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authorTom Tromey <tom@tromey.com>2018-03-28 15:35:46 -0600
committerTom Tromey <tom@tromey.com>2018-03-30 13:15:58 -0600
commit263db9a1f4105b76ddf00829d50430ea0a3bcba6 (patch)
treea74d226240d6c08fbd9b8006649434338c77d99a /gdb
parent5dafb3d176ab8d9b9f0a46111d7040bb51ad8f8e (diff)
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Remove free_dwo_file_cleanup
This removes free_dwo_file_cleanup, the last cleanup in dwarf2read.c. This is replaced with a unique_ptr; which, despite the fact that a dwo_file is obstack-allocated, seemed like the best fit. gdb/ChangeLog 2018-03-30 Tom Tromey <tom@tromey.com> * dwarf2read.c (struct free_dwo_file_cleanup_data): Remove. (struct dwo_file_deleter): New. (dwo_file_up): New typedef. (open_and_init_dwo_file): Use dwo_file_up. (free_dwo_file_cleanup): Remove.
Diffstat (limited to 'gdb')
-rw-r--r--gdb/ChangeLog8
-rw-r--r--gdb/dwarf2read.c49
2 files changed, 27 insertions, 30 deletions
diff --git a/gdb/ChangeLog b/gdb/ChangeLog
index 61f8131..db1c7dd 100644
--- a/gdb/ChangeLog
+++ b/gdb/ChangeLog
@@ -1,5 +1,13 @@
2018-03-30 Tom Tromey <tom@tromey.com>
+ * dwarf2read.c (struct free_dwo_file_cleanup_data): Remove.
+ (struct dwo_file_deleter): New.
+ (dwo_file_up): New typedef.
+ (open_and_init_dwo_file): Use dwo_file_up.
+ (free_dwo_file_cleanup): Remove.
+
+2018-03-30 Tom Tromey <tom@tromey.com>
+
* dwarf2read.c (free_dwo_file): Remove "objfile" parameter.
(free_dwo_file_cleanup, free_dwo_file_from_slot): Update.
diff --git a/gdb/dwarf2read.c b/gdb/dwarf2read.c
index 1ab0738..fd544a7 100644
--- a/gdb/dwarf2read.c
+++ b/gdb/dwarf2read.c
@@ -1959,14 +1959,22 @@ static struct dwo_unit *lookup_dwo_type_unit
static void queue_and_load_all_dwo_tus (struct dwarf2_per_cu_data *);
-static void free_dwo_file_cleanup (void *);
+static void free_dwo_file (struct dwo_file *);
-struct free_dwo_file_cleanup_data
+/* A unique_ptr helper to free a dwo_file. */
+
+struct dwo_file_deleter
{
- struct dwo_file *dwo_file;
- struct dwarf2_per_objfile *dwarf2_per_objfile;
+ void operator() (struct dwo_file *df) const
+ {
+ free_dwo_file (df);
+ }
};
+/* A unique pointer to a dwo_file. */
+
+typedef std::unique_ptr<struct dwo_file, dwo_file_deleter> dwo_file_up;
+
static void process_cu_includes (struct dwarf2_per_objfile *dwarf2_per_objfile);
static void check_producer (struct dwarf2_cu *cu);
@@ -12983,8 +12991,6 @@ open_and_init_dwo_file (struct dwarf2_per_cu_data *per_cu,
{
struct dwarf2_per_objfile *dwarf2_per_objfile = per_cu->dwarf2_per_objfile;
struct objfile *objfile = dwarf2_per_objfile->objfile;
- struct dwo_file *dwo_file;
- struct cleanup *cleanups;
gdb_bfd_ref_ptr dbfd (open_dwo_file (dwarf2_per_objfile, dwo_name, comp_dir));
if (dbfd == NULL)
@@ -12993,32 +12999,28 @@ open_and_init_dwo_file (struct dwarf2_per_cu_data *per_cu,
fprintf_unfiltered (gdb_stdlog, "DWO file not found: %s\n", dwo_name);
return NULL;
}
- dwo_file = OBSTACK_ZALLOC (&objfile->objfile_obstack, struct dwo_file);
+
+ /* We use a unique pointer here, despite the obstack allocation,
+ because a dwo_file needs some cleanup if it is abandoned. */
+ dwo_file_up dwo_file (OBSTACK_ZALLOC (&objfile->objfile_obstack,
+ struct dwo_file));
dwo_file->dwo_name = dwo_name;
dwo_file->comp_dir = comp_dir;
dwo_file->dbfd = dbfd.release ();
- free_dwo_file_cleanup_data *cleanup_data = XNEW (free_dwo_file_cleanup_data);
- cleanup_data->dwo_file = dwo_file;
- cleanup_data->dwarf2_per_objfile = dwarf2_per_objfile;
-
- cleanups = make_cleanup (free_dwo_file_cleanup, cleanup_data);
-
bfd_map_over_sections (dwo_file->dbfd, dwarf2_locate_dwo_sections,
&dwo_file->sections);
create_cus_hash_table (dwarf2_per_objfile, *dwo_file, dwo_file->sections.info,
dwo_file->cus);
- create_debug_types_hash_table (dwarf2_per_objfile, dwo_file,
+ create_debug_types_hash_table (dwarf2_per_objfile, dwo_file.get (),
dwo_file->sections.types, dwo_file->tus);
- discard_cleanups (cleanups);
-
if (dwarf_read_debug)
fprintf_unfiltered (gdb_stdlog, "DWO file found: %s\n", dwo_name);
- return dwo_file;
+ return dwo_file.release ();
}
/* This function is mapped across the sections and remembers the offset and
@@ -13524,19 +13526,6 @@ free_dwo_file (struct dwo_file *dwo_file)
VEC_free (dwarf2_section_info_def, dwo_file->sections.types);
}
-/* Wrapper for free_dwo_file for use in cleanups. */
-
-static void
-free_dwo_file_cleanup (void *arg)
-{
- struct free_dwo_file_cleanup_data *data
- = (struct free_dwo_file_cleanup_data *) arg;
-
- free_dwo_file (data->dwo_file);
-
- xfree (data);
-}
-
/* Traversal function for free_dwo_files. */
static int