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PG_FINALLY

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This gives an alternative way of catching exceptions, for the common
case where the cleanup code is the same in the error and non-error
cases.  So instead of

    PG_TRY();
    {
        ... code that might throw ereport(ERROR) ...
    }
    PG_CATCH();
    {
        cleanup();
	PG_RE_THROW();
    }
    PG_END_TRY();
    cleanup();

one can write

    PG_TRY();
    {
        ... code that might throw ereport(ERROR) ...
    }
    PG_FINALLY();
    {
        cleanup();
    }
    PG_END_TRY();

Discussion: https://www.postgresql.org/message-id/flat/95a822c3-728b-af0e-d7e5-71890507ae0c%402ndquadrant.com
This commit is contained in:
Peter Eisentraut
2019-11-01 11:09:52 +01:00
parent 7302514088
commit 604bd36711
32 changed files with 91 additions and 245 deletions
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20
src/backend/utils/adt/xml.c
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@ -1193,13 +1193,11 @@ xml_pstrdup_and_free(xmlChar *str)
{
result = pstrdup((char *) str);
}
PG_CATCH();
PG_FINALLY();
{
xmlFree(str);
PG_RE_THROW();
}
PG_END_TRY();
xmlFree(str);
}
else
result = NULL;
@ -3866,19 +3864,14 @@ xml_xmlnodetoxmltype(xmlNodePtr cur, PgXmlErrorContext *xmlerrcxt)
result = xmlBuffer_to_xmltype(buf);
}
PG_CATCH();
PG_FINALLY()
{
if (nodefree)
nodefree(cur_copy);
if (buf)
xmlBufferFree(buf);
PG_RE_THROW();
}
PG_END_TRY();
if (nodefree)
nodefree(cur_copy);
xmlBufferFree(buf);
}
else
{
@ -3893,13 +3886,11 @@ xml_xmlnodetoxmltype(xmlNodePtr cur, PgXmlErrorContext *xmlerrcxt)
result = (xmltype *) cstring_to_text(escaped);
pfree(escaped);
}
PG_CATCH();
PG_FINALLY();
{
xmlFree(str);
PG_RE_THROW();
}
PG_END_TRY();
xmlFree(str);
}
return result;
@ -4734,16 +4725,13 @@ XmlTableGetValue(TableFuncScanState *state, int colnum,
state->typioparams[colnum],
typmod);
}
PG_CATCH();
PG_FINALLY();
{
if (xpathobj != NULL)
xmlXPathFreeObject(xpathobj);
PG_RE_THROW();
}
PG_END_TRY();
xmlXPathFreeObject(xpathobj);
return result;
#else
NO_XML_SUPPORT();