pike.git/ src/ configure.in

Branch: Tag:

2001-06-19

2001-06-19 22:47:37 by Per Hedbor <ph@opera.com>

Disabled RTSC detection

Rev: src/configure.in:1.526

1: - AC_REVISION("$Id: configure.in,v 1.525 2001/06/13 11:55:14 grubba Exp $") + AC_REVISION("$Id: configure.in,v 1.526 2001/06/19 22:47:37 per Exp $")   AC_INIT(interpret.c)   AC_CONFIG_HEADER(machine.h)   
2858:      AC_MSG_RESULT($pike_cv_func_gettimeofday_has_two_args)    - if test "x$ac_cv_func_gethrtime" != "xyes"; then -  AC_MSG_CHECKING(if we can make gethrtime by the RDTSC instruction) -  AC_CACHE_VAL(pike_cv_own_gethrtime_rdtsc, [ -  AC_TRY_RUN([ - #include <unistd.h> - #include <stdio.h> - #include <sys/time.h> -  - static long long hrtime_rtsc_zero; - static long long hrtime_rtsc_last; - static long long hrtime_max; - static struct timeval hrtime_timeval_zero; - static long double hrtime_conv=0.0; -  - #define GETTIMEOFDAY(PTR) gettimeofday(PTR,NULL) -  - #define RTSC(x) \ -  __asm__ __volatile__ ( "rdtsc" \ -  :"=a" (((unsigned long*)&x)[0]), \ -  "=d" (((unsigned long*)&x)[1])) -  - void own_gethrtime_init() - { -  GETTIMEOFDAY(&hrtime_timeval_zero); -  RTSC(hrtime_rtsc_zero); -  hrtime_rtsc_last=hrtime_rtsc_zero; -  hrtime_max=0; - } -  - int own_gethrtime_update(struct timeval *ptr) - { -  long long td,t,now; -  GETTIMEOFDAY(ptr); -  RTSC(now); -  td=((long long)ptr->tv_sec-hrtime_timeval_zero.tv_sec)*1000000000+ -  ((long long)ptr->tv_usec-hrtime_timeval_zero.tv_usec)*1000; -  -  hrtime_rtsc_last=now; -  t=now-hrtime_rtsc_zero; -  if (t) hrtime_conv=((long double)td)/t; -  -  return 1; - } -  - /* this is very sensitive to the compiler; keep all crap */ -  - long long gethrtime() - { -  long long now; -  struct timeval tv; -  -  if (hrtime_conv==0.0) -  { -  if (!own_gethrtime_update(&tv)) /* not calibrated yet */ -  { -  return -  hrtime_max= -  ((long long)tv.tv_sec-hrtime_timeval_zero.tv_sec)*1000000000+ -  ((long long)tv.tv_usec-hrtime_timeval_zero.tv_usec)*1000; -  } -  } -  -  RTSC(now); -  -  if (now-hrtime_rtsc_last > 2000000000) -  { -  own_gethrtime_update(&tv); -  return gethrtime(); -  } -  -  now = (long long) ( (long double)(now-hrtime_rtsc_zero) * hrtime_conv ); -  -  if (now<hrtime_max) now=hrtime_max; -  return hrtime_max=now; - } -  - #include <stdio.h> -  - int main() - { -  struct timeval tv1,tv2; -  long long td,t1,t2; -  own_gethrtime_init(); -  -  usleep(10); -  own_gethrtime_update(&tv2); -  -  t1=gethrtime(); -  -  gettimeofday(&tv1,NULL); -  for (;;) /* busy loop */ -  { -  GETTIMEOFDAY(&tv2); -  td=((long long)tv2.tv_sec-tv1.tv_sec)*1000000000+ -  ((long long)tv2.tv_usec-tv1.tv_usec)*1000; -  if (td>1000000) break; -  } -  t2=gethrtime(); -  - /* printf("t2-t1=%lld\n",t2-t1); */ -  -  if (t2==hrtime_rtsc_zero || -  t2-t1>1100000 || -  t2-t1<900000) return 1; -  -  return 0; - }], pike_cv_own_gethrtime_rdtsc=yes, -  pike_cv_own_gethrtime_rdtsc=no, pike_cv_own_gethrtime_rdtsc=no) -  ]) -  if test "x$pike_cv_own_gethrtime_rdtsc" = "xyes"; then -  AC_MSG_RESULT(yes) -  AC_DEFINE(OWN_GETHRTIME) -  