mirror of
https://github.com/oxen-io/lokinet.git
synced 2024-11-11 07:10:36 +00:00
b4440094b0
- util::Mutex is now a std::shared_timed_mutex, which is capable of
exclusive and shared locks.
- util::Lock is still present as a std::lock_guard<util::Mutex>.
- the locking annotations are preserved, but updated to the latest
supported by clang rather than using abseil's older/deprecated ones.
- ACQUIRE_LOCK macro is gone since we don't pass mutexes by pointer into
locks anymore (WTF abseil).
- ReleasableLock is gone. Instead there are now some llarp::util helper
methods to obtain unique and/or shared locks:
- `auto lock = util::unique_lock(mutex);` gets an RAII-but-also
unlockable object (std::unique_lock<T>, with T inferred from
`mutex`).
- `auto lock = util::shared_lock(mutex);` gets an RAII shared (i.e.
"reader") lock of the mutex.
- `auto lock = util::unique_locks(mutex1, mutex2, mutex3);` can be
used to atomically lock multiple mutexes at once (returning a
tuple of the locks).
This are templated on the mutex which makes them a bit more flexible
than using a concrete type: they can be used for any type of lockable
mutex, not only util::Mutex. (Some of the code here uses them for
getting locks around a std::mutex). Until C++17, using the RAII types
is painfully verbose:
```C++
// pre-C++17 - needing to figure out the mutex type here is annoying:
std::unique_lock<util::Mutex> lock(mutex);
// pre-C++17 and even more verbose (but at least the type isn't needed):
std::unique_lock<decltype(mutex)> lock(mutex);
// our compromise:
auto lock = util::unique_lock(mutex);
// C++17:
std::unique_lock lock(mutex);
```
All of these functions will also warn (under gcc or clang) if you
discard the return value. You can also do fancy things like
`auto l = util::unique_lock(mutex, std::adopt_lock)` (which lets a
lock take over an already-locked mutex).
- metrics code is gone, which also removes a big pile of code that was
only used by metrics:
- llarp::util::Scheduler
- llarp:🧵:TimerQueue
- llarp::util::Stopwatch
126 lines
3.2 KiB
C++
126 lines
3.2 KiB
C++
#ifndef LLARP_ROUTER_OUTBOUND_SESSION_MAKER_HPP
|
|
#define LLARP_ROUTER_OUTBOUND_SESSION_MAKER_HPP
|
|
|
|
#include <router/i_outbound_session_maker.hpp>
|
|
|
|
#include <router/i_rc_lookup_handler.hpp>
|
|
#include <util/thread/logic.hpp>
|
|
#include <util/thread/threading.hpp>
|
|
#include <util/thread/thread_pool.hpp>
|
|
|
|
#include <profiling.hpp>
|
|
|
|
#include <unordered_map>
|
|
#include <list>
|
|
#include <memory>
|
|
|
|
struct llarp_nodedb;
|
|
|
|
namespace llarp
|
|
{
|
|
struct PendingSession;
|
|
|
|
struct ILinkManager;
|
|
struct I_RCLookupHandler;
|
|
|
|
struct OutboundSessionMaker final : public IOutboundSessionMaker
|
|
{
|
|
using CallbacksQueue = std::list< RouterCallback >;
|
|
|
|
public:
|
|
~OutboundSessionMaker() override = default;
|
|
|
|
bool
|
|
OnSessionEstablished(ILinkSession *session) override;
|
|
|
|
void
|
|
OnConnectTimeout(ILinkSession *session) override;
|
|
|
|
void
|
|
CreateSessionTo(const RouterID &router, RouterCallback on_result) override
|
|
EXCLUDES(_mutex);
|
|
|
|
void
|
|
CreateSessionTo(const RouterContact &rc, RouterCallback on_result) override
|
|
EXCLUDES(_mutex);
|
|
|
|
bool
|
|
HavePendingSessionTo(const RouterID &router) const override
|
|
EXCLUDES(_mutex);
|
|
|
|
void
|
|
ConnectToRandomRouters(int numDesired) override;
|
|
|
|
util::StatusObject
|
|
ExtractStatus() const override;
|
|
|
|
bool
|
|
ShouldConnectTo(const RouterID &router) const override EXCLUDES(_mutex);
|
|
|
|
void
|
|
Init(ILinkManager *linkManager, I_RCLookupHandler *rcLookup,
|
|
Profiling *profiler, std::shared_ptr< Logic > logic,
|
|
llarp_nodedb *nodedb,
|
|
std::shared_ptr< llarp::thread::ThreadPool > threadpool);
|
|
|
|
void
|
|
SetOurRouter(RouterID r)
|
|
{
|
|
us = std::move(r);
|
|
}
|
|
|
|
/// always maintain this many connections to other routers
|
|
size_t minConnectedRouters = 4;
|
|
/// hard upperbound limit on the number of router to router connections
|
|
size_t maxConnectedRouters = 6;
|
|
|
|
private:
|
|
void
|
|
DoEstablish(const RouterID &router) EXCLUDES(_mutex);
|
|
|
|
void
|
|
GotRouterContact(const RouterID &router, const RouterContact &rc)
|
|
EXCLUDES(_mutex);
|
|
|
|
void
|
|
InvalidRouter(const RouterID &router);
|
|
|
|
void
|
|
RouterNotFound(const RouterID &router);
|
|
|
|
void
|
|
OnRouterContactResult(const RouterID &router, const RouterContact *const rc,
|
|
const RCRequestResult result);
|
|
|
|
void
|
|
VerifyRC(const RouterContact rc);
|
|
|
|
void
|
|
CreatePendingSession(const RouterID &router) EXCLUDES(_mutex);
|
|
|
|
void
|
|
FinalizeRequest(const RouterID &router, const SessionResult type)
|
|
EXCLUDES(_mutex);
|
|
|
|
mutable util::Mutex _mutex; // protects pendingSessions, pendingCallbacks
|
|
|
|
std::unordered_map< RouterID, std::shared_ptr< PendingSession >,
|
|
RouterID::Hash >
|
|
pendingSessions GUARDED_BY(_mutex);
|
|
|
|
std::unordered_map< RouterID, CallbacksQueue, RouterID::Hash >
|
|
pendingCallbacks GUARDED_BY(_mutex);
|
|
|
|
ILinkManager *_linkManager = nullptr;
|
|
I_RCLookupHandler *_rcLookup = nullptr;
|
|
Profiling *_profiler = nullptr;
|
|
llarp_nodedb *_nodedb = nullptr;
|
|
std::shared_ptr< Logic > _logic;
|
|
std::shared_ptr< llarp::thread::ThreadPool > _threadpool;
|
|
RouterID us;
|
|
};
|
|
|
|
} // namespace llarp
|
|
|
|
#endif // LLARP_ROUTER_OUTBOUND_SESSION_MAKER_HPP
|