[RFA 08/23] Remove an unlink cleanup

Tom Tromey
2017-05-03T22:46:38Z

compile/compile.c had its own cleanup to unlink a file. This patch
replaces this cleanup with gdb::unlinker.

2017-05-02 Tom Tromey <tom@tromey.com>

* compile/compile.c (cleanup_unlink_file): Remove.
(compile_to_object): Use gdb::unlinker.
(eval_compile_command): Likewise.
---
gdb/ChangeLog | 6 ++++++
gdb/compile/compile.c | 38 +++++++++++++++++++-------------------
2 files changed, 25 insertions(+), 19 deletions(-)

diff --git a/gdb/ChangeLog b/gdb/ChangeLog
index 2f1219f..2d0d71d 100644
--- a/gdb/ChangeLog
+++ b/gdb/ChangeLog
@@ -1,5 +1,11 @@
2017-05-02 Tom Tromey <tom@tromey.com>

+ * compile/compile.c (cleanup_unlink_file): Remove.
+ (compile_to_object): Use gdb::unlinker.
+ (eval_compile_command): Likewise.
+
+2017-05-02 Tom Tromey <tom@tromey.com>
+
* utils.h (make_cleanup_fclose): Remove.
* utils.c (do_fclose_cleanup, make_cleanup_fclose): Remove.

diff --git a/gdb/compile/compile.c b/gdb/compile/compile.c
index d8c505f..5269aaf 100644
--- a/gdb/compile/compile.c
+++ b/gdb/compile/compile.c
@@ -39,6 +39,8 @@
#include "osabi.h"
#include "gdb_wait.h"
#include "valprint.h"
+#include "common/gdb_optional.h"
+#include "common/gdb_unlinker.h"

\f

@@ -427,16 +429,6 @@ cleanup_compile_instance (void *arg)
inst->destroy (inst);
}

-/* A cleanup function to unlink a file. */
-
-static void
-cleanup_unlink_file (void *arg)
-{
- const char *filename = (const char *) arg;
-
- unlink (filename);
-}
-
/* A helper function suitable for use as the "print_callback" in the
compiler object. */

@@ -455,7 +447,7 @@ compile_to_object (struct command_line *cmd, const char *cmd_string,
enum compile_i_scope_types scope)
{
struct compile_instance *compiler;
- struct cleanup *cleanup, *inner_cleanup;
+ struct cleanup *cleanup;
const struct block *expr_block;
CORE_ADDR trash_pc, expr_pc;
int argc;
@@ -547,12 +539,15 @@ compile_to_object (struct command_line *cmd, const char *cmd_string,

compile_file_names fnames = get_new_file_names ();

+ gdb::optional<gdb::unlinker> source_remover;
+
{
gdb_file_up src = gdb_fopen_cloexec (fnames.source_file (), "w");
if (src == NULL)
perror_with_name (_("Could not open source file for writing"));
- inner_cleanup = make_cleanup (cleanup_unlink_file,
- (void *) fnames.source_file ());
+
+ source_remover.emplace (fnames.source_file ());
+
if (fputs (code.c_str (), src.get ()) == EOF)
perror_with_name (_("Could not write to source file"));
}
@@ -572,7 +567,9 @@ compile_to_object (struct command_line *cmd, const char *cmd_string,
fprintf_unfiltered (gdb_stdlog, "object file produced: %s\n\n",
fnames.object_file ());

- discard_cleanups (inner_cleanup);
+ /* Keep the source file. */
+ source_remover->keep ();
+
do_cleanups (cleanup);

return fnames;
@@ -594,14 +591,13 @@ void
eval_compile_command (struct command_line *cmd, const char *cmd_string,
enum compile_i_scope_types scope, void *scope_data)
{
- struct cleanup *cleanup_unlink;
struct compile_module *compile_module;

compile_file_names fnames = compile_to_object (cmd, cmd_string, scope);

- cleanup_unlink = make_cleanup (cleanup_unlink_file,
- (void *) fnames.object_file ());
- make_cleanup (cleanup_unlink_file, (void *) fnames.source_file ());
+ gdb::unlinker object_remover (fnames.object_file ());
+ gdb::unlinker source_remover (fnames.source_file ());
+
compile_module = compile_object_load (fnames, scope, scope_data);
if (compile_module == NULL)
{
@@ -610,7 +606,11 @@ eval_compile_command (struct command_line *cmd, const char *cmd_string,
COMPILE_I_PRINT_VALUE_SCOPE, scope_data);
return;
}
- discard_cleanups (cleanup_unlink);
+
+ /* Keep the files. */
+ source_remover.keep ();
+ object_remover.keep ();
+
compile_object_run (compile_module);
}

--
2.9.3