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Bug#50057: 'SHOW PROFILE CPU' port for Windows.

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Patch contributed by Alex Budovski.
This commit is contained in:
Vladislav Vaintroub 2010-02-05 13:57:15 +01:00
parent a45ea00b32
commit e6cba2be35
2 changed files with 45 additions and 0 deletions
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43
sql/sql_profile.cc
View File

@ -134,6 +134,26 @@ int make_profile_table_for_show(THD *thd, ST_SCHEMA_TABLE *schema_table)
#define RUSAGE_USEC(tv) ((tv).tv_sec*1000*1000 + (tv).tv_usec)
#define RUSAGE_DIFF_USEC(tv1, tv2) (RUSAGE_USEC((tv1))-RUSAGE_USEC((tv2)))
#ifdef _WIN32
static ULONGLONG FileTimeToQuadWord(FILETIME *ft)
{
// Overlay FILETIME onto a ULONGLONG.
union {
ULONGLONG qwTime;
FILETIME ft;
} u;
u.ft = *ft;
return u.qwTime;
}
// Get time difference between to FILETIME objects in seconds.
static double GetTimeDiffInSeconds(FILETIME *a, FILETIME *b)
{
return ((FileTimeToQuadWord(a) - FileTimeToQuadWord(b)) / 1e7);
}
#endif
PROF_MEASUREMENT::PROF_MEASUREMENT(QUERY_PROFILE *profile_arg, const char
*status_arg)
@ -224,6 +244,12 @@ void PROF_MEASUREMENT::collect()
time_usecs= (double) my_getsystime() / 10.0; /* 1 sec was 1e7, now is 1e6 */
#ifdef HAVE_GETRUSAGE
getrusage(RUSAGE_SELF, &rusage);
#elif defined(_WIN32)
FILETIME ftDummy;
// NOTE: Get{Process|Thread}Times has a granularity of the clock interval,
// which is typically ~15ms. So intervals shorter than that will not be
// measurable by this function.
GetProcessTimes(GetCurrentProcess(), &ftDummy, &ftDummy, &ftKernel, &ftUser);
#endif
}
@ -589,6 +615,23 @@ int PROFILING::fill_statistics_info(THD *thd, TABLE_LIST *tables, Item *cond)
(1000.0*1000),
&cpu_stime_decimal);
table->field[4]->store_decimal(&cpu_utime_decimal);
table->field[5]->store_decimal(&cpu_stime_decimal);
table->field[4]->set_notnull();
table->field[5]->set_notnull();
#elif defined(_WIN32)
my_decimal cpu_utime_decimal, cpu_stime_decimal;
double2my_decimal(E_DEC_FATAL_ERROR,
GetTimeDiffInSeconds(&entry->ftUser,
&previous->ftUser),
&cpu_utime_decimal);
double2my_decimal(E_DEC_FATAL_ERROR,
GetTimeDiffInSeconds(&entry->ftKernel,
&previous->ftKernel),
&cpu_stime_decimal);
// Store the result.
table->field[4]->store_decimal(&cpu_utime_decimal);
table->field[5]->store_decimal(&cpu_stime_decimal);
table->field[4]->set_notnull();

2
sql/sql_profile.h
View File

@ -173,6 +173,8 @@ private:
char *status;
#ifdef HAVE_GETRUSAGE
struct rusage rusage;
#elif defined(_WIN32)
FILETIME ftKernel, ftUser;
#endif
char *function;