PlaylistVector: use std::list

Makefile.am

@@ -1358,7 +1358,7 @@ test_test_pcm_LDADD = \
 
 test_TestQueuePriority_SOURCES = \
 	src/queue.c \
-	test/TestQueuePriority.c
+	test/TestQueuePriority.cxx
 test_TestQueuePriority_LDADD = \
 	$(GLIB_LIBS)
 

src/Directory.cxx

@@ -55,7 +55,6 @@ Directory::Directory()
 {
 	INIT_LIST_HEAD(&children);
 	INIT_LIST_HEAD(&songs);
-	INIT_LIST_HEAD(&playlists);
 
 	path[0] = 0;
 }
@@ -64,15 +63,12 @@ Directory::Directory(const char *_path)
 {
 	INIT_LIST_HEAD(&children);
 	INIT_LIST_HEAD(&songs);
-	INIT_LIST_HEAD(&playlists);
 
 	strcpy(path, _path);
 }
 
 Directory::~Directory()
 {
-	playlist_vector_deinit(&playlists);
-
 	struct song *song, *ns;
 	directory_for_each_song_safe(song, ns, this)
 		song_free(song);
@@ -318,9 +314,8 @@ Directory::Walk(bool recursive, const SongFilter *filter,
 	}
 
 	if (visit_playlist) {
-		PlaylistInfo *i;
-		directory_for_each_playlist(i, this)
-			if (!visit_playlist(*i, *this, error_r))
+		for (const PlaylistInfo &p : playlists)
+			if (!visit_playlist(p, *this, error_r))
 				return false;
 	}
 

src/Directory.hxx

@@ -24,6 +24,7 @@
 #include "util/list.h"
 #include "gcc.h"
 #include "DatabaseVisitor.hxx"
+#include "PlaylistVector.hxx"
 
 #include <glib.h>
 #include <stdbool.h>
@@ -44,12 +45,6 @@
 #define directory_for_each_song_safe(pos, n, directory) \
 	list_for_each_entry_safe(pos, n, &directory->songs, siblings)
 
-#define directory_for_each_playlist(pos, directory) \
-	list_for_each_entry(pos, &directory->playlists, siblings)
-
-#define directory_for_each_playlist_safe(pos, n, directory) \
-	list_for_each_entry_safe(pos, n, &directory->playlists, siblings)
-
 struct song;
 struct db_visitor;
 class SongFilter;
@@ -81,7 +76,7 @@ struct Directory {
 	 */
 	struct list_head songs;
 
-	struct list_head playlists;
+	PlaylistVector playlists;
 
 	Directory *parent;
 	time_t mtime;
@@ -179,7 +174,7 @@ public:
 	bool IsEmpty() const {
 		return list_empty(&children) &&
 			list_empty(&songs) &&
-			list_empty(&playlists);
+			playlists.empty();
 	}
 
 	gcc_pure

src/DirectorySave.cxx

@@ -72,7 +72,7 @@ directory_save(FILE *fp, const Directory *directory)
 	directory_for_each_song(song, directory)
 		song_save(fp, song);
 
-	playlist_vector_save(fp, &directory->playlists);
+	playlist_vector_save(fp, directory->playlists);
 
 	if (!directory->IsRoot())
 		fprintf(fp, DIRECTORY_END "%s\n", directory->GetPath());
@@ -168,7 +168,7 @@ directory_load(FILE *fp, Directory *directory,
 			   buffer */
 			char *name = g_strdup(line + sizeof(PLAYLIST_META_BEGIN) - 1);
 
-			if (!playlist_metadata_load(fp, &directory->playlists,
+			if (!playlist_metadata_load(fp, directory->playlists,
 						    name, buffer, error)) {
 				g_free(name);
 				return false;

src/PlaylistDatabase.cxx

@@ -36,18 +36,17 @@ playlist_database_quark(void)
 }
 
 void
-playlist_vector_save(FILE *fp, const struct list_head *pv)
+playlist_vector_save(FILE *fp, const PlaylistVector &pv)
 {
-	PlaylistInfo *pm;
-	playlist_vector_for_each(pm, pv)
+	for (const PlaylistInfo &pi : pv)
 		fprintf(fp, PLAYLIST_META_BEGIN "%s\n"
 			"mtime: %li\n"
 			"playlist_end\n",
-			pm->name.c_str(), (long)pm->mtime);
+			pi.name.c_str(), (long)pi.mtime);
 }
 
