PostgreSQL Source Code  git master
pg_rusage.c File Reference
#include "postgres.h"
#include <unistd.h>
#include "utils/pg_rusage.h"
Include dependency graph for pg_rusage.c:

Go to the source code of this file.

Functions

void pg_rusage_init (PGRUsage *ru0)
 
const char * pg_rusage_show (const PGRUsage *ru0)
 

Function Documentation

◆ pg_rusage_init()

void pg_rusage_init ( PGRUsage ru0)

Definition at line 27 of file pg_rusage.c.

28 {
29  getrusage(RUSAGE_SELF, &ru0->ru);
30  gettimeofday(&ru0->tv, NULL);
31 }
int getrusage(int who, struct rusage *rusage)
#define RUSAGE_SELF
Definition: resource.h:9
struct rusage ru
Definition: pg_rusage.h:25
struct timeval tv
Definition: pg_rusage.h:24
int gettimeofday(struct timeval *tp, void *tzp)

References getrusage(), gettimeofday(), PGRUsage::ru, RUSAGE_SELF, and PGRUsage::tv.

Referenced by copy_table_data(), do_analyze_rel(), heap_vacuum_rel(), PerformWalRecovery(), pg_rusage_show(), reindex_index(), ReindexRelationConcurrently(), and tuplesort_begin_common().

◆ pg_rusage_show()

const char* pg_rusage_show ( const PGRUsage ru0)

Definition at line 40 of file pg_rusage.c.

41 {
42  static char result[100];
43  PGRUsage ru1;
44 
45  pg_rusage_init(&ru1);
46 
47  if (ru1.tv.tv_usec < ru0->tv.tv_usec)
48  {
49  ru1.tv.tv_sec--;
50  ru1.tv.tv_usec += 1000000;
51  }
52  if (ru1.ru.ru_stime.tv_usec < ru0->ru.ru_stime.tv_usec)
53  {
54  ru1.ru.ru_stime.tv_sec--;
55  ru1.ru.ru_stime.tv_usec += 1000000;
56  }
57  if (ru1.ru.ru_utime.tv_usec < ru0->ru.ru_utime.tv_usec)
58  {
59  ru1.ru.ru_utime.tv_sec--;
60  ru1.ru.ru_utime.tv_usec += 1000000;
61  }
62 
63  snprintf(result, sizeof(result),
64  _("CPU: user: %d.%02d s, system: %d.%02d s, elapsed: %d.%02d s"),
65  (int) (ru1.ru.ru_utime.tv_sec - ru0->ru.ru_utime.tv_sec),
66  (int) (ru1.ru.ru_utime.tv_usec - ru0->ru.ru_utime.tv_usec) / 10000,
67  (int) (ru1.ru.ru_stime.tv_sec - ru0->ru.ru_stime.tv_sec),
68  (int) (ru1.ru.ru_stime.tv_usec - ru0->ru.ru_stime.tv_usec) / 10000,
69  (int) (ru1.tv.tv_sec - ru0->tv.tv_sec),
70  (int) (ru1.tv.tv_usec - ru0->tv.tv_usec) / 10000);
71 
72  return result;
73 }
#define _(x)
Definition: elog.c:90
void pg_rusage_init(PGRUsage *ru0)
Definition: pg_rusage.c:27
#define snprintf
Definition: port.h:238
struct timeval ru_utime
Definition: resource.h:14
struct timeval ru_stime
Definition: resource.h:15

References _, pg_rusage_init(), PGRUsage::ru, rusage::ru_stime, rusage::ru_utime, snprintf, and PGRUsage::tv.

Referenced by copy_table_data(), do_analyze_rel(), dumptuples(), heap_vacuum_rel(), inittapes(), mergeruns(), PerformWalRecovery(), reindex_index(), ReindexRelationConcurrently(), tuplesort_free(), tuplesort_performsort(), and tuplesort_puttuple_common().