mirror of https://github.com/xzeldon/htop.git
Hisham Muhammad
parent
ee5dc46fee
commit
322ba274ea
|
|
@ -1,4 +1,9 @@
|
|||
|
||||
What's new in version 1.0.3
|
||||
|
||||
* Performance improvements
|
||||
(thanks to Jann Horn)
|
||||
|
||||
What's new in version 1.0.2
|
||||
|
||||
* Add IO priority support ('i' key)
|
||||
|
|
|
|||
209
ProcessList.c
209
ProcessList.c
|
|
@ -24,6 +24,9 @@ in the source distribution for its full text.
|
|||
#include <string.h>
|
||||
#include <time.h>
|
||||
#include <assert.h>
|
||||
#include <sys/types.h>
|
||||
#include <fcntl.h>
|
||||
#include <errno.h>
|
||||
|
||||
/*{
|
||||
#include "Vector.h"
|
||||
|
|
@ -31,7 +34,6 @@ in the source distribution for its full text.
|
|||
#include "UsersTable.h"
|
||||
#include "Panel.h"
|
||||
#include "Process.h"
|
||||
#include <sys/types.h>
|
||||
|
||||
#ifndef PROCDIR
|
||||
#define PROCDIR "/proc"
|
||||
|
|
@ -175,6 +177,22 @@ const char *ProcessList_treeStrUtf8[TREE_STR_COUNT] = {
|
|||
"\xe2\x94\x80", // TREE_STR_SHUT ─
|
||||
};
|
||||
|
||||
static ssize_t xread(int fd, void *buf, size_t count) {
|
||||
// Read some bytes. Retry on EINTR and when we don't get as many bytes as we requested.
|
||||
size_t alreadyRead = 0;
|
||||
start:;
|
||||
ssize_t res = read(fd, buf, count);
|
||||
if (res == -1 && errno == EINTR) goto start;
|
||||
if (res > 0) {
|
||||
buf = ((char*)buf)+res;
|
||||
count -= res;
|
||||
alreadyRead += res;
|
||||
}
|
||||
if (res == -1) return -1;
|
||||
if (count == 0 || res == 0) return alreadyRead;
|
||||
goto start;
|
||||
}
|
||||
|
||||
ProcessList* ProcessList_new(UsersTable* usersTable, Hashtable* pidWhiteList) {
|
||||
ProcessList* this;
|
||||
this = calloc(sizeof(ProcessList), 1);
|
||||
|
|
@ -382,46 +400,73 @@ void ProcessList_sort(ProcessList* this) {
|
|||
static bool ProcessList_readStatFile(Process *process, const char* dirname, const char* name, char* command) {
|
||||
char filename[MAX_NAME+1];
|
||||
snprintf(filename, MAX_NAME, "%s/%s/stat", dirname, name);
|
||||
FILE* file = fopen(filename, "r");
|
||||
if (!file)
|
||||
int fd = open(filename, O_RDONLY);
|
||||
if (fd == -1)
|
||||
return false;
|
||||
|
||||
static char buf[MAX_READ];
|
||||
static char buf[MAX_READ+1];
|
||||
|
||||
int size = fread(buf, 1, MAX_READ, file);
|
||||
if (!size) { fclose(file); return false; }
|
||||
int size = xread(fd, buf, MAX_READ);
|
||||
close(fd);
|
||||
if (!size) return false;
|
||||
buf[size] = '\0';
|
||||
|
||||
assert(process->pid == atoi(buf));
|
||||
char *location = strchr(buf, ' ');
|
||||
if (!location) { fclose(file); return false; }
|
||||
if (!location) return false;
|
||||
|
||||
location += 2;
|
||||
char *end = strrchr(location, ')');
|
||||
if (!end) { fclose(file); return false; }
|
||||
if (!end) return false;
|
||||
|
||||
int commsize = end - location;
|
||||
memcpy(command, location, commsize);
|
||||
command[commsize] = '\0';
|
||||
location = end + 2;
|
||||
|
||||
int num = sscanf(location,
|
||||
"%c %d %u %u %u "
|
||||
"%d %lu "
|
||||
"%*u %*u %*u %*u "
|
||||
"%llu %llu %llu %llu "
|
||||
