lokinet/llarp/profiling.hpp
Jeff c743022cfb
try fixing deadlock (#1454)
* fix deadlock in #1453

* remove use of shared_lock in profiling
* clean up Save and Load to acquire lock
* bencode and bdecode are now non locking

* remove all places using std::shared_lock

* bail if write fails
2020-11-05 06:19:43 -05:00

125 lines
2.7 KiB
C++

#ifndef LLARP_PROFILING_HPP
#define LLARP_PROFILING_HPP
#include <path/path.hpp>
#include <router_id.hpp>
#include <util/bencode.hpp>
#include <util/thread/threading.hpp>
#include <util/thread/annotations.hpp>
#include <map>
namespace llarp
{
struct RouterProfile
{
static constexpr size_t MaxSize = 256;
uint64_t connectTimeoutCount = 0;
uint64_t connectGoodCount = 0;
uint64_t pathSuccessCount = 0;
uint64_t pathFailCount = 0;
uint64_t pathTimeoutCount = 0;
llarp_time_t lastUpdated = 0s;
llarp_time_t lastDecay = 0s;
uint64_t version = LLARP_PROTO_VERSION;
bool
BEncode(llarp_buffer_t* buf) const;
bool
DecodeKey(const llarp_buffer_t& k, llarp_buffer_t* buf);
bool
IsGood(uint64_t chances) const;
bool
IsGoodForConnect(uint64_t chances) const;
bool
IsGoodForPath(uint64_t chances) const;
/// decay stats
void
Decay();
// rotate stats if timeout reached
void
Tick();
};
struct Profiling
{
Profiling();
/// generic variant
bool
IsBad(const RouterID& r, uint64_t chances = 8) EXCLUDES(m_ProfilesMutex);
/// check if this router should have paths built over it
bool
IsBadForPath(const RouterID& r, uint64_t chances = 8) EXCLUDES(m_ProfilesMutex);
/// check if this router should be connected directly to
bool
IsBadForConnect(const RouterID& r, uint64_t chances = 8) EXCLUDES(m_ProfilesMutex);
void
MarkConnectTimeout(const RouterID& r) EXCLUDES(m_ProfilesMutex);
void
MarkConnectSuccess(const RouterID& r) EXCLUDES(m_ProfilesMutex);
void
MarkPathTimeout(path::Path* p) EXCLUDES(m_ProfilesMutex);
void
MarkPathFail(path::Path* p) EXCLUDES(m_ProfilesMutex);
void
MarkPathSuccess(path::Path* p) EXCLUDES(m_ProfilesMutex);
void
MarkHopFail(const RouterID& r) EXCLUDES(m_ProfilesMutex);
void
ClearProfile(const RouterID& r) EXCLUDES(m_ProfilesMutex);
void
Tick() EXCLUDES(m_ProfilesMutex);
bool
BEncode(llarp_buffer_t* buf) const;
bool
BDecode(llarp_buffer_t* buf);
bool
DecodeKey(const llarp_buffer_t& k, llarp_buffer_t* buf) NO_THREAD_SAFETY_ANALYSIS;
// disabled because we do load -> bencode::BDecodeReadFromFile -> DecodeKey
bool
Load(const fs::path fname) EXCLUDES(m_ProfilesMutex);
bool
Save(const fs::path fname) EXCLUDES(m_ProfilesMutex);
bool
ShouldSave(llarp_time_t now) const;
void
Disable();
void
Enable();
private:
mutable util::Mutex m_ProfilesMutex; // protects m_Profiles
std::map<RouterID, RouterProfile> m_Profiles GUARDED_BY(m_ProfilesMutex);
llarp_time_t m_LastSave = 0s;
std::atomic<bool> m_DisableProfiling;
};
} // namespace llarp
#endif