1 files changed, 0 insertions, 105 deletions
diff --git a/mfbt/TaggedAnonymousMemory.cpp b/mfbt/TaggedAnonymousMemory.cpp
deleted file mode 100644
index a2ba9ee4b..000000000
--- a/mfbt/TaggedAnonymousMemory.cpp
+++ /dev/null
@@ -1,105 +0,0 @@
-/* -*- Mode: C++; tab-width: 8; indent-tabs-mode: nil; c-basic-offset: 2 -*- */
-/* vim: set ts=8 sts=2 et sw=2 tw=80: */
-/* This Source Code Form is subject to the terms of the Mozilla Public
- * License, v. 2.0. If a copy of the MPL was not distributed with this
- * file, You can obtain one at http://mozilla.org/MPL/2.0/. */
-
-#ifdef ANDROID
-
-#include "mozilla/TaggedAnonymousMemory.h"
-
-#include <sys/types.h>
-#include <sys/mman.h>
-#include <sys/prctl.h>
-#include <sys/syscall.h>
-#include <unistd.h>
-
-#include "mozilla/Assertions.h"
-
-// These constants are copied from <sys/prctl.h>, because the headers
-// used for building may not have them even though the running kernel
-// supports them.
-#ifndef PR_SET_VMA
-#define PR_SET_VMA		0x53564d41
-#endif
-#ifndef PR_SET_VMA_ANON_NAME
-#define PR_SET_VMA_ANON_NAME		0
-#endif
-
-namespace mozilla {
-
-// Returns 0 for success and -1 (with errno) for error.
-static int
-TagAnonymousMemoryAligned(const void* aPtr, size_t aLength, const char* aTag)
-{
-  return prctl(PR_SET_VMA,
-               PR_SET_VMA_ANON_NAME,
-               reinterpret_cast<unsigned long>(aPtr),
-               aLength,
-               reinterpret_cast<unsigned long>(aTag));
-}
-
-// On some architectures, it's possible for the page size to be larger
-// than the PAGE_SIZE we were compiled with.  This computes the
-// equivalent of PAGE_MASK.
-static uintptr_t
-GetPageMask()
-{
-  static uintptr_t mask = 0;
-
-  if (mask == 0) {
-    uintptr_t pageSize = sysconf(_SC_PAGESIZE);
-    mask = ~(pageSize - 1);
-    MOZ_ASSERT((pageSize & (pageSize - 1)) == 0,
-               "Page size must be a power of 2!");
-  }
-  return mask;
-}
-
-} // namespace mozilla
-
-int
-MozTaggedMemoryIsSupported(void)
-{
-  static int supported = -1;
-
-  if (supported == -1) {
-    // Tagging an empty range always "succeeds" if the feature is supported,
-    // regardless of the start pointer.
-    supported = mozilla::TagAnonymousMemoryAligned(nullptr, 0, nullptr) == 0;
-  }
-  return supported;
-}
-
-void
-MozTagAnonymousMemory(const void* aPtr, size_t aLength, const char* aTag)
-{
-  if (MozTaggedMemoryIsSupported()) {
-    // The kernel will round up the end of the range to the next page
-    // boundary if it's not aligned (comments indicate this behavior
-    // is based on that of madvise), but it will reject the request if
-    // the start is not aligned.  We therefore round down the start
-    // address and adjust the length accordingly.
-    uintptr_t addr = reinterpret_cast<uintptr_t>(aPtr);
-    uintptr_t end = addr + aLength;
-    uintptr_t addrRounded = addr & mozilla::GetPageMask();
-    const void* ptrRounded = reinterpret_cast<const void*>(addrRounded);
-
-    mozilla::TagAnonymousMemoryAligned(ptrRounded, end - addrRounded, aTag);
-  }
-}
-
-void*
-MozTaggedAnonymousMmap(void* aAddr, size_t aLength, int aProt, int aFlags,
-                       int aFd, off_t aOffset, const char* aTag)
-{
-  void* mapped = mmap(aAddr, aLength, aProt, aFlags, aFd, aOffset);
-  if (MozTaggedMemoryIsSupported() &&
-      (aFlags & MAP_ANONYMOUS) == MAP_ANONYMOUS &&
-      mapped != MAP_FAILED) {
-    mozilla::TagAnonymousMemoryAligned(mapped, aLength, aTag);
-  }
-  return mapped;
-}
-
-#endif // ANDROID