database/postgres
1
0
Fork 0
mirror of https://github.com/postgres/postgres.git synced 2025-08-24 09:27:52 +03:00
Code Activity

Add a feature for automatic initialization and finalization of dynamically

Browse Source 
loaded libraries: call functions _PG_init() and _PG_fini() if the library
defines such symbols.  Hence we no longer need to specify an initialization
function in preload_libraries: we can assume that the library used the
_PG_init() convention, instead.  This removes one source of pilot error
in use of preloaded libraries.  Original patch by Ralf Engelschall,
preload_libraries changes by me.
This commit is contained in:
Tom Lane
2006-08-08 19:15:09 +00:00
parent e00664da48
commit b09bfcaa57
12 changed files with 179 additions and 239 deletions
Download Patch File Download Diff File Expand all files Collapse all files

40
src/pl/tcl/pltcl.c
View File

@@ -2,7 +2,7 @@
* pltcl.c - PostgreSQL support for Tcl as
* procedural language (PL)
*
* $PostgreSQL: pgsql/src/pl/tcl/pltcl.c,v 1.105 2006/06/16 18:42:24 tgl Exp $
* $PostgreSQL: pgsql/src/pl/tcl/pltcl.c,v 1.106 2006/08/08 19:15:09 tgl Exp $
*
**********************************************************************/
@@ -120,14 +120,13 @@ static pltcl_proc_desc *pltcl_current_prodesc = NULL;
/**********************************************************************
* Forward declarations
**********************************************************************/
static void pltcl_init_all(void);
static void pltcl_init_interp(Tcl_Interp *interp);
static void pltcl_init_load_unknown(Tcl_Interp *interp);
Datum pltcl_call_handler(PG_FUNCTION_ARGS);
Datum pltclu_call_handler(PG_FUNCTION_ARGS);
void pltcl_init(void);
void _PG_init(void);
static void pltcl_init_all(void);
static void pltcl_init_interp(Tcl_Interp *interp);
static void pltcl_init_load_unknown(Tcl_Interp *interp);
static Datum pltcl_func_handler(PG_FUNCTION_ARGS);
@@ -182,17 +181,15 @@ perm_fmgr_info(Oid functionId, FmgrInfo *finfo)
fmgr_info_cxt(functionId, finfo, TopMemoryContext);
}
/**********************************************************************
* pltcl_init() - Initialize all that's safe to do in the postmaster
/*
* _PG_init() - library load-time initialization
*
* DO NOT make this static --- it has to be callable by preload
**********************************************************************/
* DO NOT make this static nor change its name!
*/
void
pltcl_init(void)
_PG_init(void)
{
/************************************************************
* Do initialization only once
************************************************************/
/* Be sure we do initialization only once (should be redundant now) */
if (pltcl_pm_init_done)
return;
@@ -236,20 +233,15 @@ pltcl_init(void)
/**********************************************************************
* pltcl_init_all() - Initialize all
*
* This does initialization that can't be done in the postmaster, and
* hence is not safe to do at library load time.
**********************************************************************/
static void
pltcl_init_all(void)
{
/************************************************************
* Execute postmaster-startup safe initialization
************************************************************/
if (!pltcl_pm_init_done)
pltcl_init();
/************************************************************
* Any other initialization that must be done each time a new
* backend starts:
* - Try to load the unknown procedure from pltcl_modules
* Try to load the unknown procedure from pltcl_modules
************************************************************/
if (!pltcl_be_init_done)
{