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Optimize calls to get_path_kvp so that std::strings are not always created and deleted immediately.

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Turns out that the on-the-fly conversion from const char* (the KVP_OPTION_PATH
constants) to std::string with their immediate deletion afterwards is
a quite costly operation. Avoiding this is surprisingly easy: Just keep
local std::string objects at hand, and they don't have to be created
and deleted anymore.

The more optimized solution might be to turn the std::vector<std::string>
into a std::vector<GQuark>, but this commit at least improves the picture for now.
This commit is contained in:
Christian Stimming 2018-06-17 22:23:16 +02:00
parent 4aaa18eafc
commit 1e3a445007
1 changed files with 37 additions and 31 deletions
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68
libgnucash/engine/qofbook.cpp
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@ -128,6 +128,12 @@ qof_book_init (QofBook *book)
book->version = 0;
}
static const std::string str_KVP_OPTION_PATH(KVP_OPTION_PATH);
static const std::string str_OPTION_SECTION_ACCOUNTS(OPTION_SECTION_ACCOUNTS);
static const std::string str_OPTION_NAME_TRADING_ACCOUNTS(OPTION_NAME_TRADING_ACCOUNTS);
static const std::string str_OPTION_NAME_AUTO_READONLY_DAYS(OPTION_NAME_AUTO_READONLY_DAYS);
static const std::string str_OPTION_NAME_NUM_FIELD_SOURCE(OPTION_NAME_NUM_FIELD_SOURCE);
static void
qof_book_get_property (GObject* object,
guint prop_id,
@ -142,32 +148,32 @@ qof_book_get_property (GObject* object,
switch (prop_id)
{
case PROP_OPT_TRADING_ACCOUNTS:
qof_instance_get_path_kvp (QOF_INSTANCE (book), value, {KVP_OPTION_PATH,
OPTION_SECTION_ACCOUNTS, OPTION_NAME_TRADING_ACCOUNTS});
qof_instance_get_path_kvp (QOF_INSTANCE (book), value, {str_KVP_OPTION_PATH,
str_OPTION_SECTION_ACCOUNTS, str_OPTION_NAME_TRADING_ACCOUNTS});
break;
case PROP_OPT_BOOK_CURRENCY:
qof_instance_get_path_kvp (QOF_INSTANCE (book), value, {KVP_OPTION_PATH,
OPTION_SECTION_ACCOUNTS, OPTION_NAME_BOOK_CURRENCY});
qof_instance_get_path_kvp (QOF_INSTANCE (book), value, {str_KVP_OPTION_PATH,
str_OPTION_SECTION_ACCOUNTS, OPTION_NAME_BOOK_CURRENCY});
break;
case PROP_OPT_DEFAULT_GAINS_POLICY:
qof_instance_get_path_kvp (QOF_INSTANCE (book), value, {KVP_OPTION_PATH,
OPTION_SECTION_ACCOUNTS, OPTION_NAME_DEFAULT_GAINS_POLICY});
qof_instance_get_path_kvp (QOF_INSTANCE (book), value, {str_KVP_OPTION_PATH,
str_OPTION_SECTION_ACCOUNTS, OPTION_NAME_DEFAULT_GAINS_POLICY});
break;
case PROP_OPT_DEFAULT_GAINS_ACCOUNT_GUID:
qof_instance_get_path_kvp (QOF_INSTANCE (book), value, {KVP_OPTION_PATH,
OPTION_SECTION_ACCOUNTS, OPTION_NAME_DEFAULT_GAINS_LOSS_ACCT_GUID});
qof_instance_get_path_kvp (QOF_INSTANCE (book), value, {str_KVP_OPTION_PATH,
str_OPTION_SECTION_ACCOUNTS, OPTION_NAME_DEFAULT_GAINS_LOSS_ACCT_GUID});
break;
case PROP_OPT_AUTO_READONLY_DAYS:
qof_instance_get_path_kvp (QOF_INSTANCE (book), value, {KVP_OPTION_PATH,
OPTION_SECTION_ACCOUNTS, OPTION_NAME_AUTO_READONLY_DAYS});
qof_instance_get_path_kvp (QOF_INSTANCE (book), value, {str_KVP_OPTION_PATH,
str_OPTION_SECTION_ACCOUNTS, str_OPTION_NAME_AUTO_READONLY_DAYS});
break;
case PROP_OPT_NUM_FIELD_SOURCE:
qof_instance_get_path_kvp (QOF_INSTANCE (book), value, {KVP_OPTION_PATH,
OPTION_SECTION_ACCOUNTS, OPTION_NAME_NUM_FIELD_SOURCE});
qof_instance_get_path_kvp (QOF_INSTANCE (book), value, {str_KVP_OPTION_PATH,
str_OPTION_SECTION_ACCOUNTS, str_OPTION_NAME_NUM_FIELD_SOURCE});
break;
case PROP_OPT_DEFAULT_BUDGET:
qof_instance_get_path_kvp (QOF_INSTANCE (book), value, {KVP_OPTION_PATH,
