/uspace/trunk/libc/include/time.h |
---|
0,0 → 1,51 |
/* |
* Copyright (C) 2006 Ondrej Palkovsky |
* All rights reserved. |
* |
* Redistribution and use in source and binary forms, with or without |
* modification, are permitted provided that the following conditions |
* are met: |
* |
* - Redistributions of source code must retain the above copyright |
* notice, this list of conditions and the following disclaimer. |
* - Redistributions in binary form must reproduce the above copyright |
* notice, this list of conditions and the following disclaimer in the |
* documentation and/or other materials provided with the distribution. |
* - The name of the author may not be used to endorse or promote products |
* derived from this software without specific prior written permission. |
* |
* THIS SOFTWARE IS PROVIDED BY THE AUTHOR ``AS IS'' AND ANY EXPRESS OR |
* IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES |
* OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED. |
* IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR ANY DIRECT, INDIRECT, |
* INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT |
* NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, |
* DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY |
* THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT |
* (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF |
* THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE. |
*/ |
#ifndef __libc_TIME_H__ |
#define __libc_TIME_H__ |
#include <types.h> |
#define DST_NONE 0 |
typedef sysarg_t time_t; |
typedef sysarg_t suseconds_t; |
struct timeval { |
time_t tv_sec; /* seconds */ |
suseconds_t tv_usec; /* microseconds */ |
}; |
struct timezone { |
int tz_minuteswest; /* minutes W of Greenwich */ |
int tz_dsttime; /* type of dst correction */ |
}; |
int gettimeofday(struct timeval *tv, struct timezone *tz); |
#endif |
/uspace/trunk/libc/include/ipc/services.h |
---|
39,4 → 39,7 |
#define SERVICE_KEYBOARD 3 |
#define SERVICE_VIDEO 4 |
/* Memory area to be received from NS */ |
#define SERVICE_MEM_REALTIME 1 |
#endif |
/uspace/trunk/libc/generic/time.c |
---|
0,0 → 1,96 |
/* |
* Copyright (C) 2006 Ondrej Palkovsky |
* All rights reserved. |
* |
* Redistribution and use in source and binary forms, with or without |
* modification, are permitted provided that the following conditions |
* are met: |
* |
* - Redistributions of source code must retain the above copyright |
* notice, this list of conditions and the following disclaimer. |
* - Redistributions in binary form must reproduce the above copyright |
* notice, this list of conditions and the following disclaimer in the |
* documentation and/or other materials provided with the distribution. |
* - The name of the author may not be used to endorse or promote products |
* derived from this software without specific prior written permission. |
* |
* THIS SOFTWARE IS PROVIDED BY THE AUTHOR ``AS IS'' AND ANY EXPRESS OR |
* IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES |
* OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED. |
* IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR ANY DIRECT, INDIRECT, |
* INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT |
* NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, |
* DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY |
* THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT |
* (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF |
* THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE. |
*/ |
#include <time.h> |
#include <unistd.h> |
#include <ipc/ipc.h> |
#include <stdio.h> |
#include <arch/barrier.h> |
#include <sysinfo.h> |
#include <as.h> |
#include <ddi.h> |
/* Pointers to public variables with time */ |
struct { |
volatile sysarg_t seconds; |
volatile sysarg_t useconds; |
volatile sysarg_t useconds2; |
} *ktime = NULL; |
/** POSIX gettimeofday |
* |
* The time variables are memory mapped(RO) from kernel, which updates |
* them periodically. As it is impossible to read 2 values atomically, we |
* use a trick: First read a seconds, then read microseconds, then |
* read seconds again. If a second elapsed in the meantime, read |
* useconds again. This provides assurance, that at least the |
* sequence of subsequent gettimeofday calls is ordered. |
*/ |
#define TMAREA (100*1024*1024) |
int gettimeofday(struct timeval *tv, struct timezone *tz) |
{ |
void *mapping; |
sysarg_t seconds,useconds; |
sysarg_t t1; |
int res; |
if (!ktime) { |
/* TODO: specify better, where to map the area */ |
/* Get the mapping of kernel clock */ |
res = ipc_call_sync_3(PHONE_NS, IPC_M_AS_AREA_RECV, |
TMAREA, |
PAGE_SIZE, |
AS_AREA_READ | AS_AREA_CACHEABLE, |
&t1,&t1,&t1); |
if (res) { |
printf("Failed to initialize timeofday memarea\n"); |
_exit(1); |
} |
ktime = (void *) (TMAREA); |
} |
tz->tz_minuteswest = 0; |
tz->tz_dsttime = DST_NONE; |
retry: |
seconds = ktime->seconds; |
read_barrier(); |
tv->tv_usec = ktime->useconds; |
read_barrier(); |
tv->tv_sec = ktime->seconds; |
if (tv->tv_usec == 0 && seconds == tv->tv_sec && |
ktime->useconds2 != 0) { |
read_barrier(); |
goto retry; |
} |
if (seconds != tv->tv_sec) |
tv->tv_usec = ktime->useconds; |
return 0; |
} |
/uspace/trunk/libc/generic/async.c |
---|
331,6 → 331,7 |
{ |
ipc_call_t call; |
ipc_callid_t callid; |
int timeout; |
while (1) { |
if (psthread_schedule_next_adv(PS_FROM_MANAGER)) { |
339,8 → 340,19 |
*/ |
continue; |
} |
callid = ipc_wait_cycle(&call,SYNCH_NO_TIMEOUT,SYNCH_BLOCKING); |
/* |
if (expires) |
timeout = .... ; |
else |
*/ |
timeout = SYNCH_NO_TIMEOUT; |
callid = ipc_wait_cycle(&call, timeout, SYNCH_BLOCKING); |
if (!callid) { |
// handle_expired_timeouts.......; |
continue; |
} |
if (callid & IPC_CALLID_ANSWERED) |
continue; |
405,6 → 417,7 |
if (msg->dataptr) |
*msg->dataptr = *data; |
/* TODO: memory barrier?? */ |
msg->done = 1; |
if (! msg->active) { |
msg->active = 1; |
460,3 → 473,38 |
*retval = msg->retval; |
free(msg); |
} |
/* int async_wait_timeout(aid_t amsgid, ipcarg_t *retval, int timeout) */ |
/* { */ |
/* amsg_t *msg = (amsg_t *) amsgid; */ |
/* connection_t *conn; */ |
/* futex_down(&async_futex); */ |
/* if (msg->done) { */ |
/* futex_up(&async_futex); */ |
/* goto done; */ |
/* } */ |
/* msg->ptid = psthread_get_id(); */ |
/* msg->active = 0; */ |
/* msg->expires = gettime() + timeout; */ |
/* setup_timeouts_etc...(); */ |
/* /\* Leave locked async_futex when entering this function *\/ */ |
/* psthread_schedule_next_adv(PS_TO_MANAGER); */ |
/* /\* futex is up automatically after psthread_schedule_next...*\/ */ |
/* if (!msg->done) */ |
/* return casy-casy; */ |
/* /\* TODO: When memory barrier in reply_received, we can skip this *\/ */ |
/* futex_down(&async_futex); */ |
/* futex_up(&async_futex); */ |
/* done: */ |
/* if (retval) */ |
/* *retval = msg->retval; */ |
/* free(msg); */ |
/* } */ |
/uspace/trunk/libc/Makefile |
---|
65,7 → 65,8 |
generic/ipc.c \ |
generic/async.c \ |
generic/libadt/list.o \ |
generic/libadt/hash_table.o |
generic/libadt/hash_table.o \ |
generic/time.c |
ARCH_SOURCES += \ |
arch/$(ARCH)/src/entry.s \ |