From 675b4aa878f16291ce33fced48a2bc7425f635ae Mon Sep 17 00:00:00 2001 From: Alexander Harkness Date: Sun, 24 Nov 2013 14:19:41 +0000 Subject: Moved source to src --- source/DeadlockDetect.cpp | 147 ---------------------------------------------- 1 file changed, 147 deletions(-) delete mode 100644 source/DeadlockDetect.cpp (limited to 'source/DeadlockDetect.cpp') diff --git a/source/DeadlockDetect.cpp b/source/DeadlockDetect.cpp deleted file mode 100644 index c774c9dce..000000000 --- a/source/DeadlockDetect.cpp +++ /dev/null @@ -1,147 +0,0 @@ - -// DeadlockDetect.cpp - -// Declares the cDeadlockDetect class that tries to detect deadlocks and aborts the server when it detects one - -#include "Globals.h" -#include "DeadlockDetect.h" -#include "Root.h" -#include "World.h" - - - - - -/// Number of milliseconds per cycle -const int CYCLE_MILLISECONDS = 100; - -/// When the number of cycles for the same world age hits this value, it is considered a deadlock -const int NUM_CYCLES_LIMIT = 200; // 200 = twenty seconds - - - - - -cDeadlockDetect::cDeadlockDetect(void) : - super("DeadlockDetect") -{ -} - - - - - -bool cDeadlockDetect::Start(void) -{ - // Read the initial world data: - class cFillIn : - public cWorldListCallback - { - public: - cFillIn(cDeadlockDetect * a_Detect) : - m_Detect(a_Detect) - { - } - - virtual bool Item(cWorld * a_World) override - { - m_Detect->SetWorldAge(a_World->GetName(), a_World->GetWorldAge()); - return false; - } - - protected: - cDeadlockDetect * m_Detect; - } FillIn(this); - cRoot::Get()->ForEachWorld(FillIn); - return super::Start(); -} - - - - - -void cDeadlockDetect::Execute(void) -{ - // Loop until the signal to terminate: - while (!m_ShouldTerminate) - { - // Check the world ages: - class cChecker : - public cWorldListCallback - { - public: - cChecker(cDeadlockDetect * a_Detect) : - m_Detect(a_Detect) - { - } - - protected: - cDeadlockDetect * m_Detect; - - virtual bool Item(cWorld * a_World) override - { - m_Detect->CheckWorldAge(a_World->GetName(), a_World->GetWorldAge()); - return false; - } - } Checker(this); - cRoot::Get()->ForEachWorld(Checker); - - cSleep::MilliSleep(CYCLE_MILLISECONDS); - } // while (should run) -} - - - - - -void cDeadlockDetect::SetWorldAge(const AString & a_WorldName, Int64 a_Age) -{ - m_WorldAges[a_WorldName].m_Age = a_Age; - m_WorldAges[a_WorldName].m_NumCyclesSame = 0; -} - - - - - -void cDeadlockDetect::CheckWorldAge(const AString & a_WorldName, Int64 a_Age) -{ - WorldAges::iterator itr = m_WorldAges.find(a_WorldName); - if (itr == m_WorldAges.end()) - { - ASSERT(!"Unknown world in cDeadlockDetect"); - return; - } - if (itr->second.m_Age == a_Age) - { - itr->second.m_NumCyclesSame += 1; - if (itr->second.m_NumCyclesSame > NUM_CYCLES_LIMIT) - { - DeadlockDetected(); - return; - } - } - else - { - itr->second.m_Age = a_Age; - itr->second.m_NumCyclesSame = 0; - } -} - - - - - -void cDeadlockDetect::DeadlockDetected(void) -{ - ASSERT(!"Deadlock detected"); - - // TODO: Make a crashdump / coredump - - // Crash the server intentionally: - *((volatile int *)0) = 0; -} - - - - -- cgit v1.2.3