added ps etimes, miscellaneous top enhancements
ps program . etimes added for ELAPSED expressed in seconds . time_t used in place of former unsigned long top program . corrected scroll message bug when 'x' toggle on . fixed forest view potential missing libflags bug . improved 'k' default signal invocation logic . enhanced logic for %CPU maximums displayed . made signal handling more robust and efficient
This commit is contained in:
Craig Small
parent
73ade5e2cb
commit
e4c45d6984
@ -301,7 +301,7 @@ extern int prefer_bsd_defaults;
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extern int running_only;
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extern int screen_cols;
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extern int screen_rows;
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extern unsigned long seconds_since_boot;
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extern time_t seconds_since_boot;
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extern selection_node *selection_list;
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extern unsigned simple_select;
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extern sort_node *sort_list;
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@ -489,10 +489,12 @@ not_root:
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/* don't free the array because it takes time and ps will exit anyway */
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}
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#if 0
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static int want_this_proc_nop(proc_t *dummy){
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(void)dummy;
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return 1;
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}
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#endif
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/***** sorted or forest */
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static void fancy_spew(void){
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@ -69,7 +69,7 @@ unsigned personality = 0xffffffff;
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int prefer_bsd_defaults = -1;
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int screen_cols = -1;
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int screen_rows = -1;
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unsigned long seconds_since_boot = -1;
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time_t seconds_since_boot = -1;
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selection_node *selection_list = (selection_node *)0xdeadbeef;
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unsigned simple_select = 0xffffffff;
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sort_node *sort_list = (sort_node *)0xdeadbeef; /* ready-to-use sort list */
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19
ps/output.c
19
ps/output.c
@ -76,7 +76,8 @@ static unsigned max_leftward = 0x12345678; /* space for LEFT stuff */
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static int wide_signals; /* true if we have room */
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static unsigned long seconds_since_1970;
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static time_t seconds_since_1970;
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static time_t time_of_boot;
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static unsigned long page_shift;
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@ -277,6 +278,13 @@ STIME stime hms or md time format
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***/
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/* Source & destination are known. Return bytes or screen characters? */
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//
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// OldLinux FreeBSD HPUX
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// ' ' ' ' ' ' ' '
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// 'L' ' \_ ' '`-' ' '
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// '+' ' \_ ' '|-' ' '
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// '|' ' | ' '| ' ' '
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//
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static int forest_helper(char *restrict const outbuf){
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char *p = forest_prefix;
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char *q = outbuf;
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@ -430,6 +438,12 @@ static int pr_etime(char *restrict const outbuf, const proc_t *restrict const pp
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return (int)(cp-outbuf);
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}
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/* elapsed wall clock time in seconds */
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static int pr_etimes(char *restrict const outbuf, const proc_t *restrict const pp){
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unsigned t = seconds_since_boot - (unsigned long)(pp->start_time / Hertz);
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return snprintf(outbuf, COLWID, "%u", t);
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}
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/* "Processor utilisation for scheduling." --- we use %cpu w/o fraction */
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static int pr_c(char *restrict const outbuf, const proc_t *restrict const pp){
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unsigned long long total_time; /* jiffies used by this process */
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@ -950,7 +964,7 @@ static int pr_start(char *restrict const outbuf, const proc_t *restrict const pp
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str = ctime(&t);
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if(str[8]==' ') str[8]='0';
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if(str[11]==' ') str[11]='0';
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if((unsigned long)t+60*60*24 > seconds_since_1970)
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if((unsigned long)t+60*60*24 > (unsigned long)seconds_since_1970)
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return snprintf(outbuf, COLWID, "%8.8s", str+11);
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return snprintf(outbuf, COLWID, " %6.6s", str+4);
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}
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@ -1345,6 +1359,7 @@ static const format_struct format_array[] = {
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{"environ","ENVIRONMENT",pr_nop, sr_nop, 11, ENV, LNx, PO|UNLIMITED},
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{"esp", "ESP", pr_esp, sr_kstk_esp, 8, 0, LNX, TO|RIGHT},
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{"etime", "ELAPSED", pr_etime, sr_nop, 11, 0, U98, ET|RIGHT}, /* was 7 wide */
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{"etimes", "ELAPSED", pr_etimes, sr_nop, 7, 0, BSD, ET|RIGHT}, /* FreeBSD */
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{"euid", "EUID", pr_euid, sr_euid, 5, 0, LNX, ET|RIGHT},
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{"euser", "EUSER", pr_euser, sr_euser, 8, USR, LNX, ET|USER},
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{"f", "F", pr_flag, sr_flags, 1, 0, XXX, ET|RIGHT}, /*flags*/
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@ -617,6 +617,10 @@ static const char *parse_bsd_option(void){
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trace("c true command name\n");
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bsd_c_option = 1;
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break;
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// case 'd':
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// trace("d FreeBSD-style tree\n");
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// forest_type = 'f';
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// break;
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case 'e':
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trace("e environment\n");
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bsd_e_option = 1;
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5
ps/ps.1
5
ps/ps.1
@ -1008,6 +1008,11 @@ elapsed time since the process was started,
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in\ the form\ [[DD\-]hh:]mm:ss.