OPTION_SECTION_ACCOUNTS, OPTION_NAME_DEFAULT_BUDGET});
qof_instance_get_path_kvp (QOF_INSTANCE (book), value, {str_KVP_OPTION_PATH,
str_OPTION_SECTION_ACCOUNTS, OPTION_NAME_DEFAULT_BUDGET});
break;
case PROP_OPT_FY_END:
qof_instance_get_path_kvp (QOF_INSTANCE (book), value, {"fy_end"});
@ -198,32 +204,32 @@ qof_book_set_property (GObject *object,
switch (prop_id)
{
case PROP_OPT_TRADING_ACCOUNTS:
qof_instance_set_path_kvp (QOF_INSTANCE (book), value, {KVP_OPTION_PATH,
OPTION_SECTION_ACCOUNTS, OPTION_NAME_TRADING_ACCOUNTS});
qof_instance_set_path_kvp (QOF_INSTANCE (book), value, {str_KVP_OPTION_PATH,
str_OPTION_SECTION_ACCOUNTS, str_OPTION_NAME_TRADING_ACCOUNTS});
break;
case PROP_OPT_BOOK_CURRENCY:
qof_instance_set_path_kvp (QOF_INSTANCE (book), value, {KVP_OPTION_PATH,
OPTION_SECTION_ACCOUNTS, OPTION_NAME_BOOK_CURRENCY});
qof_instance_set_path_kvp (QOF_INSTANCE (book), value, {str_KVP_OPTION_PATH,
str_OPTION_SECTION_ACCOUNTS, OPTION_NAME_BOOK_CURRENCY});
break;
case PROP_OPT_DEFAULT_GAINS_POLICY:
qof_instance_set_path_kvp (QOF_INSTANCE (book), value, {KVP_OPTION_PATH,
OPTION_SECTION_ACCOUNTS, OPTION_NAME_DEFAULT_GAINS_POLICY});
qof_instance_set_path_kvp (QOF_INSTANCE (book), value, {str_KVP_OPTION_PATH,
str_OPTION_SECTION_ACCOUNTS, OPTION_NAME_DEFAULT_GAINS_POLICY});
break;
case PROP_OPT_DEFAULT_GAINS_ACCOUNT_GUID:
qof_instance_set_path_kvp (QOF_INSTANCE (book), value, {KVP_OPTION_PATH,
OPTION_SECTION_ACCOUNTS, OPTION_NAME_DEFAULT_GAINS_LOSS_ACCT_GUID});
qof_instance_set_path_kvp (QOF_INSTANCE (book), value, {str_KVP_OPTION_PATH,
str_OPTION_SECTION_ACCOUNTS, OPTION_NAME_DEFAULT_GAINS_LOSS_ACCT_GUID});
break;
case PROP_OPT_AUTO_READONLY_DAYS:
qof_instance_set_path_kvp (QOF_INSTANCE (book), value, {KVP_OPTION_PATH,
OPTION_SECTION_ACCOUNTS, OPTION_NAME_AUTO_READONLY_DAYS});
qof_instance_set_path_kvp (QOF_INSTANCE (book), value, {str_KVP_OPTION_PATH,
str_OPTION_SECTION_ACCOUNTS, str_OPTION_NAME_AUTO_READONLY_DAYS});
break;
case PROP_OPT_NUM_FIELD_SOURCE:
qof_instance_set_path_kvp (QOF_INSTANCE (book), value, {KVP_OPTION_PATH,
OPTION_SECTION_ACCOUNTS, OPTION_NAME_NUM_FIELD_SOURCE});
qof_instance_set_path_kvp (QOF_INSTANCE (book), value, {str_KVP_OPTION_PATH,
str_OPTION_SECTION_ACCOUNTS, str_OPTION_NAME_NUM_FIELD_SOURCE});
break;
case PROP_OPT_DEFAULT_BUDGET:
qof_instance_set_path_kvp (QOF_INSTANCE (book), value, {KVP_OPTION_PATH,
OPTION_SECTION_ACCOUNTS, OPTION_NAME_DEFAULT_BUDGET});
qof_instance_set_path_kvp (QOF_INSTANCE (book), value, {str_KVP_OPTION_PATH,
str_OPTION_SECTION_ACCOUNTS, OPTION_NAME_DEFAULT_BUDGET});
break;
case PROP_OPT_FY_END:
qof_instance_set_path_kvp (QOF_INSTANCE (book), value, {"fy_end"});
@ -1164,7 +1170,7 @@ static Path gslist_to_option_path (GSList *gspath)
Path tmp_path;
if (!gspath) return tmp_path;
Path path_v {KVP_OPTION_PATH};
Path path_v {str_KVP_OPTION_PATH};
for (auto item = gspath; item != nullptr; item = g_slist_next(item))
tmp_path.push_back(static_cast<const char*>(item->data));
if (tmp_path.front() == "counters")
@ -1197,14 +1203,14 @@ qof_book_options_delete (QofBook *book, GSList *path)
KvpFrame *root = qof_instance_get_slots(QOF_INSTANCE (book));
if (path != nullptr)
{
Path path_v {KVP_OPTION_PATH};
Path path_v {str_KVP_OPTION_PATH};
Path tmp_path;
for (auto item = path; item != nullptr; item = g_slist_next(item))
tmp_path.push_back(static_cast<const char*>(item->data));
delete root->set_path(gslist_to_option_path(path), nullptr);
}
else
delete root->set_path({KVP_OPTION_PATH}, nullptr);
delete root->set_path({str_KVP_OPTION_PATH}, nullptr);
}
/* QofObject function implementation and registration */