Rework #16506 some more.
[p5sagit/p5-mst-13.2.git] / ext / Time / HiRes / HiRes.xs
index d7d9bda..9d3586d 100644 (file)
@@ -9,6 +9,11 @@ extern "C" {
 #else
 #include <sys/time.h>
 #endif
+#ifdef HAS_SELECT
+# ifdef I_SYS_SELECT
+#  include <sys/select.h>
+# endif
+#endif
 #ifdef __cplusplus
 }
 #endif
@@ -69,7 +74,12 @@ typedef union {
 } FT_t;
 
 /* Number of 100 nanosecond units from 1/1/1601 to 1/1/1970 */
-#define EPOCH_BIAS  116444736000000000i64
+#ifdef __GNUC__
+#define Const64(x) x##LL
+#else
+#define Const64(x) x##i64
+#endif
+#define EPOCH_BIAS  Const64(116444736000000000)
 
 /* NOTE: This does not compute the timezone info (doing so can be expensive,
  * and appears to be unsupported even by glibc) */
@@ -82,10 +92,10 @@ gettimeofday (struct timeval *tp, void *not_used)
     GetSystemTimeAsFileTime(&ft.ft_val);
 
     /* seconds since epoch */
-    tp->tv_sec = (long)((ft.ft_i64 - EPOCH_BIAS) / 10000000i64);
+    tp->tv_sec = (long)((ft.ft_i64 - EPOCH_BIAS) / Const64(10000000));
 
     /* microseconds remaining */
-    tp->tv_usec = (long)((ft.ft_i64 / 10i64) % 1000000i64);
+    tp->tv_usec = (long)((ft.ft_i64 / Const64(10)) % Const64(1000000));
 
