Concurrent hash map updates

A system, comprising:

• one or more processors;
• and
• memory including instructions that, when executed by the one or more processors, cause the system to:
• receive a set of change requests received over a set of parallel threads of execution;
• store information for the change requests to a buffer;
• determine, for individual entries in a hash map representing the environment, the change requests that correspond to the individual entries, wherein multiple change requests are enabled to correspond to one of the individual entries;
• fetch, from the buffer, the information for the change requests corresponding to the individual entries in the hash table;
• and
• iterate through the change requests corresponding to the individual entries in the hash table using single threads of execution for the individual entries in order to update at least a subset of the individual entries.

A computer-implemented method, comprising:

• receiving a set of change requests for a virtual environment, the change requests received over a set of parallel threads of execution;
• determining, for individual entries in a hash map, the change requests that correspond to the individual entries;
• iterating through the change requests corresponding to the individual entries in the hash table using single threads of execution for the individual entries in order to update at least a subset of the individual entries;
• and
• rendering, for display, an image corresponding to the virtual environment resulting from the set of change requests.