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Diffstat (limited to 'gcc-4.4.3/libgomp/testsuite/libgomp.fortran/appendix-a/a.18.1.f90')
| -rw-r--r-- | gcc-4.4.3/libgomp/testsuite/libgomp.fortran/appendix-a/a.18.1.f90 | 59 |
1 files changed, 59 insertions, 0 deletions
diff --git a/gcc-4.4.3/libgomp/testsuite/libgomp.fortran/appendix-a/a.18.1.f90 b/gcc-4.4.3/libgomp/testsuite/libgomp.fortran/appendix-a/a.18.1.f90 new file mode 100644 index 000000000..3321485ef --- /dev/null +++ b/gcc-4.4.3/libgomp/testsuite/libgomp.fortran/appendix-a/a.18.1.f90 @@ -0,0 +1,59 @@ +! { dg-do run } +! { dg-options "-ffixed-form" } + REAL FUNCTION FN1(I) + INTEGER I + FN1 = I * 2.0 + RETURN + END FUNCTION FN1 + + REAL FUNCTION FN2(A, B) + REAL A, B + FN2 = A + B + RETURN + END FUNCTION FN2 + + PROGRAM A18 + INCLUDE "omp_lib.h" ! or USE OMP_LIB + INTEGER ISYNC(256) + REAL WORK(256) + REAL RESULT(256) + INTEGER IAM, NEIGHBOR +!$OMP PARALLEL PRIVATE(IAM, NEIGHBOR) SHARED(WORK, ISYNC) NUM_THREADS(4) + IAM = OMP_GET_THREAD_NUM() + 1 + ISYNC(IAM) = 0 +!$OMP BARRIER +! Do computation into my portion of work array + WORK(IAM) = FN1(IAM) +! Announce that I am done with my work. +! The first flush ensures that my work is made visible before +! synch. The second flush ensures that synch is made visible. +!$OMP FLUSH(WORK,ISYNC) + ISYNC(IAM) = 1 +!$OMP FLUSH(ISYNC) + +! Wait until neighbor is done. The first flush ensures that +! synch is read from memory, rather than from the temporary +! view of memory. The second flush ensures that work is read +! from memory, and is done so after the while loop exits. + IF (IAM .EQ. 1) THEN + NEIGHBOR = OMP_GET_NUM_THREADS() + ELSE + NEIGHBOR = IAM - 1 + ENDIF + DO WHILE (ISYNC(NEIGHBOR) .EQ. 0) +!$OMP FLUSH(ISYNC) + END DO +!$OMP FLUSH(WORK, ISYNC) + RESULT(IAM) = FN2(WORK(NEIGHBOR), WORK(IAM)) +!$OMP END PARALLEL + DO I=1,4 + IF (I .EQ. 1) THEN + NEIGHBOR = 4 + ELSE + NEIGHBOR = I - 1 + ENDIF + IF (RESULT(I) .NE. I * 2 + NEIGHBOR * 2) THEN + CALL ABORT + ENDIF + ENDDO + END PROGRAM A18 |