15. Explain the role of the `key_t key` parameter in the `semget()` function

pravjot

15. Explain the role of the `key_t key` parameter in the `semget()` function and how the `ftok()` function is used to generate this key.

a. Give your understanding about knowledge of how unique keys are generated and used to identify semaphore sets.

jainh10022000

key_t key : - A unique key identifier used to identify the semaphore set . The key is crucial for determining whether ` semget()` creates a new semaphore set or returns the identifier of an existing set . the key is usually generated using the ftok() function. which converts file path and a project into a key . This ensures that the same key is generated by different processes that use the same file and project ID

key_t key = ftok("myfile.txt", 'A');

int semid = semget(key,1,IPC_CREAT | 0666);

Here A is project Identifier

sheenu.1885881

key: A unique identifier used to identify the semaphore set. If this key matches an existing semaphore set, that set is returned. If the key is `IPC_PRIVATE`, a new set is always created.

key_t key = ftok("/some/path", 'A');

int semid = semget(key, 1, IPC_CREAT | 0666);

15. Explain the role of the `key_t key` parameter in the `semget()` function

15. Explain the role of the `key_t key` parameter in the `semget()` function and how the `ftok()` function is used to generate this key.

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