tdg5

2024-06-11T13:55:58.652-0400 [INFO]  Terraform version: 1.8.3
2024-06-11T13:55:58.653-0400 [DEBUG] using github.com/hashicorp/go-tfe v1.51.0
2024-06-11T13:55:58.653-0400 [DEBUG] using github.com/hashicorp/hcl/v2 v2.20.0
2024-06-11T13:55:58.653-0400 [DEBUG] using github.com/hashicorp/terraform-svchost v0.1.1
2024-06-11T13:55:58.653-0400 [DEBUG] using github.com/zclconf/go-cty v1.14.3
2024-06-11T13:55:58.653-0400 [INFO]  Go runtime version: go1.22.1
2024-06-11T13:55:58.653-0400 [INFO]  CLI args: []string{"terraform", "apply", "-auto-approve"}
2024-06-11T13:55:58.653-0400 [DEBUG] Attempting to open CLI config file: /Users/danny/.terraformrc
2024-06-11T13:55:58.653-0400 [DEBUG] File doesn't exist, but doesn't need to. Ignoring.
2024-06-11T13:55:58.653-0400 [DEBUG] ignoring non-existing provider search directory terraform.d/plugins

tdg5

Installation with RVM:

  $ rvm install 2.2.3 --patch https://gist.githubusercontent.com/tdg5/0fba32242ccc39e71577/raw/b0d869e006761c74dac4ed9dbb779a56b424b63c/ruby_tco.patch

tdg5

/*
https://github.com/apache/cassandra/blob/cassandra-2.0/src/java/org/apache/cassandra/db/compaction/CompactionManager.java#L523
*/
private void doCleanupCompaction(final ColumnFamilyStore cfs, Collection<SSTableReader> sstables, CounterId.OneShotRenewer renewer) throws IOException
{
    assert !cfs.isIndex();
    Keyspace keyspace = cfs.keyspace;
    Collection<Range<Token>> ranges = StorageService.instance.getLocalRanges(keyspace.getName());
    if (ranges.isEmpty())
    {

tdg5

require "tco_method"

# Wrap method definitons in a lambda to facilitate recompiling with tail call
# optimization enabled.
tail_calls = lambda do |this|
  def start_tail_call_chain
    implicit_tail_call
  end

  def implicit_tail_call

tdg5

# Create some special classes to facilitate tracking allocated objects.
class TrackedArray < Array; end
class TrackedString < String; end
STRANG = "a" * 5000

class ClingyObjects
  def generate(should_cling = false)
    strs = TrackedArray.new
    30000.times { strs << TrackedString.new(STRANG) }

tdg5

# Create some special classes to facilitate tracking allocated objects.
class TrackedArray < Array; end
class TrackedString < String; end
STRANG = "a" * 5000

# Other than a few extra escapes, the code below can be understood more or less
# as is.  Any weirdness is to facilitate interpretting with/without tail-call
# optimization in a DRY manner.
KLASS = <<-CODE
class GcFriendlyTco

tdg5

# Abstract UnionList base class
class AbstractUnionList
  private :initialize

  def length
    how_many?(0)
  end

  def how_many?(counter)
    raise NotImplementedError

tdg5

%w[
  after_read
  before_eval
  after_eval
  when_started
  before_session
  after_session
].each do |hook|
  Pry.config.hooks.add_hook(hook.to_sym, "my_#{hook}_hook") do |_, _, _|
    puts "hello from #{hook}"

tdg5

module PartiallyImplementedInterface
  def self.not_implemented_error(klass, method)
    raise NotImplementedError, not_implemented_message(klass, method), caller(2)
  end

  def self.not_implemented_message(klass, method_name)
    "#{method_name} must be implemented by subclasses of #{klass.name}!"
  end
  private_class_method :not_implemented_message

tdg5

def self.pbt_deep_dup_build(clone, original)
  mapped = Set.new
  edges = [[clone, original]]
  while edges.any?
    builder, twin = edges.shift
    pair_hash = "#{builder.class.name}:#{builder.hash}~#{twin.hash}".hash
    next if mapped.include?(pair_hash)

    mapped << pair_hash
    pbt_dup_build(builder, twin)