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Document #ifdef's from backend/access subdirs so that we know what 

features(?) are available
This commit is contained in:
Marc G. Fournier 1996-10-18 05:22:24 +00:00
parent 2ecb7e5e2c
commit 6c3dff4245
1 changed files with 50 additions and 31 deletions
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81
src/include/config.h
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@ -184,50 +184,69 @@
#define DEADLOCK_TIMEOUT 60
/* Fixes use of indexes infunctions */
#define INDEXSCAN_PATCH
/* found in src/backend/utils/adt/date.c */
/* #define DATEDEBUG */
/* found in src/backend/utils/adt/datetimes.c */
/* #define USE_SHORT_YEAR */
/* #define AMERICAN_STYLE */
/*----------------------------------------*/
/* found in src/backend/utils/adt/float.c */
/*------------------------------------------------------*/
/* defining unsafe floats's will make float4 and float8 */
/* ops faster at the cost of safety, of course! */
/*------------------------------------------------------*/
/*
* defining unsafe floats's will make float4 and float8
* ops faster at the cost of safety, of course!
*/
/* #define UNSAFE_FLOATS */
/*
There is a bug in the function executor. The backend crashes while trying to
execute an sql function containing an utility command (create, notify, ...).
The bug is part in the planner, which returns a number of plans different
than the number of commands if there are utility commands in the query, and
in part in the function executor which assumes that all commands are normal
query commands and causes a SIGSEGV trying to execute commands without plan.
*/
* There is a bug in the function executor. The backend crashes while trying to
* execute an sql function containing an utility command (create, notify, ...).
* The bug is part in the planner, which returns a number of plans different
* than the number of commands if there are utility commands in the query, and
* in part in the function executor which assumes that all commands are normal
* 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:
*/
* 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
/* Debug #defines */
/* #define IPORTAL_DEBUG /* access/common/printtup.c */
/* #define HEAPDEBUGALL /* access/heap/heapam.c */
/* #define ISTRATDEBUG /* access/index/istrat.c */
/* #define FASTBUILD_DEBUG /* access/nbtree/nbtsort.c */
#define RTDEBUG /* access/rtree/rtree.c */
#define GISTDEBUG /* access/gist/gist.c */
/* The following don't have any apparent purpose, but are in the
* code. someday, will take them out altogether, but for now,
* document them here
*/
/* #define OMIT_PARTIAL_INDEX /* access/hash/hash.c */
/* #define PERFECT_MMGR /* access/hash/hash.c */
/* #define PERFECT_MEM /* access/hash/hashscan.c */
/* #define NO_BUFFERISVALID /* access/heap/heapam.c */
/* Undocumented "features"? */
#define FASTBUILD /* access/nbtree/nbtsort.c */
#endif /* CONFIG_H */