mirror of git://gcc.gnu.org/git/gcc.git
61 lines
990 B
C
61 lines
990 B
C
// { dg-do run }
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// { dg-require-effective-target tls_runtime }
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#include <omp.h>
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#include <assert.h>
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#define N 10
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#define THR 4
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struct B
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{
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B& operator=(const B &);
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};
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static B *base;
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static B *threadbase;
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static int singlethread;
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#pragma omp threadprivate(threadbase)
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static unsigned cmask[THR];
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B& B::operator= (const B &b)
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{
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unsigned sindex = &b - base;
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unsigned tindex = this - threadbase;
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assert(sindex < N);
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assert(sindex == tindex);
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cmask[omp_get_thread_num ()] |= 1u << tindex;
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return *this;
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}
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void foo()
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{
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#pragma omp parallel
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{
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B b[N];
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threadbase = b;
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#pragma omp single copyprivate(b)
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{
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assert(omp_get_num_threads () == THR);
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singlethread = omp_get_thread_num ();
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base = b;
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}
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}
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}
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int main()
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{
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omp_set_dynamic (0);
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omp_set_num_threads (THR);
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foo();
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for (int i = 0; i < THR; ++i)
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if (i == singlethread)
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assert(cmask[singlethread] == 0);
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else
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assert(cmask[i] == (1u << N) - 1);
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return 0;
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}
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