88 lines
3 KiB
Text
88 lines
3 KiB
Text
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/* ---------------------------- progress output ---------------------- */
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#include <stdlib.h>
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#include <stdio.h>
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#include "progress.h"
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FILE *fp=NULL; /* output stream for progress info */
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time_t printinterval = 10; /* approx. seconds between printouts, 1.. */
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/* initialization of progress output, fname="<fileID>","<filename>","-" */
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int ini_progress(char *fname){
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int fd;
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if (fp) { fclose(fp); fp=NULL; }
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if (fname) if (fname[0]) {
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fd=atoi(fname);
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if(fd>255 || fname[((fd>99)?3:((fd>9)?2:1))]) fd=-1; /* be sure */
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if (fname[0]=='-' && fname[1]==0) { fp=stdout; }
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#ifdef __USE_POSIX
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else if (fd>0) { fp=fdopen(fd,"w"); } /* not sure that "w" is ok ???? */
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#endif
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else { fp=fopen(fname,"w");if(!fp)fp=fopen(fname,"a"); }
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if (!fp) {
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fprintf(stderr,"could not open %s for progress output\n",fname);
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return -1; /* no success */
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}
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}
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/* fprintf(stderr,"# progress: fd=%d\n",fileno(fp)); */
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return 0; /* no error */
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}
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progress_counter_t *open_progress(int maxcount, const char *name){
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progress_counter_t *pc;
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pc = (progress_counter_t*) malloc( sizeof(progress_counter_t) );
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if (!pc) return 0; /* nonfatal */
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pc->starttime = time(NULL);
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pc->maxcount = maxcount;
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pc->numskip = 0;
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pc->lastprintcount = -1;
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pc->name = name;
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pc->lastprinttime = pc->starttime;
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return pc;
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}
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/* free counter */
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int close_progress(progress_counter_t *counter){
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if (counter) free(counter);
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return 0;
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}
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/* progress meter output
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* only 1output/10s, + estimated endtime (test on pixelfields)
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* ToDo: to stderr by default? remove subprogress, ini_progress? rm_progress?
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* test on tcl
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*/
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int progress(int counter, progress_counter_t *pc){
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/* we try to save computing time, so we skip early */
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if ((!fp) || counter - pc->lastprintcount <= pc->numskip) return 0;
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{
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char cr='\n';
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time_t now = time(NULL);
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#if 0 /* debugging */
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if (counter)
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fprintf(fp," progress %s %3d / %d time %d skip %d\n",
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pc->name,counter,pc->maxcount,(int)(now - pc->starttime),
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pc->numskip); fflush(fp);
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#endif
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if (5*(now - pc->lastprinttime) < 2*printinterval
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&& counter - pc->lastprintcount >= pc->numskip) { /* save for tests */
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if (pc->numskip < 1024) pc->numskip += pc->numskip+1;
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}
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if (3*(now - pc->lastprinttime) < 2*printinterval ) {
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return 0; /* to early for printing */
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}
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if (2*(now - pc->lastprinttime) > 3*printinterval ) {
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pc->numskip >>= 1; /* to late for printing */
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}
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if (fileno(fp)<3) cr='\r'; /* may be choosen in ini? */
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if (counter)
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fprintf(fp," progress %s %5d / %d time[s] %5d / %5d (skip=%d)%c",
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pc->name,counter,pc->maxcount,
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(int)(now - pc->starttime), /* time gone since start */
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(int)(now - pc->starttime)*pc->maxcount/(counter), /* estimated */
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pc->numskip, cr);
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fflush(fp);
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pc->lastprintcount=counter;
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pc->lastprinttime=now;
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}
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return 0; /* no error */
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}
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/* --------------------- end of progress output ---------------------- */
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