Prototype implementation of zygotes.

Limitations that need addressing still:
- Doesn't forcibly terminate children that should have exited but haven't

Enable with env var ENABLE_ZYGOTE_MANAGER=1.

BUG=11841
TEST=
start the browser, then make chrome and all .pak files unreadable; or alternately, start an installed browser, and uninstall the browser while it's running.  Then create a new tab and browse to two new sites. 

Here's an example script to hide and unhide the .pak files (note: do not move the directory they're in, that doesn't work):

#!/bin/sh
chmod_all() {
   chmod $1 sconsbuild/Debug/chrome
   for path in . locales obj/chrome/app/intermediate/repack obj/global_intermediate/* themes
   do
     chmod $1 sconsbuild/Debug/$path/*.pak
   done
}
case $1 in
hide) chmod_all 000 ;;
show) chmod_all 755 ;;
esac


Review URL: http://codereview.chromium.org/115773

git-svn-id: svn://svn.chromium.org/chrome/trunk/src@17840 0039d316-1c4b-4281-b951-d872f2087c98

1 files changed, 6 insertions, 0 deletions

diff --git a/base/base.gyp b/base/base.gyp
index 10536f6..b26c68e 100644
--- a/base/base.gyp
+++ b/base/base.gyp
@@ -417,6 +417,9 @@
               # so use idle_timer_none.cc instead.
               'idle_timer.cc',
             ],
+            'sources': [
+              'zygote_manager.cc',
+            ],
             'dependencies': [
               '../build/util/build_util.gyp:lastchange',
               '../build/linux/system.gyp:gtk',
@@ -681,6 +684,9 @@
       ],
       'conditions': [
         ['OS == "linux"', {
+          'sources': [
+            'zygote_manager_unittest.cc',
+          ],
           'sources!': [
             'file_version_info_unittest.cc',
             # Linux has an implementation of idle_timer, but it's unclear