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#pragma once
#ifndef _OPENMP
#ifndef SINGLE_THREAD
#define SINGLE_THREAD
#endif
#endif
#ifndef SINGLE_THREAD
#include <omp.h>
#endif
extern size_t threshold;
namespace parallel {
extern size_t lastThreads;
inline size_t get_thread_num()
{
#ifdef SINGLE_THREAD
return 0;
#else
return omp_get_thread_num();
#endif
}
inline size_t get_thread_num(size_t threads) {
return threads > 1 ? get_thread_num() : 0;
}
inline size_t get_max_threads()
{
#ifdef SINGLE_THREAD
return 1;
#else
return omp_get_max_threads();
#endif
}
}
#ifndef SINGLE_THREAD
#define PARALLEL(code) \
if(threads > 1) { \
_Pragma("omp parallel for num_threads(threads)") \
code \
} else {code}
#else
#define PARALLEL(code) {code}
#endif
#ifndef SINGLE_THREAD
#define OMPIF(condition,directive,code) \
if(threads > 1 && condition) { \
_Pragma(directive) \
code \
} else {code}
#else
#define OMPIF(condition,directive,code) {code}
#endif
#define PARALLELIF(condition,code) \
OMPIF(condition,"omp parallel for num_threads(threads)",code)
namespace parallel {
void Threshold(size_t threads);
}
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