Constraining memory use for overlapping virtual memory operations

A system comprising:

• a plurality of physical devices having storage for aggregation as virtual memory;
• at least one processor;
• and
• computer readable media having stored thereon instructions that are executable by the at least one processor to implement a virtual memory manager to perform operations comprising:
• loading, into an allocated portion of the virtual memory, data of content that is to be modified according to a content operation algorithm carried out in relation to a plurality of portions of the loaded data;
• and
• carrying out the content operation algorithm, in part, by:
• reading, from a portion of a heap memory reserved for the content operation algorithm, a modified portion of the plurality of portions, the reserved portion of the heap memory has a size that is less than a size of the loaded data;
• writing the modified portion to the allocated portion of the virtual memory;
• and
• transferring at least two of the portions of the loaded data between the allocated portion of the virtual memory and the reserved portion of the heap memory such that the at least two portions transferred are constrained to the reserved portion of the heap memory, the at least two portions corresponding to the content that is to be modified.

In a digital medium environment to prevent memory use from exceeding an operational threshold, a method implemented by at least one computing device, the method comprising:

• receiving, by the at least one computing device, a request to perform a modification operation on content, the modification operation implemented according to an algorithm having a plurality of instructions;
• loading, by the at least one computing device, data of the content into virtual memory allocated to the content, the loaded data being partitioned into portions and the content operation algorithm carried out in relation to a plurality of the portions;
• reading, by the at least one computing device from a portion of a heap memory reserved for the modification operation, a modified portion of the plurality of portions, the portion of the heap memory having a size that is less than a size of the loaded data;
• writing, by the at least one computing device, the modified portion to the virtual memory allocated to the content;
• and
• modifying, by the at least one computing device, the content according to the modification operation by carrying out the instructions of the content operation algorithm, including carrying out at least one instruction of the plurality of instructions that affects at least two of the portions corresponding to the content that the modification operation is to be performed on, the at least one instruction carried out, in part, by transferring the at least two portions between the virtual memory and the heap memory such that a number of the portions of the data in the heap memory is constrained to the portion of the heap memory.