* [PATCH] XML writer: adjust tracking of emitted declarations
@ 2021-11-24 15:44 Matthias Maennich
2021-11-29 9:00 ` Dodji Seketeli
0 siblings, 1 reply; 2+ messages in thread
From: Matthias Maennich @ 2021-11-24 15:44 UTC (permalink / raw)
To: libabigail; +Cc: dodji, gprocida, kernel-team, maennich
Replace the std::unordered_map used to track emitted declarations with a
std::unordered_set as the map only ever held "true". The container
itself does not need to be marked mutable because record_decl_as_emitted
is called in a non-const context and can itself be made non-const. In
addition, the method decl_is_emitted calls a helper which no longer used
anywhere else and can be inlined. The remaining two methods are always
called on non-type declarations, so the test that existed in
decl_is_emitted can be dropped.
* abg-writer.cc (write_context): Replace mutable
m_emitted_decls_map with plain m_emitted_decls_set.
(decl_name_is_emitted): Inlined into decl_is_emitted; dropped.
(decl_is_emitted): Drop is_type check and inline
decl_name_is_emitted. Look up in set instead of map.
(record_decl_as_emitted): Make non-const. Insert into set
instead of map.
Reviewed-by: Giuliano Procida <gprocida@google.com>
Signed-off-by: Matthias Maennich <maennich@google.com>
---
src/abg-writer.cc | 25 ++++---------------------
1 file changed, 4 insertions(+), 21 deletions(-)
diff --git a/src/abg-writer.cc b/src/abg-writer.cc
index 693f99c6528d..f7efd671a485 100644
--- a/src/abg-writer.cc
+++ b/src/abg-writer.cc
@@ -168,9 +168,7 @@ class write_context
class_tmpl_shared_ptr_map m_class_tmpl_id_map;
string_elf_symbol_sptr_map_type m_fun_symbol_map;
string_elf_symbol_sptr_map_type m_var_symbol_map;
- mutable unordered_map<interned_string,
- bool,
- hash_interned_string> m_emitted_decls_map;
+ unordered_set<interned_string, hash_interned_string> m_emitted_decls_set;
write_context();
@@ -747,17 +745,6 @@ public:
type_is_emitted(const type_base_sptr& t) const
{return type_is_emitted(t.get());}
- /// Test if the name of a given decl has been written out to the XML
- /// output.
- ///
- /// @param the decl to consider.
- ///
- /// @return true if the decl has already been emitted, false
- /// otherwise.
- bool
- decl_name_is_emitted(const interned_string& name) const
- {return m_emitted_decls_map.find(name) != m_emitted_decls_map.end();}
-
/// Test if a given decl has been written out to the XML output.
///
/// @param the decl to consider.
@@ -767,13 +754,9 @@ public:
bool
decl_is_emitted(decl_base_sptr& decl) const
{
- if (is_type(decl))
- return false;
-
string repr = get_pretty_representation(decl, true);
interned_string irepr = decl->get_environment()->intern(repr);
- bool is_emitted = decl_name_is_emitted(irepr);
- return is_emitted;
+ return m_emitted_decls_set.find(irepr) != m_emitted_decls_set.end();
}
/// Record a declaration-only class as being emitted.
@@ -829,11 +812,11 @@ public:
///
/// @param decl the decl to consider.
void
- record_decl_as_emitted(const decl_base_sptr &decl)const
+ record_decl_as_emitted(const decl_base_sptr& decl)
{
string repr = get_pretty_representation(decl, true);
interned_string irepr = decl->get_environment()->intern(repr);
- m_emitted_decls_map[irepr] = true;
+ m_emitted_decls_set.insert(irepr);
}
/// Get the set of types that have been emitted.
--
2.34.0.rc2.393.gf8c9666880-goog
^ permalink raw reply [flat|nested] 2+ messages in thread
* Re: [PATCH] XML writer: adjust tracking of emitted declarations
2021-11-24 15:44 [PATCH] XML writer: adjust tracking of emitted declarations Matthias Maennich
@ 2021-11-29 9:00 ` Dodji Seketeli
0 siblings, 0 replies; 2+ messages in thread
From: Dodji Seketeli @ 2021-11-29 9:00 UTC (permalink / raw)
To: Matthias Maennich; +Cc: libabigail, gprocida, kernel-team
Hello,
Matthias Maennich <maennich@google.com> a écrit:
[...]
> decl_is_emitted(decl_base_sptr& decl) const
> {
> - if (is_type(decl))
> - return false;
> -
Rather than dropping this test, I have turned it into an assert.
[...]
