@@ -154,43 +154,52 @@ set_history_gucs()
154154mixedStruct * var = (mixedStruct * )guc_vars [i ];
155155const char * name = var -> generic .name ;
156156
157+ if (var -> generic .flags & GUC_CUSTOM_PLACEHOLDER )
158+ continue ;
159+
157160if (!strcmp (name ,"pg_stat_wait.history_size" ))
158161{
159162history_size_found = true;
160163var -> integer .variable = & collector_hdr -> historySize ;
164+ collector_hdr -> historySize = 5000 ;
161165}
162166else if (!strcmp (name ,"pg_stat_wait.history_period" ))
163167{
164168history_period_found = true;
165169var -> integer .variable = & collector_hdr -> historyPeriod ;
170+ collector_hdr -> historyPeriod = 10 ;
166171}
167172else if (!strcmp (name ,"pg_stat_wait.history_skip_latch" ))
168173{
169174history_skip_latch_found = true;
170175var -> _bool .variable = & collector_hdr -> historySkipLatch ;
176+ collector_hdr -> historySkipLatch = false;
171177}
172178}
173179
174180if (!history_size_found )
175181DefineCustomIntVariable ("pg_stat_wait.history_size" ,
176182"Sets size of waits history." ,NULL ,
177183& collector_hdr -> historySize ,5000 ,100 ,INT_MAX ,
178- PGC_SUSET ,GUC_CUSTOM_PLACEHOLDER ,
184+ PGC_SUSET ,0 ,
179185shmem_int_guc_check_hook ,NULL ,NULL );
180186
181187if (!history_period_found )
182188DefineCustomIntVariable ("pg_stat_wait.history_period" ,
183189"Sets period of waits history sampling." ,NULL ,
184190& collector_hdr -> historyPeriod ,10 ,1 ,INT_MAX ,
185- PGC_SUSET ,GUC_CUSTOM_PLACEHOLDER ,
191+ PGC_SUSET ,0 ,
186192shmem_int_guc_check_hook ,NULL ,NULL );
187193
188194if (!history_skip_latch_found )
189195DefineCustomBoolVariable ("pg_stat_wait.history_skip_latch" ,
190196"Skip latch events in waits history" ,NULL ,
191197& collector_hdr -> historySkipLatch , false,
192- PGC_SUSET ,GUC_CUSTOM_PLACEHOLDER ,
198+ PGC_SUSET ,0 ,
193199shmem_bool_guc_check_hook ,NULL ,NULL );
200+
201+ if (history_size_found || history_period_found || history_skip_latch_found )
202+ ProcessConfigFile (PGC_SIGHUP );
194203}
195204
196205/*