"%ld %ld %ld "
|
||||
"%*d %*u %*u %*d %*u %*u %*u %*u %*u %*u %*u %*u %*u %*u %*u %*u %*u "
|
||||
"%d %d",
|
||||
&process->state, &process->ppid, &process->pgrp, &process->session, &process->tty_nr,
|
||||
&process->tpgid, &process->flags,
|
||||
&process->utime, &process->stime, &process->cutime, &process->cstime,
|
||||
&process->priority, &process->nice, &process->nlwp,
|
||||
&process->exit_signal, &process->processor);
|
||||
fclose(file);
|
||||
return (num == 16);
|
||||
process->state = location[0];
|
||||
location += 2;
|
||||
process->ppid = strtol(location, &location, 10);
|
||||
location += 1;
|
||||
process->pgrp = strtoul(location, &location, 10);
|
||||
location += 1;
|
||||
process->session = strtoul(location, &location, 10);
|
||||
location += 1;
|
||||
process->tty_nr = strtoul(location, &location, 10);
|
||||
location += 1;
|
||||
process->tpgid = strtol(location, &location, 10);
|
||||
location += 1;
|
||||
process->flags = strtoul(location, &location, 10);
|
||||
location += 1;
|
||||
location = strchr(location, ' ')+1;
|
||||
location = strchr(location, ' ')+1;
|
||||
location = strchr(location, ' ')+1;
|
||||
location = strchr(location, ' ')+1;
|
||||
process->utime = strtoull(location, &location, 10);
|
||||
location += 1;
|
||||
process->stime = strtoull(location, &location, 10);
|
||||
location += 1;
|
||||
process->cutime = strtoull(location, &location, 10);
|
||||
location += 1;
|
||||
process->cstime = strtoull(location, &location, 10);
|
||||
location += 1;
|
||||
process->priority = strtol(location, &location, 10);
|
||||
location += 1;
|
||||
process->nice = strtol(location, &location, 10);
|
||||
location += 1;
|
||||
process->nlwp = strtol(location, &location, 10);
|
||||
location += 1;
|
||||
for (int i=0; i<17; i++) location = strchr(location, ' ')+1;
|
||||
process->exit_signal = strtol(location, &location, 10);
|
||||
location += 1;
|
||||
assert(location != NULL);
|
||||
process->processor = strtol(location, &location, 10);
|
||||
assert(location == NULL);
|
||||
|
||||
return true;
|
||||
}
|
||||
|
||||
static bool ProcessList_statProcessDir(Process* process, const char* dirname, char* name) {
|
||||
static bool ProcessList_statProcessDir(Process* process, const char* dirname, char* name, time_t curTime) {
|
||||
char filename[MAX_NAME+1];
|
||||
filename[MAX_NAME] = '\0';
|
||||
|
||||
|
|
@ -436,60 +481,65 @@ static bool ProcessList_statProcessDir(Process* process, const char* dirname, ch
|
|||
time_t ctime = sstat.st_ctime;
|
||||
process->starttime_ctime = ctime;
|
||||
(void) localtime_r((time_t*) &ctime, &date);
|
||||
strftime(process->starttime_show, 7, ((ctime > time(NULL) - 86400) ? "%R " : "%b%d "), &date);
|
||||
strftime(process->starttime_show, 7, ((ctime > curTime - 86400) ? "%R " : "%b%d "), &date);
|
||||
|
||||
return true;
|
||||
}
|
||||
|
||||
#ifdef HAVE_TASKSTATS
|
||||
|
||||
static void ProcessList_readIoFile(Process* process, const char* dirname, char* name) {
|
||||
static void ProcessList_readIoFile(Process* process, const char* dirname, char* name, unsigned long long now) {
|
||||
