From: Simon Marchi <simon.marchi@efficios.com>
Date: Tue, 9 Apr 2024 21:03:42 +0000 (-0400)
Subject: src.ctf.fs: make ctf_fs_component::trace a unique_ptr
X-Git-Url: http://git.efficios.com/?p=babeltrace.git;a=commitdiff_plain;h=7df773f2c13b7e624f503c51605ddcae31625a30

src.ctf.fs: make ctf_fs_component::trace a unique_ptr

Define ctf_fs_trace::UP to be a unique_ptr type with a deleter that
calls ctf_fs_trace_destroy (the custom deleter will go away once
ctf_fs_trace is properly destructible).  Change ctf_fs_component::trace
to be of this type.

Change-Id: Iaf8111922b320781d7e9333bcdc5db129192509d
Signed-off-by: Simon Marchi <simon.marchi@efficios.com>
Reviewed-on: https://review.lttng.org/c/babeltrace/+/8240
Reviewed-by: Philippe Proulx <eeppeliteloop@gmail.com>
Reviewed-on: https://review.lttng.org/c/babeltrace/+/12279
---

diff --git a/src/plugins/ctf/fs-src/fs.cpp b/src/plugins/ctf/fs-src/fs.cpp
index a776f27c..21e61e37 100644
--- a/src/plugins/ctf/fs-src/fs.cpp
+++ b/src/plugins/ctf/fs-src/fs.cpp
@@ -298,14 +298,17 @@ static void ctf_fs_trace_destroy(struct ctf_fs_trace *ctf_fs_trace)
     delete ctf_fs_trace;
 }
 
+void ctf_fs_trace_deleter::operator()(ctf_fs_trace * const trace) noexcept
+{
+    ctf_fs_trace_destroy(trace);
+}
+
 void ctf_fs_destroy(struct ctf_fs_component *ctf_fs)
 {
     if (!ctf_fs) {
         return;
     }
 
-    ctf_fs_trace_destroy(ctf_fs->trace);
-
     if (ctf_fs->port_data) {
         g_ptr_array_free(ctf_fs->port_data, TRUE);
     }
@@ -1995,14 +1998,14 @@ int ctf_fs_component_create_ctf_fs_trace(struct ctf_fs_component *ctf_fs,
             goto error;
         }
 
-        ctf_fs->trace = trace;
+        ctf_fs->trace.reset(trace);
     } else {
         /* Just one trace, it may or may not have a UUID, both are fine. */
-        ctf_fs->trace = (ctf_fs_trace *) traces->pdata[0];
+        ctf_fs->trace.reset((ctf_fs_trace *) traces->pdata[0]);
         traces->pdata[0] = NULL;
     }
 
-    ret = fix_packet_index_tracer_bugs(ctf_fs->trace);
+    ret = fix_packet_index_tracer_bugs(ctf_fs->trace.get());
     if (ret) {
         BT_CPPLOGE_APPEND_CAUSE_SPEC(ctf_fs->logger, "Failed to fix packet index tracer bugs.");
     }
@@ -2210,11 +2213,11 @@ static ctf_fs_component::UP ctf_fs_create(const bt_value *params,
         return nullptr;
     }
 
-    if (create_streams_for_trace(ctf_fs->trace)) {
+    if (create_streams_for_trace(ctf_fs->trace.get())) {
         return nullptr;
     }
 
-    if (create_ports_for_trace(ctf_fs.get(), ctf_fs->trace, self_comp_src)) {
+    if (create_ports_for_trace(ctf_fs.get(), ctf_fs->trace.get(), self_comp_src)) {
         return nullptr;
     }
 
diff --git a/src/plugins/ctf/fs-src/fs.hpp b/src/plugins/ctf/fs-src/fs.hpp
index a0153a9b..b0052bb7 100644
--- a/src/plugins/ctf/fs-src/fs.hpp
+++ b/src/plugins/ctf/fs-src/fs.hpp
@@ -58,8 +58,15 @@ struct ctf_fs_metadata
     int bo = 0;
 };
 
+struct ctf_fs_trace_deleter
+{
+    void operator()(ctf_fs_trace *) noexcept;
+};
+
 struct ctf_fs_trace
 {
+    using UP = std::unique_ptr<ctf_fs_trace, ctf_fs_trace_deleter>;
+
     explicit ctf_fs_trace(const bt2c::Logger& parentLogger) :
         logger {parentLogger, "PLUGIN/SRC.CTF.FS/TRACE"}
     {
@@ -111,8 +118,7 @@ struct ctf_fs_component
     /* Array of struct ctf_fs_port_data *, owned by this */
     GPtrArray *port_data = nullptr;
 
-    /* Owned by this */
-    struct ctf_fs_trace *trace = nullptr;
+    ctf_fs_trace::UP trace;
 
     ctf::src::ClkClsCfg clkClsCfg;
 };
diff --git a/src/plugins/ctf/fs-src/query.cpp b/src/plugins/ctf/fs-src/query.cpp
index b9efc65b..3e25f168 100644
--- a/src/plugins/ctf/fs-src/query.cpp
+++ b/src/plugins/ctf/fs-src/query.cpp
@@ -199,7 +199,7 @@ bt2::Value::Shared trace_infos_query(const bt2::ConstMapValue params, const bt2c
 
     const auto result = bt2::ArrayValue::create();
     const auto traceInfo = result->appendEmptyMap();
-    populate_trace_info(ctf_fs->trace, traceInfo, logger);
+    populate_trace_info(ctf_fs->trace.get(), traceInfo, logger);
 
     return result;
 }