Function perf_get_info

src/yvalve/perf.cpp:226–340

template<typename P>
static void perf_get_info(FB_API_HANDLE* handle, P* perf)
{
/**************************************
 *
 *	P E R F _ g e t _ i n f o
 *
 **************************************
 *
 * Functional description
 *	Acquire timing and performance information.  Some info comes
 *	from the system and some from the database.
 *
 **************************************/
	SSHORT buffer_length, item_length;
	ISC_STATUS_ARRAY jrd_status;
#ifdef HAVE_GETTIMEOFDAY
	struct timeval tp;
#else
	struct timeb time_buffer;
#define LARGE_NUMBER 696600000	// to avoid overflow, get rid of decades)
#endif

	// If there isn't a database, zero everything out

	if (!*handle) {
		memset(perf, 0, sizeof(PERF));
	}

	// Get system time

	times(&perf->perf_times);

#ifdef HAVE_GETTIMEOFDAY
	GETTIMEOFDAY(&tp);
	perf->perf_elapsed = tp.tv_sec * 100 + tp.tv_usec / 10000;
#else
	ftime(&time_buffer);
	perf->perf_elapsed = (time_buffer.time - LARGE_NUMBER) * 100 + (time_buffer.millitm / 10);
#endif

	if (!*handle)
		return;

	SCHAR buffer[256];
	buffer_length = sizeof(buffer);
	item_length = sizeof(items);
	isc_database_info(jrd_status, handle, item_length, items, buffer_length, buffer);

	const char* p = buffer;

	while (true)
		switch (*p++)
		{
		case isc_info_reads:
			perf->perf_reads = get_parameter(&p);
			break;

		case isc_info_writes: