.\"O or processes (a
.\"O .IR "process-shared semaphore" ).
.\"O A thread-shared semaphore is placed in an area of memory shared
-.\"O between by the threads of a process, for example, a global variable.
+.\"O between the threads of a process, for example, a global variable.
.\"O A process-shared semaphore must be placed in a shared memory region
.\"O (e.g., a System V shared memory segment created using
.\"O .BR shmget (2),
.\"O or a POSIX shared memory object built created using
.\"O .BR shm_open (3)).
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.IR "¥×¥í¥»¥¹¶¦Í¥»¥Þ¥Õ¥© (process-shared semaphore)"
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.BR shmget (2)