folly::fibers::CacheManager Class Reference

Public Member Functions
std::unique_ptr< StackCacheEntry >	getStackCache (size_t stackSize)

Static Public Member Functions
static CacheManager &	instance ()

Private Member Functions
void	giveBack (std::unique_ptr< StackCache >)

Private Attributes
folly::SpinLock	lock_
size_t	inUse_ {0}

Friends
class	StackCacheEntry

Detailed Description

Definition at line 236 of file GuardPageAllocator.cpp.

Member Function Documentation

std::unique_ptr<StackCacheEntry> folly::fibers::CacheManager::getStackCache ( size_t  stackSize )

inline

Definition at line 243 of file GuardPageAllocator.cpp.

References folly::fibers::StackCache::lock_.

Referenced by folly::fibers::GuardPageAllocator::allocate().

                                                                 {
    std::lock_guard<folly::SpinLock> lg(lock_);
    if (inUse_ < kMaxInUse) {
      ++inUse_;
      return std::make_unique<StackCacheEntry>(stackSize);
    }

    return nullptr;
  }

void folly::fibers::CacheManager::giveBack ( std::unique_ptr< StackCache >  )

inlineprivate

Definition at line 259 of file GuardPageAllocator.cpp.

Referenced by folly::fibers::StackCacheEntry::~StackCacheEntry().

                                             {
    assert(inUse_ > 0);
    --inUse_;
    /* Note: we can add a free list for each size bucket
       if stack re-use is important.
       In this case this needs to be a folly::Singleton
       to make sure the free list is cleaned up on fork.

       TODO(t7351705): fix Singleton destruction order
    */
  }

static CacheManager& folly::fibers::CacheManager::instance ( )

inlinestatic

Definition at line 238 of file GuardPageAllocator.cpp.

Referenced by folly::fibers::GuardPageAllocator::allocate(), and folly::fibers::StackCacheEntry::~StackCacheEntry().

                                  {
    static auto inst = new CacheManager();
    return *inst;
  }

Friends And Related Function Documentation

friend class StackCacheEntry

friend

Definition at line 257 of file GuardPageAllocator.cpp.

Member Data Documentation

size_t folly::fibers::CacheManager::inUse_ {0}

private

Definition at line 255 of file GuardPageAllocator.cpp.

folly::SpinLock folly::fibers::CacheManager::lock_

private

Definition at line 254 of file GuardPageAllocator.cpp.

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The documentation for this class was generated from the following file:

• proxygen/folly/folly/fibers/GuardPageAllocator.cpp