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author | Daniel Baumann <daniel.baumann@progress-linux.org> | 2024-04-16 19:46:48 +0000 |
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committer | Daniel Baumann <daniel.baumann@progress-linux.org> | 2024-04-16 19:46:48 +0000 |
commit | 311bcfc6b3acdd6fd152798c7f287ddf74fa2a98 (patch) | |
tree | 0ec307299b1dada3701e42f4ca6eda57d708261e /src/backend/utils/activity/pgstat_archiver.c | |
parent | Initial commit. (diff) | |
download | postgresql-15-upstream.tar.xz postgresql-15-upstream.zip |
Adding upstream version 15.4.upstream/15.4upstream
Signed-off-by: Daniel Baumann <daniel.baumann@progress-linux.org>
Diffstat (limited to 'src/backend/utils/activity/pgstat_archiver.c')
-rw-r--r-- | src/backend/utils/activity/pgstat_archiver.c | 111 |
1 files changed, 111 insertions, 0 deletions
diff --git a/src/backend/utils/activity/pgstat_archiver.c b/src/backend/utils/activity/pgstat_archiver.c new file mode 100644 index 0000000..851726f --- /dev/null +++ b/src/backend/utils/activity/pgstat_archiver.c @@ -0,0 +1,111 @@ +/* ------------------------------------------------------------------------- + * + * pgstat_archiver.c + * Implementation of archiver statistics. + * + * This file contains the implementation of archiver statistics. It is kept + * separate from pgstat.c to enforce the line between the statistics access / + * storage implementation and the details about individual types of + * statistics. + * + * Copyright (c) 2001-2022, PostgreSQL Global Development Group + * + * IDENTIFICATION + * src/backend/utils/activity/pgstat_archiver.c + * ------------------------------------------------------------------------- + */ + +#include "postgres.h" + +#include "utils/pgstat_internal.h" +#include "utils/timestamp.h" + + +/* + * Report archiver statistics + */ +void +pgstat_report_archiver(const char *xlog, bool failed) +{ + PgStatShared_Archiver *stats_shmem = &pgStatLocal.shmem->archiver; + TimestampTz now = GetCurrentTimestamp(); + + pgstat_begin_changecount_write(&stats_shmem->changecount); + + if (failed) + { + ++stats_shmem->stats.failed_count; + memcpy(&stats_shmem->stats.last_failed_wal, xlog, + sizeof(stats_shmem->stats.last_failed_wal)); + stats_shmem->stats.last_failed_timestamp = now; + } + else + { + ++stats_shmem->stats.archived_count; + memcpy(&stats_shmem->stats.last_archived_wal, xlog, + sizeof(stats_shmem->stats.last_archived_wal)); + stats_shmem->stats.last_archived_timestamp = now; + } + + pgstat_end_changecount_write(&stats_shmem->changecount); +} + +/* + * Support function for the SQL-callable pgstat* functions. Returns + * a pointer to the archiver statistics struct. + */ +PgStat_ArchiverStats * +pgstat_fetch_stat_archiver(void) +{ + pgstat_snapshot_fixed(PGSTAT_KIND_ARCHIVER); + + return &pgStatLocal.snapshot.archiver; +} + +void +pgstat_archiver_reset_all_cb(TimestampTz ts) +{ + PgStatShared_Archiver *stats_shmem = &pgStatLocal.shmem->archiver; + + /* see explanation above PgStatShared_Archiver for the reset protocol */ + LWLockAcquire(&stats_shmem->lock, LW_EXCLUSIVE); + pgstat_copy_changecounted_stats(&stats_shmem->reset_offset, + &stats_shmem->stats, + sizeof(stats_shmem->stats), + &stats_shmem->changecount); + stats_shmem->stats.stat_reset_timestamp = ts; + LWLockRelease(&stats_shmem->lock); +} + +void +pgstat_archiver_snapshot_cb(void) +{ + PgStatShared_Archiver *stats_shmem = &pgStatLocal.shmem->archiver; + PgStat_ArchiverStats *stat_snap = &pgStatLocal.snapshot.archiver; + PgStat_ArchiverStats *reset_offset = &stats_shmem->reset_offset; + PgStat_ArchiverStats reset; + + pgstat_copy_changecounted_stats(stat_snap, + &stats_shmem->stats, + sizeof(stats_shmem->stats), + &stats_shmem->changecount); + + LWLockAcquire(&stats_shmem->lock, LW_SHARED); + memcpy(&reset, reset_offset, sizeof(stats_shmem->stats)); + LWLockRelease(&stats_shmem->lock); + + /* compensate by reset offsets */ + if (stat_snap->archived_count == reset.archived_count) + { + stat_snap->last_archived_wal[0] = 0; + stat_snap->last_archived_timestamp = 0; + } + stat_snap->archived_count -= reset.archived_count; + + if (stat_snap->failed_count == reset.failed_count) + { + stat_snap->last_failed_wal[0] = 0; + stat_snap->last_failed_timestamp = 0; + } + stat_snap->failed_count -= reset.failed_count; +} |