Implement move semantics for shared audio buffer

src/common/audio-shm.cpp

@@ -30,5 +30,14 @@ AudioShmBuffer::~AudioShmBuffer() noexcept {
     // If either side drops this object then the buffer should always be
     // removed, so we'll do it on both sides to reduce the chance that we leak
     // shared memory
-    boost::interprocess::shared_memory_object::remove(config.name.c_str());
+    if (!is_moved) {
+        boost::interprocess::shared_memory_object::remove(config.name.c_str());
+    }
+}
+
+AudioShmBuffer::AudioShmBuffer(AudioShmBuffer&& o) noexcept
+    : config(std::move(o.config)),
+      shm(std::move(o.shm)),
+      buffer(std::move(o.buffer)) {
+    o.is_moved = true;
 }

src/common/audio-shm.h

@@ -117,6 +117,12 @@ class AudioShmBuffer {
      */
     ~AudioShmBuffer() noexcept;
 
+    AudioShmBuffer(const AudioShmBuffer&) = delete;
+    AudioShmBuffer& operator=(const AudioShmBuffer&) = delete;
+
+    AudioShmBuffer(AudioShmBuffer&&) noexcept;
+    AudioShmBuffer& operator=(AudioShmBuffer&&) = delete;
+
     /**
      * Get a pointer to the part of the buffer where this input audio channel is
      * stored in.
@@ -142,4 +148,6 @@ class AudioShmBuffer {
    private:
     boost::interprocess::shared_memory_object shm;
     boost::interprocess::mapped_region buffer;
+
+    bool is_moved = false;
 };