diff options
| author | Bruce Momjian <bruce@momjian.us> | 2008-03-20 17:55:15 +0000 |
|---|---|---|
| committer | Bruce Momjian <bruce@momjian.us> | 2008-03-20 17:55:15 +0000 |
| commit | 4e228447aa42c3d74ad513a11d1d00c1997fd116 (patch) | |
| tree | 7e7ad88aa3fc6ba4fb9752e9a0191f9a806fd13b /src/backend/utils/misc | |
| parent | 27dfc11d676efdcc2f22be254bea9d92b854b673 (diff) | |
Make source code READMEs more consistent. Add CVS tags to all README files.
Diffstat (limited to 'src/backend/utils/misc')
| -rw-r--r-- | src/backend/utils/misc/README | 15 |
1 files changed, 9 insertions, 6 deletions
diff --git a/src/backend/utils/misc/README b/src/backend/utils/misc/README index 3113218853f..e2ae67afd92 100644 --- a/src/backend/utils/misc/README +++ b/src/backend/utils/misc/README @@ -1,7 +1,7 @@ -$PostgreSQL: pgsql/src/backend/utils/misc/README,v 1.9 2008/03/16 16:42:44 mha Exp $ +$PostgreSQL: pgsql/src/backend/utils/misc/README,v 1.10 2008/03/20 17:55:15 momjian Exp $ - -GUC IMPLEMENTATION NOTES +Guc Implementation Notes +======================== The GUC (Grand Unified Configuration) module implements configuration variables of multiple types (currently boolean, enum, int, float, and string). @@ -9,7 +9,8 @@ Variable settings can come from various places, with a priority ordering determining which setting is used. -PER-VARIABLE HOOKS +Per-Variable Hooks +------------------ Each variable known to GUC can optionally have an assign_hook and/or a show_hook to provide customized behavior. Assign hooks are used to @@ -69,7 +70,8 @@ This hook allows variable-specific computation of the value displayed by SHOW. -SAVING/RESTORING GUC VARIABLE VALUES +Saving/Restoring Guc Variable Values +------------------------------------ Prior values of configuration variables must be remembered in order to deal with several special cases: RESET (a/k/a SET TO DEFAULT), rollback of SET @@ -208,7 +210,8 @@ with doit = false so that the value is validated, but no derived state is changed. -STRING MEMORY HANDLING +String Memory Handling +---------------------- String option values are allocated with strdup, not with the pstrdup/palloc mechanisms. We would need to keep them in a permanent |