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Remove need for scope mutex, make Scope singly linked list tree with atomic pointers

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This commit is contained in:
gingerBill
2021-07-14 23:49:35 +01:00
parent 10f4d8df32
commit 981b9fb7a8
2 changed files with 9 additions and 18 deletions
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src/checker.cpp
+7 -12
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@@ -32,8 +32,7 @@ bool is_operand_undef(Operand o) {
void scope_reset(Scope *scope) {
if (scope == nullptr) return;
scope->first_child = nullptr;
scope->last_child = nullptr;
scope->head_child.store(nullptr, std::memory_order_relaxed);
string_map_clear(&scope->elements);
ptr_set_clear(&scope->imported);
}
@@ -233,10 +232,10 @@ Scope *create_scope(CheckerInfo *info, Scope *parent, isize init_elements_capaci
s->delayed_directives.allocator = heap_allocator();
if (parent != nullptr && parent != builtin_pkg->scope) {
// TODO(bill): make this an atomic operation
if (info) mutex_lock(&info->scope_mutex);
DLIST_APPEND(parent->first_child, parent->last_child, s);
if (info) mutex_unlock(&info->scope_mutex);
Scope *prev_head_child = parent->head_child.exchange(s, std::memory_order_acq_rel);
if (prev_head_child) {
prev_head_child->next.store(s, std::memory_order_release);
}
}
if (parent != nullptr && parent->flags & ScopeFlag_ContextDefined) {
@@ -305,7 +304,7 @@ void destroy_scope(Scope *scope) {
}
}
for (Scope *child = scope->first_child; child != nullptr; child = child->next) {
for (Scope *child = scope->head_child; child != nullptr; child = child->next) {
destroy_scope(child);
}
@@ -625,9 +624,7 @@ void check_scope_usage(Checker *c, Scope *scope) {
array_free(&vetted_entities);
for (Scope *child = scope->first_child;
child != nullptr;
child = child->next) {
for (Scope *child = scope->head_child; child != nullptr; child = child->next) {
if (child->flags & (ScopeFlag_Proc|ScopeFlag_Type|ScopeFlag_File)) {
// Ignore these
} else {
@@ -875,7 +872,6 @@ void init_checker_info(CheckerInfo *i) {
mutex_init(&i->deps_mutex);
mutex_init(&i->identifier_uses_mutex);
mutex_init(&i->foreign_mutex);
mutex_init(&i->scope_mutex);
#undef TIME_SECTION
}
@@ -906,7 +902,6 @@ void destroy_checker_info(CheckerInfo *i) {
mutex_destroy(&i->deps_mutex);
mutex_destroy(&i->identifier_uses_mutex);
mutex_destroy(&i->foreign_mutex);
mutex_destroy(&i->scope_mutex);
}
CheckerContext make_checker_context(Checker *c) {