     return 0;
 }
@@ -324,6 +334,205 @@ hrt_ualarm(int usec, int interval)
 }
 #endif
 
+#if !defined(HAS_UALARM) && defined(VMS)
+#define HAS_UALARM
+#define ualarm vms_ualarm 
+
+#include <lib$routines.h>
+#include <ssdef.h>
+#include <starlet.h>
+#include <descrip.h>
+#include <signal.h>
+#include <jpidef.h>
+#include <psldef.h>
+
+#define VMSERR(s)   (!((s)&1))
+
+static void
+us_to_VMS(useconds_t mseconds, unsigned long v[])
+{
+    int iss;
+    unsigned long qq[2];
+
+    qq[0] = mseconds;
+    qq[1] = 0;
+    v[0] = v[1] = 0;
+
+    iss = lib$addx(qq,qq,qq);
+    if (VMSERR(iss)) lib$signal(iss);
+    iss = lib$subx(v,qq,v);
+    if (VMSERR(iss)) lib$signal(iss);
+    iss = lib$addx(qq,qq,qq);
+    if (VMSERR(iss)) lib$signal(iss);
+    iss = lib$subx(v,qq,v);
+    if (VMSERR(iss)) lib$signal(iss);
+    iss = lib$subx(v,qq,v);
+    if (VMSERR(iss)) lib$signal(iss);
+}
+
+static int
+VMS_to_us(unsigned long v[])
+{
+    int iss;
+    unsigned long div=10,quot, rem;
+
+    iss = lib$ediv(&div,v,&quot,&rem);
+    if (VMSERR(iss)) lib$signal(iss);
+
+    return quot;
+}
+
+typedef unsigned short word;
+typedef struct _ualarm {
+    int function;
+    int repeat;
+    unsigned long delay[2];
+    unsigned long interval[2];
+    unsigned long remain[2];
+} Alarm;
+
+
+static int alarm_ef;
+static Alarm *a0, alarm_base;
+#define UAL_NULL   0
+#define UAL_SET    1
+#define UAL_CLEAR  2
+#define UAL_ACTIVE 4
+static void ualarm_AST(Alarm *a);
+
+static int 
+vms_ualarm(int mseconds, int interval)
+{
+    Alarm *a, abase;
+    struct item_list3 {
+        word length;
+        word code;
+        void *bufaddr;
+        void *retlenaddr;
+    } ;
+    static struct item_list3 itmlst[2];
+    static int first = 1;
+    unsigned long asten;
+    int iss, enabled;
+
+    if (first) {
+        first = 0;
+        itmlst[0].code       = JPI$_ASTEN;
+        itmlst[0].length     = sizeof(asten);
+        itmlst[0].retlenaddr = NULL;
+        itmlst[1].code       = 0;
+        itmlst[1].length     = 0;
+        itmlst[1].bufaddr    = NULL;
+        itmlst[1].retlenaddr = NULL;
+
+        iss = lib$get_ef(&alarm_ef);
+        if (VMSERR(iss)) lib$signal(iss);
+
+        a0 = &alarm_base;
+        a0->function = UAL_NULL;
+    }
+    itmlst[0].bufaddr    = &asten;
+    
+    iss = sys$getjpiw(0,0,0,itmlst,0,0,0);
+    if (VMSERR(iss)) lib$signal(iss);
+    if (!(asten&0x08)) return -1;
+
+    a = &abase;
+    if (mseconds) {
+        a->function = UAL_SET;
+    } else {
+        a->function = UAL_CLEAR;
+    }
+
+    us_to_VMS(mseconds, a->delay);
+    if (interval) {
+        us_to_VMS(interval, a->interval);
+        a->repeat = 1;
+    } else 
+        a->repeat = 0;
+
+    iss = sys$clref(alarm_ef);
+    if (VMSERR(iss)) lib$signal(iss);
+
+    iss = sys$dclast(ualarm_AST,a,0);
+    if (VMSERR(iss)) lib$signal(iss);
+
+    iss = sys$waitfr(alarm_ef);
+    if (VMSERR(iss)) lib$signal(iss);
+
+    if (a->function == UAL_ACTIVE) 
+        return VMS_to_us(a->remain);
+    else
+        return 0;
+}
+
+
+
+static void
+ualarm_AST(Alarm *a)
+{
+    int iss;
+    unsigned long now[2];
+
+    iss = sys$gettim(now);
+    if (VMSERR(iss)) lib$signal(iss);
+
+    if (a->function == UAL_SET || a->function == UAL_CLEAR) {
+        if (a0->function == UAL_ACTIVE) {
+            iss = sys$cantim(a0,PSL$C_USER);
+            if (VMSERR(iss)) lib$signal(iss);
+
+            iss = lib$subx(a0->remain, now, a->remain);
+            if (VMSERR(iss)) lib$signal(iss);
+
+            if (a->remain[1] & 0x80000000) 
+                a->remain[0] = a->remain[1] = 0;
+        }
+
+        if (a->function == UAL_SET) {
+            a->function = a0->function;
+            a0->function = UAL_ACTIVE;
+            a0->repeat = a->repeat;
+            if (a0->repeat) {
+                a0->interval[0] = a->interval[0];
+                a0->interval[1] = a->interval[1];
+            }
+            a0->delay[0] = a->delay[0];
+            a0->delay[1] = a->delay[1];
+
+            iss = lib$subx(now, a0->delay, a0->remain);
+            if (VMSERR(iss)) lib$signal(iss);
+
+            iss = sys$setimr(0,a0->delay,ualarm_AST,a0);
+            if (VMSERR(iss)) lib$signal(iss);
+        } else {
+            a->function = a0->function;
+            a0->function = UAL_NULL;
+        }
+        iss = sys$setef(alarm_ef);
+        if (VMSERR(iss)) lib$signal(iss);
+    } else if (a->function == UAL_ACTIVE) {
+        if (a->repeat) {
+            iss = lib$subx(now, a->interval, a->remain);
+            if (VMSERR(iss)) lib$signal(iss);
+
+            iss = sys$setimr(0,a->interval,ualarm_AST,a);
+            if (VMSERR(iss)) lib$signal(iss);
+        } else {
+            a->function = UAL_NULL;
+        }
+        iss = sys$wake(0,0);
+        if (VMSERR(iss)) lib$signal(iss);
+        lib$signal(SS$_ASTFLT);
+    } else {
+        lib$signal(SS$_BADPARAM);
+    }
+}
+
+#endif /* !HAS_UALARM && VMS */
+
+
+
 #ifdef HAS_GETTIMEOFDAY
 
 static int
@@ -356,7 +565,7 @@ BOOT:
 #ifdef HAS_GETTIMEOFDAY
 {
   UV auv[2];
-  hv_store(PL_modglobal, "Time::NVtime", 12, newSViv((IV) myNVtime()), 0);
+  hv_store(PL_modglobal, "Time::NVtime", 12, newSViv(PTR2IV(myNVtime)), 0);
   if (myU2time(auv) == 0)
     hv_store(PL_modglobal, "Time::U2time", 12, newSViv((IV) auv[0]), 0);
 }
@@ -367,20 +576,64 @@ constant(name, arg)
        char *          name
        int             arg
 
-#ifdef HAS_USLEEP
+#if defined(HAS_USLEEP) && defined(HAS_GETTIMEOFDAY)
 
-void
+NV
 usleep(useconds)
-        int useconds 
+        NV useconds
+       PREINIT:
+       struct timeval Ta, Tb;
+       CODE:
+       gettimeofday(&Ta, NULL);
+       if (items > 0) {
+           if (useconds > 1E6) {
+               IV seconds = (IV) (useconds / 1E6);
+               /* If usleep() has been implemented using setitimer()
+                * then this contortion is unnecessary-- but usleep()
+                * may be implemented in some other way, so let's contort. */
+               if (seconds) {
+                   sleep(seconds);
+                   useconds -= 1E6 * seconds;
+               }
+           } else if (useconds < 0.0)
+               croak("Time::HiRes::usleep(%"NVgf"): negative time not invented yet", useconds);
+           usleep((UV)useconds);
+       } else
+           PerlProc_pause();
+       gettimeofday(&Tb, NULL);
+#if 0
+       printf("[%ld %ld] [%ld %ld]\n", Tb.tv_sec, Tb.tv_usec, Ta.tv_sec, Ta.tv_usec);
+#endif
+       RETVAL = 1E6*(Tb.tv_sec-Ta.tv_sec)+(NV)((IV)Tb.tv_usec-(IV)Ta.tv_usec);
 
