void CacheEntry::PurgeAndDoom()
{
LOG(("CacheEntry::PurgeAndDoom [this=%p]", this));
CacheStorageService::Self()->RemoveEntry(this);
DoomAlreadyRemoved();
}
void CacheEntry::BackgroundOp(uint32_t aOperations, bool aForceAsync)
{
mLock.AssertCurrentThreadOwns();
if (!CacheStorageService::IsOnManagementThread() || aForceAsync) {
if (mBackgroundOperations.Set(aOperations))
CacheStorageService::Self()->Dispatch(this);
LOG(("CacheEntry::BackgroundOp this=%p dipatch of %x", this, aOperations));
return;
}
mozilla::MutexAutoUnlock unlock(mLock);
MOZ_ASSERT(CacheStorageService::IsOnManagementThread());
if (aOperations & Ops::FRECENCYUPDATE) {
#ifndef M_LN2
#define M_LN2 0.69314718055994530942
#endif
// Half-life is 90 days.
static double const half_life = 90.0 * (24 * 60 * 60);
// Must convert from seconds to milliseconds since PR_Now() gives usecs.
static double const decay = (M_LN2 / half_life) / static_cast<double>(PR_USEC_PER_SEC);
double now_decay = static_cast<double>(PR_Now()) * decay;
if (mFrecency == 0) {
mFrecency = now_decay;
}
else {
// TODO: when C++11 enabled, use std::log1p(n) which is equal to log(n + 1) but
// more precise.
mFrecency = log(exp(mFrecency - now_decay) + 1) + now_decay;
}
LOG(("CacheEntry FRECENCYUPDATE [this=%p, frecency=%1.10f]", this, mFrecency));
}
if (aOperations & Ops::REGISTER) {
LOG(("CacheEntry REGISTER [this=%p]", this));
CacheStorageService::Self()->RegisterEntry(this);
}
if (aOperations & Ops::DOOM) {
LOG(("CacheEntry DOOM [this=%p]", this));
DoomAlreadyRemoved();
}
if (aOperations & Ops::CALLBACKS) {
LOG(("CacheEntry CALLBACKS (invoke) [this=%p]", this));
mozilla::MutexAutoLock lock(mLock);
InvokeCallbacks();
}
}
void CacheEntry::PurgeAndDoom()
{
LOG(("CacheEntry::PurgeAndDoom [this=%p]", this));
MOZ_ASSERT(CacheStorageService::IsOnManagementThread());
CacheStorageService::Self()->RemoveEntry(this);
DoomAlreadyRemoved();
}
void CacheEntry::BackgroundOp(uint32_t aOperations, bool aForceAsync)
{
mLock.AssertCurrentThreadOwns();
if (!CacheStorageService::IsOnManagementThread() || aForceAsync) {
if (mBackgroundOperations.Set(aOperations))
CacheStorageService::Self()->Dispatch(this);
LOG(("CacheEntry::BackgroundOp this=%p dipatch of %x", this, aOperations));
return;
}
mozilla::MutexAutoUnlock unlock(mLock);
MOZ_ASSERT(CacheStorageService::IsOnManagementThread());
if (aOperations & Ops::FRECENCYUPDATE) {
#ifndef M_LN2
#define M_LN2 0.69314718055994530942
#endif
// Half-life is dynamic, in seconds.
static double half_life = CacheObserver::HalfLifeSeconds();
// Must convert from seconds to milliseconds since PR_Now() gives usecs.
static double const decay = (M_LN2 / half_life) / static_cast<double>(PR_USEC_PER_SEC);
double now_decay = static_cast<double>(PR_Now()) * decay;
if (mFrecency == 0) {
mFrecency = now_decay;
}
else {
// TODO: when C++11 enabled, use std::log1p(n) which is equal to log(n + 1) but
// more precise.
mFrecency = log(exp(mFrecency - now_decay) + 1) + now_decay;
}
LOG(("CacheEntry FRECENCYUPDATE [this=%p, frecency=%1.10f]", this, mFrecency));
// Because CacheFile::Set*() are not thread-safe to use (uses WeakReference that
// is not thread-safe) we must post to the main thread...
nsRefPtr<nsRunnableMethod<CacheEntry> > event =
NS_NewRunnableMethod(this, &CacheEntry::StoreFrecency);
NS_DispatchToMainThread(event);
}
if (aOperations & Ops::REGISTER) {
LOG(("CacheEntry REGISTER [this=%p]", this));
CacheStorageService::Self()->RegisterEntry(this);
}
if (aOperations & Ops::DOOM) {
LOG(("CacheEntry DOOM [this=%p]", this));
DoomAlreadyRemoved();
}
if (aOperations & Ops::CALLBACKS) {
LOG(("CacheEntry CALLBACKS (invoke) [this=%p]", this));
mozilla::MutexAutoLock lock(mLock);
InvokeCallbacks();
}
}
