NuttX RTOS

git-svn-id: svn://svn.code.sf.net/p/nuttx/code/trunk@3 42af7a65-404d-4744-a932-0658087f49c3
2026-09-27 10:46:02 +08:00 · 2007-02-17 23:21:28 +00:00
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+/************************************************************
+ * time.h
+ *
+ *   Copyright (C) 2007 Gregory Nutt. All rights reserved.
+ *   Author: Gregory Nutt <spudmonkey@racsa.co.cr>
+ *
+ * Redistribution and use in source and binary forms, with or without
+ * modification, are permitted provided that the following conditions
+ * are met:
+ *
+ * 1. Redistributions of source code must retain the above copyright
+ *    notice, this list of conditions and the following disclaimer.
+ * 2. 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.
+ * 3. Neither the name Gregory Nutt nor the names of its contributors may be
+ *    used to endorse or promote products derived from this software
+ *    without specific prior written permission.
+ *
+ * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
+ * "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
+ * COPYRIGHT OWNER OR CONTRIBUTORS 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 _TIME_H_
+#define _TIME_H_
+
+/************************************************************
+ * Included Files
+ ************************************************************/
+
+#undef EXTERN
+#if defined(__cplusplus)
+#define EXTERN extern "C"
+extern "C" {
+#else
+#define EXTERN extern
+#endif
+
+/************************************************************
+ * Compilations Switches
+ ************************************************************/
+
+/************************************************************
+ * Definitions
+ ************************************************************/
+
+/* This must be set to the last known date */
+
+#define CURRENT_YEAR 2000
+#define CURRENT_MONTH   5
+#define CURRENT_DAY    22
+
+/* This is the only clock_id supported by the "Clock and Timer
+ * Functions."
+ */
+
+#define CLOCK_REALTIME 0
+
+/************************************************************
+ * Global Type Declarations
+ ************************************************************/
+
+typedef long time_t;
+typedef long clockid_t;
+
+struct timespec
+{
+  time_t tv_sec;                   /* Seconds */
+  long   tv_nsec;                  /* Nanoseconds */
+};
+
+struct timeval
+{
+  time_t tv_sec;                   /* Seconds */
+  long tv_usec;                    /* Microseconds */
+};
+
+struct tm
+{
+  int tm_sec;     /* second (0-61, allows for leap seconds) */
+  int tm_min;     /* minute (0-59) */
+  int tm_hour;    /* hour (0-23) */
+  int tm_mday;    /* day of the month (1-31) */
+  int tm_mon;     /* month (0-11) */
+  int tm_year;    /* years since 1900 */
+#if 0 /* not supported */
+  int tm_wday;    /* day of the week (0-6) */
+  int tm_yday;    /* day of the year (0-365) */
+  int tm_isdst;   /* non-0 if daylight savings time is in effect */
+#endif
+};
+
+/************************************************************
+ * Global Variables
+ ************************************************************/
+
+/************************************************************
+ * Global Function Prototypes
+ ************************************************************/
+
+EXTERN int clock_settime(clockid_t clock_id, const struct timespec *tp);
+EXTERN int clock_gettime(clockid_t clock_id, struct timespec *tp);
+EXTERN int clock_getres(clockid_t clock_id, struct timespec *res);
+
+EXTERN time_t mktime(struct tm *tp);
+EXTERN struct tm *gmtime_r(const time_t *clock, struct tm *result);
+#define localtime_r(c,r) gmtime_r(c,r)
+
+#undef EXTERN
+#if defined(__cplusplus)
+}
+#endif
+
+#endif  /* _TIME_H_ */