gdb: fix vfork with multiple threads

[deliverable/binutils-gdb.git] / gdb / top.h

diff --git a/gdb/top.h b/gdb/top.h
index 452a381951445aad81a05eb79071c3edbd4988bc..56bd06c698bee10d86710f78c7f84df7cac5e518 100644 (file)
--- a/gdb/top.h
+++ b/gdb/top.h
@@ -1,6 +1,6 @@
 /* Top level stuff for GDB, the GNU debugger.
 
-   Copyright (C) 1986-2017 Free Software Foundation, Inc.
+   Copyright (C) 1986-2021 Free Software Foundation, Inc.
 
    This file is part of GDB.
 
@@ -20,8 +20,10 @@
 #ifndef TOP_H
 #define TOP_H
 
-#include "buffer.h"
-#include "event-loop.h"
+#include "gdbsupport/buffer.h"
+#include "gdbsupport/event-loop.h"
+#include "gdbsupport/next-iterator.h"
+#include "value.h"
 
 struct tl_interp_info;
 
@@ -54,6 +56,12 @@ enum prompt_state
 
 struct ui
 {
+  /* Create a new UI.  */
+  ui (FILE *instream, FILE *outstream, FILE *errstream);
+  ~ui ();
+
+  DISABLE_COPY_AND_ASSIGN (ui);
+
   /* Pointer to next in singly-linked list.  */
   struct ui *next;
 
@@ -74,7 +82,7 @@ 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<char> &&);
 
   /* True if this UI is using the readline library for command
      editing; false if using GDB's own simple readline emulation, with
@@ -165,6 +173,8 @@ public:
     current_ui = ui_list;
   }
 
+  DISABLE_COPY_AND_ASSIGN (switch_thru_all_uis);
+
   /* If done iterating, return true; otherwise return false.  */
   bool done () const
   {
@@ -182,11 +192,6 @@ public:
 
  private:
 
-  /* No need for these.  They are intentionally not defined
-     anywhere.  */
-  switch_thru_all_uis &operator= (const switch_thru_all_uis &);
-  switch_thru_all_uis (const switch_thru_all_uis &);
-
   /* Used to iterate through the UIs.  */
   struct ui *m_iter;
 
@@ -199,16 +204,12 @@ public:
 #define SWITCH_THRU_ALL_UIS()          \
   for (switch_thru_all_uis stau_state; !stau_state.done (); stau_state.next ())
 
-/* Traverse over all UIs.  */
-#define ALL_UIS(UI)                            \
-  for (UI = ui_list; UI; UI = UI->next)                \
-
-/* Create a new UI.  */
-extern struct ui *new_ui (FILE *instream, FILE *outstream, FILE *errstream);
-extern void delete_ui (struct ui *todel);
-
-/* Cleanup that deletes a UI.  */
-extern struct cleanup *make_delete_ui_cleanup (struct ui *ui);
+/* An adapter that can be used to traverse over all UIs.  */
+static inline
+next_adapter<ui> all_uis ()
+{
+  return next_adapter<ui> (ui_list);
+}
 
 /* Register the UI's input file descriptor in the event loop.  */
 extern void ui_register_input_event_handler (struct ui *ui);
@@ -217,14 +218,16 @@ extern void ui_register_input_event_handler (struct ui *ui);
 extern void ui_unregister_input_event_handler (struct ui *ui);
 
 /* From top.c.  */
-extern char *saved_command_line;
-extern int in_user_command;
-extern int confirm;
-extern char gdb_dirbuf[1024];
+extern bool confirm;
 extern int inhibit_gdbinit;
-extern const char gdbinit[];
 
-extern void print_gdb_version (struct ui_file *);
+/* Print the GDB version banner to STREAM.  If INTERACTIVE is false,
+   then information referring to commands (e.g., "show configuration")
+   is omitted; this mode is used for the --version command line
+   option.  If INTERACTIVE is true, then interactive commands are
+   mentioned.  */
+extern void print_gdb_version (struct ui_file *stream, bool interactive);
+
 extern void print_gdb_configuration (struct ui_file *);
 
 extern void read_command_file (FILE *);
@@ -232,9 +235,9 @@ extern void init_history (void);
 extern void command_loop (void);
 extern int quit_confirm (void);
 extern void quit_force (int *, int);
-extern void quit_command (char *, int);
+extern void quit_command (const char *, int);
 extern void quit_cover (void);
-extern void execute_command (char *, int);
+extern void execute_command (const char *, int);
 
 /* If the interpreter is in sync mode (we're running a user command's
    list, running command hooks or similars), and we just ran a
@@ -252,7 +255,7 @@ extern void check_frame_language_change (void);
 /* Prepare for execution of a command.
    Call this before every command, CLI or MI.
    Returns a cleanup to be run after the command is completed.  */
-extern struct cleanup *prepare_execute_command (void);
+extern scoped_value_mark prepare_execute_command (void);
 
 /* This function returns a pointer to the string that is used
    by gdb for its command prompt.  */
@@ -267,34 +270,30 @@ extern void set_prompt (const char *s);
 
 extern int gdb_in_secondary_prompt_p (struct ui *ui);
 
-/* From random places.  */
-extern int readnow_symbol_files;
-
 /* Perform _initialize initialization.  */
-extern void gdb_init (char *);
+extern void gdb_init ();
 
 /* For use by event-top.c.  */
 /* Variables from top.c.  */
 extern int source_line_number;
-extern const char *source_file_name;
-extern int history_expansion_p;
-extern int server_command;
+extern std::string source_file_name;
+extern bool history_expansion_p;
+extern bool server_command;
 extern char *lim_at_start;
 
 extern void gdb_add_history (const char *);
 
-extern void show_commands (char *args, int from_tty);
-
-extern void set_history (char *, int);
-
-extern void show_history (char *, int);
+extern void show_commands (const char *args, int from_tty);
 
-extern void set_verbose (char *, int, struct cmd_list_element *);
-
-extern void do_restore_instream_cleanup (void *stream);
+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);
 
+/* Call at startup to see if the user has requested that gdb start up
+   quietly.  */
+
+extern bool check_quiet_mode ();
+
 #endif