source:
rtems/cpukit/score/src/coretodget.c
@
dd8815a
Last change on this file since dd8815a was f031df0e, checked in by Sebastian Huber <sebastian.huber@…>, on 07/31/13 at 11:42:07 | |
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File size: 1006 bytes |
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[355ee7d] | 1 | /** |
2 | * @file | |
[812da54] | 3 | * |
[355ee7d] | 4 | * @brief Returns a Current TOD with Nanosecond Granularity |
5 | * @ingroup ScoreTODConstants | |
6 | */ | |
7 | ||
8 | /* | |
[6a614160] | 9 | * COPYRIGHT (c) 1989-2008. |
[812da54] | 10 | * On-Line Applications Research Corporation (OAR). |
11 | * | |
12 | * The license and distribution terms for this file may be | |
13 | * found in the file LICENSE in this distribution or at | |
14 | * http://www.rtems.com/license/LICENSE. | |
15 | */ | |
16 | ||
17 | #if HAVE_CONFIG_H | |
[62181b21] | 18 | #include "config.h" |
[812da54] | 19 | #endif |
20 | ||
[f031df0e] | 21 | #include <rtems/score/todimpl.h> |
[88c74ab] | 22 | #include <rtems/score/isrlevel.h> |
[4b48ece0] | 23 | #include <rtems/score/watchdogimpl.h> |
[812da54] | 24 | |
[62181b21] | 25 | Timestamp_Control *_TOD_Get_with_nanoseconds( |
26 | Timestamp_Control *snapshot, | |
27 | const Timestamp_Control *clock | |
[812da54] | 28 | ) |
29 | { | |
[c16bcc0] | 30 | ISR_Level level; |
31 | Timestamp_Control offset; | |
32 | Timestamp_Control now; | |
[62181b21] | 33 | uint32_t nanoseconds; |
[812da54] | 34 | |
35 | _ISR_Disable( level ); | |
[18657d1] | 36 | nanoseconds = (*_Watchdog_Nanoseconds_since_tick_handler)(); |
[62181b21] | 37 | now = *clock; |
[812da54] | 38 | _ISR_Enable( level ); |
39 | ||
[c16bcc0] | 40 | _Timestamp_Set( &offset, 0, nanoseconds ); |
41 | _Timestamp_Add_to( &now, &offset ); | |
[8d7aea0d] | 42 | |
[62181b21] | 43 | *snapshot = now; |
44 | ||
45 | return snapshot; | |
[812da54] | 46 | } |
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