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- "-Ofast" option is supplied to MIPSPro compiler [Brian J. Johnson

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- workaround for IRIX pthreads bug in Delay_usec() [Brian J. Johnson]
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cebix 2001-03-28 16:53:39 +00:00
parent 3c0d6f6e43
commit 0cf579b49e
3 changed files with 43 additions and 4 deletions
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3
BasiliskII/ChangeLog
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@ -1,6 +1,9 @@
V0.9 - <insert date here>
- Unix: some performance improvements to VOSF screen update code
[Brian J. Johnson]
- Unix: -Ofast option is supplied to MIPSPro compiler [Brian J. Johnson]
- Unix: workaround for IRIX pthreads bug in Delay_usec()
[Brian J. Johnson]
V0.9 (snapshot) - 17.Feb.2001
- adapted for mon V3.0 which is now the required minimum

18
BasiliskII/src/Unix/configure.in
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@ -279,6 +279,16 @@ irix*)
dnl IRIX headers work fine, but somehow don't define or use "STDC_HEADERS"
DEFINES="$DEFINES -DCRTSCTS=CNEW_RTSCTS -DB230400=B115200 -DSTDC_HEADERS"
LIBS="$LIBS -laudio"
dnl Check if our compiler supports -Ofast (MIPSPro)
HAVE_OFAST=no
ocflags="$CFLAGS"
CFLAGS=`echo $CFLAGS | sed -e 's/ -g / -Ofast /;s/^-g /-Ofast /;s/-g$/ -Ofast/;s/^-g$/-Ofast/'`
AC_MSG_CHECKING(if "-Ofast" works)
dnl Do a test compile of an empty function
AC_TRY_COMPILE(,, [AC_MSG_RESULT(yes); HAVE_OFAST=yes], AC_MSG_RESULT(no))
CFLAGS="$ocflags"
;;
esac
@ -666,6 +676,14 @@ if [[ "x$HAVE_GCC27" = "xyes" ]]; then
CXXFLAGS=`echo $CXXFLAGS | sed -e 's/ -g / /;s/^-g / /;s/ -g$/ /;s/^-g$//'`
fi
dnl Or if we have -Ofast
if [[ "x$HAVE_OFAST" = "xyes" ]]; then
CFLAGS=`echo $CFLAGS | sed -e 's/ -g / -Ofast /;s/^-g /-Ofast /;s/-g$/ -Ofast/;s/^-g$/-Ofast/'`
CXXFLAGS=`echo $CXXFLAGS | sed -e 's/ -g / -Ofast /;s/^-g /-Ofast/;s/ -g$/ -Ofast/;s/^-g$/-Ofast/'`
CXXFLAGS="-LANG:std $CXXFLAGS"
LDFLAGS="$LDFLAGS -Ofast"
fi
dnl Generate Makefile.
AC_SUBST(DEFINES)
AC_SUBST(SYSSRCS)

26
BasiliskII/src/Unix/main_unix.cpp
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@ -869,16 +869,26 @@ uint64 GetTicks_usec(void)
// Linux select() changes its timeout parameter upon return to contain
// the remaining time. Most other unixen leave it unchanged or undefined.
#define SELECT_SETS_REMAINING
#elif defined(__FreeBSD__) || defined(__sun__) || defined(sgi)
#elif defined(__FreeBSD__) || defined(__sun__)
#define USE_NANOSLEEP
#elif defined(HAVE_PTHREADS) && defined(sgi)
// SGI pthreads has a bug when using pthreads+signals+nanosleep,
// so instead of using nanosleep, wait on a CV which is never signalled.
#define USE_COND_TIMEDWAIT
#endif
void Delay_usec(uint32 usec)
{
int was_error;
#ifdef USE_NANOSLEEP
#if defined(USE_NANOSLEEP)
struct timespec elapsed, tv;
#elif defined(USE_COND_TIMEDWAIT)
// Use a local mutex and cv, so threads remain independent
pthread_cond_t delay_cond = PTHREAD_COND_INITIALIZER;
pthread_mutex_t delay_mutex = PTHREAD_MUTEX_INITIALIZER;
struct timespec elapsed;
uint64 future;
#else
struct timeval tv;
#ifndef SELECT_SETS_REMAINING
@ -887,22 +897,30 @@ void Delay_usec(uint32 usec)
#endif
// Set the timeout interval - Linux only needs to do this once
#ifdef SELECT_SETS_REMAINING
#if defined(SELECT_SETS_REMAINING)
tv.tv_sec = 0;
tv.tv_usec = usec;
#elif defined(USE_NANOSLEEP)
elapsed.tv_sec = 0;
elapsed.tv_nsec = usec * 1000;
#elif defined(USE_COND_TIMEDWAIT)
future = GetTicks_usec() + usec;
elapsed.tv_sec = future / 1000000;
elapsed.tv_nsec = (future % 1000000) * 1000;
#else
then = GetTicks_usec();
#endif
do {
errno = 0;
#ifdef USE_NANOSLEEP
#if defined(USE_NANOSLEEP)
tv.tv_sec = elapsed.tv_sec;
tv.tv_nsec = elapsed.tv_nsec;
was_error = nanosleep(&tv, &elapsed);
#elif defined(USE_COND_TIMEDWAIT)
was_error = pthread_mutex_lock(&delay_mutex);
was_error = pthread_cond_timedwait(&delay_cond, &delay_mutex, &elapsed);
was_error = pthread_mutex_unlock(&delay_mutex);
#else
#ifndef SELECT_SETS_REMAINING
// Calculate the time interval left (in case of interrupt)