libsysprof-profiler: add scaffolding for disk usage

This still needs porting from libsysprof, but this gets the scaffolding in
place to bring over those counters.

src/libsysprof-profile/meson.build

@@ -1,5 +1,6 @@
 libsysprof_profile_public_sources = [
   'sysprof-cpu-usage.c',
+  'sysprof-disk-usage.c',
   'sysprof-instrument.c',
   'sysprof-network-usage.c',
   'sysprof-profiler.c',
@@ -17,8 +18,9 @@ libsysprof_profile_private_sources = [
 libsysprof_profile_public_headers = [
   'sysprof-profile.h',
 
-  'sysprof-instrument.h',
   'sysprof-cpu-usage.h',
+  'sysprof-disk-usage.h',
+  'sysprof-instrument.h',
   'sysprof-network-usage.h',
   'sysprof-profiler.h',
   'sysprof-recording.h',

src/libsysprof-profile/sysprof-disk-usage.c

@@ -0,0 +1,67 @@
+/* sysprof-disk-usage.c
+ *
+ * Copyright 2023 Christian Hergert <chergert@redhat.com>
+ *
+ * This program is free software: you can redistribute it and/or modify
+ * it under the terms of the GNU General Public License as published by
+ * the Free Software Foundation, either version 3 of the License, or
+ * (at your option) any later version.
+ *
+ * This program is distributed in the hope that it will be useful,
+ * but WITHOUT ANY WARRANTY; without even the implied warranty of
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+ * GNU General Public License for more details.
+ *
+ * You should have received a copy of the GNU General Public License
+ * along with this program.  If not, see <http://www.gnu.org/licenses/>.
+ *
+ * SPDX-License-Identifier: GPL-3.0-or-later
+ */
+
+#include "config.h"
+
+#include "sysprof-disk-usage.h"
+#include "sysprof-instrument-private.h"
+
+struct _SysprofDiskUsage
+{
+  SysprofInstrument parent_instance;
+};
+
+struct _SysprofDiskUsageClass
+{
+  SysprofInstrumentClass parent_class;
+};
+
+G_DEFINE_FINAL_TYPE (SysprofDiskUsage, sysprof_disk_usage, SYSPROF_TYPE_INSTRUMENT)
+
+static DexFuture *
+sysprof_disk_usage_record (SysprofInstrument *instrument,
+                           SysprofRecording  *recording,
+                           GCancellable      *cancellable)
+{
+  g_assert (SYSPROF_IS_INSTRUMENT (instrument));
+  g_assert (SYSPROF_IS_RECORDING (recording));
+  g_assert (G_IS_CANCELLABLE (cancellable));
+
+  return dex_future_new_for_boolean (TRUE);
+}
+
+static void
+sysprof_disk_usage_class_init (SysprofDiskUsageClass *klass)
+{
+  SysprofInstrumentClass *instrument_class = SYSPROF_INSTRUMENT_CLASS (klass);
+
+  instrument_class->record = sysprof_disk_usage_record;
+}
+
+static void
+sysprof_disk_usage_init (SysprofDiskUsage *self)
+{
+}
+
+SysprofInstrument *
+sysprof_disk_usage_new (void)
+{
+  return g_object_new (SYSPROF_TYPE_DISK_USAGE, NULL);
+}

src/libsysprof-profile/sysprof-disk-usage.h

@@ -0,0 +1,42 @@
+/* sysprof-disk-usage.h
+ *
+ * Copyright 2023 Christian Hergert <chergert@redhat.com>
+ *
+ * This program is free software: you can redistribute it and/or modify
+ * it under the terms of the GNU General Public License as published by
+ * the Free Software Foundation, either version 3 of the License, or
+ * (at your option) any later version.
+ *
+ * This program is distributed in the hope that it will be useful,
+ * but WITHOUT ANY WARRANTY; without even the implied warranty of
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+ * GNU General Public License for more details.
+ *
+ * You should have received a copy of the GNU General Public License
+ * along with this program.  If not, see <http://www.gnu.org/licenses/>.
+ *
+ * SPDX-License-Identifier: GPL-3.0-or-later
+ */
+
+#pragma once
+
+#include "sysprof-instrument.h"
+
+G_BEGIN_DECLS
+
+#define SYSPROF_TYPE_DISK_USAGE         (sysprof_disk_usage_get_type())
+#define SYSPROF_IS_DISK_USAGE(obj)      G_TYPE_CHECK_INSTANCE_TYPE(obj, SYSPROF_TYPE_DISK_USAGE)
+#define SYSPROF_DISK_USAGE(obj)         G_TYPE_CHECK_INSTANCE_CAST(obj, SYSPROF_TYPE_DISK_USAGE, SysprofDiskUsage)
+#define SYSPROF_DISK_USAGE_CLASS(klass) G_TYPE_CHECK_CLASS_CAST(klass, SYSPROF_TYPE_DISK_USAGE, SysprofDiskUsageClass)
+
+typedef struct _SysprofDiskUsage      SysprofDiskUsage;
+typedef struct _SysprofDiskUsageClass SysprofDiskUsageClass;
+
+SYSPROF_AVAILABLE_IN_ALL
+GType              sysprof_disk_usage_get_type (void) G_GNUC_CONST;
+SYSPROF_AVAILABLE_IN_ALL
+SysprofInstrument *sysprof_disk_usage_new      (void);
+
+G_DEFINE_AUTOPTR_CLEANUP_FUNC (SysprofDiskUsage, g_object_unref)
+
+G_END_DECLS

src/libsysprof-profile/sysprof-profile.h

@@ -26,6 +26,7 @@ G_BEGIN_DECLS
 
 #define SYSPROF_PROFILE_INSIDE
 # include "sysprof-cpu-usage.h"
+# include "sysprof-disk-usage.h"
 # include "sysprof-instrument.h"
 # include "sysprof-network-usage.h"
 # include "sysprof-profiler.h"

src/libsysprof-profile/tests/test-profiler.c

@@ -114,6 +114,7 @@ main (int       argc,
   profiler = sysprof_profiler_new ();
 
   sysprof_profiler_add_instrument (profiler, sysprof_cpu_usage_new ());
+  sysprof_profiler_add_instrument (profiler, sysprof_disk_usage_new ());
   sysprof_profiler_add_instrument (profiler, sysprof_network_usage_new ());
 
   sysprof_profiler_record_async (profiler, writer, NULL, record_cb, NULL);