feedc0de/boost_smart_ptr
1
0
Fork 0
forked from boostorg/smart_ptr
Code Pull Requests Activity

Use BOOST_SMT_PAUSE starting from the first iteration

Browse Source
This commit is contained in:
Peter Dimov
2020-06-06 16:54:57 +03:00
parent d38f64ded9
commit f8dcf5f6f4
1 changed files with 6 additions and 12 deletions
Download Patch File Download Diff File Expand all files Collapse all files

18
include/boost/smart_ptr/detail/yield_k.hpp
View File

@@ -74,15 +74,12 @@ namespace detail
inline void yield( unsigned k ) BOOST_NOEXCEPT inline void yield( unsigned k ) BOOST_NOEXCEPT
{ {
if( k < 4 ) if( k < 16 )
{ {
}
#if defined( BOOST_SMT_PAUSE ) #if defined( BOOST_SMT_PAUSE )
else if( k < 16 )
{
BOOST_SMT_PAUSE BOOST_SMT_PAUSE
}
#endif #endif
}
else if( k < 32 ) else if( k < 32 )
{ {
Sleep( 0 ); Sleep( 0 );
@@ -102,8 +99,8 @@ inline void yield( unsigned k ) BOOST_NOEXCEPT
#ifndef _AIX #ifndef _AIX
#include <sched.h> #include <sched.h>
#else #else
// AIX's sched.h defines ::var which sometimes conflicts with Lambda's var // AIX's sched.h defines ::var which sometimes conflicts with Lambda's var
extern "C" int sched_yield(void); extern "C" int sched_yield(void);
#endif #endif
#include <time.h> #include <time.h>
@@ -116,15 +113,12 @@ namespace detail
inline void yield( unsigned k ) inline void yield( unsigned k )
{ {
if( k < 4 ) if( k < 16 )
{ {
}
#if defined( BOOST_SMT_PAUSE ) #if defined( BOOST_SMT_PAUSE )
else if( k < 16 )
{
BOOST_SMT_PAUSE BOOST_SMT_PAUSE
}
#endif #endif
}
else if( k < 32 || k & 1 ) else if( k < 32 || k & 1 )
{ {
sched_yield(); sched_yield();