misc: Add routine to generate backtrace from within the application
E.g. to analyze the subscr_get/subscr_put behavior one can place
the generate_backtrace into the functions, recompile and then filter
the output with contrib/bt.py to get the function name, file and line.
diff --git a/openbsc/src/gsm_utils.c b/openbsc/src/gsm_utils.c
index de18dba..ddfd7f3 100644
--- a/openbsc/src/gsm_utils.c
+++ b/openbsc/src/gsm_utils.c
@@ -23,8 +23,10 @@
#include <openbsc/gsm_data.h>
#include <openbsc/gsm_utils.h>
+#include <execinfo.h>
#include <stdlib.h>
#include <string.h>
+#include <stdio.h>
#include <errno.h>
/* GSM 03.38 6.2.1 Charachter packing */
@@ -148,4 +150,21 @@
return -EINVAL;
}
+void generate_backtrace()
+{
+ int i, nptrs;
+ void *buffer[100];
+ char **strings;
+ nptrs = backtrace(buffer, ARRAY_SIZE(buffer));
+ printf("backtrace() returned %d addresses\n", nptrs);
+
+ strings = backtrace_symbols(buffer, nptrs);
+ if (!strings)
+ return;
+
+ for (i = 1; i < nptrs; i++)
+ printf("%s\n", strings[i]);
+
+ free(strings);
+}