From 95bc9f0bf06637cf9c1147008ac32d6b00c42707 Mon Sep 17 00:00:00 2001 From: Tom Tromey Date: Sat, 29 Dec 2018 12:42:18 -0700 Subject: [PATCH] Change input_handler to take a unique_xmalloc_ptr This changes ui::input_handler to take a unique_xmalloc_ptr. This clarifies the ownership transfer of input_handler's argument. gdb/ChangeLog 2018-12-30 Tom Tromey * event-top.h (command_line_handler): Update. * top.c (class gdb_readline_wrapper_cleanup) : Update. (gdb_readline_wrapper_line): Update. * top.h (struct ui) : Take a unique_xmalloc_ptr. (handle_line_of_input): Update. * event-top.c: Update. (gdb_readline_no_editing_callback): Update. (command_line_handler): Take a unique_xmalloc_ptr. (handle_line_of_input): Take a const char *. (command_line_append_input_line): Take a const char *. --- gdb/ChangeLog | 14 ++++++++++++++ gdb/event-top.c | 18 ++++++++---------- gdb/event-top.h | 2 +- gdb/mi/mi-interp.c | 7 ++++--- gdb/top.c | 6 +++--- gdb/top.h | 4 ++-- 6 files changed, 32 insertions(+), 19 deletions(-) diff --git a/gdb/ChangeLog b/gdb/ChangeLog index 5ed91a84fc3..7be4360e623 100644 --- a/gdb/ChangeLog +++ b/gdb/ChangeLog @@ -1,3 +1,17 @@ +2018-12-30 Tom Tromey + + * event-top.h (command_line_handler): Update. + * top.c (class gdb_readline_wrapper_cleanup) : + Update. + (gdb_readline_wrapper_line): Update. + * top.h (struct ui) : Take a unique_xmalloc_ptr. + (handle_line_of_input): Update. + * event-top.c: Update. + (gdb_readline_no_editing_callback): Update. + (command_line_handler): Take a unique_xmalloc_ptr. + (handle_line_of_input): Take a const char *. + (command_line_append_input_line): Take a const char *. + 2018-12-28 Tom Tromey * source-cache.c (get_language_name): Conditionally compile. diff --git a/gdb/event-top.c b/gdb/event-top.c index 5852089f09c..7eef55bb8d9 100644 --- a/gdb/event-top.c +++ b/gdb/event-top.c @@ -210,7 +210,7 @@ gdb_rl_callback_handler (char *rl) noexcept TRY { - ui->input_handler (rl); + ui->input_handler (gdb::unique_xmalloc_ptr (rl)); } CATCH (ex, RETURN_MASK_ALL) { @@ -591,10 +591,10 @@ command_handler (const char *command) emulations, to CMD_LINE_BUFFER. Returns the command line if we have a whole command line ready to be processed by the command interpreter or NULL if the command line isn't complete yet (input - line ends in a backslash). Takes ownership of RL. */ + line ends in a backslash). */ static char * -command_line_append_input_line (struct buffer *cmd_line_buffer, char *rl) +command_line_append_input_line (struct buffer *cmd_line_buffer, const char *rl) { char *cmd; size_t len; @@ -615,9 +615,6 @@ command_line_append_input_line (struct buffer *cmd_line_buffer, char *rl) cmd = cmd_line_buffer->buffer; } - /* Allocated in readline. */ - xfree (rl); - return cmd; } @@ -643,7 +640,8 @@ command_line_append_input_line (struct buffer *cmd_line_buffer, char *rl) char * handle_line_of_input (struct buffer *cmd_line_buffer, - char *rl, int repeat, const char *annotation_suffix) + const char *rl, int repeat, + const char *annotation_suffix) { struct ui *ui = current_ui; int from_tty = ui->instream == ui->stdin_stream; @@ -746,13 +744,13 @@ handle_line_of_input (struct buffer *cmd_line_buffer, function. */ void -command_line_handler (char *rl) +command_line_handler (gdb::unique_xmalloc_ptr &&rl) { struct buffer *line_buffer = get_command_line_buffer (); struct ui *ui = current_ui; char *cmd; - cmd = handle_line_of_input (line_buffer, rl, 1, "prompt"); + cmd = handle_line_of_input (line_buffer, rl.get (), 1, "prompt"); if (cmd == (char *) EOF) { /* stdin closed. The connection with the terminal is gone. @@ -846,7 +844,7 @@ gdb_readline_no_editing_callback (gdb_client_data client_data) buffer_grow_char (&line_buffer, '\0'); result = buffer_finish (&line_buffer); - ui->input_handler (result); + ui->input_handler (gdb::unique_xmalloc_ptr (result)); } diff --git a/gdb/event-top.h b/gdb/event-top.h index a77303e5c34..1164f690719 100644 --- a/gdb/event-top.h +++ b/gdb/event-top.h @@ -35,7 +35,7 @@ extern void gdb_disable_readline (void); extern void async_init_signals (void); extern void change_line_handler (int); -extern void command_line_handler (char *rl); +extern void command_line_handler (gdb::unique_xmalloc_ptr &&rl); extern void command_handler (const char *command); #ifdef SIGTSTP diff --git a/gdb/mi/mi-interp.c b/gdb/mi/mi-interp.c index 9a317bc0ecd..fd446c20e69 100644 --- a/gdb/mi/mi-interp.c +++ b/gdb/mi/mi-interp.c @@ -43,7 +43,8 @@ interpreter. */ static void mi_execute_command_wrapper (const char *cmd); -static void mi_execute_command_input_handler (char *cmd); +static void mi_execute_command_input_handler + (gdb::unique_xmalloc_ptr &&cmd); /* These are hooks that we put in place while doing interpreter_exec so we can report interesting things that happened "behind the MI's @@ -294,14 +295,14 @@ mi_on_sync_execution_done (void) /* mi_execute_command_wrapper wrapper suitable for INPUT_HANDLER. */ static void -mi_execute_command_input_handler (char *cmd) +mi_execute_command_input_handler (gdb::unique_xmalloc_ptr &&cmd) { struct mi_interp *mi = as_mi_interp (top_level_interpreter ()); struct ui *ui = current_ui; ui->prompt_state = PROMPT_NEEDED; - mi_execute_command_wrapper (cmd); + mi_execute_command_wrapper (cmd.get ()); /* Print a prompt, indicating we're ready for further input, unless we just started a synchronous command. In that case, we're about diff --git a/gdb/top.c b/gdb/top.c index 4bcb4e28fbc..8b3fc5ee9a0 100644 --- a/gdb/top.c +++ b/gdb/top.c @@ -900,10 +900,10 @@ gdb_in_secondary_prompt_p (struct ui *ui) text. */ static void -gdb_readline_wrapper_line (char *line) +gdb_readline_wrapper_line (gdb::unique_xmalloc_ptr &&line) { gdb_assert (!gdb_readline_wrapper_done); - gdb_readline_wrapper_result = line; + gdb_readline_wrapper_result = line.release (); gdb_readline_wrapper_done = 1; /* Prevent operate-and-get-next from acting too early. */ @@ -972,7 +972,7 @@ public: private: - void (*m_handler_orig) (char *); + void (*m_handler_orig) (gdb::unique_xmalloc_ptr &&); int m_already_prompted_orig; /* Whether the target was async. */ diff --git a/gdb/top.h b/gdb/top.h index b34defa1f29..4d11f3443b0 100644 --- a/gdb/top.h +++ b/gdb/top.h @@ -81,7 +81,7 @@ struct ui /* The function to invoke when a complete line of input is ready for processing. */ - void (*input_handler) (char *); + void (*input_handler) (gdb::unique_xmalloc_ptr &&); /* True if this UI is using the readline library for command editing; false if using GDB's own simple readline emulation, with @@ -297,7 +297,7 @@ extern void show_history (const char *, int); extern void set_verbose (const char *, int, struct cmd_list_element *); extern char *handle_line_of_input (struct buffer *cmd_line_buffer, - char *rl, int repeat, + const char *rl, int repeat, const char *annotation_suffix); #endif -- 2.30.2