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Commitd9dc2b4

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Code review for isolationtester changes.
Fix a few oversights in38f8bdc:don't leak memory in run_permutation(), remember when we've issueda cancel rather than issuing another one every 10ms,fix some typos in comments.
1 parent07d25a9 commitd9dc2b4

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+22
-13
lines changed

1 file changed

+22
-13
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‎src/test/isolation/isolationtester.c‎

Lines changed: 22 additions & 13 deletions
Original file line numberDiff line numberDiff line change
@@ -478,9 +478,6 @@ run_permutation(TestSpec *testspec, int nsteps, Step **steps)
478478
Step**waiting;
479479
Step**errorstep;
480480

481-
waiting=malloc(sizeof(Step*)*testspec->nsessions);
482-
errorstep=malloc(sizeof(Step*)*testspec->nsessions);
483-
484481
/*
485482
* In dry run mode, just display the permutation in the same format used
486483
* by spec files, and return.
@@ -494,6 +491,9 @@ run_permutation(TestSpec *testspec, int nsteps, Step **steps)
494491
return;
495492
}
496493

494+
waiting=malloc(sizeof(Step*)*testspec->nsessions);
495+
errorstep=malloc(sizeof(Step*)*testspec->nsessions);
496+
497497
printf("\nstarting permutation:");
498498
for (i=0;i<nsteps;i++)
499499
printf(" %s",steps[i]->name);
@@ -548,14 +548,15 @@ run_permutation(TestSpec *testspec, int nsteps, Step **steps)
548548
* Check whether the session that needs to perform the next step
549549
* is still blocked on an earlier step. If so, wait for it to finish.
550550
*
551-
* In older versions of this tool,when allowed precisely one session
552-
* to be waiting at a time. If we reached a stepwhich required that
551+
*(In older versions of this tool,we allowed precisely one session
552+
* to be waiting at a time. If we reached a stepthat required that
553553
* session to execute the next command, we would declare the whole
554-
* permutation invalid, cancel everything, and move on to the next one.
555-
* Unfortunately, that made it impossible to test the deadlock detector
556-
* using this framework unless the numebr of processes involved in the
557-
* deadlock was precisely two. We now assume that if we reach a step
558-
* that is still blocked, we need to wait for it to unblock itself.
554+
* permutation invalid, cancel everything, and move on to the next
555+
* one. Unfortunately, that made it impossible to test the deadlock
556+
* detector using this framework, unless the number of processes
557+
* involved in the deadlock was precisely two. We now assume that if
558+
* we reach a step that is still blocked, we need to wait for it to
559+
* unblock itself.)
559560
*/
560561
for (w=0;w<nwaiting;++w)
561562
{
@@ -689,6 +690,9 @@ run_permutation(TestSpec *testspec, int nsteps, Step **steps)
689690
}
690691
PQclear(res);
691692
}
693+
694+
free(waiting);
695+
free(errorstep);
692696
}
693697

694698
/*
@@ -786,12 +790,17 @@ try_complete_step(Step *step, int flags)
786790
if (td>60*USECS_PER_SEC&& !canceled)
787791
{
788792
PGcancel*cancel=PQgetCancel(conn);
789-
charbuf[256];
790793

791-
if (cancel!=NULL&& !PQcancel(cancel,buf,sizeof(buf)))
792-
fprintf(stderr,"PQcancel failed: %s\n",buf);
793794
if (cancel!=NULL)
795+
{
796+
charbuf[256];
797+
798+
if (PQcancel(cancel,buf,sizeof(buf)))
799+
canceled= true;
800+
else
801+
fprintf(stderr,"PQcancel failed: %s\n",buf);
794802
PQfreeCancel(cancel);
803+
}
795804
}
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797806
/*

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