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[futures.task] and [futures.async]. Requires variadics and rvalue-ref support.

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git-svn-id: https://llvm.org/svn/llvm-project/libcxx/trunk@112500 91177308-0d34-0410-b5e6-96231b3b80d8
This commit is contained in:
Howard Hinnant
2010-08-30 18:46:21 +00:00
parent 7158e5c38b
commit 54da338f59
21 changed files with 1834 additions and 25 deletions
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35
src/future.cpp
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@@ -124,18 +124,39 @@ void
__assoc_sub_state::copy()
{
unique_lock<mutex> __lk(__mut_);
while (!__is_ready())
__cv_.wait(__lk);
__sub_wait(__lk);
if (__exception_ != nullptr)
rethrow_exception(__exception_);
}
void
__assoc_sub_state::wait() const
__assoc_sub_state::wait()
{
unique_lock<mutex> __lk(__mut_);
while (!__is_ready())
__cv_.wait(__lk);
__sub_wait(__lk);
}
void
__assoc_sub_state::__sub_wait(unique_lock<mutex>& __lk)
{
if (!__is_ready())
{
if (__state_ & deferred)
{
__state_ &= ~deferred;
__lk.unlock();
__execute();
}
else
while (!__is_ready())
__cv_.wait(__lk);
}
}
void
__assoc_sub_state::__execute()
{
throw future_error(make_error_code(future_errc::no_state));
}
future<void>::future(__assoc_sub_state* __state)
@@ -144,6 +165,7 @@ future<void>::future(__assoc_sub_state* __state)
if (__state_->__has_future_attached())
throw future_error(make_error_code(future_errc::future_already_retrieved));
__state_->__add_shared();
__state_->__set_future_attached();
}
future<void>::~future()
@@ -155,9 +177,10 @@ future<void>::~future()
void
future<void>::get()
{
unique_ptr<__shared_count, __release_shared_count> __(__state_);
__assoc_sub_state* __s = __state_;
__state_ = nullptr;
return __s->copy();
__s->copy();
}
promise<void>::promise()