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If compiled -DDEBUG_LOCKORDER and run with -debug, print out every mutex lock/unlock (helpful for debugging something-is-holding-a-mutex-too-long problems)

This commit is contained in:
Gavin Andresen 2011-09-02 12:01:42 -04:00
parent fb45259967
commit c591cc50eb
1 changed files with 20 additions and 6 deletions
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26
src/util.cpp
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@ -923,16 +923,22 @@ string FormatFullVersion()
struct CLockLocation struct CLockLocation
{ {
std::string mutexName;
std::string sourceFile;
int sourceLine;
CLockLocation(const char* pszName, const char* pszFile, int nLine) CLockLocation(const char* pszName, const char* pszFile, int nLine)
{ {
mutexName = pszName; mutexName = pszName;
sourceFile = pszFile; sourceFile = pszFile;
sourceLine = nLine; sourceLine = nLine;
} }
std::string ToString() const
{
return mutexName+" "+sourceFile+":"+itostr(sourceLine);
}
private:
std::string mutexName;
std::string sourceFile;
int sourceLine;
}; };
typedef std::vector< std::pair<CCriticalSection*, CLockLocation> > LockStack; typedef std::vector< std::pair<CCriticalSection*, CLockLocation> > LockStack;
@ -950,14 +956,14 @@ static void potential_deadlock_detected(const std::pair<CCriticalSection*, CCrit
{ {
if (i.first == mismatch.first) printf(" (1)"); if (i.first == mismatch.first) printf(" (1)");
if (i.first == mismatch.second) printf(" (2)"); if (i.first == mismatch.second) printf(" (2)");
printf(" %s %s:%d\n", i.second.mutexName.c_str(), i.second.sourceFile.c_str(), i.second.sourceLine); printf(" %s\n", i.second.ToString().c_str());
} }
printf("Current lock order is:\n"); printf("Current lock order is:\n");
BOOST_FOREACH(const PAIRTYPE(CCriticalSection*, CLockLocation)& i, s1) BOOST_FOREACH(const PAIRTYPE(CCriticalSection*, CLockLocation)& i, s1)
{ {
if (i.first == mismatch.first) printf(" (1)"); if (i.first == mismatch.first) printf(" (1)");
if (i.first == mismatch.second) printf(" (2)"); if (i.first == mismatch.second) printf(" (2)");
printf(" %s %s:%d\n", i.second.mutexName.c_str(), i.second.sourceFile.c_str(), i.second.sourceLine); printf(" %s\n", i.second.ToString().c_str());
} }
} }
@ -967,6 +973,7 @@ static void push_lock(CCriticalSection* c, const CLockLocation& locklocation)
if (lockstack.get() == NULL) if (lockstack.get() == NULL)
lockstack.reset(new LockStack); lockstack.reset(new LockStack);
if (fDebug) printf("Locking: %s\n", locklocation.ToString().c_str());
dd_mutex.lock(); dd_mutex.lock();
(*lockstack).push_back(std::make_pair(c, locklocation)); (*lockstack).push_back(std::make_pair(c, locklocation));
@ -992,7 +999,14 @@ static void push_lock(CCriticalSection* c, const CLockLocation& locklocation)
static void pop_lock() static void pop_lock()
{ {
if (fDebug)
{
const CLockLocation& locklocation = (*lockstack).rbegin()->second;
printf("Unlocked: %s\n", locklocation.ToString().c_str());
}
dd_mutex.lock();
(*lockstack).pop_back(); (*lockstack).pop_back();
dd_mutex.unlock();
} }
void CCriticalSection::Enter(const char* pszName, const char* pszFile, int nLine) void CCriticalSection::Enter(const char* pszName, const char* pszFile, int nLine)