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put back some comments

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Wenzel Jakob 2013-01-27 18:02:22 -05:00
parent 82255028d6
commit 58c61d2959
1 changed files with 6 additions and 4 deletions
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10
src/libcore/tls.cpp
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@ -133,22 +133,24 @@ struct ThreadLocalBase::ThreadLocalPrivate {
/// Look up a TLS entry. The goal is to make this operation very fast! /// Look up a TLS entry. The goal is to make this operation very fast!
std::pair<void *, bool> get() { std::pair<void *, bool> get() {
bool existed = true; bool existed = true;
void *data;
#if defined(__OSX__) #if defined(__OSX__)
PerThreadData *ptd = (PerThreadData *) pthread_getspecific(ptdLocal); PerThreadData *ptd = (PerThreadData *) pthread_getspecific(ptdLocal);
#else #else
PerThreadData *ptd = ptdLocal; PerThreadData *ptd = ptdLocal;
#endif #endif
if(EXPECT_NOT_TAKEN(!ptd)) { if (EXPECT_NOT_TAKEN(!ptd))
throw std::runtime_error("null per-thread data"); throw std::runtime_error("Internal error: call to ThreadLocalPrivate::get() "
} " precedes the construction of thread-specific data structures!");
void *data; /* This is an uncontended thread-local lock (i.e. not to worry) */
boost::lock_guard<boost::recursive_mutex> guard(ptd->mutex); boost::lock_guard<boost::recursive_mutex> guard(ptd->mutex);
PerThreadData::key_iterator it = ptd->map.find(this); PerThreadData::key_iterator it = ptd->map.find(this);
if (EXPECT_TAKEN(it != ptd->map.end())) { if (EXPECT_TAKEN(it != ptd->map.end())) {
data = it->second.data; data = it->second.data;
} else { } else {
/* This is the first access from this thread */
TLSEntry entry; TLSEntry entry;
entry.data = data = constructFunctor(); entry.data = data = constructFunctor();
entry.destructFunctor = destructFunctor; entry.destructFunctor = destructFunctor;