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| author | Marc G. Fournier <scrappy@hub.org> | 1996-09-16 05:52:51 +0000 |
|---|---|---|
| committer | Marc G. Fournier <scrappy@hub.org> | 1996-09-16 05:52:51 +0000 |
| commit | 33dccad831a7b48f9b27cf4a45809d0af1b7fd6d (patch) | |
| tree | 8deecbd950d6dfb02758a5bcf5b40ace86b8cb39 /src | |
| parent | bbebcb125e4f0593608bc4d9419ffc7933da147c (diff) | |
| download | postgresql-33dccad831a7b48f9b27cf4a45809d0af1b7fd6d.tar.gz postgresql-33dccad831a7b48f9b27cf4a45809d0af1b7fd6d.zip | |
enable PQ_NOTIFY_PATCH in config.h
Diffstat (limited to 'src')
| -rw-r--r-- | src/include/config.h | 15 |
1 files changed, 15 insertions, 0 deletions
diff --git a/src/include/config.h b/src/include/config.h index d75c21961ee..ede1a8184d6 100644 --- a/src/include/config.h +++ b/src/include/config.h @@ -77,5 +77,20 @@ query commands and causes a SIGSEGV trying to execute commands without plan. */ #define FUNC_UTIL_PATCH +/* + +Async notifies received while a backend is in the middle of a begin/end +transaction block are lost by libpq when the final end command is issued. + +The bug is in the routine PQexec of libpq. The routine throws away any +message from the backend when a message of type 'C' is received. This +type of message is sent when the result of a portal query command with +no tuples is returned. Unfortunately this is the case of the end command. +As all async notification are sent only when the transaction is finished, +if they are received in the middle of a transaction they are lost in the +libpq library. I added some tracing code to PQexec and this is the output: + +*/ +#define PQ_NOTIFY_PATCH #endif /* CONFIG_H */ |