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Overview
Comment:Have the shell ".timer on" command cause the shell to report wall-clock time for each query (as well as user and system CPU time).
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Timelines: family | ancestors | shell-wall-clock
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SHA1: 5530cdc4857f7410ce6ddf53ae94c75426e19eee
User & Date: dan 2013-10-30 12:30:05.137
Context
2013-10-30
12:30
Have the shell ".timer on" command cause the shell to report wall-clock time for each query (as well as user and system CPU time). (Leaf check-in: 5530cdc485 user: dan tags: shell-wall-clock)
2013-10-28
22:33
Formatting improvements to the WHERE-clause constraint display in the wheretrace debugging logic. (check-in: 3a9e3ed94b user: drh tags: trunk)
Changes
Unified Diff Ignore Whitespace Patch
Changes to src/shell.c.
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#if !defined(_WIN32) && !defined(WIN32) && !defined(_WRS_KERNEL) \
 && !defined(__minux)
#include <sys/time.h>
#include <sys/resource.h>

/* Saved resource information for the beginning of an operation */
static struct rusage sBegin;























/*
** Begin timing an operation
*/
static void beginTimer(void){
  if( enableTimer ){

    getrusage(RUSAGE_SELF, &sBegin);
  }
}

/* Return the difference of two time_structs in seconds */
static double timeDiff(struct timeval *pStart, struct timeval *pEnd){
  return (pEnd->tv_usec - pStart->tv_usec)*0.000001 + 
         (double)(pEnd->tv_sec - pStart->tv_sec);
}

/*
** Print the timing results.
*/
static void endTimer(void){
  if( enableTimer ){
    struct rusage sEnd;
    getrusage(RUSAGE_SELF, &sEnd);
    printf("CPU Time: user %f sys %f\n",
       timeDiff(&sBegin.ru_utime, &sEnd.ru_utime),
       timeDiff(&sBegin.ru_stime, &sEnd.ru_stime));


  }
}

#define BEGIN_TIMER beginTimer()
#define END_TIMER endTimer()
#define HAS_TIMER 1









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#if !defined(_WIN32) && !defined(WIN32) && !defined(_WRS_KERNEL) \
 && !defined(__minux)
#include <sys/time.h>
#include <sys/resource.h>

/* Saved resource information for the beginning of an operation */
static struct TimerData {
  struct rusage sRusage;
  sqlite3_int64 iTime;
} sBegin;

/*
** Return the current-time according to the xCurrentTimeInt64() method 
** of the default VFS (in ms). Use the result of xCurrentTime() to 
** calculate an equivalent value if the VFS is too old for 
** xCurrentTimeInt64().
*/
static sqlite3_int64 vfsCurrentTime64(void){
  sqlite3_int64 iRet;
  sqlite3_vfs *pVfs = sqlite3_vfs_find(0);
  if( pVfs->iVersion>=2 ){
    pVfs->xCurrentTimeInt64(pVfs, &iRet);
  }else{
    double t;
    pVfs->xCurrentTime(pVfs, &t);
    iRet = (sqlite3_int64)(t * 86400000.0);
  }
  return iRet;
}

/*
** Begin timing an operation
*/
static void beginTimer(void){
  if( enableTimer ){
    sBegin.iTime = vfsCurrentTime64();
    getrusage(RUSAGE_SELF, &sBegin.sRusage);
  }
}

/* Return the difference of two time_structs in seconds */
static double timeDiff(struct timeval *pStart, struct timeval *pEnd){
  return (pEnd->tv_usec - pStart->tv_usec)*0.000001 + 
         (double)(pEnd->tv_sec - pStart->tv_sec);
}

/*
** Print the timing results.
*/
static void endTimer(void){
  if( enableTimer ){
    struct rusage sEnd;
    getrusage(RUSAGE_SELF, &sEnd);
    printf("CPU Time: user %f sys %f wall %f\n",
       timeDiff(&sBegin.sRusage.ru_utime, &sEnd.ru_utime),
       timeDiff(&sBegin.sRusage.ru_stime, &sEnd.ru_stime),
       (double)(vfsCurrentTime64() - sBegin.iTime) / 1000.0
    );
  }
}

#define BEGIN_TIMER beginTimer()
#define END_TIMER endTimer()
#define HAS_TIMER 1
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