| | |
| | | #include "defs.h" |
| | | #include "msg.h" |
| | | #include "shm_msg_queue.h" |
| | | #include "socket.h" |
| | | #include "shm_socket.h" |
| | | #include <boost/uuid/random_generator.hpp> |
| | | #include <boost/uuid/string_generator.hpp> |
| | | #include <boost/uuid/uuid.hpp> |
| | | #include <sys/file.h> |
| | | |
| | | namespace |
| | | { |
| | |
| | | static_assert(AllocSizeIndex[255] > uint32_t(-1), "Make sure alloc size correct."); |
| | | |
| | | const int64_t kCenterInfoFixedAddress = 1024 * 4; |
| | | const int64_t kShmMetaInfoFixedAddress = 1024 * 16; |
| | | |
| | | const boost::uuids::uuid kCenterInfoTag = boost::uuids::string_generator()("fc5007bd-0e62-4d91-95dc-948cf1f02e5a"); |
| | | const boost::uuids::uuid kMetaInfoTag = boost::uuids::string_generator()("fc5007bd-0e62-4d91-95dc-948cf1f02e5a"); |
| | | |
| | | struct BHomeMetaInfo { |
| | | boost::uuids::uuid tag_; |
| | | std::atomic<uint64_t> shm_id_; |
| | | std::atomic<uint64_t> ssn_id_; |
| | | }; |
| | | |
| | | struct CenterMetaInfo { |
| | | boost::uuids::uuid tag_; |
| | | CenterInfo info_; |
| | |
| | | template <class T = void> |
| | | T *Ptr(const int64_t offset) { return reinterpret_cast<T *>(offset); } |
| | | |
| | | class FileLock |
| | | { |
| | | public: |
| | | FileLock(const std::string &path) : |
| | | fd_(Open(path)) |
| | | { |
| | | if (fd_ == -1) { throw std::runtime_error("error open file:" + path); } |
| | | } |
| | | ~FileLock() { Close(fd_); } |
| | | bool try_lock() { return fd_ != -1 && (flock(fd_, LOCK_EX | LOCK_NB) == 0); } |
| | | void unlock() { flock(fd_, LOCK_UN); } |
| | | |
| | | private: |
| | | static int Open(const std::string &path) { return open(path.c_str(), O_RDONLY, 0666); } |
| | | static int Close(int fd) { return close(fd); } |
| | | int fd_; |
| | | std::mutex mtx_; |
| | | }; |
| | | |
| | | SharedMemory &BHomeMetaShm() |
| | | { |
| | | static std::string name("bhshmq_meta_v0"); |
| | | static SharedMemory shm(name, 1024 * 128); |
| | | return shm; |
| | | } |
| | | |
| | | ShmSocket &ShmSender(SharedMemory &shm, const bool reset) |
| | | { |
| | | typedef std::pair<void *, std::shared_ptr<ShmSocket>> Pair; |
| | | static std::vector<Pair> store; |
| | | static std::mutex s_mtx; |
| | | thread_local Pair local_cache; |
| | | |
| | | std::lock_guard<std::mutex> lk(s_mtx); |
| | | |
| | | if (reset) { |
| | | for (auto &kv : store) { |
| | | if (kv.first == &shm) { |
| | | auto &mq = GetCenterInfo(shm)->mq_sender_; |
| | | kv.second.reset(new ShmSocket(mq.offset_, shm, mq.id_)); |
| | | local_cache = kv; |
| | | return *local_cache.second; |
| | | } |
| | | } |
| | | } else if (local_cache.first == &shm) { |
| | | return *local_cache.second; |
| | | } |
| | | |
| | | for (auto &kv : store) { |
| | | if (kv.first == &shm) { |
| | | local_cache = kv; |
| | | return *local_cache.second; |
| | | } |
| | | } |
| | | auto &mq = GetCenterInfo(shm)->mq_sender_; |
| | | store.emplace_back(&shm, std::make_shared<ShmSocket>(mq.offset_, shm, mq.id_)); |
