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/*
Copyright 1999-2010 ImageMagick Studio LLC, a non-profit organization
dedicated to making software imaging solutions freely available.
You may not use this file except in compliance with the License.
obtain a copy of the License at
http://www.imagemagick.org/script/license.php
Unless required by applicable law or agreed to in writing, software
distributed under the License is distributed on an "AS IS" BASIS,
WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
See the License for the specific language governing permissions and
limitations under the License.
MagickCore private methods for internal threading.
*/
#ifndef _MAGICKCORE_THREAD_PRIVATE_H
#define _MAGICKCORE_THREAD_PRIVATE_H
#if defined(__cplusplus) || defined(c_plusplus)
extern "C" {
#endif
#include <magick/thread_.h>
#if (__GNUC__ > 3) || ((__GNUC__ == 3) && (__GNUC_MINOR > 10))
#define MagickCachePrefetch(address,mode,locality) \
__builtin_prefetch(address,mode,locality)
#else
#define MagickCachePrefetch(address,mode,locality)
#endif
#if defined(MAGICKCORE_HAVE_PTHREAD)
typedef pthread_mutex_t MagickMutexType;
#elif defined(__WINDOWS__)
typedef CRITICAL_SECTION MagickMutexType;
#else
typedef unsigned long MagickMutexType;
#endif
static inline MagickThreadType GetMagickThreadId(void)
{
#if defined(MAGICKCORE_HAVE_PTHREAD)
return(pthread_self());
#elif defined(__WINDOWS__)
return(GetCurrentThreadId());
#else
return(getpid());
#endif
}
static inline unsigned long GetMagickThreadSignature(void)
{
#if defined(MAGICKCORE_HAVE_PTHREAD)
{
union
{
pthread_t
id;
unsigned long
signature;
} magick_thread;
magick_thread.signature=0UL;
magick_thread.id=pthread_self();
return(magick_thread.signature);
}
#elif defined(__WINDOWS__)
return((unsigned long) GetCurrentThreadId());
#else
return((unsigned long) getpid());
#endif
}
static inline MagickBooleanType IsMagickThreadEqual(const MagickThreadType id)
{
#if defined(MAGICKCORE_HAVE_PTHREAD)
if (pthread_equal(id,pthread_self()) != 0)
return(MagickTrue);
#elif defined(__WINDOWS__)
if (id == GetCurrentThreadId())
return(MagickTrue);
#else
if (id == getpid())
return(MagickTrue);
#endif
return(MagickFalse);
}
/*
Lightweight OpenMP methods.
*/
static inline unsigned long GetOpenMPMaximumThreads(void)
{
#if defined(MAGICKCORE_OPENMP_SUPPORT) && (_OPENMP >= 200203)
{
static unsigned long
maximum_threads = 1UL;
if (omp_get_max_threads() > (long) maximum_threads)
maximum_threads=omp_get_max_threads();
return(maximum_threads);
}
#endif
return(1UL);
}
static inline long GetOpenMPThreadId(void)
{
#if defined(MAGICKCORE_OPENMP_SUPPORT) && (_OPENMP >= 200203)
return(omp_get_thread_num());
#else
return(0);
#endif
}
static inline void SetOpenMPMaximumThreads(const unsigned long threads)
{
#if defined(MAGICKCORE_OPENMP_SUPPORT) && (_OPENMP >= 200203)
omp_set_num_threads(threads);
#else
(void) threads;
#endif
}
static inline void SetOpenMPNested(const int value)
{
#if defined(MAGICKCORE_OPENMP_SUPPORT) && (_OPENMP >= 200203)
omp_set_nested(value);
#else
(void) value;
#endif
}
#if defined(__cplusplus) || defined(c_plusplus)
}
#endif
#endif
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