From: Alan Cox <alan@linux.intel.com>
Date: Fri, 2 Jan 2015 18:05:35 +0000 (+0000)
Subject: includes: Add more of the POSIX time interfaces
X-Git-Url: https://git.ndcode.org/public/gitweb.cgi?a=commitdiff_plain;h=ebcdf2d249a3bb9b7a45d5d2759f33a557197420;p=FUZIX.git

includes: Add more of the POSIX time interfaces
---

diff --git a/Library/include/sys/time.h b/Library/include/sys/time.h
index 76b0d39a..948d42a9 100644
--- a/Library/include/sys/time.h
+++ b/Library/include/sys/time.h
@@ -1 +1,48 @@
-#include <time.h>
\ No newline at end of file
+#ifndef _SYS_TIME_H
+#define _SYS_TIME_H
+
+#include <time.h>
+
+#ifdef _BSD_SOURCE
+
+typedef unsigned long suseconds_t;
+
+struct timeval {
+  time_t tv_sec;
+  suseconds_t tv_usec;
+};
+
+extern int gettimeofday(struct timeval *tv, struct timezone *tz);
+extern int settimeofday(struct timeval *tv, const struct timezone *tz);
+
+/* These are courtesy of Linux. Complete with the usual bugs. The only
+   change here is to use L for the long types. */
+# define timerisset(tvp)	((tvp)->tv_sec || (tvp)->tv_usec)
+# define timerclear(tvp)	((tvp)->tv_sec = (tvp)->tv_usec = 0)
+# define timercmp(a, b, CMP) 						      \
+  (((a)->tv_sec == (b)->tv_sec) ? 					      \
+   ((a)->tv_usec CMP (b)->tv_usec) : 					      \
+   ((a)->tv_sec CMP (b)->tv_sec))
+# define timeradd(a, b, result)						      \
+  do {									      \
+    (result)->tv_sec = (a)->tv_sec + (b)->tv_sec;			      \
+    (result)->tv_usec = (a)->tv_usec + (b)->tv_usec;			      \
+    if ((result)->tv_usec >= 1000000L)					      \
+      {									      \
+	++(result)->tv_sec;						      \
+	(result)->tv_usec -= 1000000L;					      \
+      }									      \
+  } while (0)
+# define timersub(a, b, result)						      \
+  do {									      \
+    (result)->tv_sec = (a)->tv_sec - (b)->tv_sec;			      \
+    (result)->tv_usec = (a)->tv_usec - (b)->tv_usec;			      \
+    if ((result)->tv_usec < 0) {					      \
+      --(result)->tv_sec;						      \
+      (result)->tv_usec += 1000000L;					      \
+    }									      \
+  } while (0)
+
+#endif	/* Berkleyisms */
+
+#endif
diff --git a/Library/include/time.h b/Library/include/time.h
index 0c9a24e0..2c8a5798 100644
--- a/Library/include/time.h
+++ b/Library/include/time.h
@@ -23,6 +23,11 @@ struct timezone {
 	int tz_dsttime; 	/* type of dst correction */
 };
 
+struct timespec {
+	time_t tv_sec;
+	long tv_nsec;
+};
+
 #define __isleap(year)	\
 	((year) % 4 == 0 && ((year) % 100 != 0 || (year) % 400 == 0))
 
@@ -46,5 +51,21 @@ extern struct tm *gmtime __P ((time_t *__tp));
 extern struct tm *localtime __P ((time_t * __tp));
 extern unsigned long convtime __P ((time_t *time_field));
 
+typedef int clockid_t;
+
 #define CLOCKS_PER_SEC	100		/* FIXME: sysconf */
+
+#define CLOCK_REALTIME	0
+#define CLOCK_MONOTONIC 1
+
+extern int clock_getres(clockid_t clk_id,  struct timespec *res);
+extern int clock_gettime(clockid_t clk_id,  struct timespec *tp);
+extern int clock_nanosleep(clockid_t clk_id, int flags,
+	const struct timespec *request, struct timespec *remain);
+extern int clock_settime(clockid_t clk_id,  const struct timespec *tp);
+
+#define TIMER_ABSTIME	1
+
+extern int nanosleep(const struct timespec *request, struct timespec *remain);
+
 #endif
diff --git a/Library/include/unistd.h b/Library/include/unistd.h
index 65cb3169..7f40c41d 100644
--- a/Library/include/unistd.h
+++ b/Library/include/unistd.h
@@ -93,6 +93,10 @@ extern long _pathconf __P((int name));
 #define _POSIX_CHOWN_RESTRICTED _pathconf(_PC_CHOWN_RESTRICTED)
 #define _POSIX_NO_TRUNC		_pathconf(_PC_NO_TRUNC)
 
+/* POSIX: show that the clock_ API is present */
+#define _POSIX_TIMERS
+#define _POSIX_MONTONIC_CLOCK
+
 extern int gethostname(char *name, size_t len);
 extern int sethostname(const char *name, size_t len);