Expose transferable constructor to Int8List

runtime/vm/os_linux.cc

 // Copyright (c) 2012, the Dart project authors.  Please see the AUTHORS file
 // for details. All rights reserved. Use of this source code is governed by a
 // BSD-style license that can be found in the LICENSE file.
 
 #include "vm/os.h"
 
 #include <errno.h>
 #include <limits.h>
+#include <malloc.h>
 #include <time.h>
 #include <sys/resource.h>
 #include <sys/time.h>
 #include <sys/types.h>
 #include <unistd.h>
 
 #include "platform/utils.h"
 #include "vm/isolate.h"
 
 namespace dart {
@@ skipping 41 matching lines @@
   // gettimeofday has microsecond resolution.
   struct timeval tv;
   if (gettimeofday(&tv, NULL) < 0) {
     UNREACHABLE();
     return 0;
   }
   return (static_cast<int64_t>(tv.tv_sec) * 1000000) + tv.tv_usec;
 }
 
 
+void* OS::AlignedAllocate(intptr_t size, intptr_t alignment) {
+  const int kMinimumAlignment = 16;
+  ASSERT(Utils::IsPowerOfTwo(alignment));
+  ASSERT(alignment >= kMinimumAlignment);
+  void* p = memalign(alignment, size);
+  if (p == NULL) {
+    UNREACHABLE();
+    return NULL;

[cshapiro, 2012/11/30 00:23:25]

ditto

[Cutch, 2012/11/30 04:09:54]

Done.

+  }
+  return p;
+}
+
+
+void OS::AlignedFree(void* ptr) {
+  free(ptr);
+}
+
+
 // TODO(5411554):  May need to hoist these architecture dependent code
 // into a architecture specific file e.g: os_ia32_linux.cc
 word OS::ActivationFrameAlignment() {
 #if defined(TARGET_ARCH_IA32) || defined(TARGET_ARCH_X64)
   const int kMinimumAlignment = 16;
 #elif defined(TARGET_ARCH_ARM)
   const int kMinimumAlignment = 8;
 #else
 #error Unsupported architecture.
 #endif
@@ skipping 126 matching lines @@
 void OS::Abort() {
   abort();
 }
 
 
 void OS::Exit(int code) {
   exit(code);
 }
 
 }  // namespace dart