Non-SFI mode: Add Linux asynchronous signal support

src/untrusted/nacl/nacl_ext_supply.c

 /*
  * Copyright (c) 2014 The Native Client Authors. All rights reserved.
  * Use of this source code is governed by a BSD-style license that can be
  * found in the LICENSE file.
  */
 
 #include <string.h>
 
 #include "native_client/src/include/nacl_macros.h"
 #include "native_client/src/untrusted/irt/irt_dev.h"
 #include "native_client/src/untrusted/irt/irt_extension.h"
 #include "native_client/src/untrusted/nacl/nacl_irt.h"
 
 /*
  * The declarations here are used as references for nacl_interface_ext_supply()
  * to store the interface table pointers into. They should all be declared as
  * __attribute__((weak)) so that the references to the pointers will be NULL
  * if the user is has not linked in the definition. This makes it so we don't
  * link in extra definitions that are not utilized.
  */
 
 /* Declarations are listed in the same order as in irt.h. */
 extern struct nacl_irt_basic __libnacl_irt_basic __attribute__((weak));
 extern struct nacl_irt_fdio __libnacl_irt_fdio __attribute__((weak));
 extern struct nacl_irt_memory __libnacl_irt_memory __attribute__((weak));
-extern struct nacl_irt_thread __libnacl_irt_thread __attribute__((weak));
+extern struct nacl_irt_thread_v0_2 __libnacl_irt_thread __attribute__((weak));
 extern struct nacl_irt_futex __libnacl_irt_futex __attribute__((weak));
 extern struct nacl_irt_clock __libnacl_irt_clock __attribute__((weak));
 
 /* Declarations are listed in the same order as in irt_dev.h. */
 extern struct nacl_irt_dev_fdio __libnacl_irt_dev_fdio __attribute__((weak));
 extern struct nacl_irt_dev_filename __libnacl_irt_dev_filename
   __attribute__((weak));
 extern struct nacl_irt_tls __libnacl_irt_tls __attribute__((weak));
 extern struct nacl_irt_dev_getpid __libnacl_irt_dev_getpid
   __attribute__((weak));
@@ skipping 65 matching lines @@
       if (nacl_irt_ext_structs[i].table == NULL)
         return 0;
 
       memcpy(nacl_irt_ext_structs[i].table, table, tablesize);
       return tablesize;
     }
   }
 
   return 0;
 }