// build table of all processes in system
//
int procinfo_setup(PROC_MAP& pm) {
DIR *dir;
dirent *piddir;
FILE* fd;
PROC_STAT ps;
char pidpath[MAXPATHLEN];
char buf[1024];
int pid = getpid();
int retval;
dir = opendir("/proc");
if (!dir) {
fprintf(stderr, "procinfo_setup(): can't open /proc\n");
return 0;
}
while (1) {
piddir = readdir(dir);
if (!piddir) break;
if (!isdigit(piddir->d_name[0])) continue;
#if defined(HAVE_PROCFS_H) && defined(HAVE__PROC_SELF_PSINFO) // solaris
psinfo_t psinfo;
sprintf(pidpath, "/proc/%s/psinfo", piddir->d_name);
fd = fopen(pidpath, "r");
if (!fd) continue;
PROCINFO p;
p.clear();
if (fread(&psinfo, sizeof(psinfo_t), 1, fd) == 1) {
p.id = psinfo.pr_pid;
p.parentid = psinfo.pr_ppid;
p.swap_size = psinfo.pr_size*1024.;
p.working_set_size = psinfo.pr_rssize * 1024.;
strlcpy(p.command, psinfo.pr_fname, sizeof(p.command));
}
fclose(fd);
sprintf(pidpath, "/proc/%s/usage", piddir->d_name);
prusage_t prusage;
fd = fopen(pidpath, "r");
if (!fd) continue;
if (fread(&prusage, sizeof(prusage_t), 1, fd) == 1) {
p.user_time = (float)prusage.pr_utime.tv_sec +
((float)prusage.pr_utime.tv_nsec)/1e+9;
p.kernel_time = (float)prusage.pr_stime.tv_sec +
((float)prusage.pr_utime.tv_nsec)/1e+9;
// page faults: I/O + non I/O
p.page_fault_count = prusage.pr_majf + prusage.pr_minf;
}
fclose(fd);
p.is_boinc_app = (p.id == pid || strcasestr(p.command, "boinc"));
pm.insert(std::pair(p.id, p));
#else // linux
sprintf(pidpath, "/proc/%s/stat", piddir->d_name);
fd = fopen(pidpath, "r");
if (!fd) continue;
if (fgets(buf, sizeof(buf), fd) == NULL) {
retval = ERR_NULL;
} else {
retval = ps.parse(buf);
}
fclose(fd);
if (retval) {
// ps.parse() returns an error if the executable name contains ).
// In that case skip this process.
//
continue;
}
PROCINFO p;
p.clear();
p.id = ps.pid;
p.parentid = ps.ppid;
p.swap_size = ps.vsize;
// rss = pages, need bytes
// assumes page size = 4k
p.working_set_size = ps.rss * (float)getpagesize();
// page faults: I/O + non I/O
p.page_fault_count = ps.majflt + ps.minflt;
// times are in jiffies, need seconds
// assumes 100 jiffies per second
p.user_time = ps.utime / 100.;
p.kernel_time = ps.stime / 100.;
strlcpy(p.command, ps.comm, sizeof(p.command));
p.is_boinc_app = (p.id == pid || strcasestr(p.command, "boinc"));
p.is_low_priority = (ps.priority == 39);
// Internally Linux stores the process priority as nice + 20
// as -ve values are error codes. Thus this generally gives
// a process priority range of 39..0
pm.insert(std::pair<int, PROCINFO>(p.id, p));
#endif
}
closedir(dir);
find_children(pm);
return 0;
}
// build table of all processes in system
//
int procinfo_setup(PROC_MAP& pm) {
#if HAVE_DIRENT_H
DIR *dir;
dirent *piddir;
FILE* fd;
PROC_STAT ps;
PROCINFO p;
char pidpath[MAXPATHLEN];
char buf[1024];
int pid = getpid();
int retval, final_retval = 0;
dir = opendir("/proc");
if (!dir) return 0;
while (1) {
piddir = readdir(dir);
if (!piddir) break;
if (!isdigit(piddir->d_name[0])) continue;
#if defined(HAVE_PROCFS_H) && defined(HAVE__PROC_SELF_PSINFO) // solaris
psinfo_t psinfo;
sprintf(pidpath, "/proc/%s/psinfo", piddir->d_name);
fd = fopen(pidpath, "r");
if (fd) {
p.clear();
if (fread(&psinfo, sizeof(psinfo_t), 1, fd) == 1) {
p.id = psinfo.pr_pid;
p.parentid = psinfo.pr_ppid;
p.swap_size = psinfo.pr_size*1024.;
p.working_set_size = psinfo.pr_rssize * 1024.;
strlcpy(p.command, psinfo.pr_fname, sizeof(p.command));
}
fclose(fd);
sprintf(pidpath, "/proc/%s/usage", piddir->d_name);
prusage_t prusage;
fd = fopen(pidpath, "r");
if (fd) {
if (fread(&prusage, sizeof(prusage_t), 1, fd) == 1) {
p.user_time = (float)prusage.pr_utime.tv_sec +
((float)prusage.pr_utime.tv_nsec)/1e+9;
p.kernel_time = (float)prusage.pr_stime.tv_sec +
((float)prusage.pr_utime.tv_nsec)/1e+9;
// page faults: I/O + non I/O
p.page_fault_count = prusage.pr_majf + prusage.pr_minf;
}
fclose(fd);
p.is_boinc_app = (p.id == pid || strcasestr(p.command, "boinc"));
pm.insert(std::pair(p.id, p));
}
}
#else // linux
sprintf(pidpath, "/proc/%s/stat", piddir->d_name);
fd = fopen(pidpath, "r");
if (fd) {
fgets(buf, sizeof(buf), fd);
retval = ps.parse(buf);
fclose(fd);
if (retval) {
final_retval = retval;
} else {
p.clear();
p.id = ps.pid;
p.parentid = ps.ppid;
p.swap_size = ps.vsize;
// rss = pages, need bytes
// assumes page size = 4k
p.working_set_size = ps.rss * (float)getpagesize();
// page faults: I/O + non I/O
p.page_fault_count = ps.majflt + ps.minflt;
// times are in jiffies, need seconds
// assumes 100 jiffies per second
p.user_time = ps.utime / 100.;
p.kernel_time = ps.stime / 100.;
strlcpy(p.command, ps.comm, sizeof(p.command));
p.is_boinc_app = (p.id == pid || strcasestr(p.command, "boinc"));
p.is_low_priority = (ps.priority == 39);
// Linux seems to add 20 here,
// but this isn't documented anywhere
pm.insert(std::pair<int, PROCINFO>(p.id, p));
}
}
#endif
}
closedir(dir);
#endif
find_children(pm);
return final_retval;
}
