Top Level Namespace

Defined Under Namespace

Modules: Curl

Constant Summary collapse

DEFAULT_PARALLEL_JOBS = 
begin
  n = Etc.respond_to?(:nprocessors) ? Etc.nprocessors.to_i : 1
  n = 1 if n <= 0
  # Use half the CPUs by default (rounded up), but at least 1
  jobs = [(n.to_f / 2).ceil, 1].max
  jobs
rescue
  1
end
PARALLEL_JOBS = 
begin
  if job_hints && job_hints > 0
    job_hints
  else
    # If no hints provided, default to half the CPUs.
    DEFAULT_PARALLEL_JOBS
  end
end
PARALLEL_CONSTANT_CHECKS =

Only enable if the platform supports fork. On Windows this stays sequential.

PARALLEL_JOBS > 1 && Process.respond_to?(:fork)

Instance Method Summary collapse

Instance Method Details

#define(s, v = 1) ⇒ Object

Check arch flags TODO: detect mismatched arch types when libcurl mac ports is mixed with native mac ruby or vice versa archs = $CFLAGS.scan(/-archs(.*?)s/).first # get the first arch flag if archs and archs.size >= 1

# need to reduce the number of archs...
# guess the first one is correct... at least the first one is probably the ruby installed arch...
# this could lead to compiled binaries that crash at runtime...
$CFLAGS.gsub!(/-arch\s(.*?)\s/,' ')
$CFLAGS << " -arch #{archs.first}"
puts "Selected arch: #{archs.first}"

end



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# File 'ext/extconf.rb', line 46

def define(s, v = 1)
  $defs.push(format("-D HAVE_%s=%d", s.to_s.upcase, v))
end

#detect_job_hints ⇒ Object 



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# File 'ext/extconf.rb', line 75

def detect_job_hints
  # Priority: explicit extconf hint, then common envs used by bundler/rubygems
  [
    ENV['EXTCONF_JOBS'],
    ENV['JOBS'],
    ENV['BUNDLE_JOBS'],
    parse_jobs_from_makeflags(ENV['MAKEFLAGS'])
  ].each do |v|
    n = v.to_i if v
    return n if n && n > 0
  end
  nil
end

#flush_constant_checks ⇒ Object 



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# File 'ext/extconf.rb', line 146

def flush_constant_checks
  return if $queued_constants.empty?

  constants = $queued_constants.uniq
  $queued_constants.clear

  # On platforms without fork (e.g., Windows), run sequentially.
  unless PARALLEL_CONSTANT_CHECKS
    constants.each { |name| have_constant(name) }
    return
  end

  # Run constant probes in isolated child processes to avoid mkmf
  # scratch file and logfile contention.
  results = {}
  pending = constants.dup
  running = {}
  max_jobs = PARALLEL_JOBS

  spawn_probe = lambda do |const_name|
    r, w = IO.pipe
    pid = fork do
      begin
        r.close
        Dir.mktmpdir('curb-mkmf-') do |dir|
          Dir.chdir(dir) do
            begin
              # Avoid clobbering the main mkmf.log
              Logging::logfile = File.open(File::NULL, 'w') rescue File.open(File.join(dir, 'mkmf.log'), 'w')
            rescue
              # best-effort
            end
            sname = const_name.is_a?(Symbol) ? const_name.to_s : const_name.upcase
            ok = try_constant_compile(sname)
            w.write([const_name, ok ? 1 : 0].join("\t"))
          end
        end
      rescue
        # Treat as failure if anything unexpected happens in child
        begin
          w.write([const_name, 0].join("\t"))
        rescue
        end
      ensure
        begin w.close rescue nil end
        # Ensure the child exits without running at_exit handlers
        exit! 0
      end
    end
    w.close
    running[pid] = r
  end

  # Start initial batch
  while running.size < max_jobs && !pending.empty?
    spawn_probe.call(pending.shift)
  end

  # Collect results and keep spawning until done
  until running.empty?
    pid = Process.wait
    io = running.delete(pid)
    if io
      begin
        msg = io.read.to_s
        name_str, ok_str = msg.split("\t", 2)
        if name_str
          # Map back to the original object if symbol-like
          original = constants.find { |n| n.to_s == name_str }
          results[original || name_str] = ok_str.to_i == 1
        end
      ensure
        begin io.close rescue nil end
      end
    end
    # Fill next task slot
    spawn_probe.call(pending.shift) unless pending.empty?
  end

  # Apply results to $defs and output summary via checking_for
  results.each do |const_name, ok|
    sname = const_name.is_a?(Symbol) ? const_name.to_s : const_name.upcase
    checking_for const_name do
      if ok
        define const_name
        true
      else
        false
      end
    end
  end
end

#have_constant(name) ⇒ Object 



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# File 'ext/extconf.rb', line 128

def have_constant(name)
  # Queue constants for optional parallel probing. Falls back to sequential.
  if PARALLEL_CONSTANT_CHECKS
    $queued_constants << name
    true
  else
    sname = name.is_a?(Symbol) ? name.to_s : name.upcase
    checking_for name do
      if try_constant_compile(sname)
        define name
        true
      else
        false
      end
    end
  end
end

#parse_jobs_from_makeflags(flags) ⇒ Object

Optional parallelization support for constant checks only. Enable automatically when job hints are present (JOBS, BUNDLE_JOBS, MAKEFLAGS -jN), or explicitly via EXTCONF_JOBS/EXTCONF_PARALLEL.



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# File 'ext/extconf.rb', line 54

def parse_jobs_from_makeflags(flags)
  return nil if flags.nil? || flags.empty?
  tokens = flags.to_s.split(/\s+/)
  jobs = nil
  tokens.each_with_index do |tok, i|
    case tok
    when /\A-j(\d+)\z/
      jobs = $1.to_i
    when '-j'
      nxt = tokens[i + 1]
      jobs = nxt.to_i if nxt && nxt =~ /\A\d+\z/
    when /\A--jobs(?:=(\d+)|\s+(\d+))\z/
      jobs = ($1 || $2).to_i
    when /\Aj(\d+)\z/ # sometimes make condenses flags
      jobs = $1.to_i
    end
    break if jobs && jobs > 0
  end
  jobs
end

#test_for(name, const, src) ⇒ Object

do some checking to detect ruby 1.8 hash.c vs ruby 1.9 hash.c



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# File 'ext/extconf.rb', line 625

def test_for(name, const, src)
  checking_for name do
    if try_compile(src,"#{$CFLAGS} #{$LIBS}")
      define const
      true
    else
      false
    end
  end
end

#try_constant_compile(sname) ⇒ Object 



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# File 'ext/extconf.rb', line 116

def try_constant_compile(sname)
  src = %{
    #include <curl/curl.h>
    int main() {
      int test = (int)#{sname};
      (void)test;
      return 0;
    }
  }
  try_compile(src, "#{$CFLAGS} #{$LIBS}")
end