Remove system_micros from vm, implement gmt hook on windows

basis/calendar/calendar.factor

@@ -7,6 +7,8 @@ IN: calendar
 
 HOOK: gmt-offset os ( -- hours minutes seconds )
 
+HOOK: gmt os ( -- timestamp )
+
 TUPLE: duration
     { year real }
     { month real }
@@ -371,10 +373,6 @@ M: duration time-
 : timestamp>micros ( timestamp -- n )
     unix-1970 (time-) 1000000 * >integer ;
 
-: gmt ( -- timestamp )
-    #! GMT time, right now
-    unix-1970 system-micros microseconds time+ ;
-
 : now ( -- timestamp ) gmt >local-time ;
 : hence ( duration -- timestamp ) now swap time+ ;
 : ago ( duration -- timestamp ) now swap time- ;

basis/calendar/windows/windows.factor

@@ -3,15 +3,6 @@ windows.kernel32 kernel math combinators windows.errors
 accessors classes.struct calendar.format math.functions ;
 IN: calendar.windows
 
-M: windows gmt-offset ( -- hours minutes seconds )
-    TIME_ZONE_INFORMATION <struct>
-    dup GetTimeZoneInformation {
-        { TIME_ZONE_ID_INVALID [ win32-error-string throw ] }
-        { TIME_ZONE_ID_UNKNOWN [ Bias>> ] }
-        { TIME_ZONE_ID_STANDARD [ Bias>> ] }
-        { TIME_ZONE_ID_DAYLIGHT [ [ Bias>> ] [ DaylightBias>> ] bi + ] }
-    } case neg 60 /mod 0 ;
-
 : timestamp>SYSTEMTIME ( timestamp -- SYSTEMTIME )
     {
         [ year>> ]
@@ -34,5 +25,17 @@ M: windows gmt-offset ( -- hours minutes seconds )
         [ wDay>> ]
         [ wHour>> ]
         [ wMinute>> ]
-        [ [ wSecond>> ] [ wMilliseconds>> 1000 /f ] bi + ]
-    } cleave gmt-offset-duration <timestamp> ;
+        [ [ wSecond>> ] [ wMilliseconds>> 1000 / ] bi + ]
+    } cleave instant <timestamp> ;
+
+M: windows gmt-offset ( -- hours minutes seconds )
+    TIME_ZONE_INFORMATION <struct>
+    dup GetTimeZoneInformation {
+        { TIME_ZONE_ID_INVALID [ win32-error-string throw ] }
+        { TIME_ZONE_ID_UNKNOWN [ Bias>> ] }
+        { TIME_ZONE_ID_STANDARD [ Bias>> ] }
+        { TIME_ZONE_ID_DAYLIGHT [ [ Bias>> ] [ DaylightBias>> ] bi + ] }
+    } case neg 60 /mod 0 ;
+
+M: windows gmt
+    SYSTEMTIME <struct> [ GetSystemTime ] keep SYSTEMTIME>timestamp ;

core/bootstrap/primitives.factor

@@ -536,7 +536,6 @@ tuple
     { "set-string-nth-fast" "strings.private" "primitive_set_string_nth_fast" (( ch n string -- )) }
     { "(exit)" "system" "primitive_exit" (( n -- * )) }
     { "nano-count" "system" "primitive_nano_count" (( -- ns )) }
-    { "system-micros" "system" "primitive_system_micros" (( -- us )) }
     { "(sleep)" "threads.private" "primitive_sleep" (( nanos -- )) }
     { "callstack-for" "threads.private" "primitive_callstack_for" (( context -- array )) }
     { "context-object-for" "threads.private" "primitive_context_object_for" (( n context -- obj )) }

extra/time/windows/windows.factor

@@ -4,9 +4,6 @@ USING: calendar.windows system time windows.errors
 windows.kernel32 kernel classes.struct calendar ;
 IN: time.windows
 
-: windows-system-time ( -- SYSTEMTIME )
-    SYSTEMTIME <struct> [ GetSystemTime ] keep ;
-
 M: windows set-time
     >gmt
     timestamp>SYSTEMTIME SetSystemTime win32-error=0/f ;

vm/os-unix.cpp

@@ -19,13 +19,6 @@ THREADHANDLE start_thread(void *(*start_routine)(void *),void *args)
 
 static void *null_dll;
 
-u64 system_micros()
-{
-	struct timeval t;
-	gettimeofday(&t,NULL);
-	return (u64)t.tv_sec * 1000000 + t.tv_usec;
-}
-
 void sleep_nanos(u64 nsec)
 {
 	timespec ts;

vm/os-unix.hpp

@@ -42,7 +42,6 @@ inline static THREADHANDLE thread_id() { return pthread_self(); }
 void signal_handler(int signal, siginfo_t* siginfo, void* uap);
 void dump_stack_signal(int signal, siginfo_t* siginfo, void* uap);
 
-u64 system_micros();
 u64 nano_count();
 void sleep_nanos(u64 nsec);
 void open_console();

vm/os-windows-ce.cpp

@@ -3,16 +3,6 @@
 namespace factor
 {
 
-u64 system_micros()
-{
-	SYSTEMTIME st;
-	FILETIME ft;
-	GetSystemTime(&st);
-	SystemTimeToFileTime(&st, &ft);
-	return (((s64)ft.dwLowDateTime
-		| (s64)ft.dwHighDateTime<<32) - EPOCH_OFFSET) / 10;
-}
-
 char *strerror(int err)
 {
 	/* strerror() is not defined on WinCE */

vm/os-windows-ce.hpp

@@ -21,7 +21,6 @@ char *getenv(char *name);
 #define snprintf _snprintf
 #define snwprintf _snwprintf
 
-u64 system_micros();
 void c_to_factor_toplevel(cell quot);
 void open_console();
 

vm/os-windows-nt.cpp

@@ -8,14 +8,6 @@ THREADHANDLE start_thread(void *(*start_routine)(void *), void *args)
 	return (void *)CreateThread(NULL, 0, (LPTHREAD_START_ROUTINE)start_routine, args, 0, 0);
 }
 
-u64 system_micros()
-{
-	FILETIME t;
-	GetSystemTimeAsFileTime(&t);
-	return (((u64)t.dwLowDateTime | (u64)t.dwHighDateTime<<32)
-		- EPOCH_OFFSET) / 10;
-}
-
 u64 nano_count()
 {
 	static double scale_factor;

vm/os-windows.hpp

@@ -45,7 +45,6 @@ typedef wchar_t vm_char;
 
 inline static void early_init() {}
 
-u64 system_micros();
 u64 nano_count();
 void sleep_nanos(u64 nsec);
 long getpagesize();

vm/primitives.hpp

@@ -125,7 +125,6 @@ namespace factor
 	_(special_object) \
 	_(string) \
 	_(strip_stack_traces) \
-	_(system_micros) \
 	_(tuple) \
 	_(tuple_boa) \
 	_(unimplemented) \

vm/run.cpp

@@ -8,11 +8,6 @@ void factor_vm::primitive_exit()
 	exit((int)to_fixnum(ctx->pop()));
 }
 
-void factor_vm::primitive_system_micros()
-{
-	ctx->push(from_unsigned_8(system_micros()));
-}
-
 void factor_vm::primitive_nano_count()
 {
 	u64 nanos = nano_count();

vm/vm.hpp

@@ -146,7 +146,6 @@ struct factor_vm
 
 	// run
 	void primitive_exit();
-	void primitive_system_micros();
 	void primitive_nano_count();
 	void primitive_sleep();
 	void primitive_set_slot();