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/* ACC -- Automatic Compiler Configuration
Copyright (C) 1996-2004 Markus Franz Xaver Johannes Oberhumer
All Rights Reserved.
This software is a copyrighted work licensed under the terms of
the GNU General Public License. Please consult the file "ACC_LICENSE"
for details.
Markus F.X.J. Oberhumer
<markus@oberhumer.com>
http://www.oberhumer.com/
*/
#define __ACCLIB_UCLOCK_CH_INCLUDED 1
#if !defined(ACCLIB_PUBLIC)
# define ACCLIB_PUBLIC(r,f) r __ACCLIB_FUNCNAME(f)
#endif
#if (ACC_OS_DOS16 || ACC_OS_WIN16)
#elif (ACC_OS_DOS32 && ACC_CC_GNUC) && defined(__DJGPP__)
#elif (ACC_OS_CYGWIN || ACC_OS_WIN32 || ACC_OS_WIN64) && (ACC_HAVE_WINDOWS_H)
# if defined(acc_int64l_t)
/* See also: KB Q274323: PRB: Performance Counter Value May
* Unexpectedly Leap Forward */
# define __ACCLIB_UCLOCK_USE_QPC 1
# endif
/* fallbacks */
# if ((ACC_CC_DMC && (__DMC__ < 0x838)) || ACC_CC_LCC)
/* winmm.lib is missing */
# define __ACCLIB_UCLOCK_USE_CLOCK 1
# else
# define __ACCLIB_UCLOCK_USE_WINMM 1
# if (ACC_CC_MSC && (_MSC_VER >= 900))
/* avoid `-W4' warnings in <mmsystem.h> */
# pragma warning(disable: 4201)
# elif (ACC_CC_MWERKS)
/* avoid duplicate typedef in <mmsystem.h> */
# define LPUINT __ACC_MMSYSTEM_H_LPUINT
# endif
# if 1
# include <mmsystem.h>
# else
# if (ACC_CC_INTELC || ACC_CC_MSC || ACC_CC_PELLESC)
ACC_EXTERN_C __declspec(dllimport) unsigned long __stdcall timeGetTime(void);
# else
ACC_EXTERN_C unsigned long __stdcall timeGetTime(void);
# endif
# endif
# if (ACC_CC_DMC)
# pragma DMC includelib "winmm.lib"
# elif (ACC_CC_INTELC || ACC_CC_MSC || ACC_CC_PELLESC)
# pragma comment(lib, "winmm.lib")
# elif (ACC_CC_MWERKS && (__MWERKS__ >= 0x3000))
# pragma comment(lib, "winmm.lib")
# elif (ACC_CC_SYMANTECC)
# pragma SC includelib "winmm.lib"
# elif (ACC_CC_WATCOMC && (__WATCOMC__ >= 1050))
# pragma library("winmm.lib")
# endif
# endif
#elif (ACC_OS_EMX) && (ACC_HAVE_WINDOWS_H) && defined(acc_int64l_t)
# define __ACCLIB_UCLOCK_USE_QPC 1
#elif (ACC_OS_CYGWIN || ACC_OS_DOS32 || ACC_OS_EMX || ACC_OS_OS2 || ACC_OS_OS216 || ACC_OS_TOS || ACC_OS_WIN32 || ACC_OS_WIN64)
# define __ACCLIB_UCLOCK_USE_CLOCK 1
#endif
#if (__ACCLIB_UCLOCK_USE_CLOCK) && !defined(CLOCKS_PER_SEC)
# if defined(CLK_TCK)
# define CLOCKS_PER_SEC CLK_TCK
# else
# undef __ACCLIB_UCLOCK_USE_CLOCK
# endif
#endif
/*************************************************************************
//
**************************************************************************/
ACCLIB_PUBLIC(int, acc_uclock_open) (acc_uclock_handle_p h)
{
acc_uclock_t c;
int i;
#if (__ACCLIB_UCLOCK_USE_QPC)
LARGE_INTEGER li;
h->qpf = 0.0;
if (QueryPerformanceFrequency(&li) != 0) {
h->qpf = (double) li.QuadPart;
if (h->qpf <= 0.0 || QueryPerformanceCounter(&li) == 0) {
h->qpf = 0.0;
}
}
#elif (ACC_HAVE_WINDOWS_H) && defined(acc_int64l_t)
h->qpf = 0.0;
#endif
h->h = 1;
h->mode = 0;
/* warm up */
i = 100;
do {
acc_uclock_read(h, &c);
#if (__ACCLIB_UCLOCK_USE_QPC)
if (h->qpf > 0.0 && c.qpc == 0) { h->qpf = 0.0; i = 100; }