> Replace the std::unordered_map used to track emitted declarations with a
> std::unordered_set as the map only ever held "true". The container
> itself does not need to be marked mutable because record_decl_as_emitted
> is called in a non-const context and can itself be made non-const. In
> addition, the method decl_is_emitted calls a helper which no longer used
> anywhere else and can be inlined. The remaining two methods are always
> called on non-type declarations, so the test that existed in
> decl_is_emitted can be dropped.
>
> * abg-writer.cc (write_context): Replace mutable
> m_emitted_decls_map with plain m_emitted_decls_set.
> (decl_name_is_emitted): Inlined into decl_is_emitted; dropped.
> (decl_is_emitted): Drop is_type check and inline
> decl_name_is_emitted. Look up in set instead of map.
> (record_decl_as_emitted): Make non-const. Insert into set
> instead of map.
>
> Reviewed-by: Giuliano Procida <gprocida@google.com>
> Signed-off-by: Matthias Maennich <maennich@google.com>
Applied the amended version to master. Thanks!
I am attaching the committed patch below.
Cheers,
From ce38bd24cd20561c7ebb12e615ba9457feab9e8f Mon Sep 17 00:00:00 2001
From: Matthias Maennich <maennich@google.com>
Date: Wed, 24 Nov 2021 15:44:12 +0000
Subject: [PATCH] XML writer: adjust tracking of emitted declarations
Replace the std::unordered_map used to track emitted declarations with a
std::unordered_set as the map only ever held "true". The container
itself does not need to be marked mutable because record_decl_as_emitted
is called in a non-const context and can itself be made non-const. In
addition, the method decl_is_emitted calls a helper which no longer used
anywhere else and can be inlined. The remaining two methods are always
called on non-type declarations, so the test that existed in
decl_is_emitted can be dropped.
* abg-writer.cc (write_context): Replace mutable
m_emitted_decls_map with plain m_emitted_decls_set.
(decl_name_is_emitted): Inlined into decl_is_emitted; dropped.
(decl_is_emitted): Turn the is_type check into an assert and
inline decl_name_is_emitted. Look up in set instead of map.
(record_decl_as_emitted): Make non-const. Insert into set
instead of map.
Reviewed-by: Giuliano Procida <gprocida@google.com>
Signed-off-by: Matthias Maennich <maennich@google.com>
Signed-off-by: Dodji Seketeli <dodji@redhat.com>
---
src/abg-writer.cc | 26 +++++---------------------
1 file changed, 5 insertions(+), 21 deletions(-)
diff --git a/src/abg-writer.cc b/src/abg-writer.cc
index 693f99c6..21b79e88 100644
--- a/src/abg-writer.cc
+++ b/src/abg-writer.cc
@@ -168,9 +168,7 @@ class write_context
class_tmpl_shared_ptr_map m_class_tmpl_id_map;
string_elf_symbol_sptr_map_type m_fun_symbol_map;
string_elf_symbol_sptr_map_type m_var_symbol_map;
- mutable unordered_map<interned_string,
- bool,
- hash_interned_string> m_emitted_decls_map;
+ unordered_set<interned_string, hash_interned_string> m_emitted_decls_set;
write_context();
@@ -747,17 +745,6 @@ public:
type_is_emitted(const type_base_sptr& t) const
{return type_is_emitted(t.get());}
- /// Test if the name of a given decl has been written out to the XML
- /// output.
- ///
- /// @param the decl to consider.
- ///
- /// @return true if the decl has already been emitted, false
- /// otherwise.
- bool
- decl_name_is_emitted(const interned_string& name) const
- {return m_emitted_decls_map.find(name) != m_emitted_decls_map.end();}
-
/// Test if a given decl has been written out to the XML output.
///
/// @param the decl to consider.
@@ -767,13 +754,10 @@ public:
bool
decl_is_emitted(decl_base_sptr& decl) const
{
- if (is_type(decl))
- return false;
-
+ ABG_ASSERT(!is_type(decl));
string repr = get_pretty_representation(decl, true);
interned_string irepr = decl->get_environment()->intern(repr);
- bool is_emitted = decl_name_is_emitted(irepr);
- return is_emitted;
+ return m_emitted_decls_set.find(irepr) != m_emitted_decls_set.end();
}
/// Record a declaration-only class as being emitted.
@@ -829,11 +813,11 @@ public:
///
/// @param decl the decl to consider.
void
- record_decl_as_emitted(const decl_base_sptr &decl)const
+ record_decl_as_emitted(const decl_base_sptr& decl)
{
string repr = get_pretty_representation(decl, true);
interned_string irepr = decl->get_environment()->intern(repr);
- m_emitted_decls_map[irepr] = true;
+ m_emitted_decls_set.insert(irepr);
}
/// Get the set of types that have been emitted.
--
2.33.1
--
Dodji
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