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use thread_specific_ptr

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This commit is contained in:
Oliver Kowalke
2014-11-20 18:36:09 +01:00
parent 4071e72299
commit 4cc6e72fae
1 changed files with 3 additions and 98 deletions
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101
include/boost/fiber/posix/thread_local_ptr.hpp
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@@ -7,11 +7,9 @@
#ifndef BOOST_FIBERS_THREAD_LOCAL_PTR_H
#define BOOST_FIBERS_THREAD_LOCAL_PTR_H
#include <pthread.h> // pthread_key_create, pthread_[gs]etspecific
#include <boost/config.hpp>
#include <boost/utility.hpp>
#include <boost/utility/explicit_operator_bool.hpp>
#include <boost/thread/thread.hpp>
#include <boost/fiber/detail/config.hpp>
@@ -22,102 +20,9 @@
namespace boost {
namespace fibers {
# if ! (defined(__APPLE__) && defined(BOOST_HAS_PTHREADS))
template< typename T >
class thread_local_ptr : private noncopyable
{
private:
static void cleanup_function( void * vp)
{
thread_local_ptr< T > * p = static_cast< thread_local_ptr< T > * >( vp);
BOOST_ASSERT( 0 != p);
delete p->t_;
p->t_ = 0;
}
static __thread T * t_;
pthread_key_t key_;
public:
thread_local_ptr() BOOST_NOEXCEPT :
key_()
{ ::pthread_key_create( & key_, & thread_local_ptr::cleanup_function); }
~thread_local_ptr()
{ if ( 0 != t_) cleanup_function( t_); } // required for single-threaded apps
BOOST_EXPLICIT_OPERATOR_BOOL();
T * get() const BOOST_NOEXCEPT
{ return t_; }
bool operator!() const BOOST_NOEXCEPT
{ return ! get(); }
bool operator==( thread_local_ptr const& other) BOOST_NOEXCEPT
{ return this->get() == other.get(); }
bool operator!=( thread_local_ptr const& other) BOOST_NOEXCEPT
{ return ! ( * this == other); }
void reset( T * t) BOOST_NOEXCEPT
{
t_ = t;
::pthread_setspecific( key_, this);
}
};
template< typename T >
__thread T * thread_local_ptr< T >::t_ = 0;
# else
template< typename T >
class thread_local_ptr : private noncopyable
{
private:
static void cleanup_function( void * vp)
{
thread_local_ptr< T > * p = static_cast< thread_local_ptr< T > * >( vp);
BOOST_ASSERT( 0 != p);
T * t = static_cast< T * >( ::pthread_getspecific( p->t_key_) );
delete t;
::pthread_setspecific( p->t_key_, 0);
}
pthread_key_t this_key_;
pthread_key_t t_key_;
public:
thread_local_ptr() BOOST_NOEXCEPT :
this_key_(), t_key_()
{
::pthread_key_create( & this_key_, & thread_local_ptr::cleanup_function);
::pthread_key_create( & t_key_, 0);
}
~thread_local_ptr()
{ if ( 0 != t_) cleanup_function( t_); } // required for single-threaded apps
BOOST_EXPLICIT_OPERATOR_BOOL();
T * get() const BOOST_NOEXCEPT
{ return static_cast< T * >( ::pthread_getspecific( t_key_) ); }
bool operator!() const BOOST_NOEXCEPT
{ return ! get(); }
bool operator==( thread_local_ptr const& other) BOOST_NOEXCEPT
{ return this->get() == other.get(); }
bool operator!=( thread_local_ptr const& other) BOOST_NOEXCEPT
{ return ! ( * this == other); }
void reset( T * t) BOOST_NOEXCEPT
{
::pthread_setspecific( this_key_, this);
::pthread_setspecific( t_key_, t);
}
};
# endif
struct thread_local_ptr : public boost::thread_specific_ptr< T >
{};
}}