mirror of
https://github.com/boostorg/thread.git
synced 2026-01-26 19:12:11 +00:00
61 lines
1.3 KiB
C++
61 lines
1.3 KiB
C++
// (C) Copyright Mac Murrett 2001.
|
|
// Use, modification and distribution are subject to the
|
|
// Boost Software License, Version 1.0. (See accompanying file
|
|
// LICENSE_1_0.txt or copy at http://www.boost.org/LICENSE_1_0.txt)
|
|
|
|
// See http://www.boost.org for most recent version.
|
|
|
|
#include <Debugging.h>
|
|
#include <Multiprocessing.h>
|
|
|
|
#include "execution_context.hpp"
|
|
#include "init.hpp"
|
|
|
|
|
|
namespace boost {
|
|
|
|
namespace threads {
|
|
|
|
namespace mac {
|
|
|
|
|
|
execution_context_t execution_context()
|
|
{
|
|
// make sure that MP services are available the first time through
|
|
static bool bIgnored = detail::thread_init();
|
|
|
|
// first check if we're an MP task
|
|
if(MPTaskIsPreemptive(kInvalidID))
|
|
{
|
|
return(k_eExecutionContextMPTask);
|
|
}
|
|
|
|
#if TARGET_CARBON
|
|
// Carbon has TaskLevel
|
|
UInt32 ulLevel = TaskLevel();
|
|
|
|
if(ulLevel == 0UL)
|
|
{
|
|
return(k_eExecutionContextSystemTask);
|
|
}
|
|
|
|
if(ulLevel & kInDeferredTaskMask)
|
|
{
|
|
return(k_eExecutionContextDeferredTask);
|
|
}
|
|
|
|
return(k_eExecutionContextOther);
|
|
#else
|
|
// this can be implemented using TaskLevel if you don't mind linking against
|
|
// DebugLib (and therefore breaking Mac OS 8.6 support), or CurrentExecutionLevel.
|
|
# error execution_context unimplimented
|
|
#endif
|
|
}
|
|
|
|
|
|
} // namespace mac
|
|
|
|
} // namespace threads
|
|
|
|
} // namespace boost
|