From b31dc88d0dd57f9e744781e83c846984f47f740f Mon Sep 17 00:00:00 2001
From: Mark Pizzolato <mark@infocomm.com>
Date: Thu, 14 Mar 2013 11:37:31 -0700
Subject: [PATCH] Added indication of idle/throttling capabilities and the OS
 clock tick size to the SHOW VERSION output

---
 scp.c       | 5 +++++
 sim_timer.c | 9 +++++++++
 sim_timer.h | 1 +
 3 files changed, 15 insertions(+)

diff --git a/scp.c b/scp.c
index 4d45c467..135ea65e 100644
--- a/scp.c
+++ b/scp.c
@@ -2745,10 +2745,14 @@ if (vdelt)
 fprintf (st, " %s", SIM_VERSION_MODE);
 #endif
 if (flag) {
+    uint32 idle_capable, os_tick_size;
+
     fprintf (st, "\n\tSimulator Framework Capabilities:");
     fprintf (st, "\n\t\t%s", sim_si64);
     fprintf (st, "\n\t\t%s", sim_sa64);
     fprintf (st, "\n\t\t%s", sim_snet);
+    idle_capable = sim_timer_idle_capable (&os_tick_size);
+    fprintf (st, "\n\t\tIdle/Throttling support is %savailable", ((idle_capable == 0) ? "NOT " : ""));
     fprintf (st, "\n\t\t%s", sim_taddr_64 ? "Large File (>2GB) support" : "No Large File support");
     if (sim_disk_vhd_support())
         fprintf (st, "\n\t\tVirtual Hard Disk (VHD) support");
@@ -2775,6 +2779,7 @@ if (flag) {
     fflush (st);
     system ("uname -a");
 #endif
+    fprintf (st, "\n\t\tOS clock tick size: %dms", os_tick_size);
     }
 #if defined(SIM_GIT_COMMIT_ID)
 #define S_xstr(a) S_str(a)
diff --git a/sim_timer.c b/sim_timer.c
index c2429225..e43cb3dc 100644
--- a/sim_timer.c
+++ b/sim_timer.c
@@ -699,6 +699,15 @@ sim_idle_rate_ms = sim_os_ms_sleep_init ();             /* get OS timer rate */
 return (sim_idle_rate_ms != 0);
 }
 
+/* sim_timer_idle_capable - tell if the host is Idle capable and what the host OS tick size is */
+
+uint32 sim_timer_idle_capable (uint32 *hoat_tick_ms)
+{
+if (hoat_tick_ms)
+    *hoat_tick_ms = sim_os_sleep_min_ms;
+return sim_idle_rate_ms;
+}
+
 /* sim_show_timers - show running timer information */
 
 t_stat sim_show_timers (FILE* st, DEVICE *dptr, UNIT* uptr, int32 val, char* desc)
diff --git a/sim_timer.h b/sim_timer.h
index f12c935f..d5f7981c 100644
--- a/sim_timer.h
+++ b/sim_timer.h
@@ -115,6 +115,7 @@ t_stat sim_timer_activate_after (UNIT *uptr, int32 usec_delay);
 t_stat sim_register_clock_unit (UNIT *uptr);
 t_stat sim_clock_coschedule (UNIT *uptr, int32 interval);
 double sim_timer_inst_per_sec (void);
+uint32 sim_timer_idle_capable (uint32 *hoat_tick_ms);
 
 extern t_bool sim_idle_enab;                        /* idle enabled flag */
 extern volatile t_bool sim_idle_wait;               /* idle waiting flag */