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T}
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etimes ELAPSED T{
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elapsed time since the process was started,
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in\ seconds.
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T}
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euid EUID T{
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effective user\ ID (alias\ \fBuid\fR).
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T}
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2
top.1
2
top.1
@ -1067,7 +1067,7 @@ Later, if you wish to monitor all tasks again in the \*(CW, re-issue this
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command but just press <Enter> at the prompt.
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.TP 7
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\ \ \'\fBV\fR' :\fIForest-View-Mode \fR toggle \fR
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\ \ \'\fBV\fR' :\fIForest-View-Mode\fR toggle \fR
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In this mode, processes are reordered according to their parents and
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the layout of the COMMAND column resembles that of a tree.
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In forest view mode it is still possible to toggle between program
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119
top.c
119
top.c
@ -155,8 +155,6 @@ static WIN_t *Curwin;
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and/or that are simply more efficiently handled as globals
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[ 'Frames_...' (plural) stuff persists beyond 1 frame ]
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[ or are used in response to async signals received ! ] */
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// Frames_endpgm set by sig_endpgm(), no need to unset
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static volatile int Frames_endpgm; // time to quit this shit
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// Frames_paused set by sig_paused(), unset by pause_pgm()
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static volatile int Frames_paused; // become a paused background job
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// Frames_resize set by do_key() & sig_resize(), unset by calibrate_fields()
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@ -512,12 +510,32 @@ static void pause_pgm (void) {
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} // end: pause_pgm
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/*
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* Catches all remaining signals not otherwise handled */
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static void sig_abexit (int sig) NORETURN;
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static void sig_abexit (int sig) {
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static const char *ab_msg =
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"\n\tsignal %d (%s) was caught by %s, please"
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"\n\tsee http://www.debian.org/Bugs/Reporting\n";
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sigset_t ss;
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sigfillset(&ss);
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sigprocmask(SIG_BLOCK, &ss, NULL);
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bye_bye(fmtmk(ab_msg, sig, signal_number_to_name(sig), Myname));
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} // end: sig_abexit
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/*
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* Catches:
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* SIGALRM, SIGHUP, SIGINT, SIGPIPE, SIGQUIT and SIGTERM */
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static void sig_endpgm (int dont_care_sig) NORETURN;
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static void sig_endpgm (int dont_care_sig) {
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sigset_t ss;
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sigfillset(&ss);
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sigprocmask(SIG_BLOCK, &ss, NULL);
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bye_bye(NULL);
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(void)dont_care_sig;
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Frames_endpgm = 1;
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} // end: sig_endpgm
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@ -525,7 +543,7 @@ static void sig_endpgm (int dont_care_sig) {
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* Catches:
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* SIGTSTP, SIGTTIN and SIGTTOU */
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static void sig_paused (int dont_care_sig) {
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(void)dont_care_sig;
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(void)dont_care_sig;
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Frames_paused = 1;
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} // end: sig_paused
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@ -671,11 +689,21 @@ static int show_pmt (const char *str) {
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* Show a special coordinate message, in support of scrolling */
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static inline void show_scroll (void) {
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char tmp[SMLBUFSIZ];
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int totpflgs = Curwin->totpflgs;
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int begpflgs = Curwin->begpflg + 1;
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#ifndef USE_X_COLHDR
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if (CHKw(Curwin, Show_HICOLS)) {
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totpflgs -= 2;
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if (ENUpos(Curwin, Curwin->rc.sortindx) < Curwin->begpflg) begpflgs -= 2;
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}
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#endif
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if (1 > totpflgs) totpflgs = 1;
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if (1 > begpflgs) begpflgs = 1;
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snprintf(tmp, sizeof(tmp)
