From e8b9309c5d822c9f6a3ce7188c17f0e23b41327b Mon Sep 17 00:00:00 2001
From: Olivier Dion <olivier.dion@savoirfairelinux.com>
Date: Fri, 10 Dec 2021 12:51:23 -0500
Subject: [PATCH] tracepoint: Add LTTng tracepoint generation
Change-Id: I6358f3ab5f464f1a553814c58b22245ef64f0b52
---
src/Makefile.am | 5 ++++
src/jami/tracepoint-def.h | 26 +++++++++++++++++
src/jami/tracepoint.c | 3 ++
src/jami/tracepoint.h | 60 +++++++++++++++++++++++++++++++++++++++
4 files changed, 94 insertions(+)
create mode 100644 src/jami/tracepoint-def.h
create mode 100644 src/jami/tracepoint.c
create mode 100644 src/jami/tracepoint.h
diff --git a/src/Makefile.am b/src/Makefile.am
index b83726a94f..64195d1636 100644
--- a/src/Makefile.am
+++ b/src/Makefile.am
@@ -161,3 +161,8 @@ if ENABLE_VIDEO
nobase_include_HEADERS += \
./jami/videomanager_interface.h
endif
+
+if ENABLE_TRACEPOINTS
+libring_la_SOURCES += jami/tracepoint.h jami/tracepoint-def.h jami/tracepoint.c
+libring_la_LIBADD += $(LTTNG_LIBS)
+endif
diff --git a/src/jami/tracepoint-def.h b/src/jami/tracepoint-def.h
new file mode 100644
index 0000000000..47ac84aa35
--- /dev/null
+++ b/src/jami/tracepoint-def.h
@@ -0,0 +1,26 @@
+#include "config.h"
+
+#ifdef ENABLE_TRACEPOINTS
+
+#undef LTTNG_UST_TRACEPOINT_PROVIDER
+#define LTTNG_UST_TRACEPOINT_PROVIDER jami
+
+#undef LTTNG_UST_TRACEPOINT_INCLUDE
+#define LTTNG_UST_TRACEPOINT_INCLUDE "src/jami/tracepoint-def.h"
+
+#if !defined(TRACEPOINT_DEF_H) || defined(LTTNG_UST_TRACEPOINT_HEADER_MULTI_READ)
+#define TRACEPOINT_DEF_H
+
+#include <lttng/tracepoint.h>
+
+/*
+ * Use LTTNG_UST_TRACEPOINT_EVENT(), LTTNG_UST_TRACEPOINT_EVENT_CLASS(),
+ * LTTNG_UST_TRACEPOINT_EVENT_INSTANCE(), and LTTNG_UST_TRACEPOINT_LOGLEVEL()
+ * here.
+ */
+
+#endif /* TRACEPOINT_H */
+
+#include <lttng/tracepoint-event.h>
+
+#endif
diff --git a/src/jami/tracepoint.c b/src/jami/tracepoint.c
new file mode 100644
index 0000000000..392fb0e92a
--- /dev/null
+++ b/src/jami/tracepoint.c
@@ -0,0 +1,3 @@
+#define LTTNG_UST_TRACEPOINT_CREATE_PROBES
+#define LTTNG_UST_TRACEPOINT_DEFINE
+#include "./tracepoint.h"
diff --git a/src/jami/tracepoint.h b/src/jami/tracepoint.h
new file mode 100644
index 0000000000..266ecb55fd
--- /dev/null
+++ b/src/jami/tracepoint.h
@@ -0,0 +1,60 @@
+/*
+ * Copyright (C) 2022 Savoir-faire Linux Inc.
+ *
+ * Author: Olivier Dion <olivier.dion@savoirfairelinux.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, write to the Free Software
+ * Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA.
+ */
+
+#pragma once
+#pragma GCC diagnostic push
+#pragma GCC diagnostic ignored "-Wmissing-field-initializers"
+#include "tracepoint-def.h"
+#pragma GCC diagnostic pop
+
+#ifdef ENABLE_TRACEPOINTS
+
+# ifndef lttng_ust_tracepoint
+# define lttng_ust_tracepoint(...) tracepoint(__VA_ARGS__)
+# endif
+
+# ifndef lttng_ust_do_tracepoint
+# define lttng_ust_do_tracepoint(...) do_tracepoint(__VA_ARGS__)
+# endif
+
+# ifndef lttng_ust_tracepoint_enabled
+# define lttng_ust_tracepoint_enabled(...) tracepoint_enabled(__VA_ARGS__)
+# endif
+
+# define jami_tracepoint(tp_name, ...) \
+ lttng_ust_tracepoint(jami, tp_name __VA_OPT__(,) __VA_ARGS__)
+
+# define jami_tracepoint_if_enabled(tp_name, ...) \
+ do { \
+ if (lttng_ust_tracepoint_enabled(jami, tp_name)) { \
+ lttng_ust_do_tracepoint(jami, \
+ tp_name \
+ __VA_OPT__(,) \
+ __VA_ARGS__); \
+ } \
+ } \
+ while (0)
+
+#else
+
+# define jami_tracepoint(...) static_assert(true)
+# define jami_tracepoint_if_enabled(...) static_assert(true)
+
+#endif
--
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