Retrieve the current and maximum memory from the R process

The memory reported here will likely differ from that reported by gc(), as this includes all memory from the R process, including any child processes and memory allocated outside R's garbage collector heap.

bench_process_memory()

Details

The OS APIs used are as follows

Windows

• PROCESS_MEMORY_COUNTERS.WorkingSetSize

• PROCESS_MEMORY_COUNTERS.PeakWorkingSetSize

macOS

• task_info(TASK_BASIC_INFO)

• rusage.ru_maxrss

linux

• /proc/pid/status VmSize

• /proc/pid/status VmPeak and on Windows PROCESS_MEMORY_COUNTERS.PeakWorkingSetSize