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With the introduction of PgStat_Kind PgStat_Single_Reset_Type, PgStat_Shared_Reset_Target don't make sense anymore. Replace them with PgStat_Kind. Instead of having dedicated reset functions for different kinds of stats, use two generic helper routines (one to reset all stats of a kind, one to reset one stats entry). A number of reset functions were named pgstat_reset_*_counter(), despite affecting multiple counters. The generic helper routines get rid of pgstat_reset_single_counter(), pgstat_reset_subscription_counter(). Rename pgstat_reset_slru_counter(), pgstat_reset_replslot_counter() to pgstat_reset_slru(), pgstat_reset_replslot() respectively, and have them only deal with a single SLRU/slot. Resetting all SLRUs/slots goes through the generic pgstat_reset_of_kind(). Previously pg_stat_reset_replication_slot() used SearchNamedReplicationSlot() to check if a slot exists. API wise it seems better to move that to pgstat_replslot.c. This is done separately from the - quite large - shared memory statistics patch to make review easier. Reviewed-By: Kyotaro Horiguchi <horikyota.ntt@gmail.com> Discussion: https://postgr.es/m/20220404041516.cctrvpadhuriawlq@alap3.anarazel.de |
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