Is there a pgm that will interpret all the fields that are printed by
cat /proc/PID/stat ( or statm, or any of the info on a per process basis
)
See if the following simple function and the associated structure
that I put together sometime ago while checking out some threads-
related stuff on Linux/Alpha is of use. Also note that the format
characters as given in the man page for proc are not all correct
on Alpha. I just when to the sources to get them right (RTFS?:-))
typedef struct statstruct_proc {
int pid; /** The process id. **/
char exName [_POSIX_PATH_MAX]; /** The filename of the executable **/
char state; /** 1 **/ /** R is running, S is sleeping,
D is sleeping in an uninterruptible wait,
Z is zombie, T is traced or stopped **/
unsigned euid, /** effective user id **/
egid; /** effective group id */
int ppid; /** The pid of the parent. **/
int pgrp; /** The pgrp of the process. **/
int session; /** The session id of the process. **/
int tty; /** The tty the process uses **/
int tpgid; /** (too long) **/
unsigned int flags; /** The flags of the process. **/
unsigned int minflt; /** The number of minor faults **/
unsigned int cminflt; /** The number of minor faults with childs **/
unsigned int majflt; /** The number of major faults **/
unsigned int cmajflt; /** The number of major faults with childs **/
int utime; /** user mode jiffies **/
int stime; /** kernel mode jiffies **/
int cutime; /** user mode jiffies with childs **/
int cstime; /** kernel mode jiffies with childs **/
int counter; /** process's next timeslice **/
int priority; /** the standard nice value, plus fifteen **/
unsigned int timeout; /** The time in jiffies of the next timeout **/
unsigned int itrealvalue; /** The time before the next SIGALRM is sent to the process **/
int starttime; /** 20 **/ /** Time the process started after system boot **/
unsigned int vsize; /** Virtual memory size **/
unsigned int rss; /** Resident Set Size **/
unsigned int rlim; /** Current limit in bytes on the rss **/
unsigned int startcode; /** The address above which program text can run **/
unsigned int endcode; /** The address below which program text can run **/
unsigned int startstack; /** The address of the start of the stack **/
unsigned int kstkesp; /** The current value of ESP **/
unsigned int kstkeip; /** The current value of EIP **/
int signal; /** The bitmap of pending signals **/
int blocked; /** 30 **/ /** The bitmap of blocked signals **/
int sigignore; /** The bitmap of ignored signals **/
int sigcatch; /** The bitmap of catched signals **/
unsigned int wchan; /** 33 **/ /** (too long) **/
int sched, /** scheduler **/
sched_priority; /** scheduler priority **/
} procinfo;
int get_proc_info(pid_t pid, procinfo * pinfo)
{
char szFileName [_POSIX_PATH_MAX],
szStatStr [2048],
*s, *t;
FILE *fp;
struct stat st;
if (NULL == pinfo) {
errno = EINVAL;
return -1;
}
sprintf (szFileName, "/proc/%u/stat", (unsigned) pid);
if (-1 == access (szFileName, R_OK)) {
return (pinfo->pid = -1);
} /** if **/
if (-1 != stat (szFileName, &st)) {
pinfo->euid = st.st_uid;
pinfo->egid = st.st_gid;
} else {
pinfo->euid = pinfo->egid = -1;
}
if ((fp = fopen (szFileName, "r")) == NULL) {
return (pinfo->pid = -1);
} /** IF_NULL **/
if ((s = fgets (szStatStr, 2048, fp)) == NULL) {
fclose (fp);
return (pinfo->pid = -1);
}
/** pid **/
sscanf (szStatStr, "%u", &(pinfo->pid));
s = strchr (szStatStr, '(') 1;
t = strchr (szStatStr, ')');文章整理：西部数码--专业提供域名注册、虚拟主机服务
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