[glib/task-trace: 1/4] trace: Add support for integer counters

[Matthias Clasen <matthiasc src gnome org>]

commit 00e93652def3e4a23915eb568b77f625f8bfc8e9
Author: Matthias Clasen <mclasen redhat com>
Date:   Fri Aug 21 11:48:40 2020 -0400

    trace: Add support for integer counters
    
    This will be used in GTask.

 glib/gtrace-private.h | 10 ++++++++++
 glib/gtrace.c         | 34 ++++++++++++++++++++++++++++++++++
 2 files changed, 44 insertions(+)
---
diff --git a/glib/gtrace-private.h b/glib/gtrace-private.h
index 24550152d..a01cb1324 100644
--- a/glib/gtrace-private.h
+++ b/glib/gtrace-private.h
@@ -67,4 +67,14 @@ void (g_trace_mark) (gint64       begin_time_nsec,
 #endif
 #endif
 
+guint   (g_trace_define_int_counter) (const char *name,
+                                      const char *description);
+void    (g_trace_set_int_counter)    (guint       id,
+                                      gint64      value);
+
+#ifndef HAVE_SYSPROF
+#define g_trace_define_int_counter(n, d) 0
+#define g_trace_set_int_counter(i,v) 0
+#endif
+
 G_END_DECLS
diff --git a/glib/gtrace.c b/glib/gtrace.c
index 29726778d..e1b4ab8a1 100644
--- a/glib/gtrace.c
+++ b/glib/gtrace.c
@@ -96,3 +96,37 @@ void
   va_end (args);
 #endif  /* HAVE_SYSPROF */
 }
+
+guint
+(g_trace_define_int_counter) (const char *name,
+                              const char *description)
+{
+#ifdef HAVE_SYSPROF
+  SysprofCaptureCounter counter;
+
+  counter.id = sysprof_collector_request_counters (1);
+  counter.type = SYSPROF_CAPTURE_COUNTER_INT64;
+  counter.value.v64 = 0;
+  g_strlcpy (counter.category, "GLib", sizeof counter.category);
+  g_strlcpy (counter.name, name, sizeof counter.name);
+  g_strlcpy (counter.description, description, sizeof counter.name);
+
+  sysprof_collector_define_counters (&counter, 1);
+
+  return counter.id;
+#else
+  return 0;
+#endif
+}
+
+void
+(g_trace_set_int_counter) (guint  id,
+                           gint64 val)
+{
+#ifdef HAVE_SYSPROF
+  SysprofCaptureCounterValue value;
+
+  value.v64 = val;
+  sysprof_collector_set_counters (&id, &value, 1);
+#endif
+}