[XTF,3/6] time: add gettimeofday() function to time managment

Commit Message

Wieczorkiewicz, Pawel April 17, 2020, 7:05 a.m. UTC

From: Paul Semel <[e-mail]>

Signed-off-by: Paul Semel <[e-mail]>
---
 common/time.c      | 14 ++++++++++++++
 include/xtf/time.h | 12 ++++++++++++
 2 files changed, 26 insertions(+)

Patch

diff --git a/common/time.c b/common/time.c
index 7decd07..fffae1c 100644
--- a/common/time.c
+++ b/common/time.c
@@ -90,6 +90,20 @@  uint64_t current_time(void)
     return seconds + (since_boot_time() / 1000000000);
 }
 
+/* The POSIX gettimeofday syscall normally takes a second argument, which is
+ * the timezone (struct timezone). However, it sould be NULL because linux
+ * doesn't use it anymore. So we need for us to add it in this function
+ */
+int gettimeofday(struct timeval *tp)
+{
+    if (!tp)
+        return -1;
+
+    tp->sec = current_time();
+    tp->nsec = shared_info.wc_nsec + (since_boot_time() % 1000000000);
+    return 0;
+}
+
 /*
  * Local variables:
  * mode: C
diff --git a/include/xtf/time.h b/include/xtf/time.h
index 52da27a..e312465 100644
--- a/include/xtf/time.h
+++ b/include/xtf/time.h
@@ -8,6 +8,16 @@ 
 
 #include <xtf/types.h>
 
+struct timeval {
+#if !defined(__i386__)
+    uint64_t sec;
+    uint64_t nsec;
+#else
+    uint32_t sec;
+    uint32_t nsec;
+#endif
+};
+
 #if defined(__i386__)
 /* Time from boot in nanoseconds */
 uint32_t since_boot_time(void);
@@ -19,6 +29,8 @@  uint64_t since_boot_time(void);
 uint64_t current_time(void);
 #endif
 
+int gettimeofday(struct timeval *tp);
+
 #endif /* XTF_TIME_H */
 
 /*