Toolchain/binutils-gdb
1
0
Fork 0
forked from Imagelibrary/binutils-gdb
Code Pull Requests Activity

Lazy language setting

Browse Source 
When gdb starts up with a symbol file, it uses the program's "main" to
decide the "static context" and the initial language.  With background
DWARF reading, this means that gdb has to wait for a significant
amount of DWARF to be read synchronously.

This patch introduces lazy language setting.  The idea here is that in
many cases, the prompt can show up early, making gdb feel more
responsive.
This commit is contained in:
Tom Tromey
2023-03-29 10:55:13 -06:00
parent c83a280218
commit 0a008773c5
5 changed files with 73 additions and 18 deletions
Download Patch File Download Diff File Expand all files Collapse all files

27
gdb/language.h
View File

@@ -787,6 +787,10 @@ extern void language_info ();
extern void set_language (enum language lang);
typedef void lazily_set_language_ftype ();
extern void lazily_set_language (lazily_set_language_ftype *fun);
/* Test a character to decide whether it can be printed in literal form
or needs to be printed in another representation. For example,
in C the literal form of the character with octal value 141 is 'a'
@@ -837,14 +841,14 @@ class scoped_restore_current_language
{
public:
explicit scoped_restore_current_language ()
: m_lang (current_language->la_language)
{
}
scoped_restore_current_language ();
~scoped_restore_current_language ();
~scoped_restore_current_language ()
scoped_restore_current_language (scoped_restore_current_language &&other)
{
set_language (m_lang);
m_lang = other.m_lang;
m_fun = other.m_fun;
other.dont_restore ();
}
scoped_restore_current_language (const scoped_restore_current_language &)
@@ -852,9 +856,18 @@ public:
scoped_restore_current_language &operator=
(const scoped_restore_current_language &) = delete;
/* Cancel restoring on scope exit. */
void dont_restore ()
{
/* This is implemented using a sentinel value. */
m_lang = nullptr;
m_fun = nullptr;
}
private:
enum language m_lang;
const language_defn *m_lang;
lazily_set_language_ftype *m_fun;
};
/* If language_mode is language_mode_auto,