LineageOS/android_external_libcxx
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Refactor pthread usage of libcxx.

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This patch extracts out all the pthread dependencies of libcxx into the
new header __threading_support. The motivation is to make it easy to
re-target libcxx into platforms that do not support pthread.

Original patch from Fulvio Esposito (fulvio.esposito@outlook.com) - D11781

Applied with tweaks - D19412

Change-Id: I301111f0075de93dd8129416e06babc195aa936b

git-svn-id: https://llvm.org/svn/llvm-project/libcxx/trunk@268734 91177308-0d34-0410-b5e6-96231b3b80d8
This commit is contained in:
Asiri Rathnayake
2016-05-06 14:06:29 +00:00
parent 6637dc23f6
commit 35ff03b7c2
10 changed files with 299 additions and 105 deletions
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10
src/condition_variable.cpp
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@@ -20,19 +20,19 @@ _LIBCPP_BEGIN_NAMESPACE_STD
condition_variable::~condition_variable()
{
pthread_cond_destroy(&__cv_);
__libcpp_condvar_destroy(&__cv_);
}
void
condition_variable::notify_one() _NOEXCEPT
{
pthread_cond_signal(&__cv_);
__libcpp_condvar_signal(&__cv_);
}
void
condition_variable::notify_all() _NOEXCEPT
{
pthread_cond_broadcast(&__cv_);
__libcpp_condvar_broadcast(&__cv_);
}
void
@@ -41,7 +41,7 @@ condition_variable::wait(unique_lock<mutex>& lk) _NOEXCEPT
if (!lk.owns_lock())
__throw_system_error(EPERM,
"condition_variable::wait: mutex not locked");
int ec = pthread_cond_wait(&__cv_, lk.mutex()->native_handle());
int ec = __libcpp_condvar_wait(&__cv_, lk.mutex()->native_handle());
if (ec)
__throw_system_error(ec, "condition_variable wait failed");
}
@@ -71,7 +71,7 @@ condition_variable::__do_timed_wait(unique_lock<mutex>& lk,
ts.tv_sec = ts_sec_max;
ts.tv_nsec = giga::num - 1;
}
int ec = pthread_cond_timedwait(&__cv_, lk.mutex()->native_handle(), &ts);
int ec = __libcpp_condvar_timedwait(&__cv_, lk.mutex()->native_handle(), &ts);
if (ec != 0 && ec != ETIMEDOUT)
__throw_system_error(ec, "condition_variable timed_wait failed");
}