-void
+       OUTPUT:
+       RETVAL
+
+NV
 sleep(...)
-       PROTOTYPE: ;$
+       PREINIT:
+       struct timeval Ta, Tb;
        CODE:
-       if (items > 0)
-           usleep((int)(SvNV(ST(0)) * 1000000));
-       else
+       gettimeofday(&Ta, NULL);
+       if (items > 0) {
+           NV seconds  = SvNV(ST(0));
+           if (seconds >= 0.0) {
+                UV useconds = (UV)(1E6 * (seconds - (UV)seconds));
+                if (seconds >= 1.0)
+                    sleep((UV)seconds);
+                usleep(useconds);
+           } else
+               croak("Time::HiRes::sleep(%"NVgf"): negative time not invented yet", seconds);
+       } else
            PerlProc_pause();
+       gettimeofday(&Tb, NULL);
+#if 0
+       printf("[%ld %ld] [%ld %ld]\n", Tb.tv_sec, Tb.tv_usec, Ta.tv_sec, Ta.tv_usec);
+#endif
+       RETVAL = (NV)(Tb.tv_sec-Ta.tv_sec)+0.000001*(NV)(Tb.tv_usec-Ta.tv_usec);
+
+       OUTPUT:
+       RETVAL
 
 #endif
 
@@ -390,17 +643,23 @@ int
 ualarm(useconds,interval=0)
        int useconds
        int interval
+       CODE:
+       if (useconds < 0 || interval < 0)
+           croak("Time::HiRes::ualarm(%d, %d): negative time not invented yet", useconds, interval);
+       RETVAL = ualarm(useconds, interval);
 
-int
-alarm(fseconds,finterval=0)
-       NV fseconds
-       NV finterval
-       PREINIT:
-       int useconds, uinterval;
+       OUTPUT:
+       RETVAL
+
+NV
+alarm(seconds,interval=0)
+       NV seconds
+       NV interval
        CODE:
-       useconds = fseconds * 1000000;
-       uinterval = finterval * 1000000;
-       RETVAL = ualarm (useconds, uinterval);
+       if (seconds < 0.0 || interval < 0.0)
+           croak("Time::HiRes::alarm(%"NVgf", %"NVgf"): negative time not invented yet", seconds, interval);
+       RETVAL = (NV)ualarm(seconds  * 1000000,
+                           interval * 1000000) / 1E6;
 
        OUTPUT:
        RETVAL
@@ -408,7 +667,41 @@ alarm(fseconds,finterval=0)
 #endif
 
 #ifdef HAS_GETTIMEOFDAY
+#    ifdef MACOS_TRADITIONAL   /* fix epoch TZ and use unsigned time_t */
+void
+gettimeofday()
+        PREINIT:
+        struct timeval Tp;
+        struct timezone Tz;
+        PPCODE:
+        int status;
+        status = gettimeofday (&Tp, &Tz);
+        Tp.tv_sec += Tz.tz_minuteswest * 60;   /* adjust for TZ */
+
+        if (GIMME == G_ARRAY) {
+             EXTEND(sp, 2);
+             /* Mac OS (Classic) has unsigned time_t */
+             PUSHs(sv_2mortal(newSVuv(Tp.tv_sec)));
+             PUSHs(sv_2mortal(newSViv(Tp.tv_usec)));
+        } else {
+             EXTEND(sp, 1);
+             PUSHs(sv_2mortal(newSVnv(Tp.tv_sec + (Tp.tv_usec / 1000000.0))));
+        }
+
+NV
+time()
+        PREINIT:
+        struct timeval Tp;
+        struct timezone Tz;
+        CODE:
+        int status;
+        status = gettimeofday (&Tp, &Tz);
+        Tp.tv_sec += Tz.tz_minuteswest * 60;   /* adjust for TZ */
+        RETVAL = Tp.tv_sec + (Tp.tv_usec / 1000000.0);
+       OUTPUT:
+       RETVAL
 
+#    else      /* MACOS_TRADITIONAL */
 void
 gettimeofday()
         PREINIT:
@@ -436,6 +729,7 @@ time()
        OUTPUT:
        RETVAL
 
+#    endif     /* MACOS_TRADITIONAL */
 #endif
 
 #if defined(HAS_GETITIMER) && defined(HAS_SETITIMER)
@@ -451,6 +745,8 @@ setitimer(which, seconds, interval = 0)
        struct itimerval newit;
        struct itimerval oldit;
     PPCODE:
+       if (seconds < 0.0 || interval < 0.0)
+           croak("Time::HiRes::setitimer(%"IVdf", %"NVgf", %"NVgf"): negative time not invented yet", which, seconds, interval);
        newit.it_value.tv_sec  = seconds;
        newit.it_value.tv_usec =
          (seconds  - (NV)newit.it_value.tv_sec)    * 1000000.0;