/// <summary>
/// Make sure we have obtained the min and max working set limits.
/// </summary>
private void GetWorkingSetLimits(out IntPtr minWorkingSet, out IntPtr maxWorkingSet)
{
// We can only do this for the current process on OS X
if (_processId != Interop.libc.getpid())
{
throw new PlatformNotSupportedException(SR.OsxExternalProcessWorkingSetNotSupported);
}
// Minimum working set (or resident set, as it is called on *nix) doesn't exist so set to 0
minWorkingSet = IntPtr.Zero;
// Get the max working set size
Interop.libc.rlimit info = Interop.libc.getrlimit(Interop.libc.RLIMIT_Resources.RLIMIT_RSS);
maxWorkingSet = new IntPtr(Convert.ToInt64(info.rlim_cur));
}
/// <summary>Sets one or both of the minimum and maximum working set limits.</summary>
/// <param name="newMin">The new minimum working set limit, or null not to change it.</param>
/// <param name="newMax">The new maximum working set limit, or null not to change it.</param>
/// <param name="resultingMin">The resulting minimum working set limit after any changes applied.</param>
/// <param name="resultingMax">The resulting maximum working set limit after any changes applied.</param>
private void SetWorkingSetLimitsCore(IntPtr?newMin, IntPtr?newMax, out IntPtr resultingMin, out IntPtr resultingMax)
{
// We can only do this for the current process on OS X
if (_processId != Interop.libc.getpid())
{
throw new PlatformNotSupportedException(SR.OsxExternalProcessWorkingSetNotSupported);
}
// There isn't a way to set the minimum working set, so throw an exception here
if (newMin.HasValue)
{
throw new PlatformNotSupportedException(SR.MinimumWorkingSetNotSupported);
}
// The minimum resident set will always be 0, default the resulting max to 0 until we set it (to make the compiler happy)
resultingMin = IntPtr.Zero;
resultingMax = IntPtr.Zero;
// The default hard upper limit is absurdly high (over 9000PB) so just change the soft limit...especially since
// if you aren't root and move the upper limit down, you need root to move it back up
if (newMax.HasValue)
{
Interop.libc.rlimit limits = new Interop.libc.rlimit()
{
rlim_cur = (ulong)newMax.Value.ToInt64()
};
int result = Interop.libc.setrlimit(Interop.libc.RLIMIT_Resources.RLIMIT_RSS, ref limits);
if (result < 0)
{
throw new System.ComponentModel.Win32Exception(SR.RUsageFailure);
}
// Grab the actual value, in case the OS decides to fudge the numbers
limits = Interop.libc.getrlimit(Interop.libc.RLIMIT_Resources.RLIMIT_RSS);
resultingMax = new IntPtr((long)limits.rlim_cur);
}
}
/// <summary>Sets one or both of the minimum and maximum working set limits.</summary>
/// <param name="newMin">The new minimum working set limit, or null not to change it.</param>
/// <param name="newMax">The new maximum working set limit, or null not to change it.</param>
/// <param name="resultingMin">The resulting minimum working set limit after any changes applied.</param>
/// <param name="resultingMax">The resulting maximum working set limit after any changes applied.</param>
private void SetWorkingSetLimitsCore(IntPtr? newMin, IntPtr? newMax, out IntPtr resultingMin, out IntPtr resultingMax)
{
// We can only do this for the current process on OS X
if (_processId != Interop.libc.getpid())
throw new PlatformNotSupportedException(SR.OsxExternalProcessWorkingSetNotSupported);
// There isn't a way to set the minimum working set, so throw an exception here
if (newMin.HasValue)
{
throw new PlatformNotSupportedException(SR.MinimumWorkingSetNotSupported);
}
// The minimum resident set will always be 0, default the resulting max to 0 until we set it (to make the compiler happy)
resultingMin = IntPtr.Zero;
resultingMax = IntPtr.Zero;
// The default hard upper limit is absurdly high (over 9000PB) so just change the soft limit...especially since
// if you aren't root and move the upper limit down, you need root to move it back up
if (newMax.HasValue)
{
Interop.libc.rlimit limits = new Interop.libc.rlimit() { rlim_cur = (ulong)newMax.Value.ToInt64() };
int result = Interop.libc.setrlimit(Interop.libc.RLIMIT_Resources.RLIMIT_RSS, ref limits);
if (result < 0)
{
throw new System.ComponentModel.Win32Exception(SR.RUsageFailure);
}
// Grab the actual value, in case the OS decides to fudge the numbers
limits = Interop.libc.getrlimit(Interop.libc.RLIMIT_Resources.RLIMIT_RSS);
resultingMax = new IntPtr((long)limits.rlim_cur);
}
}
