Introducing iomgr.

Move eventmanager and platform dependent endpoint functionality into a single
library called 'iomgr'.

This is primarily to prepare for a Windows port - where posix socket semantics
lead to poor quality code.

Mostly this is a code movement CL, with some small changes to help prepare the
way for porting:

- em style fd objects can only be held internally in iomgr, and own their memory
- added grpc_iomgr_create_endpoint_pair() to accomodate the common pattern of
creating a tcp endpoint from the output of socketpair - this will help keep
our tests portable
- separated em alarm interface into a separate file, as this part of event
manager is needed higher up the stack
- made the eventmanager bits a true singleton, simplifying API's across the
stack as there's no longer a reason to carry a pointer there.

Initial design document is here:
https://docs.google.com/document/d/1VmafcHvvrP5kwtQkz84R5yXF7u7fW-9Pn0bkSUQHDt8/edit?disco=AAAAARNByxg
	Change on 2014/12/09 by ctiller <ctiller@google.com>
-------------
Created by MOE: http://code.google.com/p/moe-java
MOE_MIGRATED_REVID=81716456

1 files changed, 3 insertions, 4 deletions

diff --git a/src/core/surface/server_chttp2.c b/src/core/surface/server_chttp2.c
index db8924efea..a5fdd03774 100644
--- a/src/core/surface/server_chttp2.c
+++ b/src/core/surface/server_chttp2.c
@@ -35,10 +35,9 @@
 
 #include "src/core/channel/http_filter.h"
 #include "src/core/channel/http_server_filter.h"
-#include "src/core/endpoint/resolve_address.h"
-#include "src/core/endpoint/tcp_server.h"
+#include "src/core/iomgr/resolve_address.h"
+#include "src/core/iomgr/tcp_server.h"
 #include "src/core/surface/server.h"
-#include "src/core/surface/surface_em.h"
 #include "src/core/transport/chttp2_transport.h"
 #include <grpc/support/alloc.h>
 #include <grpc/support/log.h>
@@ -83,7 +82,7 @@ int grpc_server_add_http2_port(grpc_server *server, const char *addr) {
     goto error;
   }
 
-  tcp = grpc_tcp_server_create(grpc_surface_em());
+  tcp = grpc_tcp_server_create();
   if (!tcp) {
     goto error;
   }