Function: alloc_in

Allocates size bytes of memory with protection flags Prot in the calling process.

Parameters

This function can be called in 2 ways:

With align

• begin_addr: int - the beginning address of the region you want to allocate inside. this will be rounded up to the next system allocation granularity.
• end_addr: int - the ending address of the region you want to allocate inside. this will be rounded down to previous system allocation granularity.
• size: int - the size of memory to be allocated.
• align: int - the power-of-2 alignment. align must be 0, or power-of-2, >= system allocation granularity, and must be a multiple of system allocation granularity. specifying 0 automatically aligns on the system allocation granularity.
• prot: Prot - the protection flags.

Without align

Align will automatically be set to 0 for this.

• begin_addr: int - the beginning address of the region you want to allocate inside. this will be rounded up to the next system allocation granularity.
• end_addr: int - the ending address of the region you want to allocate inside. this will be rounded down to previous system allocation granularity.
• size: int - the size of memory to be allocated.
• prot: Prot - the protection flags.

Exceptions

If allocation failed. If begin_addr >= end_addr . If align is not power of 2, less than system allocation granularity, or not a multiple of system allocation granularity. If begin addresses next rounded up to granularity is not within begin..end. If end address rounded down to granularity is not within begin..end. If begin and/or end addresses are outside of minimum/maximum application address.

Return Value

Returns an Alloc.