void
Lock_Destroy_IMP(Lock *self) {
LockIVARS *const ivars = Lock_IVARS(self);
DECREF(ivars->folder);
DECREF(ivars->name);
SUPER_DESTROY(self, LOCK);
}
Lock*
Lock_init(Lock *self, Folder *folder, String *name, int32_t timeout,
int32_t interval) {
LockIVARS *const ivars = Lock_IVARS(self);
// Validate.
if (interval <= 0) {
DECREF(self);
THROW(ERR, "Invalid value for 'interval': %i32", interval);
}
StringIterator *iter = Str_Top(name);
int32_t code_point;
while (STR_OOB != (code_point = StrIter_Next(iter))) {
if (isalnum(code_point)
|| code_point == '.'
|| code_point == '-'
|| code_point == '_'
) {
continue;
}
DECREF(self);
THROW(ERR, "Lock name contains disallowed characters: '%o'", name);
}
DECREF(iter);
// Assign.
ivars->folder = (Folder*)INCREF(folder);
ivars->timeout = timeout;
ivars->name = Str_Clone(name);
ivars->interval = interval;
return self;
}
bool
Lock_Obtain_IMP(Lock *self) {
LockIVARS *const ivars = Lock_IVARS(self);
int32_t time_left = ivars->interval == 0 ? 0 : ivars->timeout;
bool locked = Lock_Request(self);
while (!locked) {
time_left -= ivars->interval;
if (time_left <= 0) { break; }
Sleep_millisleep(ivars->interval);
locked = Lock_Request(self);
}
if (!locked) { ERR_ADD_FRAME(Err_get_error()); }
return locked;
}
String*
Lock_Get_Host_IMP(Lock *self) {
return Lock_IVARS(self)->host;
}
String*
Lock_Get_Lock_Path_IMP(Lock *self) {
return Lock_IVARS(self)->lock_path;
}
String*
Lock_Get_Name_IMP(Lock *self) {
return Lock_IVARS(self)->name;
}
