corundum/corundum_bm: print current time on SIGUSR1

corundum/corundum_verilator.cpp

@@ -41,6 +41,11 @@ static void sigint_handler(int dummy)
     exiting = 1;
 }
 
+static void sigusr1_handler(int dummy)
+{
+    fprintf(stderr, "main_time = %lu\n", main_time);
+}
+
 double sc_time_stamp()
 {
     return main_time;
@@ -918,6 +923,7 @@ int main(int argc, char *argv[])
         "  sync_eth=" << nsparams.sync_eth << std::endl;
 
     signal(SIGINT, sigint_handler);
+    signal(SIGUSR1, sigusr1_handler);
 
 
     Vinterface *top = new Vinterface;

corundum_bm/corundum_bm.cc

@@ -755,12 +755,16 @@ using namespace corundum;
 
 static volatile int exiting = 0;
 
-static void
-sigint_handler(int dummy)
+static void sigint_handler(int dummy)
 {
     exiting = 1;
 }
 
+static void sigusr1_handler(int dummy)
+{
+    fprintf(stderr, "main_time = %lu\n", main_time);
+}
+
 static volatile union cosim_pcie_proto_d2h *
 d2h_alloc(void)
 {
@@ -978,6 +982,7 @@ int main(int argc, char *argv[])
 
 
     signal(SIGINT, sigint_handler);
+    signal(SIGUSR1, sigusr1_handler);
 
     struct cosim_pcie_proto_dev_intro di;
     memset(&di, 0, sizeof(di));