[sysprof] helpers: add sync helper

[Christian Hergert <chergert src gnome org>]

commit ad4ca5faefc55c293e9db839bee9b6e441b2a076
Author: Christian Hergert <chergert redhat com>
Date:   Thu May 9 17:29:39 2019 -0700

    helpers: add sync helper

 src/libsysprof/sysprof-helpers.c | 33 +++++++++++++++++++++++++++++++--
 src/libsysprof/sysprof-helpers.h |  5 +++++
 2 files changed, 36 insertions(+), 2 deletions(-)
---
diff --git a/src/libsysprof/sysprof-helpers.c b/src/libsysprof/sysprof-helpers.c
index 0b1a10b..2b7ca59 100644
--- a/src/libsysprof/sysprof-helpers.c
+++ b/src/libsysprof/sysprof-helpers.c
@@ -158,6 +158,35 @@ sysprof_helpers_list_processes_cb (IpcService   *service,
                              "Failed to list processes");
 }
 
+gboolean
+sysprof_helpers_list_processes (SysprofHelpers  *self,
+                                GCancellable    *cancellable,
+                                gint32         **processes,
+                                gsize           *n_processes,
+                                GError         **error)
+{
+  g_autoptr(GVariant) fixed_ar = NULL;
+
+  g_return_val_if_fail (SYSPROF_IS_HELPERS (self), FALSE);
+  g_return_val_if_fail (processes != NULL, FALSE);
+  g_return_val_if_fail (n_processes != NULL, FALSE);
+
+  if (ipc_service_call_list_processes_sync (self->proxy, &fixed_ar, cancellable, NULL))
+    {
+      const gint32 *data;
+      gsize len;
+
+      data = g_variant_get_fixed_array (fixed_ar, &len, sizeof (gint32));
+      *processes = g_memdup (data, len * sizeof (gint32));
+      *n_processes = len;
+
+      return TRUE;
+    }
+
+  helpers_list_processes (processes, n_processes);
+  return TRUE;
+}
+
 void
 sysprof_helpers_list_processes_async (SysprofHelpers      *self,
                                       GCancellable        *cancellable,
@@ -280,7 +309,7 @@ sysprof_helpers_get_proc_file_async (SysprofHelpers      *self,
   g_return_if_fail (!cancellable || G_IS_CANCELLABLE (cancellable));
 
   task = g_task_new (self, cancellable, callback, user_data);
-  g_task_set_source_tag (task, sysprof_helpers_list_processes_async);
+  g_task_set_source_tag (task, sysprof_helpers_get_proc_file_async);
   g_task_set_task_data (task, g_strdup (path), g_free);
 
   if (!fail_if_no_proxy (self, task))
@@ -417,7 +446,7 @@ sysprof_helpers_perf_event_open_async (SysprofHelpers         *self,
   g_return_if_fail (group_fd >= -1);
 
   task = g_task_new (self, cancellable, callback, user_data);
-  g_task_set_source_tag (task, sysprof_helpers_list_processes_async);
+  g_task_set_source_tag (task, sysprof_helpers_perf_event_open_async);
 
   if (!fail_if_no_proxy (self, task))
     {
diff --git a/src/libsysprof/sysprof-helpers.h b/src/libsysprof/sysprof-helpers.h
index daa4aa0..f8aeed2 100644
--- a/src/libsysprof/sysprof-helpers.h
+++ b/src/libsysprof/sysprof-helpers.h
@@ -33,6 +33,11 @@ G_BEGIN_DECLS
 G_DECLARE_FINAL_TYPE (SysprofHelpers, sysprof_helpers, SYSPROF, HELPERS, GObject)
 
 SysprofHelpers *sysprof_helpers_get_default            (void);
+gboolean        sysprof_helpers_list_processes         (SysprofHelpers          *self,
+                                                        GCancellable            *cancellable,
+                                                        gint32                 **processes,
+                                                        gsize                   *n_processes,
+                                                        GError                 **error);
 void            sysprof_helpers_list_processes_async   (SysprofHelpers          *self,
                                                         GCancellable            *cancellable,
                                                         GAsyncReadyCallback      callback,