 bool
-playlist_metadata_load(FILE *fp, struct list_head *pv, const char *name,
+playlist_metadata_load(FILE *fp, PlaylistVector &pv, const char *name,
 		       GString *buffer, GError **error_r)
 {
 	PlaylistInfo pm(name, 0);
@@ -76,6 +75,6 @@ playlist_metadata_load(FILE *fp, struct list_head *pv, const char *name,
 		}
 	}
 
-	playlist_vector_update_or_add(pv, std::move(pm));
+	pv.UpdateOrInsert(std::move(pm));
 	return true;
 }

src/PlaylistDatabase.hxx

@@ -27,13 +27,13 @@
 
 #define PLAYLIST_META_BEGIN "playlist_begin: "
 
-struct list_head;
+class PlaylistVector;
 
 void
-playlist_vector_save(FILE *fp, const struct list_head *pv);
+playlist_vector_save(FILE *fp, const PlaylistVector &pv);
 
 bool
-playlist_metadata_load(FILE *fp, struct list_head *pv, const char *name,
+playlist_metadata_load(FILE *fp, PlaylistVector &pv, const char *name,
 		       GString *buffer, GError **error_r);
 
 #endif

src/PlaylistInfo.hxx

@@ -22,6 +22,7 @@
 
 #include "check.h"
 #include "util/list.h"
+#include "gcc.h"
 
 #include <string>
 
@@ -40,6 +41,18 @@ struct PlaylistInfo {
 
 	time_t mtime;
 
+	class CompareName {
+		const char *const name;
+
+	public:
+		constexpr CompareName(const char *_name):name(_name) {}
+
+		gcc_pure
+		bool operator()(const PlaylistInfo &pi) const {
+			return pi.name.compare(name) == 0;
+		}
+	};
+
 	template<typename N>
 	PlaylistInfo(N &&_name, time_t _mtime)
 		:name(std::forward<N>(_name)), mtime(_mtime) {}

src/PlaylistVector.cxx

@@ -21,71 +21,48 @@
 #include "PlaylistVector.hxx"
 #include "DatabaseLock.hxx"
 
+#include <algorithm>
+
 #include <assert.h>
 #include <string.h>
 #include <glib.h>
 
-void
-playlist_vector_deinit(struct list_head *pv)
-{
-	assert(pv != NULL);
-
-	PlaylistInfo *pm, *n;
-	playlist_vector_for_each_safe(pm, n, pv)
-		delete pm;
-}
-
-PlaylistInfo *
-playlist_vector_find(struct list_head *pv, const char *name)
+PlaylistVector::iterator
+PlaylistVector::find(const char *name)
 {
 	assert(holding_db_lock());
-	assert(pv != NULL);
 	assert(name != NULL);
 
-	PlaylistInfo *pm;
-	playlist_vector_for_each(pm, pv)
-		if (pm->name.compare(name) == 0)
-			return pm;
-
-	return NULL;
-}
-
-void
-playlist_vector_add(struct list_head *pv, PlaylistInfo &&pi)
-{
-	assert(holding_db_lock());
-
-	PlaylistInfo *pm = new PlaylistInfo(std::move(pi));
-	list_add_tail(&pm->siblings, pv);
+	return std::find_if(begin(), end(),
+			    PlaylistInfo::CompareName(name));
 }
 
 bool
-playlist_vector_update_or_add(struct list_head *pv, PlaylistInfo &&pi)
+PlaylistVector::UpdateOrInsert(PlaylistInfo &&pi)
 {
 	assert(holding_db_lock());
 
-	PlaylistInfo *pm = playlist_vector_find(pv, pi.name.c_str());
-	if (pm != NULL) {
-		if (pi.mtime == pm->mtime)
+	auto i = find(pi.name.c_str());
+	if (i != end()) {
+		if (pi.mtime == i->mtime)
 			return false;
 
