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, 7 insertions, 0 deletions

diff --git a/base/logging.h b/base/logging.h
index 6a58cf3..db7faca 100644
--- a/base/logging.h
+++ b/base/logging.h
@@ -141,6 +141,13 @@ void SetMinLogLevel(int level);
 // Gets the current log level.
 int GetMinLogLevel();
 
+#if defined(OS_LINUX)
+// Get the file descriptor used for logging.
+// Returns -1 if none open.
+// Needed by ZygoteManager.
+int GetLoggingFileDescriptor();
+#endif
+
 // Sets the log filter prefix.  Any log message below LOG_ERROR severity that
 // doesn't start with this prefix with be silently ignored.  The filter defaults
 // to NULL (everything is logged) if this function is not called.  Messages