| | | // store.emplace_back(&shm, new ShmSocket(mq.offset_, shm, mq.id_)); |
| | | local_cache = store.back(); |
| | | return *local_cache.second; |
| | | } |
| | | } // namespace |
| | | |
| | | CenterInfo *GetCenterInfo(bhome_shm::SharedMemory &shm) |
| | | CenterInfo *GetCenterInfo(SharedMemory &shm) |
| | | { |
| | | auto pmeta = Ptr<CenterMetaInfo>(kCenterInfoFixedAddress + Addr(shm.get_address())); |
| | | if (pmeta->tag_ == kCenterInfoTag) { |
| | | if (pmeta->tag_ == kMetaInfoTag) { |
| | | return &pmeta->info_; |
| | | } |
| | | return nullptr; |
| | | } |
| | | |
| | | ShmSocket &DefaultSender(SharedMemory &shm) { return ShmSender(shm, false); } |
| | | |
| | | BHomeMetaInfo *GetBHomeMeta() |
| | | { |
| | | auto p = Ptr<BHomeMetaInfo>(kShmMetaInfoFixedAddress + Addr(BHomeMetaShm().get_address())); |
| | | return (p->tag_ == kMetaInfoTag) ? p : nullptr; |
| | | } |
| | | |
| | | bool ShmMetaInit() |
| | | { |
| | | SharedMemory &shm = BHomeMetaShm(); |
| | | |
| | | static FileLock fl("/dev/shm/" + shm.name()); |
| | | if (!fl.try_lock()) { // single center instance only. |
| | | return false; |
| | | } |
| | | |
| | | auto pmeta = GetBHomeMeta(); |
| | | if (pmeta && pmeta->tag_ == kMetaInfoTag) { |
| | | // remove old shm |
| | | SharedMemory::Remove(BHomeShmName()); |
| | | ++pmeta->shm_id_; // inc shm id |
| | | return true; // already exist. |
| | | } else { |
| | | Mutex *mutex = shm.FindOrCreate<Mutex>("bhshmq_meta_lock"); |
| | | if (!mutex || !mutex->try_lock()) { |
| | | return false; |
| | | } |
| | | DEFER1(mutex->unlock()); |
| | | |
| | | auto base = Addr(shm.get_address()); |
| | | auto offset = kShmMetaInfoFixedAddress; |
| | | void *p = shm.Alloc(offset * 2); |
| | | if (Addr(p) - base <= offset) { |
| | | pmeta = new (Ptr(offset + base)) BHomeMetaInfo; |
| | | pmeta->tag_ = kMetaInfoTag; |
| | | pmeta->shm_id_ = 100; |
| | | pmeta->ssn_id_ = 10000; |
| | | return true; |
| | | } |
| | | } |
| | | return false; |
| | | } |
| | | |
| | | // put center info at fixed memory position. |
| | | // as boost shm find object (find socket/mq by id, etc...) also locks inside, |
| | | // which node might crash inside and cause deadlock. |
| | | bool CenterInit(bhome_shm::SharedMemory &shm) |
| | | bool CenterInit() |
| | | { |
| | | Mutex *mutex = shm.Create<Mutex>("shm_center_lock"); |
| | | if (!ShmMetaInit()) { return false; } |
| | | |
| | | SharedMemory &shm = BHomeShm(); |
| | | Mutex *mutex = shm.FindOrCreate<Mutex>("shm_center_lock"); |
| | | if (!mutex || !mutex->try_lock()) { |
| | | return false; |
| | | } |
| | | DEFER1(mutex->unlock()); |
| | | |
| | | auto pmeta = Ptr<CenterMetaInfo>(kCenterInfoFixedAddress + Addr(shm.get_address())); |
| | | if (pmeta->tag_ == kCenterInfoTag) { |
| | | if (pmeta->tag_ == kMetaInfoTag) { |
| | | return true; |
| | | } else { |
| | | auto base = Addr(shm.get_address()); |
| | |
| | | |
| | | auto InitMQ = [&](auto &mq, auto &&id) { |
| | | mq.id_ = id; |
