}
static void LinuxProcessList_scanCPUFrequency(LinuxProcessList* this) {
int cpus = this->super.cpuCount;
assert(cpus > 0);
for (int i = 0; i <= cpus; i++)
for (int i = 0; i <= cpus; i++) {
this->cpus[i].frequency = NAN;
}
if (scanCPUFreqencyFromSysCPUFreq(this) == 0)
if (scanCPUFreqencyFromSysCPUFreq(this) == 0) {
return;
}
scanCPUFreqencyFromCPUinfo(this);
}
@ -1447,12 +1509,14 @@ void ProcessList_goThroughEntries(ProcessList* super, bool pauseProcessUpdate) {
double period = LinuxProcessList_scanCPUTime(this);
if (settings->showCPUFrequency)
if (settings->showCPUFrequency) {
LinuxProcessList_scanCPUFrequency(this);
}
// in pause mode only gather global data for meters (CPU/memory/...)
if (pauseProcessUpdate)
if (pauseProcessUpdate) {
return;
}
struct timeval tv;
gettimeofday(&tv, NULL);