envutil.rb: do not check RSS by default

* test/ruby/envutil.rb (Test::Test#assert_no_memory_leak): do not
  check RSS by default, enabled by rss optional keyword argument.
  TestHash#test_exception_in_rehash sometimes fails otherwise.

git-svn-id: svn+ssh://ci.ruby-lang.org/ruby/trunk@45314 b2dd03c8-39d4-4d8f-98ff-823fe69b080e

test/dl/test_cptr.rb

@@ -221,6 +221,6 @@ module DL
   end
 
   def test_no_memory_leak
-    assert_no_memory_leak(%w[-W0 -rdl.so], '', '100_000.times {DL::CPtr.allocate}', limit: 1.2)
+    assert_no_memory_leak(%w[-W0 -rdl.so], '', '100_000.times {DL::CPtr.allocate}', limit: 1.2, rss: true)
   end
 end

test/dl/test_handle.rb

@@ -186,6 +186,6 @@ module DL
   end
 
   def test_no_memory_leak
-    assert_no_memory_leak(%w[-W0 -rdl.so], '', '100_000.times {DL::Handle.allocate}; GC.start', limit: 1.2)
+    assert_no_memory_leak(%w[-W0 -rdl.so], '', '100_000.times {DL::Handle.allocate}; GC.start', limit: 1.2, rss: true)
   end
 end

test/fiddle/test_handle.rb

@@ -190,7 +190,7 @@ module Fiddle
     end if /freebsd/=~ RUBY_PLATFORM
 
     def test_no_memory_leak
-      assert_no_memory_leak(%w[-W0 -rfiddle.so], '', '100_000.times {Fiddle::Handle.allocate}; GC.start', limit: 1.2)
+      assert_no_memory_leak(%w[-W0 -rfiddle.so], '', '100_000.times {Fiddle::Handle.allocate}; GC.start', limit: 1.2, rss: true)
     end
   end
 end if defined?(Fiddle)

test/fiddle/test_pointer.rb

@@ -232,7 +232,7 @@ module Fiddle
     end
 
     def test_no_memory_leak
-      assert_no_memory_leak(%w[-W0 -rfiddle.so], '', '100_000.times {Fiddle::Pointer.allocate}', limit: 1.2)
+      assert_no_memory_leak(%w[-W0 -rfiddle.so], '', '100_000.times {Fiddle::Pointer.allocate}', limit: 1.2, rss: true)
     end
   end
 end if defined?(Fiddle)

test/ruby/envutil.rb

@@ -390,7 +390,7 @@ eom
         assert_warning(*args) {$VERBOSE = false; yield}
       end
 
-      def assert_no_memory_leak(args, prepare, code, message=nil, limit: 1.5, **opt)
+      def assert_no_memory_leak(args, prepare, code, message=nil, limit: 1.5, rss: false, **opt)
         require_relative 'memory_status'
         token = "\e[7;1m#{$$.to_s}:#{Time.now.strftime('%s.%L')}:#{rand(0x10000).to_s(16)}:\e[m"
         token_dump = token.dump
@@ -415,7 +415,7 @@ eom
         before = err.sub!(/^#{token_re}START=(\{.*\})\n/, '') && Memory::Status.parse($1)
         after = err.sub!(/^#{token_re}FINAL=(\{.*\})\n/, '') && Memory::Status.parse($1)
         assert_equal([true, ""], [status.success?, err], message)
-        ([:size, :rss] & after.members).each do |n|
+        ([:size, (rss && :rss)] & after.members).each do |n|
           b = before[n]
           a = after[n]
           next unless a > 0 and b > 0