Enable asynchronous remote debugging with d8.

Enable asynchronous remote debugging with d8.


BUG=v8:1691
TEST=

Committed: https://code.google.com/p/v8/source/detail?r=10454

[Yang, 2012-01-20 11:47:25]

when running instance A of d8 as debugging agent in the interactive shell and
instance B of d8 as remote debugger and issuing a debug command from B to A, for
example a simple eval (print <something>), A does not send any reply until it
invokes the VM after having finished a blocking shell input.

This patch fixes that, so that B can issue debug commands to A and get a reply
regardless of whether A is waiting for shell input.

PTAL.

[Jakob Kummerow, 2012-01-20 11:53:31]

LGTM

http://codereview.chromium.org/9138015/diff/1/src/d8.cc
File src/d8.cc (right):

http://codereview.chromium.org/9138015/diff/1/src/d8.cc#newcode615
src/d8.cc:615: printf("message trying to be dispatched\n");
intentional?

[Yang, 2012-01-20 11:59:51]

http://codereview.chromium.org/9138015/diff/1/src/d8.cc
File src/d8.cc (right):

http://codereview.chromium.org/9138015/diff/1/src/d8.cc#newcode615
src/d8.cc:615: printf("message trying to be dispatched\n");
On 2012/01/20 11:53:31, Jakob wrote:
> intentional?

Forgot to remove this debug message. Done.