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Commit9f44d71

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Fix printing last progress report line in client programs.
A number of client programs have a "--progress" option that when printingto a TTY, updates the current line by printing a '\r' and overwriting it.After the last line, '\n' needs to be printed to move the cursor to thenext line. pg_basebackup and pgbench got this right, but pg_rewind andpg_checksums were slightly wrong. pg_rewind printed the newline to stdoutinstead of stderr, and pg_checksums printed the newline even when notprinting to a TTY. Fix them, and also add a 'finished' argument topg_basebackup's progress_report() function, to keep it consistent withthe other programs.Backpatch to v12. pg_rewind's newline was broken with the logging changesin commitcc8d415 in v12, and pg_checksums was introduced in v12.Discussion:https://www.postgresql.org/message-id/82b539e5-ae33-34b0-1aee-22b3379fd3eb@iki.fi
1 parent29bd2cb commit9f44d71

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4 files changed

+41
-35
lines changed

4 files changed

+41
-35
lines changed

‎src/bin/pg_basebackup/pg_basebackup.c

Lines changed: 20 additions & 18 deletions
Original file line numberDiff line numberDiff line change
@@ -143,7 +143,8 @@ static PQExpBuffer recoveryconfcontents = NULL;
143143
/* Function headers */
144144
staticvoidusage(void);
145145
staticvoidverify_dir_is_empty_or_create(char*dirname,bool*created,bool*found);
146-
staticvoidprogress_report(inttablespacenum,constchar*filename,boolforce);
146+
staticvoidprogress_report(inttablespacenum,constchar*filename,boolforce,
147+
boolfinished);
147148

148149
staticvoidReceiveTarFile(PGconn*conn,PGresult*res,intrownum);
149150
staticvoidReceiveAndUnpackTarFile(PGconn*conn,PGresult*res,intrownum);
@@ -706,11 +707,15 @@ verify_dir_is_empty_or_create(char *dirname, bool *created, bool *found)
706707
* Print a progress report based on the global variables. If verbose output
707708
* is enabled, also print the current file name.
708709
*
709-
* Progress report is written at maximum once per second, unless the
710-
* force parameter is set to true.
710+
* Progress report is written at maximum once per second, unless the force
711+
* parameter is set to true.
712+
*
713+
* If finished is set to true, this is the last progress report. The cursor
714+
* is moved to the next line.
711715
*/
712716
staticvoid
713-
progress_report(inttablespacenum,constchar*filename,boolforce)
717+
progress_report(inttablespacenum,constchar*filename,
718+
boolforce,boolfinished)
714719
{
715720
intpercent;
716721
chartotaldone_str[32];
@@ -721,7 +726,7 @@ progress_report(int tablespacenum, const char *filename, bool force)
721726
return;
722727

723728
now=time(NULL);
724-
if (now==last_progress_report&& !force)
729+
if (now==last_progress_report&& !force&& !finished)
725730
return;/* Max once per second */
726731

727732
last_progress_report=now;
@@ -792,10 +797,11 @@ progress_report(int tablespacenum, const char *filename, bool force)
792797
totaldone_str,totalsize_str,percent,
793798
tablespacenum,tablespacecount);
794799

795-
if (isatty(fileno(stderr)))
796-
fprintf(stderr,"\r");
797-
else
798-
fprintf(stderr,"\n");
800+
/*
801+
* Stay on the same line if reporting to a terminal and we're not done
802+
* yet.
803+
*/
804+
fprintf(stderr, (!finished&&isatty(fileno(stderr))) ?"\r" :"\n");
799805
}
800806

801807
staticint32
@@ -1355,9 +1361,9 @@ ReceiveTarFile(PGconn *conn, PGresult *res, int rownum)
13551361
}
13561362
}
13571363
totaldone+=r;
1358-
progress_report(rownum,filename, false);
1364+
progress_report(rownum,filename, false, false);
13591365
}/* while (1) */
1360-
progress_report(rownum,filename, true);
1366+
progress_report(rownum,filename, true, false);
13611367

13621368
if (copybuf!=NULL)
13631369
PQfreemem(copybuf);
@@ -1614,7 +1620,7 @@ ReceiveAndUnpackTarFile(PGconn *conn, PGresult *res, int rownum)
16141620
exit(1);
16151621
}
16161622
totaldone+=r;
1617-
progress_report(rownum,filename, false);
1623+
progress_report(rownum,filename, false, false);
16181624

16191625
current_len_left-=r;
16201626
if (current_len_left==0&&current_padding==0)
@@ -1630,7 +1636,7 @@ ReceiveAndUnpackTarFile(PGconn *conn, PGresult *res, int rownum)
16301636
}
16311637
}/* continuing data in existing file */
16321638
}/* loop over all data blocks */
1633-
progress_report(rownum,filename, true);
1639+
progress_report(rownum,filename, true, false);
16341640