char filename[MAX_NAME+1];
|
||||
filename[MAX_NAME] = '\0';
|
||||
|
||||
snprintf(filename, MAX_NAME, "%s/%s/io", dirname, name);
|
||||
FILE* file = fopen(filename, "r");
|
||||
if (!file)
|
||||
int fd = open(filename, O_RDONLY);
|
||||
if (fd == -1)
|
||||
return;
|
||||
|
||||
char buffer[256];
|
||||
buffer[255] = '\0';
|
||||
struct timeval tv;
|
||||
gettimeofday(&tv,NULL);
|
||||
unsigned long long now = tv.tv_sec*1000+tv.tv_usec/1000;
|
||||
char buffer[1024];
|
||||
ssize_t buflen = xread(fd, buffer, 1023);
|
||||
close(fd);
|
||||
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;
|
||||
while (fgets(buffer, 255, file)) {
|
||||
switch (buffer[0]) {
|
||||
char *buf = buffer;
|
||||
char *line = NULL;
|
||||
while ((line = strsep(&buf, "\n")) != NULL) {
|
||||
switch (line[0]) {
|
||||
case 'r':
|
||||
if (buffer[1] == 'c')
|
||||
sscanf(buffer, "rchar: %llu", &process->io_rchar);
|
||||
else if (sscanf(buffer, "read_bytes: %llu", &process->io_read_bytes)) {
|
||||
if (line[1] == 'c' && strncmp(line+2, "har: ", 5) == 0)
|
||||
process->io_rchar = strtoull(line+7, NULL, 10);
|
||||
else if (strncmp(line+1, "ead_bytes: ", 11) == 0) {
|
||||
process->io_read_bytes = strtoull(line+12, NULL, 10);
|
||||
process->io_rate_read_bps =
|
||||
((double)(process->io_read_bytes - last_read))/(((double)(now - process->io_rate_read_time))/1000);
|
||||
process->io_rate_read_time = now;
|
||||
}
|
||||
break;
|
||||
case 'w':
|
||||
if (buffer[1] == 'c')
|
||||
sscanf(buffer, "wchar: %llu", &process->io_wchar);
|
||||
else if (sscanf(buffer, "write_bytes: %llu", &process->io_write_bytes)) {
|
||||
if (line[1] == 'c' && strncmp(line+2, "har: ", 5) == 0)
|
||||
process->io_wchar = strtoull(line+7, NULL, 10);
|
||||
else if (strncmp(line+1, "rite_bytes: ", 12) == 0) {
|
||||
process->io_write_bytes = strtoull(line+13, NULL, 10);
|
||||
process->io_rate_write_bps =
|
||||
((double)(process->io_write_bytes - last_write))/(((double)(now - process->io_rate_write_time))/1000);
|
||||
process->io_rate_write_time = now;
|
||||
}
|
||||
break;
|
||||
case 's':
|
||||
if (buffer[5] == 'r')
|
||||
sscanf(buffer, "syscr: %llu", &process->io_syscr);
|
||||
else
|
||||
sscanf(buffer, "syscw: %llu", &process->io_syscw);
|
||||
if (line[5] == 'r' && strncmp(line+1, "yscr: ", 6) == 0)
|
||||
process->io_syscr = strtoull(line+7, NULL, 10);
|
||||
else if (strncmp(line+1, "yscw: ", 6) == 0)
|
||||
sscanf(line, "syscw: %llu", &process->io_syscw);
|
||||
process->io_syscw = strtoull(line+7, NULL, 10);
|
||||
break;
|
||||
case 'c':
|
||||
sscanf(buffer, "cancelled_write_bytes: %llu", &process->io_cancelled_write_bytes);
|
||||
if (strncmp(line+1, "ancelled_write_bytes: ", 22) == 0)
|
||||
process->io_cancelled_write_bytes = strtoull(line+23, NULL, 10);
|
||||
}
|
||||
}
|
||||
fclose(file);
|
||||
}
|
||||
|
||||
#endif
|
||||
|
|
@ -497,16 +547,24 @@ static void ProcessList_readIoFile(Process* process, const char* dirname, char*
|
|||
static bool ProcessList_readStatmFile(Process* process, const char* dirname, const char* name) {
|
||||
char filename[MAX_NAME+1];
|
