[gtk/matthiasc/perf-tests] Run the css performance test in the testsuite



commit 417edd28fb488e2cc723fc0e98fccf755253fb39
Author: Matthias Clasen <mclasen redhat com>
Date:   Tue Jan 21 17:49:40 2020 -0500

    Run the css performance test in the testsuite
    
    The numbers just end up in the testlog for now.

 testsuite/css/meson.build                        |   1 +
 testsuite/css/performance/meson.build            |   7 ++
 testsuite/css/performance/test-css-performance.c | 140 +++++++++++++++++++++++
 3 files changed, 148 insertions(+)
---
diff --git a/testsuite/css/meson.build b/testsuite/css/meson.build
index 98509c29ca..d5c6ab513b 100644
--- a/testsuite/css/meson.build
+++ b/testsuite/css/meson.build
@@ -2,6 +2,7 @@ subdir('parser')
 subdir('nodes')
 subdir('style')
 subdir('change')
+subdir('performance')
 
 testexecdir = join_paths(installed_test_bindir, 'css')
 testdatadir = join_paths(installed_test_datadir, 'css')
diff --git a/testsuite/css/performance/meson.build b/testsuite/css/performance/meson.build
new file mode 100644
index 0000000000..5a6a40ded2
--- /dev/null
+++ b/testsuite/css/performance/meson.build
@@ -0,0 +1,7 @@
+test_css_performance = executable('test-css-performance', 'test-css-performance.c',
+                                  dependencies: [profiler_dep, platform_gio_dep, libm])
+
+test('performance', test_css_performance,
+     args: [ join_paths(meson.current_build_dir(), '../../../demos/widget-factory/gtk4-widget-factory') ],
+     env: [ 'GTK_THEME=Adwaita' ],
+     suite: [ 'css' ])
diff --git a/testsuite/css/performance/test-css-performance.c 
b/testsuite/css/performance/test-css-performance.c
new file mode 100644
index 0000000000..27b9d623aa
--- /dev/null
+++ b/testsuite/css/performance/test-css-performance.c
@@ -0,0 +1,140 @@
+#include <stdio.h>
+#include <sysprof-capture.h>
+#include <gio/gio.h>
+
+typedef struct {
+  const char *group;
+  gint64 value;
+} Data;
+
+static gboolean
+callback (const SysprofCaptureFrame *frame,
+          gpointer              user_data)
+{
+  Data *data = user_data;
+
+  if (frame->type == SYSPROF_CAPTURE_FRAME_MARK)
+    {
+      SysprofCaptureMark *mark = (SysprofCaptureMark *)frame;
+      if (strcmp (mark->group, "gtk") == 0 &&
+          strcmp (mark->name, data->group) == 0)
+        {
+          data->value = mark->duration;
+          return FALSE;
+        }
+    }
+
+  return TRUE;
+}
+
+#define MILLISECONDS(v) ((v) / (1000.0 * G_TIME_SPAN_MILLISECOND))
+
+static int opt_rep = 10;
+
+static GOptionEntry options[] = {
+  { "runs", 'r', G_OPTION_FLAG_NONE, G_OPTION_ARG_INT, &opt_rep, "Number of runs", "COUNT" },
+  { NULL, }
+};
+
+int
+main (int argc, char *argv[])
+{
+  GOptionContext *context;
+  GError *error = NULL;
+  Data data;
+  SysprofCaptureFrameType type;
+  char fd_str[20];
+  gint64 *values;
+  gint64 min, max, total;
+  int i;
+
+  context = g_option_context_new ("COMMANDLINE");
+  g_option_context_add_main_entries (context, options, NULL);
+  if (!g_option_context_parse (context, &argc, &argv, &error))
+    g_error ("Parsing options: %s", error->message);
+
+  if (argc < 2)
+    {
+      g_print ("Usage: testperf [OPTIONS] COMMANDLINE\n");
+      exit (1);
+    }
+
+  if (opt_rep < 1)
+    g_error ("COUNT must be a positive number");
+
+  values = g_new (gint64, opt_rep);
+
+  for (i = 0; i < opt_rep; i++)
+    {
+      GSubprocessLauncher *launcher;
+      GSubprocess *subprocess;
+      int fd;
+      gchar *name;
+      SysprofCaptureReader *reader;
+      SysprofCaptureCursor *cursor;
+      SysprofCaptureCondition *condition;
+
+      fd = g_file_open_tmp ("gtk.XXXXXX.syscap", &name, &error);
+      if (error)
+        g_error ("Create syscap file: %s", error->message);
+
+      launcher = g_subprocess_launcher_new (0);
+      g_subprocess_launcher_take_fd (launcher, fd, fd);
+      g_snprintf (fd_str, sizeof (fd_str), "%d", fd);
+      g_subprocess_launcher_setenv (launcher, "GTK_TRACE_FD", fd_str, TRUE);
+      g_subprocess_launcher_setenv (launcher, "GTK_DEBUG_AUTO_QUIT", "1", TRUE);
+
+      subprocess = g_subprocess_launcher_spawnv (launcher, (const char *const *)argv + 1, &error);
+      if (error)
+        g_error ("Launch child: %s", error->message);
+
+      if (!g_subprocess_wait (subprocess, NULL, &error))
+        g_error ("Run child: %s", error->message);
+
+      g_object_unref (subprocess);
+      g_object_unref (launcher);
+
+      reader = sysprof_capture_reader_new (name, &error);
+      if (error)
+        g_error ("Opening syscap file: %s", error->message);
+
+      data.group = "style";
+      data.value = 0;
+
+      cursor = sysprof_capture_cursor_new (reader);
+
+      type = SYSPROF_CAPTURE_FRAME_MARK;
+      condition = sysprof_capture_condition_new_where_type_in (1, &type);
+      sysprof_capture_cursor_add_condition (cursor, condition);
+
+      sysprof_capture_cursor_foreach (cursor, callback, &data);
+
+      values[i] = data.value;
+
+      sysprof_capture_cursor_unref (cursor);
+      sysprof_capture_reader_unref (reader);
+
+      remove (name);
+
+      g_free (name);
+    }
+
+  min = G_MAXINT64;
+  max = 0;
+  total = 0;
+
+  for (i = 0; i < opt_rep; i++)
+    {
+      if (min > values[i])
+        min = values[i];
+      if (max < values[i])
+        max = values[i];
+      total += values[i];
+    }
+
+  g_print ("%d runs, min %g, max %g, avg %g\n",
+           opt_rep,
+           MILLISECONDS (min),
+           MILLISECONDS (max),
+           MILLISECONDS (total / opt_rep));
+}


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