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Adopt owning_lock in builtin_commandline

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This commit is contained in:
ridiculousfish 2017-01-29 18:08:00 -08:00
parent 10a2275c34
commit 3569987c81
1 changed files with 17 additions and 26 deletions
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43
src/builtin_commandline.cpp
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@ -50,46 +50,37 @@ static const wchar_t *get_buffer() { return current_buffer; }
/// Returns the position of the cursor.
static size_t get_cursor_pos() { return current_cursor_pos; }
static pthread_mutex_t transient_commandline_lock = PTHREAD_MUTEX_INITIALIZER;
static wcstring_list_t *get_transient_stack() {
static owning_lock<wcstring_list_t> &get_transient_stack() {
ASSERT_IS_MAIN_THREAD();
ASSERT_IS_LOCKED(transient_commandline_lock);
// A pointer is a little more efficient than an object as a static because we can elide the
// thread-safe initialization.
static wcstring_list_t *result = NULL;
if (!result) {
result = new wcstring_list_t();
}
return result;
static owning_lock<wcstring_list_t> s_transient_stack;
return s_transient_stack;
}
static bool get_top_transient(wcstring *out_result) {
ASSERT_IS_MAIN_THREAD();
bool result = false;
scoped_lock locker(transient_commandline_lock);
const wcstring_list_t *stack = get_transient_stack();
if (!stack->empty()) {
out_result->assign(stack->back());
result = true;
auto locked = get_transient_stack().acquire();
wcstring_list_t &stack = locked.value;
if (stack.empty()) {
return false;
}
return result;
out_result->assign(stack.back());
return true;
}
builtin_commandline_scoped_transient_t::builtin_commandline_scoped_transient_t(
const wcstring &cmd) {
ASSERT_IS_MAIN_THREAD();
scoped_lock locker(transient_commandline_lock);
wcstring_list_t *stack = get_transient_stack();
stack->push_back(cmd);
this->token = stack->size();
auto locked = get_transient_stack().acquire();
wcstring_list_t &stack = locked.value;
stack.push_back(cmd);
this->token = stack.size();
}
builtin_commandline_scoped_transient_t::~builtin_commandline_scoped_transient_t() {
ASSERT_IS_MAIN_THREAD();
scoped_lock locker(transient_commandline_lock);
wcstring_list_t *stack = get_transient_stack();
assert(this->token == stack->size());
stack->pop_back();
auto locked = get_transient_stack().acquire();
wcstring_list_t &stack = locked.value;
assert(this->token == stack.size());
stack.pop_back();
}
/// Replace/append/insert the selection with/at/after the specified string.