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
diff --git a/src/core/iomgr/sockaddr_utils.h b/src/core/iomgr/sockaddr_utils.h
new file mode 100644
index 0000000..753d0c8
--- /dev/null
+++ b/src/core/iomgr/sockaddr_utils.h
@@ -0,0 +1,75 @@
+/*
+ *
+ * Copyright 2014, Google Inc.
+ * All rights reserved.
+ *
+ * Redistribution and use in source and binary forms, with or without
+ * modification, are permitted provided that the following conditions are
+ * met:
+ *
+ * * Redistributions of source code must retain the above copyright
+ * notice, this list of conditions and the following disclaimer.
+ * * Redistributions in binary form must reproduce the above
+ * copyright notice, this list of conditions and the following disclaimer
+ * in the documentation and/or other materials provided with the
+ * distribution.
+ * * Neither the name of Google Inc. nor the names of its
+ * contributors may be used to endorse or promote products derived from
+ * this software without specific prior written permission.
+ *
+ * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
+ * "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
+ * LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR
+ * A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT
+ * OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL,
+ * SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT
+ * LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
+ * DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
+ * THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
+ * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE
+ * OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
+ *
+ */
+
+#ifndef __GRPC_INTERNAL_IOMGR_SOCKADDR_UTILS_H__
+#define __GRPC_INTERNAL_IOMGR_SOCKADDR_UTILS_H__
+
+#include "src/core/iomgr/sockaddr.h"
+
+/* Returns true if addr is an IPv4-mapped IPv6 address within the
+ ::ffff:0.0.0.0/96 range, or false otherwise.
+
+ If addr4_out is non-NULL, the inner IPv4 address will be copied here when
+ returning true. */
+int grpc_sockaddr_is_v4mapped(const struct sockaddr *addr,
+ struct sockaddr_in *addr4_out);
+
+/* If addr is an AF_INET address, writes the corresponding ::ffff:0.0.0.0/96
+ address to addr6_out and returns true. Otherwise returns false. */
+int grpc_sockaddr_to_v4mapped(const struct sockaddr *addr,
+ struct sockaddr_in6 *addr6_out);
+
+/* If addr is ::, 0.0.0.0, or ::ffff:0.0.0.0, writes the port number to
+ *port_out (if not NULL) and returns true, otherwise returns false. */
+int grpc_sockaddr_is_wildcard(const struct sockaddr *addr, int *port_out);
+
+/* Writes 0.0.0.0:port and [::]:port to separate sockaddrs. */
+void grpc_sockaddr_make_wildcards(int port, struct sockaddr_in *wild4_out,
+ struct sockaddr_in6 *wild6_out);
+
+/* Converts a sockaddr into a newly-allocated human-readable string.
+
+ Currently, only the AF_INET and AF_INET6 families are recognized.
+ If the normalize flag is enabled, ::ffff:0.0.0.0/96 IPv6 addresses are
+ displayed as plain IPv4.
+
+ Usage is similar to gpr_asprintf: returns the number of bytes written
+ (excluding the final '\0'), and *out points to a string which must later be
+ destroyed using gpr_free().
+
+ In the unlikely event of an error, returns -1 and sets *out to NULL.
+ The existing value of errno is always preserved. */
+int grpc_sockaddr_to_string(char **out, const struct sockaddr *addr,
+ int normalize);
+
+#endif /* __GRPC_INTERNAL_IOMGR_SOCKADDR_UTILS_H__ */