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Error out if waiting on socket readiness without a specified socket. 

Previously we just ignored such an attempt, but that seems to serve no
purpose but making things harder to debug.

Discussion: 20160114143931.GG10941@awork2.anarazel.de
    20151230173734.hx7jj2fnwyljfqek@alap3.anarazel.de
Reviewed-By: Robert Haas
This commit is contained in:
Andres Freund 2016-03-18 11:43:59 -07:00
parent fad0f9d8c9
commit 6bc4d95fcc
2 changed files with 10 additions and 8 deletions
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9
src/backend/port/unix_latch.c
View File

@ -226,12 +226,13 @@ WaitLatchOrSocket(volatile Latch *latch, int wakeEvents, pgsocket sock,
int hifd;
#endif
/* Ignore WL_SOCKET_* events if no valid socket is given */
if (sock == PGINVALID_SOCKET)
wakeEvents &= ~(WL_SOCKET_READABLE | WL_SOCKET_WRITEABLE);
Assert(wakeEvents != 0); /* must have at least one wake event */
/* waiting for socket readiness without a socket indicates a bug */
if (sock == PGINVALID_SOCKET &&
(wakeEvents & (WL_SOCKET_READABLE | WL_SOCKET_WRITEABLE)) != 0)
elog(ERROR, "cannot wait on socket event without a socket");
if ((wakeEvents & WL_LATCH_SET) && latch->owner_pid != MyProcPid)
elog(ERROR, "cannot wait on a latch owned by another process");

9
src/backend/port/win32_latch.c
View File

@ -113,12 +113,13 @@ WaitLatchOrSocket(volatile Latch *latch, int wakeEvents, pgsocket sock,
int result = 0;
int pmdeath_eventno = 0;
/* Ignore WL_SOCKET_* events if no valid socket is given */
if (sock == PGINVALID_SOCKET)
wakeEvents &= ~(WL_SOCKET_READABLE | WL_SOCKET_WRITEABLE);
Assert(wakeEvents != 0); /* must have at least one wake event */
/* waiting for socket readiness without a socket indicates a bug */
if (sock == PGINVALID_SOCKET &&
(wakeEvents & (WL_SOCKET_READABLE | WL_SOCKET_WRITEABLE)) != 0)
elog(ERROR, "cannot wait on socket event without a socket");
if ((wakeEvents & WL_LATCH_SET) && latch->owner_pid != MyProcPid)
elog(ERROR, "cannot wait on a latch owned by another process");