Merge pull request #644 from philix/log

Macro-based log utility for Neovim

2 files changed, 36 insertions, 0 deletions

diff --git a/src/os/time.c b/src/os/time.c
index 0f7c990e23..1dc7ca68d4 100644
--- a/src/os/time.c
+++ b/src/os/time.c
@@ -1,5 +1,6 @@
 #include <stdint.h>
 #include <stdbool.h>
+#include <sys/time.h>
 
 #include <uv.h>
 
@@ -59,3 +60,27 @@ static void microdelay(uint64_t microseconds)
 
   uv_mutex_unlock(&delay_mutex);
 }
+
+struct tm *os_localtime_r(const time_t *clock, struct tm *result)
+{
+#ifdef UNIX
+  // POSIX provides localtime_r() as a thread-safe version of localtime().
+  return localtime_r(clock, result);
+#else
+  // Windows version of localtime() is thread-safe.
+  // See http://msdn.microsoft.com/en-us/library/bf12f0hc%28VS.80%29.aspx
+  struct tm *local_time = localtime(clock);  // NOLINT
+  *result = *local_time;
+return result;
+#endif
+}
+
+struct tm *os_get_localtime(struct tm *result)
+{
+  struct timeval tv;
+  if (gettimeofday(&tv, NULL) < 0) {
+    return NULL;
+  }
+
+  return os_localtime_r(&tv.tv_sec, result);
+}
diff --git a/src/os/time.h b/src/os/time.h
index 42feaa3eba..ef795d03be 100644
--- a/src/os/time.h
+++ b/src/os/time.h
@@ -19,6 +19,17 @@ void os_delay(uint64_t milliseconds, bool ignoreinput);
 /// @param ignoreinput If true, allow a SIGINT to interrupt us
 void os_microdelay(uint64_t microseconds, bool ignoreinput);
 
+/// Portable version of POSIX localtime_r()
+///
+/// @return NULL in case of error
+struct tm *os_localtime_r(const time_t *clock, struct tm *result);
+
+/// Obtains the current UNIX timestamp and adjusts it to local time
+///
+/// @param result Pointer to a 'struct tm' where the result should be placed
+/// @return A pointer to a 'struct tm' in the current time zone (the 'result'
+///         argument) or NULL in case of error
+struct tm *os_get_localtime(struct tm *result);
 
 #endif  // NEOVIM_OS_TIME_H