Small changes for print stack trace

src/VCluster/VCluster.cpp

+#define PRINT_STACKTRACE
+
 #include "VCluster.hpp"
 #include <execinfo.h>
 
+#include "util/print_stack.hpp"
+
 Vcluster * global_v_cluster_private = NULL;
 
 // number of vcluster instances
@@ -15,25 +19,12 @@ std::string program_name;
 // Segmentation fault signal handler
 void bt_sighandler(int sig, siginfo_t * info, void * ctx_p)
 {
-	void *trace[16];
-	char **messages = NULL;
-	int i, trace_size = 0;
-
 	if (sig == SIGSEGV)
 		std::cout << "Got signal " << sig << " faulty address is %p, " << info->si_addr << " from " << info->si_pid << std::endl;
 	else
 		std:: cout << "Got signal " << sig << std::endl;
 
-	trace_size = backtrace(trace, 16);
-	/* overwrite sigaction with caller's address */
-	trace[1] = (void *)info->si_addr;
-	messages = backtrace_symbols(trace, trace_size);
-	/* skip first stack frame (points here) */
-	printf("[bt] Execution path:\n");
-	for (i=1; i<trace_size; ++i)
-	{
-		printf("[bt] #%d %s\n", i, messages[i]);
-	}
+	print_stack();
 
 	exit(0);
 }