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, "scroll coordinates: y = %d/%d (tasks), x = %d/%d (fields)"
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, Curwin->begtask + 1, Frame_maxtask
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, Curwin->begpflg + 1, Curwin->totpflgs);
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, begpflgs, totpflgs);
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PUTT("%s%s %.*s%s", tg2(0, Msg_row), Caps_off, Screen_cols - 2, tmp, Cap_clr_eol);
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putp(tg2(0, Msg_row));
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} // end: show_scroll
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@ -1392,6 +1420,9 @@ static void calibrate_fields (void) {
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if (!Fieldstab[f].fmts) { ++varcolcnt; w->varcolsz += strlen(h) - 1; }
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s = scat(s, h);
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}
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#ifndef USE_X_COLHDR
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if (X_XON == w->procflgs[i - 1]) --i;
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#endif
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/* establish the final maxpflgs and prepare to grow the variable column
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heading(s) via varcolsz - it may be a fib if their pflags weren't
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@ -1407,13 +1438,16 @@ static void calibrate_fields (void) {
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for (i = w->totpflgs - 1; -1 < i; i--) {
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f = w->pflgsall[i];
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#ifndef USE_X_COLHDR
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if (P_MAXPFLGS < f) continue;
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if (P_MAXPFLGS < f) { w->endpflg = i; continue; }
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#endif
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h = Fieldstab[f].head;
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if (Screen_cols <= ((int)(s - w->columnhdr) + (int)strlen(h))) break;
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s = scat(s, h);
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w->endpflg = i;
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}
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#ifndef USE_X_COLHDR
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if (X_XOF == w->pflgsall[w->endpflg]) ++w->endpflg;
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#endif
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/* finally, we can build the true run-time columns header, format any
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variable column heading(s), if they're really being displayed, and
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@ -1453,13 +1487,16 @@ static void calibrate_fields (void) {
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if (Screen_cols > (int)strlen(w->columnhdr)) w->eolcap = Caps_endline;
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else w->eolcap = Caps_off;
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#endif
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// to show only 'busy' processes requires L_stat...
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// with forest view mode, we'll need tgid & ppid...
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if (CHKw(w, Show_FOREST)) Frames_libflags |= L_status;
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// for 'busy' only processes, we'll need pcpu (utime & stime)...
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if (!CHKw(w, Show_IDLEPS)) Frames_libflags |= L_stat;
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// we must also accommodate an out of view sort field...
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f = w->rc.sortindx;
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Frames_libflags |= Fieldstab[f].lflg;
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if (P_CMD == f && CHKw(w, Show_CMDLIN)) Frames_libflags |= L_CMDLINE;
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} // end: VIZISw(w)
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if (Rc.mode_altscr) w = w->next;
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} while (w != Curwin);
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@ -1713,14 +1750,16 @@ always:
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Fieldstab[P_CPN].fmts = fmts_cpu;
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}
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Cpu_pmax = 99.0;
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Cpu_pmax = 99.9;
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Fieldstab[P_CPU].fmts = " %#4.1f ";
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if (Rc.mode_irixps && Cpu_tot > 1 && !Thread_mode) {
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Cpu_pmax = 999.0;
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Fieldstab[P_CPU].fmts = "%#5.1f ";
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Cpu_pmax = 100.0 * Cpu_tot;
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if (Cpu_tot > 10) {
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Cpu_pmax = 99999.0;
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if (Cpu_pmax > 99999.0) Cpu_pmax = 99999.0;
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Fieldstab[P_CPU].fmts = "%5.0f ";
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} else {
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if (Cpu_pmax > 999.9) Cpu_pmax = 999.9;
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Fieldstab[P_CPU].fmts = "%#5.1f ";
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}
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}
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@ -2022,6 +2061,7 @@ static void sysinfo_refresh (int forced) {
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* No matter what *they* say, we handle the really really BIG and
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* IMPORTANT stuff upon which all those lessor functions depend! */
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static void before (char *me) {
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struct sigaction sa;
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int i;
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// setup our program name -- big!
