stdlib: Add a Time module to the standard library

src/lib/Time.rs

@@ -0,0 +1,12 @@
+native "rust" mod rustrt {
+    fn get_time(&mutable u32 sec, &mutable u32 usec);
+}
+
+type timeval = rec(u32 sec, u32 usec);
+
+fn get_time() -> timeval {
+    let timeval res = rec(sec=0u32, usec=0u32);
+    rustrt.get_time(res.sec, res.usec);
+    ret res;
+}
+

src/lib/std.rc

@@ -76,6 +76,7 @@ mod ExtFmt;
 mod Box;
 mod GetOpts;
 mod Term;
+mod Time;
 
 // Local Variables:
 // mode: rust;

src/rt/rust_builtin.cpp

@@ -1,6 +1,10 @@
 
 #include "rust_internal.h"
 
+#if !defined(__WIN32__)
+#include <sys/time.h>
+#endif
+
 /* Native builtins. */
 
 extern "C" CDECL rust_str*
@@ -508,6 +512,31 @@ rust_ptr_eq(rust_task *task, type_desc *t, rust_box *a, rust_box *b) {
     return a == b;
 }
 
+#if defined(__WIN32__)
+extern "C" CDECL void
+get_time(rust_task *task, uint32_t *sec, uint32_t *usec) {
+    SYSTEMTIME systemTime;
+    FILETIME fileTime;
+    GetSystemTime(&systemTime);
+    if (!SystemTimeToFileTime(&systemTime, &fileTime)) {
+        task->fail(1);
+        return;
+    }
+
+    // FIXME: This is probably completely wrong.
+    *sec = fileTime.dwHighDateTime;
+    *usec = fileTime.dwLowDateTime;
+}
+#else
+extern "C" CDECL void
+get_time(rust_task *task, uint32_t *sec, uint32_t *usec) {
+    struct timeval tv;
+    gettimeofday(&tv, NULL);
+    *sec = tv.tv_sec;
+    *usec = tv.tv_usec;
+}
+#endif
+
 //
 // Local Variables:
 // mode: C++

src/rt/rustrt.def.in

@@ -8,6 +8,7 @@ debug_tag
 debug_trap
 debug_tydesc
 do_gc
+get_time
 last_os_error
 rand_free
 rand_new