void
_PG_init(void)
{
int **bitmask_ptr;
const int **version_ptr;
/*
* Set up a shared bitmask variable telling which Python version(s) are
* loaded into this process's address space. If there's more than one, we
* cannot call into libpython for fear of causing crashes. But postpone
* the actual failure for later, so that operations like pg_restore can
* load more than one plpython library so long as they don't try to do
* anything much with the language.
*/
bitmask_ptr = (int **) find_rendezvous_variable("plpython_version_bitmask");
if (!(*bitmask_ptr)) /* am I the first? */
*bitmask_ptr = &plpython_version_bitmask;
/* Retain pointer to the agreed-on shared variable ... */
plpython_version_bitmask_ptr = *bitmask_ptr;
/* ... and announce my presence */
*plpython_version_bitmask_ptr |= (1 << PY_MAJOR_VERSION);
/*
* This should be safe even in the presence of conflicting plpythons, and
* it's necessary to do it here for the next error to be localized.
*/
pg_bindtextdomain(TEXTDOMAIN);
/*
* We used to have a scheme whereby PL/Python would fail immediately if
* loaded into a session in which a conflicting libpython is already
* present. We don't like to do that anymore, but it seems possible that
* a plpython library adhering to the old convention is present in the
* session, in which case we have to fail. We detect an old library if
* plpython_python_version is already defined but the indicated version
* isn't reflected in plpython_version_bitmask. Otherwise, set the
* variable so that the right thing happens if an old library is loaded
* later.
*/
version_ptr = (const int **) find_rendezvous_variable("plpython_python_version");
if (!(*version_ptr))
*version_ptr = &plpython_python_version;
else
{
if ((*plpython_version_bitmask_ptr & (1 << **version_ptr)) == 0)
ereport(FATAL,
(errmsg("Python major version mismatch in session"),
errdetail("This session has previously used Python major version %d, and it is now attempting to use Python major version %d.",
**version_ptr, plpython_python_version),
errhint("Start a new session to use a different Python major version.")));
}
/* Register SIGINT/SIGTERM handler for python */
prev_cancel_pending_hook = cancel_pending_hook;
cancel_pending_hook = PLy_handle_cancel_interrupt;
pg_bindtextdomain(TEXTDOMAIN);
}
/*
* _PG_init() - library load-time initialization
*
* DO NOT make this static nor change its name!
*/
void
_PG_init(void)
{
/* Be sure we do initialization only once (should be redundant now) */
static bool inited = false;
if (inited)
return;
pg_bindtextdomain(TEXTDOMAIN);
DefineCustomEnumVariable("plpgsql.variable_conflict",
gettext_noop("Sets handling of conflicts between PL/pgSQL variable names and table column names."),
NULL,
&plpgsql_variable_conflict,
PLPGSQL_RESOLVE_ERROR,
variable_conflict_options,
PGC_SUSET, 0,
NULL, NULL, NULL);
EmitWarningsOnPlaceholders("plpgsql");
plpgsql_HashTableInit();
RegisterXactCallback(plpgsql_xact_cb, NULL);
RegisterSubXactCallback(plpgsql_subxact_cb, NULL);
/* Set up a rendezvous point with optional instrumentation plugin */
plugin_ptr = (PLpgSQL_plugin **) find_rendezvous_variable("PLpgSQL_plugin");
inited = true;
}
/*
* _PG_init
*
* Load point of library.
*/
void
_PG_init(void)
{
/* Set up a rendezvous point with instrumentation plugin */
PLpgSQL_plugin ** var_ptr = (PLpgSQL_plugin **)
find_rendezvous_variable("PLpgSQL_plugin");
*var_ptr = &plugin_funcs;
}
/*
* _PG_init() - library load-time initialization
*
* DO NOT make this static nor change its name!
*/
void
_PG_init(void)
{
/* Be sure we do initialization only once (should be redundant now) */
static bool inited = false;
if (inited)
return;
plpgsql_HashTableInit();
RegisterXactCallback(plpgsql_xact_cb, NULL);
RegisterSubXactCallback(plpgsql_subxact_cb, NULL);
/* Set up a rendezvous point with optional instrumentation plugin */
plugin_ptr = (PLpgSQL_plugin **) find_rendezvous_variable("PLpgSQL_plugin");
inited = true;
}
void _PG_init(void)
{
PLpgSQL_plugin ** var_ptr = (PLpgSQL_plugin **) find_rendezvous_variable( "PLpgSQL_plugin" );
/* Be sure we do initialization only once (should be redundant now) */
static bool inited = false;
if (inited)
return;
*var_ptr = &plugin_funcs;
#if PG_VERSION_NUM >= 90100
DefineCustomBoolVariable("plpgsql.enable_lint",
"when is true, then plpgsql_lint is active",
NULL,
&plpgsql_lint_enable,
true,
PGC_SUSET, 0,
NULL, NULL, NULL);
#else
DefineCustomBoolVariable("plpgsql.enable_lint",
"when is true, then plpgsql_lint is active",
NULL,
&plpgsql_lint_enable,
true,
PGC_SUSET, 0,
NULL, NULL);
#endif
inited = true;
}