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libsysprof: implement callgraph frame summaries

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This commit is contained in:
Christian Hergert
2023-07-20 17:02:56 -07:00
parent 0f70dd1d68
commit 90c6d87a8c
2 changed files with 63 additions and 3 deletions
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19
src/libsysprof/sysprof-callgraph-frame.c
View File

@ -519,6 +519,25 @@ static void
summarize_node (const SysprofCallgraphNode *node,
Summary *summaries)
{
if (node->is_toplevel &&
node->category != 0 &&
node->category != SYSPROF_CALLGRAPH_CATEGORY_PRESENTATION)
{
gboolean seen[SYSPROF_CALLGRAPH_CATEGORY_LAST] = {0};
seen[node->category & 0xFF] = TRUE;
summaries[node->category & 0xFF].count += node->count;
for (const SysprofCallgraphNode *parent = node->parent; parent; parent = parent->parent)
{
if (!seen[parent->category & 0xFF] && (parent->category & SYSPROF_CALLGRAPH_CATEGORY_INHERIT) != 0)
{
seen[parent->category & 0xFF] = TRUE;
summaries[parent->category & 0xFF].count += node->count;
}
}
}
for (const SysprofCallgraphNode *iter = node->children; iter; iter = iter->next)
summarize_node (iter, summaries);
}

47
src/libsysprof/tests/test-callgraph.c
View File

@ -35,9 +35,11 @@ typedef struct _Augment
static char *kallsyms_path;
static gboolean include_threads;
static GEnumClass *category_class;
static gboolean summary_only;
static const GOptionEntry entries[] = {
{ "kallsyms", 'k', 0, G_OPTION_ARG_FILENAME, &kallsyms_path, "The path to kallsyms to use for decoding", "PATH" },
{ "threads", 't', 0, G_OPTION_ARG_NONE, &include_threads, "Include threads in the stack traces" },
{ "summary", 's', 0, G_OPTION_ARG_NONE, &summary_only, "Only show summary" },
{ 0 }
};
@ -68,6 +70,42 @@ print_callgraph (GListModel *model,
}
}
static void
summarize_cb (GObject *object,
GAsyncResult *result,
gpointer user_data)
{
SysprofCallgraphFrame *frame = SYSPROF_CALLGRAPH_FRAME (object);
GMainLoop *main_loop = user_data;
g_autoptr(GError) error = NULL;
g_autoptr(GListModel) model = NULL;
guint n_items;
model = sysprof_callgraph_frame_summarize_finish (frame, result, &error);
g_assert_no_error (error);
g_assert_nonnull (model);
g_assert_true (G_IS_LIST_MODEL (model));
g_print ("\n\nSummary\n");
n_items = g_list_model_get_n_items (model);
for (guint i = 0; i < n_items; i++)
{
g_autoptr(SysprofCategorySummary) summary = g_list_model_get_item (model, i);
g_assert_nonnull (summary);
g_assert_true (SYSPROF_IS_CATEGORY_SUMMARY (summary));
g_print ("%s: %lf\n",
g_enum_to_string (SYSPROF_TYPE_CALLGRAPH_CATEGORY,
sysprof_category_summary_get_category (summary)),
sysprof_category_summary_get_fraction (summary));
}
g_main_loop_quit (main_loop);
}
static void
callgraph_cb (GObject *object,
GAsyncResult *result,
@ -86,10 +124,13 @@ callgraph_cb (GObject *object,
root = g_list_model_get_item (G_LIST_MODEL (callgraph), 0);
aug = sysprof_callgraph_frame_get_augment (root);
g_print (" Hits Percent\n");
print_callgraph (G_LIST_MODEL (callgraph), 0, aug->total);
if (!summary_only)
{
g_print (" Hits Percent\n");
print_callgraph (G_LIST_MODEL (callgraph), 0, aug->total);
}
g_main_loop_quit (main_loop);
sysprof_callgraph_frame_summarize_async (root, NULL, summarize_cb, main_loop);
}
static void