||||
snprintf(filename, MAX_NAME, "%s/%s/statm", dirname, name);
|
||||
FILE* file = fopen(filename, "r");
|
||||
if (!file)
|
||||
int fd = open(filename, O_RDONLY);
|
||||
if (fd == -1)
|
||||
return false;
|
||||
char buf[256];
|
||||
ssize_t rres = xread(fd, buf, 255);
|
||||
close(fd);
|
||||
if (rres < 1) return false;
|
||||
|
||||
int num = fscanf(file, "%32d %32d %32d %32d %32d %32d %32d",
|
||||
&process->m_size, &process->m_resident, &process->m_share,
|
||||
&process->m_trs, &process->m_lrs, &process->m_drs,
|
||||
&process->m_dt);
|
||||
fclose(file);
|
||||
return (num == 7);
|
||||
char *p = buf;
|
||||
errno = 0;
|
||||
process->m_size = strtol(p, &p, 10); if (*p == ' ') p++;
|
||||
process->m_resident = strtol(p, &p, 10); if (*p == ' ') p++;
|
||||
process->m_share = strtol(p, &p, 10); if (*p == ' ') p++;
|
||||
process->m_trs = strtol(p, &p, 10); if (*p == ' ') p++;
|
||||
process->m_lrs = strtol(p, &p, 10); if (*p == ' ') p++;
|
||||
process->m_drs = strtol(p, &p, 10); if (*p == ' ') p++;
|
||||
process->m_dt = strtol(p, &p, 10);
|
||||
return (errno == 0);
|
||||
}
|
||||
|
||||
#ifdef HAVE_OPENVZ
|
||||
|
|
@ -604,12 +662,13 @@ static bool ProcessList_readCmdlineFile(Process* process, const char* dirname, c
|
|||
|
||||
char filename[MAX_NAME+1];
|
||||
snprintf(filename, MAX_NAME, "%s/%s/cmdline", dirname, name);
|
||||
FILE* file = fopen(filename, "r");
|
||||
if (!file)
|
||||
int fd = open(filename, O_RDONLY);
|
||||
if (fd == -1)
|
||||
return false;
|
||||
|
||||
char command[4096+1]; // max cmdline length on Linux
|
||||
int amtRead = fread(command, 1, sizeof(command) - 1, file);
|
||||
int amtRead = xread(fd, command, sizeof(command) - 1);
|
||||
close(fd);
|
||||
if (amtRead > 0) {
|
||||
for (int i = 0; i < amtRead; i++)
|
||||
if (command[i] == '\0' || command[i] == '\n') {
|
||||
|
|
@ -617,7 +676,6 @@ static bool ProcessList_readCmdlineFile(Process* process, const char* dirname, c
|
|||
}
|
||||
}
|
||||
command[amtRead] = '\0';
|
||||
fclose(file);
|
||||
free(process->comm);
|
||||
process->comm = strdup(command);
|
||||
|
||||
|
|
@ -625,10 +683,15 @@ static bool ProcessList_readCmdlineFile(Process* process, const char* dirname, c
|
|||
}
|
||||
|
||||
|
||||
static bool ProcessList_processEntries(ProcessList* this, const char* dirname, Process* parent, double period) {
|
||||
static bool ProcessList_processEntries(ProcessList* this, const char* dirname, Process* parent, double period, struct timeval tv) {
|
||||
DIR* dir;
|
||||
struct dirent* entry;
|
||||
|
||||
time_t curTime = tv.tv_sec;
|
||||
#ifdef HAVE_TASKSTATS
|
||||
unsigned long long now = tv.tv_sec*1000+tv.tv_usec/1000;
|
||||
#endif
|
||||
|
||||
dir = opendir(dirname);
|
||||
if (!dir) return false;
|
||||
int cpus = this->cpuCount;
|
||||
|
|
@ -636,17 +699,23 @@ static bool ProcessList_processEntries(ProcessList* this, const char* dirname, P
|
|||
bool hideUserlandThreads = this->hideUserlandThreads;
|
||||
while ((entry = readdir(dir)) != NULL) {
|
||||
char* name = entry->d_name;
|
||||
|
||||
// The RedHat kernel hides threads with a dot.
