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authorjoerg <joerg@NetBSD.org>2015-08-20 09:31:47 +0000
committerjoerg <joerg@NetBSD.org>2015-08-20 09:31:47 +0000
commitb2e8b4bcac1662c35cd7d38149be011d22d4fa3a (patch)
treee940ceb6c9e0446048768f5637a659d3ff0c74ba /external/bsd/libc++/dist/libcxx/src/shared_mutex.cpp
parentb8c252c8fd23d42032d89f7d220628592ca94935 (diff)
Import libc++ r245547. Various bugfixes, improvements to the C++14
support and some experimental features from the library standard track.
Diffstat (limited to 'external/bsd/libc++/dist/libcxx/src/shared_mutex.cpp')
-rw-r--r--external/bsd/libc++/dist/libcxx/src/shared_mutex.cpp30
1 files changed, 23 insertions, 7 deletions
diff --git a/external/bsd/libc++/dist/libcxx/src/shared_mutex.cpp b/external/bsd/libc++/dist/libcxx/src/shared_mutex.cpp
index dd78a1647fe..874aceb1b03 100644
--- a/external/bsd/libc++/dist/libcxx/src/shared_mutex.cpp
+++ b/external/bsd/libc++/dist/libcxx/src/shared_mutex.cpp
@@ -7,12 +7,16 @@
//
//===----------------------------------------------------------------------===//
+#include "__config"
+#ifndef _LIBCPP_HAS_NO_THREADS
+
#define _LIBCPP_BUILDING_SHARED_MUTEX
#include "shared_mutex"
_LIBCPP_BEGIN_NAMESPACE_STD
-shared_timed_mutex::shared_timed_mutex()
+// Shared Mutex Base
+__shared_mutex_base::__shared_mutex_base()
: __state_(0)
{
}
@@ -20,7 +24,7 @@ shared_timed_mutex::shared_timed_mutex()
// Exclusive ownership
void
-shared_timed_mutex::lock()
+__shared_mutex_base::lock()
{
unique_lock<mutex> lk(__mut_);
while (__state_ & __write_entered_)
@@ -31,7 +35,7 @@ shared_timed_mutex::lock()
}
bool
-shared_timed_mutex::try_lock()
+__shared_mutex_base::try_lock()
{
unique_lock<mutex> lk(__mut_);
if (__state_ == 0)
@@ -43,7 +47,7 @@ shared_timed_mutex::try_lock()
}
void
-shared_timed_mutex::unlock()
+__shared_mutex_base::unlock()
{
lock_guard<mutex> _(__mut_);
__state_ = 0;
@@ -53,7 +57,7 @@ shared_timed_mutex::unlock()
// Shared ownership
void
-shared_timed_mutex::lock_shared()
+__shared_mutex_base::lock_shared()
{
unique_lock<mutex> lk(__mut_);
while ((__state_ & __write_entered_) || (__state_ & __n_readers_) == __n_readers_)
@@ -64,7 +68,7 @@ shared_timed_mutex::lock_shared()
}
bool
-shared_timed_mutex::try_lock_shared()
+__shared_mutex_base::try_lock_shared()
{
unique_lock<mutex> lk(__mut_);
unsigned num_readers = __state_ & __n_readers_;
@@ -79,7 +83,7 @@ shared_timed_mutex::try_lock_shared()
}
void
-shared_timed_mutex::unlock_shared()
+__shared_mutex_base::unlock_shared()
{
lock_guard<mutex> _(__mut_);
unsigned num_readers = (__state_ & __n_readers_) - 1;
@@ -98,4 +102,16 @@ shared_timed_mutex::unlock_shared()
}
+// Shared Timed Mutex
+// These routines are here for ABI stability
+shared_timed_mutex::shared_timed_mutex() : __base() {}
+void shared_timed_mutex::lock() { return __base.lock(); }
+bool shared_timed_mutex::try_lock() { return __base.try_lock(); }
+void shared_timed_mutex::unlock() { return __base.unlock(); }
+void shared_timed_mutex::lock_shared() { return __base.lock_shared(); }
+bool shared_timed_mutex::try_lock_shared() { return __base.try_lock_shared(); }
+void shared_timed_mutex::unlock_shared() { return __base.unlock_shared(); }
+
_LIBCPP_END_NAMESPACE_STD
+
+#endif // !_LIBCPP_HAS_NO_THREADS