AC_DEFINE(OWN_GETHRTIME_RDTSC) -  AC_DEFINE(HAVE_GETHRTIME) -  else -  AC_MSG_RESULT([no]) -  fi - fi -  + # if test "x$ac_cv_func_gethrtime" != "xyes"; then + # AC_MSG_CHECKING(if we can make gethrtime by the RDTSC instruction) + # AC_CACHE_VAL(pike_cv_own_gethrtime_rdtsc, [ + # AC_TRY_RUN([ + # #include <unistd.h> + # #include <stdio.h> + # #include <sys/time.h> + # + # static long long hrtime_rtsc_zero; + # static long long hrtime_rtsc_last; + # static long long hrtime_max; + # static struct timeval hrtime_timeval_zero; + # static long double hrtime_conv=0.0; + # + # #define GETTIMEOFDAY(PTR) gettimeofday(PTR,NULL) + # + # #define RTSC(x) \ + # __asm__ __volatile__ ( "rdtsc" \ + # :"=a" (((unsigned long*)&x)[0]), \ + # "=d" (((unsigned long*)&x)[1])) + # + # void own_gethrtime_init() + # { + # GETTIMEOFDAY(&hrtime_timeval_zero); + # RTSC(hrtime_rtsc_zero); + # hrtime_rtsc_last=hrtime_rtsc_zero; + # hrtime_max=0; + # } + # + # int own_gethrtime_update(struct timeval *ptr) + # { + # long long td,t,now; + # GETTIMEOFDAY(ptr); + # RTSC(now); + # td=((long long)ptr->tv_sec-hrtime_timeval_zero.tv_sec)*1000000000+ + # ((long long)ptr->tv_usec-hrtime_timeval_zero.tv_usec)*1000; + # + # hrtime_rtsc_last=now; + # t=now-hrtime_rtsc_zero; + # if (t) hrtime_conv=((long double)td)/t; + # + # return 1; + # } + # + # /* this is very sensitive to the compiler; keep all crap */ + # + # long long gethrtime() + # { + # long long now; + # struct timeval tv; + # + # if (hrtime_conv==0.0) + # { + # if (!own_gethrtime_update(&tv)) /* not calibrated yet */ + # { + # return + # hrtime_max= + # ((long long)tv.tv_sec-hrtime_timeval_zero.tv_sec)*1000000000+ + # ((long long)tv.tv_usec-hrtime_timeval_zero.tv_usec)*1000; + # } + # } + # + # RTSC(now); + # + # if (now-hrtime_rtsc_last > 2000000000) + # { + # own_gethrtime_update(&tv); + # return gethrtime(); + # } + # + # now = (long long) ( (long double)(now-hrtime_rtsc_zero) * hrtime_conv ); + # + # if (now<hrtime_max) now=hrtime_max; + # return hrtime_max=now; + # } + # + # #include <stdio.h> + # + # int main() + # { + # struct timeval tv1,tv2; + # long long td,t1,t2; + # own_gethrtime_init(); + # + # usleep(10); + # own_gethrtime_update(&tv2); + # + # t1=gethrtime(); + # + # gettimeofday(&tv1,NULL); + # for (;;) /* busy loop */ + # { + # GETTIMEOFDAY(&tv2); + # td=((long long)tv2.tv_sec-tv1.tv_sec)*1000000000+ + # ((long long)tv2.tv_usec-tv1.tv_usec)*1000; + # if (td>1000000) break; + # } + # t2=gethrtime(); + # + # /* printf("t2-t1=%lld\n",t2-t1); */ + # + # if (t2==hrtime_rtsc_zero || + # t2-t1>1100000 || + # t2-t1<900000) return 1; + # + # return 0; + # }], pike_cv_own_gethrtime_rdtsc=yes, + # pike_cv_own_gethrtime_rdtsc=no, pike_cv_own_gethrtime_rdtsc=no) + # ]) + # if test "x$pike_cv_own_gethrtime_rdtsc" = "xyes"; then + # AC_MSG_RESULT(yes) + # AC_DEFINE(OWN_GETHRTIME) + # AC_DEFINE(OWN_GETHRTIME_RDTSC) + # AC_DEFINE(HAVE_GETHRTIME) + # else + # AC_MSG_RESULT([no]) + # fi + # fi + #   AC_MSG_CHECKING(if struct tm has tm_gmtoff)      AC_CACHE_VAL(pike_cv_struct_tm_has_gmtoff,[