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@ -2051,6 +2091,28 @@ static void before (char *me) {
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memcpy(HHash_one, HHash_nul, sizeof(HHash_nul));
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memcpy(HHash_two, HHash_nul, sizeof(HHash_nul));
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#endif
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// lastly, establish a robust signals environment
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sigemptyset(&sa.sa_mask);
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sa.sa_flags = SA_RESTART;
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for (i = SIGRTMAX + 1; i; i--) {
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switch (i) {
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case SIGALRM: case SIGHUP: case SIGINT:
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case SIGPIPE: case SIGQUIT: case SIGTERM:
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sa.sa_handler = sig_endpgm;
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break;
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case SIGTSTP: case SIGTTIN: case SIGTTOU:
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sa.sa_handler = sig_paused;
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break;
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case SIGCONT: case SIGWINCH:
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sa.sa_handler = sig_resize;
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break;
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default:
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sa.sa_handler = sig_abexit;
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break;
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}
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sigaction(i, &sa, NULL);
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}
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} // end: before
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@ -2707,11 +2769,11 @@ static void keys_global (int ch) {
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if (Secure_mode) {
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show_msg(err_secure);
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} else {
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int sig, pid;
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int pid, sig = SIGTERM;
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char *str;
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if (-1 < (pid = get_int("pid to signal/kill"))) {
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sig = signal_name_to_number(
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linein(fmtmk("Send pid %d signal [%d/sigterm]", pid, SIGTERM)));
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if (-1 == sig) sig = SIGTERM;
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str = linein(fmtmk("Send pid %d signal [%d/sigterm]", pid, SIGTERM));
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if (*str) sig = signal_name_to_number(str);
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if (0 < sig && kill(pid, sig))
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show_msg(fmtmk("\aFailed signal pid '%d' with '%d': %s"
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, pid, sig, strerror(errno)));
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@ -2872,6 +2934,13 @@ static void keys_task (int ch) {
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if (VIZCHKw(w)) {
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TOGw(w, Show_HICOLS);
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capsmk(w);
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#ifndef USE_X_COLHDR
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if (ENUpos(w, w->rc.sortindx) < w->begpflg) {
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if (CHKw(w, Show_HICOLS)) w->begpflg += 2;
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else w->begpflg -= 2;
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if (0 > w->begpflg) w->begpflg = 0;
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}
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#endif
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}
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break;
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case 'y':
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@ -3579,7 +3648,6 @@ static void frame_make (void) {
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int i, scrlins;
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// deal with potential signals since the last time around...
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if (Frames_endpgm) bye_bye(NULL);
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if (Frames_paused) pause_pgm();
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if (Frames_resize) zap_fieldstab();
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@ -3635,7 +3703,6 @@ static void frame_make (void) {
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/*
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* duh... */
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int main (int dont_care_argc, char **argv) {
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struct sigaction sa;
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(void)dont_care_argc;
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before(*argv);
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// +-------------+
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@ -3645,22 +3712,6 @@ int main (int dont_care_argc, char **argv) {
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whack_terminal(); // > onions etc. <
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wins_stage_2(); // as bottom slice
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// +-------------+
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sigemptyset(&sa.sa_mask);
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sa.sa_flags = SA_RESTART;
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sa.sa_handler = sig_endpgm;
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sigaction(SIGALRM, &sa, NULL);
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if (!Batch) sigaction(SIGHUP, &sa, NULL);
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sigaction(SIGINT, &sa, NULL);
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sigaction(SIGPIPE, &sa, NULL);
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sigaction(SIGQUIT, &sa, NULL);
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sigaction(SIGTERM, &sa, NULL);
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sa.sa_handler = sig_paused;
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sigaction(SIGTSTP, &sa, NULL);
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sigaction(SIGTTIN, &sa, NULL);
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sigaction(SIGTTOU, &sa, NULL);
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sa.sa_handler = sig_resize;
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sigaction(SIGCONT, &sa, NULL);
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sigaction(SIGWINCH, &sa, NULL);
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for (;;) {
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struct timeval tv;
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@ -3686,7 +3737,7 @@ int main (int dont_care_argc, char **argv) {
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/* note: above select might have been interrupted by some signal
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in which case the return code would have been -1 and an
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integer (volatile) switch set. that in turn will cause
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frame_make() to deal with it as its first responsiblity
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frame_make() to deal with it if we survived the handler
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*/
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}
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}
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2
top.h
2
top.h
@ -335,6 +335,7 @@ typedef struct WIN_t {
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/* else fieldscur char already has high bit on! */ \
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} while (0)
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#define ENUviz(w,E) (NULL != memchr((w)->procflgs, E, (w)->maxpflgs))
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#define ENUpos(w,E) ((int)((FLG_t*)memchr((w)->pflgsall, E, (w)->totpflgs) - (w)->pflgsall))
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/* Special Section: end ------------------------------------------ */
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@ -621,6 +622,7 @@ typedef struct WIN_t {
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//atic void bye_bye (const char *str);
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//atic void error_exit (const char *str);
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//atic void pause_pgm (void);
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//atic void sig_abexit (int sig);
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//atic void sig_endpgm (int dont_care_sig);
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//atic void sig_paused (int dont_care_sig);
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//atic void sig_resize (int dont_care_sig);
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