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libsysprof-ui: show syscall stacks in red

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This commit is contained in:
Christian Hergert
2019-05-20 16:06:05 -07:00
parent 77b8edd1b2
commit 21ff550e1a
2 changed files with 43 additions and 7 deletions
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48
src/libsysprof-ui/sysprof-depth-visualizer-row.c
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@ -85,6 +85,26 @@ build_point_cache_cb (const SysprofCaptureFrame *frame,
x = (frame->time - st->begin_time) / (gdouble)st->duration;
y = sample->n_addrs / (gdouble)st->max_n_addrs;
/* If this contains a context-switch (meaning we're going into the kernel
* to do some work, use a negative value for Y so that we know later on
* that we should draw it with a different color (after removing the negation
* on the value.
*
* We skip past the first index, which is always a context switch as it is
* our perf handler.
*/
for (guint i = 1; i < sample->n_addrs; i++)
{
SysprofAddressContext kind;
if (sysprof_address_is_context_switch (sample->addrs[i], &kind))
{
y = -y;
break;
}
}
point_cache_add_point_to_set (st->pc, 1, x, y);
return TRUE;
@ -213,6 +233,7 @@ sysprof_depth_visualizer_row_draw (GtkWidget *widget,
if ((points = point_cache_get_points (self->points, 1, &n_points)))
{
g_autofree SysprofVisualizerRowAbsolutePoint *out_points = NULL;
gint last = 1;
//g_print ("Points : %p %d\n", points, n_points);
@ -221,14 +242,29 @@ sysprof_depth_visualizer_row_draw (GtkWidget *widget,
(const SysprofVisualizerRowRelativePoint *)points,
n_points, out_points, n_points);
for (guint i = 0; i < n_points; i++)
{
cairo_move_to (cr, alloc.x + (guint)out_points[i].x, alloc.height);
cairo_line_to (cr, alloc.x + (guint)out_points[i].x, out_points[i].y);
}
cairo_set_line_width (cr, 1.0);
cairo_set_source_rgb (cr, 0, 0, 0);
if (n_points > 0 && points[0].y < 0)
cairo_set_source_rgb (cr, 1, 0, 0);
for (guint i = 0; i < n_points; i++)
{
if ((points[i].y < 0 && last > 0) ||
(points[i].y > 0 && last < 0))
cairo_stroke (cr);
last = points[i].y > 0 ? 1 : -1;
cairo_move_to (cr, alloc.x + (guint)out_points[i].x, alloc.height);
cairo_line_to (cr, alloc.x + out_points[i].x, out_points[i].y);
if (last > 0)
cairo_set_source_rgb (cr, 0, 0, 0);
else
cairo_set_source_rgb (cr, 1, 0, 0);
}
cairo_stroke (cr);
}

2
src/libsysprof-ui/sysprof-visualizer-row.c
View File

@ -294,7 +294,7 @@ sysprof_visualizer_row_translate_points (SysprofVisualizerRow
for (guint i = 0; i < n_in_points; i++)
{
out_points[i].x = (in_points[i].x * graph_width);
out_points[i].y = alloc.height - (in_points[i].y * alloc.height);
out_points[i].y = alloc.height - (ABS (in_points[i].y) * alloc.height);
}
}