134 lines
3.2 KiB
C
134 lines
3.2 KiB
C
/* ----------
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* backend_progress.c
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*
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* Command progress reporting infrastructure.
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*
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* Copyright (c) 2001-2023, PostgreSQL Global Development Group
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*
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* src/backend/utils/activity/backend_progress.c
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* ----------
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*/
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#include "postgres.h"
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#include "port/atomics.h" /* for memory barriers */
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#include "utils/backend_progress.h"
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#include "utils/backend_status.h"
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/*-----------
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* pgstat_progress_start_command() -
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*
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* Set st_progress_command (and st_progress_command_target) in own backend
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* entry. Also, zero-initialize st_progress_param array.
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*-----------
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*/
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void
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pgstat_progress_start_command(ProgressCommandType cmdtype, Oid relid)
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{
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volatile PgBackendStatus *beentry = MyBEEntry;
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if (!beentry || !pgstat_track_activities)
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return;
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PGSTAT_BEGIN_WRITE_ACTIVITY(beentry);
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beentry->st_progress_command = cmdtype;
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beentry->st_progress_command_target = relid;
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MemSet(&beentry->st_progress_param, 0, sizeof(beentry->st_progress_param));
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PGSTAT_END_WRITE_ACTIVITY(beentry);
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}
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/*-----------
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* pgstat_progress_update_param() -
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*
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* Update index'th member in st_progress_param[] of own backend entry.
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*-----------
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*/
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void
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pgstat_progress_update_param(int index, int64 val)
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{
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volatile PgBackendStatus *beentry = MyBEEntry;
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Assert(index >= 0 && index < PGSTAT_NUM_PROGRESS_PARAM);
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if (!beentry || !pgstat_track_activities)
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return;
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PGSTAT_BEGIN_WRITE_ACTIVITY(beentry);
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beentry->st_progress_param[index] = val;
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PGSTAT_END_WRITE_ACTIVITY(beentry);
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}
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/*-----------
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* pgstat_progress_incr_param() -
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*
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* Increment index'th member in st_progress_param[] of own backend entry.
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*-----------
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*/
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void
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pgstat_progress_incr_param(int index, int64 incr)
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{
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volatile PgBackendStatus *beentry = MyBEEntry;
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Assert(index >= 0 && index < PGSTAT_NUM_PROGRESS_PARAM);
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if (!beentry || !pgstat_track_activities)
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return;
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PGSTAT_BEGIN_WRITE_ACTIVITY(beentry);
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beentry->st_progress_param[index] += incr;
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PGSTAT_END_WRITE_ACTIVITY(beentry);
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}
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/*-----------
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* pgstat_progress_update_multi_param() -
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*
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* Update multiple members in st_progress_param[] of own backend entry.
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* This is atomic; readers won't see intermediate states.
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*-----------
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*/
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void
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pgstat_progress_update_multi_param(int nparam, const int *index,
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const int64 *val)
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{
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volatile PgBackendStatus *beentry = MyBEEntry;
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int i;
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if (!beentry || !pgstat_track_activities || nparam == 0)
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return;
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PGSTAT_BEGIN_WRITE_ACTIVITY(beentry);
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for (i = 0; i < nparam; ++i)
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{
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Assert(index[i] >= 0 && index[i] < PGSTAT_NUM_PROGRESS_PARAM);
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beentry->st_progress_param[index[i]] = val[i];
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}
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PGSTAT_END_WRITE_ACTIVITY(beentry);
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}
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/*-----------
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* pgstat_progress_end_command() -
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*
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* Reset st_progress_command (and st_progress_command_target) in own backend
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* entry. This signals the end of the command.
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*-----------
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*/
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void
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pgstat_progress_end_command(void)
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{
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volatile PgBackendStatus *beentry = MyBEEntry;
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if (!beentry || !pgstat_track_activities)
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return;
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if (beentry->st_progress_command == PROGRESS_COMMAND_INVALID)
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return;
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PGSTAT_BEGIN_WRITE_ACTIVITY(beentry);
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beentry->st_progress_command = PROGRESS_COMMAND_INVALID;
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beentry->st_progress_command_target = InvalidOid;
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PGSTAT_END_WRITE_ACTIVITY(beentry);
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}
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