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preload: skip an additional stack frame

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Now that we do some math here, we need to skip another frame to keep this
more useful and not show everything inside of sysprof_collector_allocate().
This commit is contained in:
Christian Hergert
2020-02-18 14:11:09 -08:00
parent 0d6a3d0183
commit 87004f5d24
1 changed files with 4 additions and 4 deletions
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8
src/libsysprof/preload/sysprof-memory-collector.c
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@ -82,9 +82,9 @@ backtrace_func (SysprofCaptureAddress *addrs,
* and subtract an offset from addrs to avoid having to * and subtract an offset from addrs to avoid having to
* copy frame pointers around. * copy frame pointers around.
*/ */
return unw_backtrace ((void **)addrs - 1, n_addrs) - 1; return unw_backtrace ((void **)addrs - 2, n_addrs) - 2;
# else # else
static const gint skip = 1; static const gint skip = 2;
void **stack = alloca (n_addrs * sizeof (gpointer)); void **stack = alloca (n_addrs * sizeof (gpointer));
gint n = unw_backtrace (stack, n_addrs); gint n = unw_backtrace (stack, n_addrs);
for (guint i = skip; i < n; i++) for (guint i = skip; i < n; i++)
@ -94,9 +94,9 @@ backtrace_func (SysprofCaptureAddress *addrs,
#elif defined(HAVE_EXECINFO_H) #elif defined(HAVE_EXECINFO_H)
# if GLIB_SIZEOF_VOID_P == 8 # if GLIB_SIZEOF_VOID_P == 8
/* See note on unw_backtrace() */ /* See note on unw_backtrace() */
return backtrace ((void **)addrs - 1, n_addrs) - 1; return backtrace ((void **)addrs - 2, n_addrs) - 2;
# else /* GLIB_SIZEOF_VOID_P != 8 */ # else /* GLIB_SIZEOF_VOID_P != 8 */
static const gint skip = 1; static const gint skip = 2;
void **stack = alloca (n_addrs * sizeof (gpointer)); void **stack = alloca (n_addrs * sizeof (gpointer));
gint n = backtrace (stack, n_addrs); gint n = backtrace (stack, n_addrs);
for (guint i = skip; i < n; i++) for (guint i = skip; i < n; i++)