mirror of
https://github.com/kanjitalk755/macemu.git
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167 lines
3.1 KiB
C++
167 lines
3.1 KiB
C++
/*
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* timer_beos.cpp - Time Manager emulation, BeOS specific stuff
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*
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* Basilisk II (C) 1997-2008 Christian Bauer
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*
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* This program is free software; you can redistribute it and/or modify
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* it under the terms of the GNU General Public License as published by
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* the Free Software Foundation; either version 2 of the License, or
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* (at your option) any later version.
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*
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* This program is distributed in the hope that it will be useful,
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* but WITHOUT ANY WARRANTY; without even the implied warranty of
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* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
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* GNU General Public License for more details.
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*
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* You should have received a copy of the GNU General Public License
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* along with this program; if not, write to the Free Software
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* Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA
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*/
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#include <KernelKit.h>
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#include "sysdeps.h"
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#include "macos_util.h"
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#include "timer.h"
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#define DEBUG 0
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#include "debug.h"
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// From main_beos.cpp
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extern thread_id emul_thread;
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/*
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* Return microseconds since boot (64 bit)
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*/
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void Microseconds(uint32 &hi, uint32 &lo)
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{
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D(bug("Microseconds\n"));
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bigtime_t time = system_time();
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hi = time >> 32;
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lo = time;
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}
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/*
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* Return local date/time in Mac format (seconds since 1.1.1904)
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*/
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uint32 TimerDateTime(void)
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{
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return TimeToMacTime(time(NULL));
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}
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/*
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* Get current time
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*/
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void timer_current_time(tm_time_t &t)
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{
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t = system_time();
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}
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/*
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* Add times
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*/
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void timer_add_time(tm_time_t &res, tm_time_t a, tm_time_t b)
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{
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res = a + b;
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}
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/*
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* Subtract times
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*/
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void timer_sub_time(tm_time_t &res, tm_time_t a, tm_time_t b)
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{
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res = a - b;
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}
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/*
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* Compare times (<0: a < b, =0: a = b, >0: a > b)
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*/
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int timer_cmp_time(tm_time_t a, tm_time_t b)
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{
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tm_time_t r = a - b;
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return r < 0 ? -1 : (r > 0 ? 1 : 0);
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}
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/*
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* Convert Mac time value (>0: microseconds, <0: microseconds) to tm_time_t
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*/
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void timer_mac2host_time(tm_time_t &res, int32 mactime)
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{
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if (mactime > 0)
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res = mactime * 1000; // Time in milliseconds
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else
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res = -mactime; // Time in negative microseconds
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}
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/*
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* Convert positive tm_time_t to Mac time value (>0: microseconds, <0: microseconds)
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* A negative input value for hosttime results in a zero return value
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* As long as the microseconds value fits in 32 bit, it must not be converted to milliseconds!
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*/
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int32 timer_host2mac_time(tm_time_t hosttime)
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{
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if (hosttime < 0)
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return 0;
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else if (hosttime > 0x7fffffff)
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return hosttime / 1000; // Time in milliseconds
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else
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return -hosttime; // Time in negative microseconds
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}
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/*
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* Delay by specified number of microseconds (<1 second)
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*/
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void Delay_usec(uint32 usec)
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{
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snooze(usec);
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}
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/*
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* Suspend emulator thread, virtual CPU in idle mode
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*/
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void idle_wait(void)
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{
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#if 0
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/*
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FIXME: add a semaphore (counter) to avoid a B_BAD_THREAD_STATE
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return if we call idle_resume() when thread is not suspended?
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Sorry, I can't test -- gb.
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*/
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suspend_thread(emul_thread);
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#endif
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}
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/*
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* Resume execution of emulator thread, events just arrived
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*/
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void idle_resume(void)
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{
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#if 0
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resume_thread(emul_thread);
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#endif
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}
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