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, 2 insertions, 3 deletions

diff --git a/src/core/httpcli/httpcli.h b/src/core/httpcli/httpcli.h
index aef0edfdd4..56eebe951e 100644
--- a/src/core/httpcli/httpcli.h
+++ b/src/core/httpcli/httpcli.h
@@ -36,7 +36,6 @@
 
 #include <stddef.h>
 
-#include "src/core/eventmanager/em.h"
 #include <grpc/support/time.h>
 
 /* User agent this library reports */
@@ -90,7 +89,7 @@ typedef void (*grpc_httpcli_response_cb)(void *user_data,
    'on_response' is a callback to report results to (and 'user_data' is a user
      supplied pointer to pass to said call) */
 void grpc_httpcli_get(const grpc_httpcli_request *request,
-                      gpr_timespec deadline, grpc_em *em,
+                      gpr_timespec deadline,
                       grpc_httpcli_response_cb on_response, void *user_data);
 
 /* Asynchronously perform a HTTP POST.
@@ -98,7 +97,7 @@ void grpc_httpcli_get(const grpc_httpcli_request *request,
    Does not support ?var1=val1&var2=val2 in the path. */
 void grpc_httpcli_post(const grpc_httpcli_request *request,
                        const char *body_bytes, size_t body_size,
-                       gpr_timespec deadline, grpc_em *em,
+                       gpr_timespec deadline,
                        grpc_httpcli_response_cb on_response, void *user_data);
 
 #endif  /* __GRPC_INTERNAL_HTTPCLI_HTTPCLI_H__ */