[Chapter 3] 3.2.137 semget
Author: Larry Wall, Tom Christiansen & Randal L. Schwartz
Date: 1999-07-02T01:53:49Z

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| Chapter 3 Functions |

### 3.2.137 semget

    semget KEY, NSEMS, SIZE, FLAGS

This function calls the System V IPC system call semget(2). The function returns the semaphore ID, or the undefined value if there is an error. On error, it puts the error code into $!. Before calling, you should say:

    require "ipc.ph";
    require "sem.ph";

This function is available only on machines supporting System V IPC.

3.2.136 semctl |  | 3.2.138 semop