From: Jonathan Rajotte <jonathan.rajotte-julien@efficios.com>
Date: Thu, 18 Aug 2022 18:46:02 +0000 (-0400)
Subject: Convert ltt_kernel_session to c++
X-Git-Url: http://git.efficios.com/?p=lttng-tools.git;a=commitdiff_plain;h=dd7cc72104fff0f8d4557d613d51da39b5524362

Convert ltt_kernel_session to c++

This is a minimal patch to move the ltt_kernel_session struct to c++ style.
This will allow us to add complex type in the struct later on (such
as unique_ptr/shared_ptr etc).

Use default member initialization when possible.

Signed-off-by: Jonathan Rajotte <jonathan.rajotte-julien@efficios.com>
Change-Id: Ib5778db0c39666e30782931c5bf5d4ffb5beeff0
---

diff --git a/src/bin/lttng-sessiond/trace-kernel.cpp b/src/bin/lttng-sessiond/trace-kernel.cpp
index 23d808ce8..63524f726 100644
--- a/src/bin/lttng-sessiond/trace-kernel.cpp
+++ b/src/bin/lttng-sessiond/trace-kernel.cpp
@@ -151,18 +151,15 @@ struct ltt_kernel_session *trace_kernel_create_session(void)
 	struct ltt_kernel_session *lks = NULL;
 
 	/* Allocate a new ltt kernel session */
-	lks = zmalloc<ltt_kernel_session>();
+	lks = new ltt_kernel_session;
 	if (lks == NULL) {
 		PERROR("create kernel session zmalloc");
 		goto alloc_error;
 	}
 
+	lks->active = 0;
+
 	/* Init data structure */
-	lks->fd = -1;
-	lks->metadata_stream_fd = -1;
-	lks->channel_count = 0;
-	lks->stream_count_global = 0;
-	lks->metadata = NULL;
 	CDS_INIT_LIST_HEAD(&lks->channel_list.head);
 
 	lks->tracker_pid = process_attr_tracker_create();
@@ -203,7 +200,7 @@ error:
 	process_attr_tracker_destroy(lks->tracker_vuid);
 	process_attr_tracker_destroy(lks->tracker_gid);
 	process_attr_tracker_destroy(lks->tracker_vgid);
-	free(lks);
+	delete (lks);
 
 alloc_error:
 	return NULL;
@@ -1047,5 +1044,5 @@ void trace_kernel_free_session(struct ltt_kernel_session *session)
 	process_attr_tracker_destroy(session->tracker_gid);
 	process_attr_tracker_destroy(session->tracker_vgid);
 
-	free(session);
+	delete (session);
 }
diff --git a/src/bin/lttng-sessiond/trace-kernel.hpp b/src/bin/lttng-sessiond/trace-kernel.hpp
index 50a58667e..8844e8a0d 100644
--- a/src/bin/lttng-sessiond/trace-kernel.hpp
+++ b/src/bin/lttng-sessiond/trace-kernel.hpp
@@ -107,35 +107,35 @@ struct ltt_kernel_stream {
 
 /* Kernel session */
 struct ltt_kernel_session {
-	int fd;
-	int metadata_stream_fd;
-	int consumer_fds_sent;
-	unsigned int channel_count;
-	unsigned int stream_count_global;
-	struct ltt_kernel_metadata *metadata;
-	struct ltt_kernel_channel_list channel_list;
+	int fd{-1};
+	int metadata_stream_fd{-1};
+	int consumer_fds_sent{};
+	unsigned int channel_count{};
+	unsigned int stream_count_global{};
+	struct ltt_kernel_metadata *metadata{};
+	struct ltt_kernel_channel_list channel_list {};
 	/* UID/GID of the user owning the session */
-	uid_t uid;
-	gid_t gid;
-	struct consumer_output *consumer;
+	uid_t uid{};
+	gid_t gid{};
+	struct consumer_output *consumer{};
 	/* Tracing session id */
-	uint64_t id;
+	uint64_t id{};
 	/* Session is active or not meaning it has been started or stopped. */
 	unsigned int active:1;
 	/* Tell or not if the session has to output the traces. */
-	unsigned int output_traces;
-	unsigned int snapshot_mode;
-	unsigned int has_non_default_channel;
-	bool is_live_session;
+	unsigned int output_traces{};
+	unsigned int snapshot_mode{};
+	unsigned int has_non_default_channel{};
+	bool is_live_session{false};
 	/* Current trace chunk of the ltt_session. */
-	struct lttng_trace_chunk *current_trace_chunk;
+	struct lttng_trace_chunk *current_trace_chunk{};
 	/* Tracker lists */
-	struct process_attr_tracker *tracker_pid;
-	struct process_attr_tracker *tracker_vpid;
-	struct process_attr_tracker *tracker_uid;
-	struct process_attr_tracker *tracker_vuid;
-	struct process_attr_tracker *tracker_gid;
-	struct process_attr_tracker *tracker_vgid;
+	struct process_attr_tracker *tracker_pid{};
+	struct process_attr_tracker *tracker_vpid{};
+	struct process_attr_tracker *tracker_uid{};
+	struct process_attr_tracker *tracker_vuid{};
+	struct process_attr_tracker *tracker_gid{};
+	struct process_attr_tracker *tracker_vgid{};
 };
 
 /*