uhd: Remove usage of time_t (except when required)

The C/C++ standards don't define what time_t is, only that it is
arithmetic (and real for C11, and integral for C++). It should not be
used in portable software and is only used as the return value for some
libc calls.
A common definition for time_t is int64_t, so we'll switch to that
permanently in our own APIs. System APIs will of course stick with
time_t.

3 files changed, 18 insertions, 16 deletions

diff --git a/host/include/uhd/types/metadata.h b/host/include/uhd/types/metadata.h
index a711731d4..623adb77f 100644
--- a/host/include/uhd/types/metadata.h
+++ b/host/include/uhd/types/metadata.h
@@ -113,7 +113,7 @@ UHD_API uhd_error uhd_rx_metadata_has_time_spec(
 //! Time of first sample
 UHD_API uhd_error uhd_rx_metadata_time_spec(
     uhd_rx_metadata_handle h,
-    time_t *full_secs_out,
+    int64_t *full_secs_out,
     double *frac_secs_out
 );
 
@@ -212,7 +212,7 @@ UHD_API uhd_error uhd_rx_metadata_last_error(
 UHD_API uhd_error uhd_tx_metadata_make(
     uhd_tx_metadata_handle* handle,
     bool has_time_spec,
-    time_t full_secs,
+    int64_t full_secs,
     double frac_secs,
     bool start_of_burst,
     bool end_of_burst
@@ -236,7 +236,7 @@ UHD_API uhd_error uhd_tx_metadata_has_time_spec(
 //! Get time specification
 UHD_API uhd_error uhd_tx_metadata_time_spec(
     uhd_tx_metadata_handle h,
-    time_t *full_secs_out,
+    int64_t *full_secs_out,
     double *frac_secs_out
 );
 
@@ -316,7 +316,7 @@ UHD_API uhd_error uhd_async_metadata_has_time_spec(
 //! Get time specification
 UHD_API uhd_error uhd_async_metadata_time_spec(
     uhd_async_metadata_handle h,
-    time_t *full_secs_out,
+    int64_t *full_secs_out,
     double *frac_secs_out
 );
 
diff --git a/host/include/uhd/types/time_spec.hpp b/host/include/uhd/types/time_spec.hpp
index 32810c6e9..54fd9d379 100644
--- a/host/include/uhd/types/time_spec.hpp
+++ b/host/include/uhd/types/time_spec.hpp
@@ -40,7 +40,7 @@ namespace uhd{
          * \param full_secs the whole/integer seconds count
          * \param frac_secs the fractional seconds count (default = 0)
          */
-        time_spec_t(time_t full_secs, double frac_secs = 0);
+        time_spec_t(int64_t full_secs, double frac_secs = 0);
 
         /*!
          * Create a time_spec_t from whole seconds and fractional ticks.
@@ -49,7 +49,7 @@ namespace uhd{
          * \param tick_count the fractional seconds tick count
          * \param tick_rate the number of ticks per second
          */
-        time_spec_t(time_t full_secs, long tick_count, double tick_rate);
+        time_spec_t(int64_t full_secs, long tick_count, double tick_rate);
 
         /*!
          * Create a time_spec_t from a 64-bit tick count.
@@ -87,7 +87,7 @@ namespace uhd{
          * Get the whole/integer part of the time in seconds.
          * \return the whole/integer seconds
          */
-        time_t get_full_secs(void) const;
+        int64_t get_full_secs(void) const;
 
         /*!
          * Get the fractional part of the time in seconds.
@@ -104,7 +104,9 @@ namespace uhd{
         time_spec_t &operator-=(const time_spec_t &);
 
     //private time storage details
-    private: time_t _full_secs; double _frac_secs;
+    private:
+        int64_t _full_secs;
+        double _frac_secs;
     };
 
     //! Implement equality_comparable interface
@@ -113,7 +115,7 @@ namespace uhd{
     //! Implement less_than_comparable interface
     UHD_API bool operator<(const time_spec_t &, const time_spec_t &);
 
-    UHD_INLINE time_t time_spec_t::get_full_secs(void) const{
+    UHD_INLINE int64_t time_spec_t::get_full_secs(void) const{
         return this->_full_secs;
     }
 
diff --git a/host/include/uhd/usrp/usrp.h b/host/include/uhd/usrp/usrp.h
index f8f81cc31..0ede389ef 100644
--- a/host/include/uhd/usrp/usrp.h
+++ b/host/include/uhd/usrp/usrp.h
@@ -83,7 +83,7 @@ typedef struct {
     //! Stream now?
     bool stream_now;
     //! If not now, then full seconds into future to stream
-    time_t time_spec_full_secs;
+    int64_t time_spec_full_secs;
     //! If not now, then fractional seconds into future to stream
     double time_spec_frac_secs;
 } uhd_stream_cmd_t;
@@ -416,7 +416,7 @@ UHD_API uhd_error uhd_usrp_get_mboard_name(
 UHD_API uhd_error uhd_usrp_get_time_now(
     uhd_usrp_handle h,
     size_t mboard,
-    time_t *full_secs_out,
+    int64_t *full_secs_out,
     double *frac_secs_out
 );
 
@@ -427,7 +427,7 @@ UHD_API uhd_error uhd_usrp_get_time_now(
 UHD_API uhd_error uhd_usrp_get_time_last_pps(
     uhd_usrp_handle h,
     size_t mboard,
-    time_t *full_secs_out,
+    int64_t *full_secs_out,
     double *frac_secs_out
 );
 
@@ -437,7 +437,7 @@ UHD_API uhd_error uhd_usrp_get_time_last_pps(
  */
 UHD_API uhd_error uhd_usrp_set_time_now(
     uhd_usrp_handle h,
-    time_t full_secs,
+    int64_t full_secs,
     double frac_secs,
     size_t mboard
 );
@@ -448,7 +448,7 @@ UHD_API uhd_error uhd_usrp_set_time_now(
  */
 UHD_API uhd_error uhd_usrp_set_time_next_pps(
     uhd_usrp_handle h,
-    time_t full_secs,
+    int64_t full_secs,
     double frac_secs,
     size_t mboard
 );
@@ -459,7 +459,7 @@ UHD_API uhd_error uhd_usrp_set_time_next_pps(
  */
 UHD_API uhd_error uhd_usrp_set_time_unknown_pps(
     uhd_usrp_handle h,
-    time_t full_secs,
+    int64_t full_secs,
     double frac_secs
 );
 
@@ -475,7 +475,7 @@ UHD_API uhd_error uhd_usrp_get_time_synchronized(
  */
 UHD_API uhd_error uhd_usrp_set_command_time(
     uhd_usrp_handle h,
-    time_t full_secs,
+    int64_t full_secs,
     double frac_secs,
     size_t mboard
 );