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Add DEBUG_LOCKCONTENTION, to warn each time a thread waits to lock.

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If compiled with -DDEBUG_LOCKCONTENTION, Bitcoin will print to
debug.log each time a thread has to wait for a lock to continue.
This commit is contained in:
Matt Corallo 2012-01-07 12:12:39 -05:00
parent 1240a1b0a8
commit 198fb229a4
1 changed files with 22 additions and 1 deletions
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23
src/util.cpp
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@ -1153,7 +1153,18 @@ static void pop_lock()
void CCriticalSection::Enter(const char* pszName, const char* pszFile, int nLine) void CCriticalSection::Enter(const char* pszName, const char* pszFile, int nLine)
{ {
push_lock(this, CLockLocation(pszName, pszFile, nLine)); push_lock(this, CLockLocation(pszName, pszFile, nLine));
#ifdef DEBUG_LOCKCONTENTION
bool result = mutex.try_lock();
if (!result)
{
printf("LOCKCONTENTION: %s\n", pszName);
printf("Locker: %s:%d\n", pszFile, nLine);
mutex.lock(); mutex.lock();
printf("Locked\n");
}
#else
mutex.lock();
#endif
} }
void CCriticalSection::Leave() void CCriticalSection::Leave()
{ {
@ -1170,10 +1181,20 @@ bool CCriticalSection::TryEnter(const char* pszName, const char* pszFile, int nL
#else #else
void CCriticalSection::Enter(const char*, const char*, int) void CCriticalSection::Enter(const char* pszName, const char* pszFile, int nLine)
{ {
#ifdef DEBUG_LOCKCONTENTION
bool result = mutex.try_lock();
if (!result)
{
printf("LOCKCONTENTION: %s\n", pszName);
printf("Locker: %s:%d\n", pszFile, nLine);
mutex.lock(); mutex.lock();
} }
#else
mutex.lock();
#endif
}
void CCriticalSection::Leave() void CCriticalSection::Leave()
{ {