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fixed race condition

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orignal 2023-02-14 09:33:10 -05:00
parent 1ad38c0b95
commit abb81c353d
1 changed files with 22 additions and 11 deletions
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29
libi2pd/Profiling.cpp
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@ -8,6 +8,7 @@
#include <sys/stat.h>
#include <unordered_map>
#include <thread>
#include <boost/property_tree/ptree.hpp>
#include <boost/property_tree/ini_parser.hpp>
#include "Base.h"
@ -22,6 +23,7 @@ namespace data
{
static i2p::fs::HashedStorage g_ProfilesStorage("peerProfiles", "p", "profile-", "txt");
static std::unordered_map<i2p::data::IdentHash, std::shared_ptr<RouterProfile> > g_Profiles;
static std::mutex g_ProfilesMutex;
static boost::posix_time::ptime GetTime ()
{
@ -213,11 +215,15 @@ namespace data
std::shared_ptr<RouterProfile> GetRouterProfile (const IdentHash& identHash)
{
auto it = g_Profiles.find (identHash);
if (it != g_Profiles.end ())
return it->second;
{
std::unique_lock<std::mutex> l(g_ProfilesMutex);
auto it = g_Profiles.find (identHash);
if (it != g_Profiles.end ())
return it->second;
}
auto profile = std::make_shared<RouterProfile> ();
profile->Load (identHash); // if possible
std::unique_lock<std::mutex> l(g_ProfilesMutex);
g_Profiles.emplace (identHash, profile);
return profile;
}
@ -231,6 +237,7 @@ namespace data
void PersistProfiles ()
{
auto ts = GetTime ();
std::unique_lock<std::mutex> l(g_ProfilesMutex);
for (auto it = g_Profiles.begin (); it != g_Profiles.end ();)
{
if ((ts - it->second->GetLastUpdateTime ()).total_seconds () > PEER_PROFILE_PERSIST_INTERVAL)
@ -247,6 +254,7 @@ namespace data
void SaveProfiles ()
{
auto ts = GetTime ();
std::unique_lock<std::mutex> l(g_ProfilesMutex);
for (auto it: g_Profiles)
if (it.second->IsUpdated () && (ts - it.second->GetLastUpdateTime ()).total_seconds () < PEER_PROFILE_EXPIRATION_TIMEOUT*3600)
it.second->Save (it.first);
@ -255,13 +263,16 @@ namespace data
void DeleteObsoleteProfiles ()
{
auto ts = GetTime ();
for (auto it = g_Profiles.begin (); it != g_Profiles.end ();)
{
if ((ts - it->second->GetLastUpdateTime ()).total_seconds () >= PEER_PROFILE_EXPIRATION_TIMEOUT*3600)
it = g_Profiles.erase (it);
else
it++;
auto ts = GetTime ();
std::unique_lock<std::mutex> l(g_ProfilesMutex);
for (auto it = g_Profiles.begin (); it != g_Profiles.end ();)
{
if ((ts - it->second->GetLastUpdateTime ()).total_seconds () >= PEER_PROFILE_EXPIRATION_TIMEOUT*3600)
it = g_Profiles.erase (it);
else
it++;
}
}
struct stat st;