annotate libgomp/testsuite/libgomp.fortran/appendix-a/a.2.1.f90 @ 0:a06113de4d67

first commit
author kent <kent@cr.ie.u-ryukyu.ac.jp>
date Fri, 17 Jul 2009 14:47:48 +0900
parents
children
Ignore whitespace changes - Everywhere: Within whitespace: At end of lines:
rev   line source
0
a06113de4d67 first commit
kent <kent@cr.ie.u-ryukyu.ac.jp>
parents:
diff changeset
1 ! { dg-do run }
a06113de4d67 first commit
kent <kent@cr.ie.u-ryukyu.ac.jp>
parents:
diff changeset
2 PROGRAM A2
a06113de4d67 first commit
kent <kent@cr.ie.u-ryukyu.ac.jp>
parents:
diff changeset
3 INCLUDE "omp_lib.h" ! or USE OMP_LIB
a06113de4d67 first commit
kent <kent@cr.ie.u-ryukyu.ac.jp>
parents:
diff changeset
4 INTEGER X
a06113de4d67 first commit
kent <kent@cr.ie.u-ryukyu.ac.jp>
parents:
diff changeset
5 X=2
a06113de4d67 first commit
kent <kent@cr.ie.u-ryukyu.ac.jp>
parents:
diff changeset
6 !$OMP PARALLEL NUM_THREADS(2) SHARED(X)
a06113de4d67 first commit
kent <kent@cr.ie.u-ryukyu.ac.jp>
parents:
diff changeset
7 IF (OMP_GET_THREAD_NUM() .EQ. 0) THEN
a06113de4d67 first commit
kent <kent@cr.ie.u-ryukyu.ac.jp>
parents:
diff changeset
8 X=5
a06113de4d67 first commit
kent <kent@cr.ie.u-ryukyu.ac.jp>
parents:
diff changeset
9 ELSE
a06113de4d67 first commit
kent <kent@cr.ie.u-ryukyu.ac.jp>
parents:
diff changeset
10 ! PRINT 1: The following read of x has a race
a06113de4d67 first commit
kent <kent@cr.ie.u-ryukyu.ac.jp>
parents:
diff changeset
11 PRINT *,"1: THREAD# ", OMP_GET_THREAD_NUM(), "X = ", X
a06113de4d67 first commit
kent <kent@cr.ie.u-ryukyu.ac.jp>
parents:
diff changeset
12 ENDIF
a06113de4d67 first commit
kent <kent@cr.ie.u-ryukyu.ac.jp>
parents:
diff changeset
13 !$OMP BARRIER
a06113de4d67 first commit
kent <kent@cr.ie.u-ryukyu.ac.jp>
parents:
diff changeset
14 IF (OMP_GET_THREAD_NUM() .EQ. 0) THEN
a06113de4d67 first commit
kent <kent@cr.ie.u-ryukyu.ac.jp>
parents:
diff changeset
15 ! PRINT 2
a06113de4d67 first commit
kent <kent@cr.ie.u-ryukyu.ac.jp>
parents:
diff changeset
16 PRINT *,"2: THREAD# ", OMP_GET_THREAD_NUM(), "X = ", X
a06113de4d67 first commit
kent <kent@cr.ie.u-ryukyu.ac.jp>
parents:
diff changeset
17 ELSE
a06113de4d67 first commit
kent <kent@cr.ie.u-ryukyu.ac.jp>
parents:
diff changeset
18 ! PRINT 3
a06113de4d67 first commit
kent <kent@cr.ie.u-ryukyu.ac.jp>
parents:
diff changeset
19 PRINT *,"3: THREAD# ", OMP_GET_THREAD_NUM(), "X = ", X
a06113de4d67 first commit
kent <kent@cr.ie.u-ryukyu.ac.jp>
parents:
diff changeset
20 ENDIF
a06113de4d67 first commit
kent <kent@cr.ie.u-ryukyu.ac.jp>
parents:
diff changeset
21 !$OMP END PARALLEL
a06113de4d67 first commit
kent <kent@cr.ie.u-ryukyu.ac.jp>
parents:
diff changeset
22 END PROGRAM A2