Sbrk - Description

Description

The brk and sbrk calls dynamically change the amount of space allocated for the data segment of the calling process. The change is made by resetting the program break of the process, which determines the maximum space that can be allocated. The program break is the address of the first location beyond the current end of the data region. The amount of available space increases as the break value increases. The available space is initialized to a value of zero. The break value can be automatically rounded up to a size appropriate for the memory management architecture.

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