Default resource limits for sandboxed sessions — default

Returns the resource limits that SecureSession and execute_r() use when sandbox = TRUE and you don't pass limits. Use it to see the defaults, or as a starting point for your own.

Usage

default_limits()

Value

A named list of resource limits.

Details

The returned list contains:

cpu: CPU time limit in seconds (default: 60).
memory: Virtual memory limit in bytes (default: 512 MB).
fsize: Maximum file size in bytes (default: 50 MB).
nproc: Maximum number of processes (default: 50).
nofile: Maximum number of open file descriptors (default: 256).

Pass a changed copy to SecureSession$new(limits = ...) or execute_r(limits = ...). Pass limits = list() to turn all limits off.

Examples

# Inspect defaults
default_limits()
#> $cpu
#> [1] 60
#> 
#> $memory
#> [1] 536870912
#> 
#> $fsize
#> [1] 52428800
#> 
#> $nproc
#> [1] 50
#> 
#> $nofile
#> [1] 256
#> 

# Double the memory limit
my_limits <- default_limits()
my_limits$memory <- 1024 * 1024 * 1024  # 1 GB