ash: allow 'times' built-in to report process timing

Move existing code which obtains process execution times into a
separate function.  Use it to allow times(2) to report execution
times for the current process, though not child execution times.

Change TICKS_PER_SECOND from 100 to 1000 to increase the displayed
resolution of process times (though the measured resolution may
well be less than this).

Adds 48-80 bytes.

(GitHub issue #574)

2 files changed, 6 insertions, 3 deletions

diff --git a/include/libbb.h b/include/libbb.h
index ee3a5b56a..a73a04153 100644
--- a/include/libbb.h
+++ b/include/libbb.h
@@ -2435,6 +2435,9 @@ unsigned get_cpu_count(void) FAST_FUNC;
 unsigned long FAST_FUNC fast_strtoul_10(char **endptr);
 unsigned long long FAST_FUNC fast_strtoull_16(char **endptr);
 char* FAST_FUNC skip_fields(char *str, int count);
+#if ENABLE_PLATFORM_MINGW32
+void get_process_times(DWORD pid, procps_status_t* sp);
+#endif
 
 
 /* Use strict=1 if you process input from untrusted source:
diff --git a/include/mingw.h b/include/mingw.h
index a77aa35ac..ac824fd52 100644
--- a/include/mingw.h
+++ b/include/mingw.h
@@ -488,9 +488,9 @@ clock_t times(struct tms *buf);
 
 #define _SC_CLK_TCK 2
 
-#define TICKS_PER_SECOND 100
-#define MS_PER_TICK 10
-#define HNSEC_PER_TICK 100000
+#define TICKS_PER_SECOND 1000
+#define MS_PER_TICK 1
+#define HNSEC_PER_TICK 10000
 
 IMPL(alarm,unsigned int,0,unsigned int seconds UNUSED_PARAM);
 IMPL(chown,int,0,const char *path UNUSED_PARAM, uid_t uid UNUSED_PARAM, gid_t gid UNUSED_PARAM);