#endif
} while (--i > 0);
return 0;
}
ACCLIB_PUBLIC(int, acc_uclock_close) (acc_uclock_handle_p h)
{
h->h = 0;
h->mode = -1;
return 0;
}
/*************************************************************************
//
**************************************************************************/
ACCLIB_PUBLIC(void, acc_uclock_read) (acc_uclock_handle_p h, acc_uclock_p c)
{
#if (__ACCLIB_UCLOCK_USE_QPC)
if (h->qpf > 0.0) {
LARGE_INTEGER li;
if (QueryPerformanceCounter(&li) != 0) {
c->qpc = (acc_int64l_t) li.QuadPart;
if (c->qpc > 0)
return;
}
c->qpc = 0; /* failed */
}
#elif (ACC_HAVE_WINDOWS_H) && defined(acc_int64l_t)
/* c->qpc = 0; */
#endif
{
#if (ACC_OS_DOS16 || ACC_OS_WIN16)
# if (ACC_CC_AZTECC)
c->ticks.t32 = 0;
# else
union REGS ri, ro;
ri.x.ax = 0x2c00; int86(0x21, &ri, &ro);
c->ticks.t32 = ro.h.ch*60UL*60UL*100UL + ro.h.cl*60UL*100UL + ro.h.dh*100UL + ro.h.dl;
# endif
#elif (ACC_OS_DOS32 && ACC_CC_GNUC) && defined(__DJGPP__)
c->ticks.t64 = uclock();
#elif (__ACCLIB_UCLOCK_USE_CLOCK) && defined(acc_int64l_t)
c->ticks.t64 = clock();
#elif (__ACCLIB_UCLOCK_USE_CLOCK)
c->ticks.t32 = clock();
#elif (__ACCLIB_UCLOCK_USE_WINMM)
c->ticks.t32 = timeGetTime();
#elif (__ACCLIB_UCLOCK_USE_GETRUSAGE)
struct rusage ru;
if (getrusage(RUSAGE_SELF, &ru) != 0) c->ticks.rd = 0;
else c->ticks.td = ru.ru_utime.tv_sec + ru.ru_utime.tv_usec / 1000000.0;
#elif (HAVE_GETTIMEOFDAY)
struct timeval tv;
if (gettimeofday(&tv, 0) != 0) c->ticks.td = 0;
else c->ticks.td = tv.tv_sec + tv.tv_usec / 1000000.0;
#else
ACC_UNUSED(c);
#endif
}
ACC_UNUSED(h);
}
/*************************************************************************
//
**************************************************************************/
ACCLIB_PUBLIC(double, acc_uclock_get_elapsed) (acc_uclock_handle_p h, const acc_uclock_p start, const acc_uclock_p stop)
{
double d;
if (!h->h) {
h->mode = -1;
return 0.0;
}
#if (__ACCLIB_UCLOCK_USE_QPC)
if (h->qpf > 0.0) {
h->mode = 1;
if (start->qpc == 0 || stop->qpc == 0) return 0.0;
return (double) (stop->qpc - start->qpc) / h->qpf;
}
#endif
#if (ACC_OS_DOS16 || ACC_OS_WIN16)
h->mode = 2;
d = (double) (stop->ticks.t32 - start->ticks.t32) / 100.0;
if (d < 0.0) d += 86400.0; /* midnight passed */
#elif (ACC_OS_DOS32 && ACC_CC_GNUC) && defined(__DJGPP__)
h->mode = 3;
d = (double) (stop->ticks.t64 - start->ticks.t64) / (UCLOCKS_PER_SEC);
#elif (__ACCLIB_UCLOCK_USE_CLOCK) && defined(acc_int64l_t)
h->mode = 4;
d = (double) (stop->ticks.t64 - start->ticks.t64) / (CLOCKS_PER_SEC);
#elif (__ACCLIB_UCLOCK_USE_CLOCK)
h->mode = 5;
d = (double) (stop->ticks.t32 - start->ticks.t32) / (CLOCKS_PER_SEC);
#elif (__ACCLIB_UCLOCK_USE_WINMM)
h->mode = 6;
d = (double) (stop->ticks.t32 - start->ticks.t32) / 1000.0;
#elif (__ACCLIB_UCLOCK_USE_GETRUSAGE)
h->mode = 7;
d = stop->ticks.td - start->ticks.td;
#elif (HAVE_GETTIMEOFDAY)
h->mode = 8;
d = stop->ticks.td - start->ticks.td;
#else
h->mode = 0;
d = 0.0;
#endif
return d;
}
/*
vi:ts=4:et
*/
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