-		pm->mtime = pi.mtime;
+		i->mtime = pi.mtime;
 	} else
-		playlist_vector_add(pv, std::move(pi));
+		push_back(std::move(pi));
 
 	return true;
 }
 
 bool
-playlist_vector_remove(struct list_head *pv, const char *name)
+PlaylistVector::erase(const char *name)
 {
 	assert(holding_db_lock());
 
-	PlaylistInfo *pm = playlist_vector_find(pv, name);
-	if (pm == NULL)
+	auto i = find(name);
+	if (i == end())
 		return false;
 
-	list_del(&pm->siblings);
-	delete pm;
+	erase(i);
 	return true;
 }

src/PlaylistVector.hxx

@@ -21,43 +21,35 @@
 #define MPD_PLAYLIST_VECTOR_HXX
 
 #include "PlaylistInfo.hxx"
-#include "util/list.h"
-
-#include <sys/time.h>
-
-#define playlist_vector_for_each(pos, head) \
-	list_for_each_entry(pos, head, siblings)
-
-#define playlist_vector_for_each_safe(pos, n, head) \
-	list_for_each_entry_safe(pos, n, head, siblings)
-
-void
-playlist_vector_deinit(struct list_head *pv);
-
-/**
- * Caller must lock the #db_mutex.
- */
-PlaylistInfo *
-playlist_vector_find(struct list_head *pv, const char *name);
-
-/**
- * Caller must lock the #db_mutex.
- */
-void
-playlist_vector_add(struct list_head *pv, PlaylistInfo &&pi);
-
-/**
- * Caller must lock the #db_mutex.
- *
- * @return true if the vector or one of its items was modified
- */
-bool
-playlist_vector_update_or_add(struct list_head *pv, PlaylistInfo &&pi);
-
-/**
- * Caller must lock the #db_mutex.
- */
-bool
-playlist_vector_remove(struct list_head *pv, const char *name);
+#include "gcc.h"
+
+#include <list>
+
+class PlaylistVector : protected std::list<PlaylistInfo> {
+protected:
+	/**
+	 * Caller must lock the #db_mutex.
+	 */
+	gcc_pure
+	iterator find(const char *name);
+
+public:
+	using std::list<PlaylistInfo>::empty;
+	using std::list<PlaylistInfo>::begin;
+	using std::list<PlaylistInfo>::end;
+	using std::list<PlaylistInfo>::erase;
+
+	/**
+	 * Caller must lock the #db_mutex.
+	 *
+	 * @return true if the vector or one of its items was modified
+	 */
+	bool UpdateOrInsert(PlaylistInfo &&pi);
+
+	/**
+	 * Caller must lock the #db_mutex.
+	 */
+	bool erase(const char *name);
+};
 
 #endif /* SONGVEC_H */

src/UpdateDatabase.cxx

@@ -96,7 +96,7 @@ delete_name_in(Directory *parent, const char *name)
 		modified = true;
 	}
 
-	playlist_vector_remove(&parent->playlists, name);
+	parent->playlists.erase(name);
 
 	db_unlock();
 

src/UpdateWalk.cxx

@@ -158,14 +158,15 @@ purge_deleted_from_directory(Directory *directory)
 		g_free(path);
 	}
 
-	PlaylistInfo *pm, *np;
-	directory_for_each_playlist_safe(pm, np, directory) {
-		if (!directory_child_is_regular(directory, pm->name.c_str())) {
+	for (auto i = directory->playlists.begin(),
+		     end = directory->playlists.end();
+	     i != end;) {
+		if (!directory_child_is_regular(directory, i->name.c_str())) {
 			db_lock();
-			playlist_vector_remove(&directory->playlists,
-					       pm->name.c_str());
+			i = directory->playlists.erase(i);
 			db_unlock();
-		}
+		} else
+			++i;
 	}
 }
 
@@ -217,8 +218,7 @@ update_playlist_file2(Directory *directory,
 	PlaylistInfo pi(name, st->st_mtime);
 
 	db_lock();
-	if (playlist_vector_update_or_add(&directory->playlists,
-					  std::move(pi)))
+	if (directory->playlists.UpdateOrInsert(std::move(pi)))
 		modified = true;
 	db_unlock();
 	return true;