| | | ShmSocket tmp(shm, id, 16); |
| | | ShmSocket tmp(shm, id, eOpenOrCreate); |
| | | mq.offset_ = tmp.AbsAddr(); |
| | | }; |
| | | |
| | |
| | | InitMQ(info.mq_sender_, NextId()); |
| | | InitMQ(info.mq_center_, NextId()); |
| | | InitMQ(info.mq_bus_, NextId()); |
| | | InitMQ(info.mq_init_, NextId()); |
| | | |
| | | pmeta->tag_ = kCenterInfoTag; |
| | | pmeta->tag_ = kMetaInfoTag; |
| | | return true; |
| | | } |
| | | } |
| | | return false; |
| | | } |
| | | |
| | | uint64_t BHGlobalSenderAddress() { return GetCenterInfo(BHomeShm())->mq_sender_.id_; } |
| | | uint64_t BHTopicCenterAddress() { return GetCenterInfo(BHomeShm())->mq_center_.id_; } |
| | | uint64_t BHTopicBusAddress() { return GetCenterInfo(BHomeShm())->mq_bus_.id_; } |
| | | uint64_t BHCenterReplyAddress() { return GetCenterInfo(BHomeShm())->mq_init_.id_; } |
| | | const MQInfo &BHTopicCenterAddress(SharedMemory &shm) { return GetCenterInfo(shm)->mq_center_; } |
| | | const MQInfo &BHTopicBusAddress(SharedMemory &shm) { return GetCenterInfo(shm)->mq_bus_; } |
| | | bool BHNodeInit(SharedMemory &shm, const int64_t request, int64_t &reply) |
| | | { |
| | | return GetCenterInfo(shm)->init_rr_.ClientRequest(request, reply); |
| | | } |
| | | void BHCenterHandleInit(SharedMemory &shm, std::function<int64_t(const int64_t)> const &onReq) |
| | | { |
| | | GetCenterInfo(shm)->init_rr_.ServerProcess(onReq); |
| | | } |
| | | |
| | | int64_t CalcAllocIndex(int64_t size) |
| | | { |
| | |
| | | |
| | | std::string BHomeShmName() |
| | | { |
| | | return "bhome_default_shm_v0"; |
| | | } |
| | | bhome_shm::SharedMemory &BHomeShm() |
| | | { |
| | | static bhome_shm::SharedMemory shm(BHomeShmName(), 1024 * 1024 * 512); |
| | | return shm; |
| | | auto bhome_meta = Ptr<BHomeMetaInfo>(kShmMetaInfoFixedAddress + Addr(BHomeMetaShm().get_address())); |
| | | return "bhshmq_sid_" + std::to_string(bhome_meta->shm_id_.load()); |
| | | } |
| | | |
| | | bool GlobalInit(bhome_shm::SharedMemory &shm) |
| | | SharedMemory &BHomeShm() |
| | | { |
| | | MsgI::BindShm(shm); |
| | | CenterInfo *pinfo = GetCenterInfo(shm); |
| | | return pinfo && ShmMsgQueue::SetData(pinfo->mqid_); |
| | | static std::unique_ptr<SharedMemory> shm_ptr; |
| | | static std::string shm_name; |
| | | if (!shm_ptr || shm_name != BHomeShmName()) { |
| | | shm_name = BHomeShmName(); |
| | | if (shm_ptr) { |
| | | ShmSender(*shm_ptr, true); // reset sender. |
| | | } |
| | | shm_ptr.reset(new SharedMemory(shm_name, 1024 * 1024 * 512)); |
| | | } |
| | | return *shm_ptr; |
| | | } |
| | | |
| | | bool GlobalInit(SharedMemory &shm) { return GetCenterInfo(shm); } |
| | | |
| | | MQId NewSession() { return 10 * (++GetBHomeMeta()->ssn_id_); } |
| | | |
| | | void SetLastError(const int ec, const std::string &msg) |
| | | { |
| | |
| | | { |
| | | ec = LastErrorStore().ec_; |
| | | msg = LastErrorStore().msg_; |
| | | } |
| | | } |
| | | |
| | | int NodeTimeoutSec() { return 60; } |
| | | |
| | | std::string BHLogDir() { return "/opt/vasystem/valog/"; } |