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| author | Marc G. Fournier <scrappy@hub.org> | 1998-07-09 03:29:11 +0000 |
|---|---|---|
| committer | Marc G. Fournier <scrappy@hub.org> | 1998-07-09 03:29:11 +0000 |
| commit | a0659e3e2c79be49feb4aa527d823c71d7bcaf07 (patch) | |
| tree | 7dc58e872cdfce999dd0848000fcd3f2e4edbafa /src/man | |
| parent | 8bf61820f033d7df0e89433a0272d7b2567378b8 (diff) | |
| download | postgresql-a0659e3e2c79be49feb4aa527d823c71d7bcaf07.tar.gz | |
From: Tom Lane <tgl@sss.pgh.pa.us>
Making PQrequestCancel safe to call in a signal handler turned out to be
much easier than I feared. So here are the diffs.
Some notes:
* I modified the postmaster's packet "iodone" callback interface to allow
the callback routine to return a continue-or-drop-connection return
code; this was necessary to allow the connection to be closed after
receiving a Cancel, rather than proceeding to launch a new backend...
Being a neatnik, I also made the iodone proc have a typechecked
parameter list.
* I deleted all code I could find that had to do with OOB.
* I made some edits to ensure that all signals mentioned in the code
are referred to symbolically not by numbers ("SIGUSR2" not "2").
I think Bruce may have already done at least some of the same edits;
I hope that merging these patches is not too painful.
Diffstat (limited to 'src/man')
| -rw-r--r-- | src/man/listen.l | 6 | ||||
| -rw-r--r-- | src/man/notify.l | 11 |
2 files changed, 9 insertions, 8 deletions
diff --git a/src/man/listen.l b/src/man/listen.l index d18d3fdd7f..49801408f7 100644 --- a/src/man/listen.l +++ b/src/man/listen.l @@ -1,6 +1,6 @@ .\" This is -*-nroff-*- .\" XXX standard disclaimer belongs here.... -.\" $Header: /cvsroot/pgsql/src/man/Attic/listen.l,v 1.6 1998/06/24 13:21:27 momjian Exp $ +.\" $Header: /cvsroot/pgsql/src/man/Attic/listen.l,v 1.7 1998/07/09 03:29:09 scrappy Exp $ .TH "LISTEN" SQL 03/12/94 PostgreSQL PostgreSQL .SH NAME listen - listen for notification on a relation @@ -21,9 +21,7 @@ is cleared. .PP This event notification is performed through the Libpq protocol and frontend application interface. The application program -must explicitly poll a Libpq global variable, -.IR PQAsyncNotifyWaiting , -and call the routine +must call the routine .IR PQnotifies in order to find out the name of the class to which a given notification corresponds. If this code is not included in diff --git a/src/man/notify.l b/src/man/notify.l index 50f44b442e..26b3de6f6f 100644 --- a/src/man/notify.l +++ b/src/man/notify.l @@ -1,6 +1,6 @@ .\" This is -*-nroff-*- .\" XXX standard disclaimer belongs here.... -.\" $Header: /cvsroot/pgsql/src/man/Attic/notify.l,v 1.4 1998/06/24 13:21:27 momjian Exp $ +.\" $Header: /cvsroot/pgsql/src/man/Attic/notify.l,v 1.5 1998/07/09 03:29:11 scrappy Exp $ .TH "NOTIFY" SQL 11/05/95 PostgreSQL PostgreSQL .SH NAME notify - signal all frontends and backends listening on a class @@ -32,11 +32,14 @@ does is indicate that some backend wishes its peers to examine .IR class_name in some application-specific way. .PP +In fact, +.IR class_name +need not be the name of an SQL class at all. It is best thought of +as a condition name that the application programmer selects. +.PP This event notification is performed through the Libpq protocol and frontend application interface. The application program -must explicitly poll a Libpq global variable, -.IR PQAsyncNotifyWaiting , -and call the routine +must call the routine .IR PQnotifies in order to find out the name of the class to which a given notification corresponds. If this code is not included in |