|
||||
// I believe this is non-standard.
|
||||
if ((!this->hideThreads) && name[0] == '.') {
|
||||
name++;
|
||||
}
|
||||
|
||||
// Just skip all non-number directories.
|
||||
if (name[0] <= '0' || name[0] >= '9')
|
||||
continue;
|
||||
|
||||
// filename is a number: process directory
|
||||
int pid = atoi(name);
|
||||
|
||||
if (parent && pid == parent->pid)
|
||||
continue;
|
||||
|
||||
// The RedHat kernel hides threads with a dot.
|
||||
// I believe this is non-standard.
|
||||
if ((!this->hideThreads) && pid == 0 && name[0] == '.') {
|
||||
pid = atoi(name + 1);
|
||||
}
|
||||
if (pid <= 0)
|
||||
continue;
|
||||
|
||||
|
|
@ -666,10 +735,10 @@ static bool ProcessList_processEntries(ProcessList* this, const char* dirname, P
|
|||
|
||||
char subdirname[MAX_NAME+1];
|
||||
snprintf(subdirname, MAX_NAME, "%s/%s/task", dirname, name);
|
||||
ProcessList_processEntries(this, subdirname, process, period);
|
||||
ProcessList_processEntries(this, subdirname, process, period, tv);
|
||||
|
||||
#ifdef HAVE_TASKSTATS
|
||||
ProcessList_readIoFile(process, dirname, name);
|
||||
ProcessList_readIoFile(process, dirname, name, now);
|
||||
#endif
|
||||
|
||||
if (! ProcessList_readStatmFile(process, dirname, name))
|
||||
|
|
@ -689,7 +758,7 @@ static bool ProcessList_processEntries(ProcessList* this, const char* dirname, P
|
|||
|
||||
if(!existingProcess) {
|
||||
|
||||
if (! ProcessList_statProcessDir(process, dirname, name))
|
||||
if (! ProcessList_statProcessDir(process, dirname, name, curTime))
|
||||
goto errorReadingProcess;
|
||||
|
||||
process->user = UsersTable_getRef(this->usersTable, process->st_uid);
|
||||
|
|
@ -878,7 +947,9 @@ void ProcessList_scan(ProcessList* this) {
|
|||
this->kernelThreads = 0;
|
||||
this->runningTasks = 0;
|
||||
|
||||
ProcessList_processEntries(this, PROCDIR, NULL, period);
|
||||
struct timeval tv;
|
||||
gettimeofday(&tv, NULL);
|
||||
ProcessList_processEntries(this, PROCDIR, NULL, period, tv);
|
||||
|
||||
this->showingThreadNames = this->showThreadNames;
|
||||
|
||||
|
|
|
|||
|
|
@ -14,7 +14,6 @@ in the source distribution for its full text.
|
|||
#include "UsersTable.h"
|
||||
#include "Panel.h"
|
||||
#include "Process.h"
|
||||
#include <sys/types.h>
|
||||
|
||||
#ifndef PROCDIR
|
||||
#define PROCDIR "/proc"
|
||||
|
|
|
|||
Loading…
Reference in New Issue