folly::fibers::FiberImpl Class Reference

#include <BoostContextCompatibility.h>

Public Member Functions
	FiberImpl (folly::Function< void()> func, unsigned char *stackLimit, size_t stackSize)
void	activate ()
void	deactivate ()

Private Types
using	FiberContext = boost::ctx::fcontext_t
using	MainContext = boost::ctx::fcontext_t

Static Private Member Functions
static void	fiberFunc (intptr_t arg)

Private Attributes
folly::Function< void()>	func_
FiberContext	fiberContext_
MainContext	mainContext_

Detailed Description

Definition at line 44 of file BoostContextCompatibility.h.

Member Typedef Documentation

using folly::fibers::FiberImpl::FiberContext = boost::ctx::fcontext_t

private

Definition at line 52 of file BoostContextCompatibility.h.

using folly::fibers::FiberImpl::MainContext = boost::ctx::fcontext_t

private

Definition at line 62 of file BoostContextCompatibility.h.

Constructor & Destructor Documentation

folly::fibers::FiberImpl::FiberImpl ( folly::Function< void()>  func, unsigned char *  stackLimit, size_t  stackSize  )

inline

Definition at line 66 of file BoostContextCompatibility.h.

References fiberContext_, and fiberFunc().

      : func_(std::move(func)) {
    auto stackBase = stackLimit + stackSize;
#if BOOST_VERSION >= 106100
    stackBase_ = stackBase;
    fiberContext_ =
        boost::context::detail::make_fcontext(stackBase, stackSize, &fiberFunc);
#elif BOOST_VERSION >= 105200
    fiberContext_ =
        boost::context::make_fcontext(stackBase, stackSize, &fiberFunc);
#else
    fiberContext_.fc_stack.limit = stackLimit;
    fiberContext_.fc_stack.base = stackBase;
    make_fcontext(&fiberContext_, &fiberFunc);
#endif
  }

Member Function Documentation

void folly::fibers::FiberImpl::activate ( )

inline

Definition at line 86 of file BoostContextCompatibility.h.

References context, fiberContext_, and mainContext_.

Referenced by folly::fibers::FiberManager::activateFiber().

                  {
#if BOOST_VERSION >= 106100
    auto transfer = boost::context::detail::jump_fcontext(fiberContext_, this);
    fiberContext_ = transfer.fctx;
    auto context = reinterpret_cast<intptr_t>(transfer.data);
#elif BOOST_VERSION >= 105200
    auto context = boost::context::jump_fcontext(
        &mainContext_, fiberContext_, reinterpret_cast<intptr_t>(this));
#else
    auto context = jump_fcontext(
        &mainContext_, &fiberContext_, reinterpret_cast<intptr_t>(this));
#endif
    DCHECK_EQ(0, context);
  }

void folly::fibers::FiberImpl::deactivate ( )

inline

Definition at line 101 of file BoostContextCompatibility.h.

References context, fiberContext_, fiberFunc(), folly::kIsArchAmd64, folly::kIsLinux, and mainContext_.

Referenced by folly::fibers::FiberManager::deactivateFiber().

                    {
#if BOOST_VERSION >= 106100
    auto transfer =
        boost::context::detail::jump_fcontext(mainContext_, nullptr);
    mainContext_ = transfer.fctx;
    fixStackUnwinding();
    auto context = reinterpret_cast<intptr_t>(transfer.data);
#elif BOOST_VERSION >= 105600
    auto context =
        boost::context::jump_fcontext(&fiberContext_, mainContext_, 0);
#elif BOOST_VERSION >= 105200
    auto context =
        boost::context::jump_fcontext(fiberContext_, &mainContext_, 0);
#else
    auto context = jump_fcontext(&fiberContext_, &mainContext_, 0);
#endif
    DCHECK_EQ(this, reinterpret_cast<FiberImpl*>(context));
  }

static void folly::fibers::FiberImpl::fiberFunc ( intptr_t  arg )

inlinestaticprivate

Definition at line 142 of file BoostContextCompatibility.h.

References func_.

Referenced by deactivate(), and FiberImpl().

                                      {
    auto fiberImpl = reinterpret_cast<FiberImpl*>(arg);
    fiberImpl->func_();
  }

Member Data Documentation

FiberContext folly::fibers::FiberImpl::fiberContext_

private

Definition at line 149 of file BoostContextCompatibility.h.

Referenced by activate(), deactivate(), and FiberImpl().

folly::Function<void()> folly::fibers::FiberImpl::func_

private

Definition at line 148 of file BoostContextCompatibility.h.

Referenced by fiberFunc().

MainContext folly::fibers::FiberImpl::mainContext_

private

Definition at line 150 of file BoostContextCompatibility.h.

Referenced by activate(), and deactivate().

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

• proxygen/folly/folly/fibers/BoostContextCompatibility.h