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Remove pg_dump/parallel.c's useless "aborting" flag.

This was effectively dead code, since the places that tested it could notbe reached after we entered the on-exit-cleanup routine that would set it.It seems to have been a leftover from a design in which error abort wouldtry to send fresh commands to the workers --- a design which could neverhave worked reliably, of course. Since the flag is not cross-platform, itcomplicates reasoning about the code's behavior, which we could do without.Although this is effectively just cosmetic, back-patch anyway, becausethere are some actual bugs in the vicinity of this behavior.Discussion: <15583.1464462418@sss.pgh.pa.us>

1 parent6b3094c commit210981aCopy full SHA for 210981a

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src/bin/pg_dump
- parallel.c

1 file changed

-28

lines changed

`‎src/bin/pg_dump/parallel.c`

Lines changed: 6 additions & 28 deletions

Original file line number	Diff line number	Diff line change
`@@ -95,11 +95,7 @@ static intpiperead(int s, char *buf, int len);`
`95`	`95`
`96`	`96`	`#else/* !WIN32 */`
`97`	`97`
`98`		`-/*`
`99`		`- * Variables for handling signals. aborting is only ever used in the master,`
`100`		`- * the workers just need wantAbort.`
`101`		`- */`
`102`		`-staticboolaborting= false;`
	`98`	`+/* Signal handler flag */`
`103`	`99`	`staticvolatilesig_atomic_twantAbort=0;`
`104`	`100`
`105`	`101`	`/* Non-Windows implementation of pipe access */`
`@@ -301,14 +297,6 @@ archive_close_connection(int code, void *arg)`
`301`	`297`	`if (si->AHX)`
`302`	`298`	`DisconnectDatabase(si->AHX);`
`303`	`299`
`304`		`-#ifndefWIN32`
`305`		`-`
`306`		`-/*`
`307`		`- * Setting aborting to true shuts off error/warning messages that`
`308`		`- * are no longer useful once we start killing workers.`
`309`		`- */`
`310`		`-aborting= true;`
`311`		`-#endif`
`312`	`300`	`ShutdownWorkersHard(si->pstate);`
`313`	`301`	`}`
`314`	`302`	`else`
`@@ -1178,11 +1166,9 @@ select_loop(int maxFd, fd_set *workerset)`
`1178`	`1166`	`/*`
`1179`	`1167`	`* If we Ctrl-C the master process, it's likely that we interrupt`
`1180`	`1168`	`* select() here. The signal handler will set wantAbort == true and`
`1181`		`- * the shutdown journey starts from here. Note that we'll come back`
`1182`		`- * here later when we tell all workers to terminate and read their`
`1183`		`- * responses. But then we have aborting set to true.`
	`1169`	`+ * the shutdown journey starts from here.`
`1184`	`1170`	`*/`
`1185`		`-if (wantAbort&& !aborting)`
	`1171`	`+if (wantAbort)`
`1186`	`1172`	`exit_horribly(modulename,"terminated by user\n");`
`1187`	`1173`
`1188`	`1174`	`if (i<0&&errno==EINTR)`
`@@ -1279,17 +1265,9 @@ sendMessageToWorker(ParallelState pstate, int worker, const char str)`
`1279`	`1265`
`1280`	`1266`	`if (pipewrite(pstate->parallelSlot[worker].pipeWrite,str,len)!=len)`
`1281`	`1267`	`{`
`1282`		`-/*`
`1283`		`- * If we're already aborting anyway, don't care if we succeed or not.`
`1284`		`- * The child might have gone already. (XXX but if we're aborting`
`1285`		`- * already, why are we here at all?)`
`1286`		`- */`
`1287`		`-#ifndefWIN32`
`1288`		`-if (!aborting)`
`1289`		`-#endif`
`1290`		`-exit_horribly(modulename,`
`1291`		`-"could not write to the communication channel: %s\n",`
`1292`		`-strerror(errno));`
	`1268`	`+exit_horribly(modulename,`
	`1269`	`+"could not write to the communication channel: %s\n",`
	`1270`	`+strerror(errno));`
`1293`	`1271`	`}`
`1294`	`1272`	`}`
`1295`	`1273`

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Commit210981a

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`‎src/bin/pg_dump/parallel.c`

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