From: Robin Jarry <rjarry@redhat.com>
To: dev@dpdk.org, Jerin Jacob <jerinj@marvell.com>,
Kiran Kumar K <kirankumark@marvell.com>,
Nithin Dabilpuram <ndabilpuram@marvell.com>,
Zhirun Yan <yanzhirun_163@163.com>
Subject: [PATCH] graph: enhance export to graphviz
Date: Wed, 20 Mar 2024 18:11:21 +0100 [thread overview]
Message-ID: <20240320171120.255142-2-rjarry@redhat.com> (raw)
* Quote graph name to avoid parsing errors when it contains a dash.
* Use fixed margin and smaller font for a more compact layout.
* Use sans-serif font, the default is times new roman which is not the
best choice for a packet processing generated graph.
* Force bold blue border and arrows for source nodes.
* Force dark orange borders for sink nodes (nodes without next nodes).
Link: https://f.jarry.cc/rte-graph-dot/before.svg
Link: https://f.jarry.cc/rte-graph-dot/after.svg
Signed-off-by: Robin Jarry <rjarry@redhat.com>
---
lib/graph/graph.c | 32 +++++++++++++++++++++++++-------
1 file changed, 25 insertions(+), 7 deletions(-)
diff --git a/lib/graph/graph.c b/lib/graph/graph.c
index 26f0968a978d..147bc6c685c5 100644
--- a/lib/graph/graph.c
+++ b/lib/graph/graph.c
@@ -674,25 +674,43 @@ __rte_node_stream_alloc_size(struct rte_graph *graph, struct rte_node *node,
static int
graph_to_dot(FILE *f, struct graph *graph)
{
- const char *src_edge_color = " [color=blue]\n";
- const char *edge_color = "\n";
struct graph_node *graph_node;
char *node_name;
rte_edge_t i;
int rc;
- rc = fprintf(f, "Digraph %s {\n\trankdir=LR;\n", graph->name);
+ rc = fprintf(f, "digraph \"%s\" {\n\trankdir=LR;\n", graph->name);
+ if (rc < 0)
+ goto end;
+
+ rc = fprintf(f, "\tnode [margin=0.02 fontsize=11 fontname=sans];\n");
if (rc < 0)
goto end;
STAILQ_FOREACH(graph_node, &graph->node_list, next) {
+ const char *attrs = "";
node_name = graph_node->node->name;
+
+ rc = fprintf(f, "\t\"%s\"", node_name);
+ if (rc < 0)
+ goto end;
+ if (graph_node->node->flags & RTE_NODE_SOURCE_F) {
+ attrs = " [color=blue style=bold]";
+ rc = fprintf(f, "%s", attrs);
+ if (rc < 0)
+ goto end;
+ } else if (graph_node->node->nb_edges == 0) {
+ rc = fprintf(f, " [color=darkorange]");
+ if (rc < 0)
+ goto end;
+ }
+ rc = fprintf(f, ";\n");
+ if (rc < 0)
+ goto end;
for (i = 0; i < graph_node->node->nb_edges; i++) {
- rc = fprintf(f, "\t\"%s\"->\"%s\"%s", node_name,
+ rc = fprintf(f, "\t\"%s\" -> \"%s\"%s;\n", node_name,
graph_node->adjacency_list[i]->node->name,
- graph_node->node->flags & RTE_NODE_SOURCE_F
- ? src_edge_color
- : edge_color);
+ attrs);
if (rc < 0)
goto end;
}
--
2.44.0
next reply other threads:[~2024-03-20 17:11 UTC|newest]
Thread overview: 2+ messages / expand[flat|nested] mbox.gz Atom feed top
2024-03-20 17:11 Robin Jarry [this message]
2024-03-22 8:02 ` [EXTERNAL] " Kiran Kumar Kokkilagadda
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