16351641
if (file!=NULL)
16361642
{
@@ -2011,11 +2017,7 @@ BaseBackup(void)
20112017
}/* Loop over all tablespaces */
20122018

20132019
if (showprogress)
2014-
{
2015-
progress_report(PQntuples(res),NULL, true);
2016-
if (isatty(fileno(stderr)))
2017-
fprintf(stderr,"\n");/* Need to move to next line */
2018-
}
2020+
progress_report(PQntuples(res),NULL, true, true);
20192021

20202022
PQclear(res);
20212023

‎src/bin/pg_checksums/pg_checksums.c

Lines changed: 7 additions & 7 deletions
Original file line numberDiff line numberDiff line change
@@ -124,7 +124,7 @@ static const struct exclude_list_item skip[] = {
124124
* src/bin/pg_basebackup/pg_basebackup.c.
125125
*/
126126
staticvoid
127-
progress_report(boolforce)
127+
progress_report(boolfinished)
128128
{
129129
intpercent;
130130
chartotal_size_str[32];
@@ -134,7 +134,7 @@ progress_report(bool force)
134134
Assert(showprogress);
135135

136136
now=time(NULL);
137-
if (now==last_progress_report&& !force)
137+
if (now==last_progress_report&& !finished)
138138
return;/* Max once per second */
139139

140140
/* Save current time */
@@ -161,8 +161,11 @@ progress_report(bool force)
161161
(int)strlen(current_size_str),current_size_str,total_size_str,
162162
percent);
163163

164-
/* Stay on the same line if reporting to a terminal */
165-
fprintf(stderr,isatty(fileno(stderr)) ?"\r" :"\n");
164+
/*
165+
* Stay on the same line if reporting to a terminal and we're not done
166+
* yet.
167+
*/
168+
fprintf(stderr, (!finished&&isatty(fileno(stderr))) ?"\r" :"\n");
166169
}
167170

168171
staticbool
@@ -623,10 +626,7 @@ main(int argc, char *argv[])
623626
(void)scan_directory(DataDir,"pg_tblspc", false);
624627

625628
if (showprogress)
626-
{
627629
progress_report(true);
628-
fprintf(stderr,"\n");/* Need to move to next line */
629-
}
630630

631631
printf(_("Checksum operation completed\n"));
632632
printf(_("Files scanned: %s\n"),psprintf(INT64_FORMAT,files));

‎src/bin/pg_rewind/pg_rewind.c

Lines changed: 13 additions & 9 deletions
Original file line numberDiff line numberDiff line change
@@ -359,7 +359,6 @@ main(int argc, char **argv)
359359
executeFileMap();
360360

361361
progress_report(true);
362-
printf("\n");
363362

364363
if (showprogress)
365364
pg_log_info("creating backup label and updating control file");
@@ -452,11 +451,14 @@ sanityChecks(void)
452451
/*
453452
* Print a progress report based on the fetch_size and fetch_done variables.
454453
*
455-
* Progress report is written at maximum once per second, unless the
456-
* force parameter is set to true.
454+
* Progress report is written at maximum once per second, except that the
455+
* last progress report is always printed.
456+
*
457+
* If finished is set to true, this is the last progress report. The cursor
458+
* is moved to the next line.
457459
*/
458460
void
459-
progress_report(boolforce)
461+
progress_report(boolfinished)
460462
{
461463
staticpg_time_tlast_progress_report=0;
462464
intpercent;
@@ -468,7 +470,7 @@ progress_report(bool force)
468470
return;
469471

470472
now=time(NULL);
471-
if (now==last_progress_report&& !force)
473+
if (now==last_progress_report&& !finished)
472474
return;/* Max once per second */
473475

474476
last_progress_report=now;
@@ -498,10 +500,12 @@ progress_report(bool force)
498500
fprintf(stderr,_("%*s/%s kB (%d%%) copied"),
499501
(int)strlen(fetch_size_str),fetch_done_str,fetch_size_str,
500502
percent);
501-
if (isatty(fileno(stderr)))
502-
fprintf(stderr,"\r");
503-
else
504-
fprintf(stderr,"\n");
503+
504+
/*
505+
* Stay on the same line if reporting to a terminal and we're not done
506+
* yet.
507+
*/
508+
fprintf(stderr, (!finished&&isatty(fileno(stderr))) ?"\r" :"\n");
505509
}
506510

507511
/*

‎src/bin/pg_rewind/pg_rewind.h

Lines changed: 1 addition & 1 deletion
Original file line numberDiff line numberDiff line change
@@ -49,7 +49,7 @@ extern XLogRecPtr readOneRecord(const char *datadir, XLogRecPtr ptr,
4949
inttliIndex);
5050

5151
/* in pg_rewind.c */
52-
externvoidprogress_report(boolforce);
52+
externvoidprogress_report(boolfinished);
5353

5454
/* in timeline.c */
5555
externTimeLineHistoryEntry*rewind_parseTimeLineHistory(char*buffer,

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