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fix vector<> to support non-POD types

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adjust code to std::move and avoid unnecessary/illegal
This commit is contained in:
Nuno Lopes 2017-10-10 17:24:22 +01:00
parent 4d1acadabb
commit 9b54b4e784
35 changed files with 253 additions and 95 deletions
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58
src/util/hashtable.h
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@ -54,7 +54,7 @@ public:
bool is_used() const { return m_state == HT_USED; }
T & get_data() { return m_data; }
const T & get_data() const { return m_data; }
void set_data(const T & d) { m_data = d; m_state = HT_USED; }
void set_data(T && d) { m_data = std::move(d); m_state = HT_USED; }
void set_hash(unsigned h) { m_hash = h; }
void mark_as_deleted() { m_state = HT_DELETED; }
void mark_as_free() { m_state = HT_FREE; }
@ -187,10 +187,42 @@ protected:
}
}
static void move_table(entry * source, unsigned source_capacity, entry * target, unsigned target_capacity) {
SASSERT(target_capacity >= source_capacity);
unsigned target_mask = target_capacity - 1;
entry * source_end = source + source_capacity;
entry * target_end = target + target_capacity;
for (entry * source_curr = source; source_curr != source_end; ++source_curr) {
if (source_curr->is_used()) {
unsigned hash = source_curr->get_hash();
unsigned idx = hash & target_mask;
entry * target_begin = target + idx;
entry * target_curr = target_begin;
for (; target_curr != target_end; ++target_curr) {
SASSERT(!target_curr->is_deleted());
if (target_curr->is_free()) {
*target_curr = std::move(*source_curr);
goto end;
}
}
for (target_curr = target; target_curr != target_begin; ++target_curr) {
SASSERT(!target_curr->is_deleted());
if (target_curr->is_free()) {
*target_curr = std::move(*source_curr);
goto end;
}
}
UNREACHABLE();
end:
;
}
}
}
void expand_table() {
unsigned new_capacity = m_capacity << 1;
entry * new_table = alloc_table(new_capacity);
copy_table(m_table, m_capacity, new_table, new_capacity);
move_table(m_table, m_capacity, new_table, new_capacity);
delete_table();
m_table = new_table;
m_capacity = new_capacity;
@ -202,7 +234,7 @@ protected:
if (memory::is_out_of_memory())
return;
entry * new_table = alloc_table(m_capacity);
copy_table(m_table, m_capacity, new_table, m_capacity);
move_table(m_table, m_capacity, new_table, m_capacity);
delete_table();
m_table = new_table;
m_num_deleted = 0;
@ -321,7 +353,7 @@ public:
#define INSERT_LOOP_BODY() { \
if (curr->is_used()) { \
if (curr->get_hash() == hash && equals(curr->get_data(), e)) { \
curr->set_data(e); \
curr->set_data(std::move(e)); \
return; \
} \
HS_CODE(m_st_collision++;); \
@ -330,7 +362,7 @@ public:
entry * new_entry; \
if (del_entry) { new_entry = del_entry; m_num_deleted--; } \
else { new_entry = curr; } \
new_entry->set_data(e); \
new_entry->set_data(std::move(e)); \
new_entry->set_hash(hash); \
m_size++; \
return; \
@ -342,7 +374,7 @@ public:
} \
} ((void) 0)
void insert(data const & e) {
void insert(data && e) {
if ((m_size + m_num_deleted) << 2 > (m_capacity * 3)) {
// if ((m_size + m_num_deleted) * 2 > (m_capacity)) {
expand_table();
@ -363,6 +395,11 @@ public:
UNREACHABLE();
}
void insert(const data & e) {
data tmp(e);
insert(std::move(tmp));
}
#define INSERT_LOOP_CORE_BODY() { \
if (curr->is_used()) { \
if (curr->get_hash() == hash && equals(curr->get_data(), e)) { \
@ -375,7 +412,7 @@ public:
entry * new_entry; \
if (del_entry) { new_entry = del_entry; m_num_deleted--; } \
else { new_entry = curr; } \
new_entry->set_data(e); \
new_entry->set_data(std::move(e)); \
new_entry->set_hash(hash); \
m_size++; \
et = new_entry; \
@ -393,7 +430,7 @@ public:
Return true if it is a new element, and false otherwise.
Store the entry/slot of the table in et.
*/
bool insert_if_not_there_core(data const & e, entry * & et) {
bool insert_if_not_there_core(data && e, entry * & et) {
if ((m_size + m_num_deleted) << 2 > (m_capacity * 3)) {
// if ((m_size + m_num_deleted) * 2 > (m_capacity)) {
expand_table();
@ -415,6 +452,11 @@ public:
return 0;
}
bool insert_if_not_there_core(const data & e, entry * & et) {
data temp(e);
return insert_if_not_there_core(std::move(temp), et);
}
/**
\brief Insert the element e if it is not in the table.
Return a reference to e or to an object identical to e