Imported Upstream version 6.10.0.49

Former-commit-id: 1d6753294b2993e1fbf92de9366bb9544db4189b

external/llvm-project/compiler-rt/lib/lsan/.clang-format

@@ -0,0 +1 @@
+BasedOnStyle: Google

external/llvm-project/compiler-rt/lib/lsan/CMakeLists.txt

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+include_directories(..)
+
+set(LSAN_CFLAGS ${SANITIZER_COMMON_CFLAGS})
+append_rtti_flag(OFF LSAN_CFLAGS)
+
+set(LSAN_COMMON_SOURCES
+  lsan_common.cc
+  lsan_common_linux.cc
+  lsan_common_mac.cc)
+
+set(LSAN_SOURCES
+  lsan.cc
+  lsan_allocator.cc
+  lsan_linux.cc
+  lsan_interceptors.cc
+  lsan_mac.cc
+  lsan_malloc_mac.cc
+  lsan_preinit.cc
+  lsan_thread.cc)
+
+set(LSAN_SRC_DIR ${CMAKE_CURRENT_SOURCE_DIR})
+
+add_compiler_rt_object_libraries(RTLSanCommon
+    OS ${SANITIZER_COMMON_SUPPORTED_OS}
+    ARCHS ${LSAN_COMMON_SUPPORTED_ARCH}
+    SOURCES ${LSAN_COMMON_SOURCES}
+    CFLAGS ${LSAN_CFLAGS})
+
+if(COMPILER_RT_HAS_LSAN)
+  add_compiler_rt_component(lsan)
+  if(APPLE)
+    set(LSAN_LINK_LIBS ${SANITIZER_COMMON_LINK_LIBS})
+
+    add_weak_symbols("lsan" WEAK_SYMBOL_LINK_FLAGS)
+    add_weak_symbols("sanitizer_common" WEAK_SYMBOL_LINK_FLAGS)
+
+    add_compiler_rt_runtime(clang_rt.lsan
+      SHARED
+      OS ${SANITIZER_COMMON_SUPPORTED_OS}
+      ARCHS ${LSAN_SUPPORTED_ARCH}
+      SOURCES ${LSAN_SOURCES}
+      OBJECT_LIBS RTLSanCommon
+                  RTInterception
+                  RTSanitizerCommon
+                  RTSanitizerCommonLibc
+      CFLAGS ${LSAN_CFLAGS}
+      LINK_FLAGS ${SANITIZER_COMMON_LINK_FLAGS} ${WEAK_SYMBOL_LINK_FLAGS}
+      LINK_LIBS ${LSAN_LINK_LIBS}
+      PARENT_TARGET lsan)
+  else()
+    foreach(arch ${LSAN_SUPPORTED_ARCH})
+      add_compiler_rt_runtime(clang_rt.lsan
+        STATIC
+        ARCHS ${arch}
+        SOURCES ${LSAN_SOURCES}
+                $<TARGET_OBJECTS:RTInterception.${arch}>
+                $<TARGET_OBJECTS:RTSanitizerCommon.${arch}>
+                $<TARGET_OBJECTS:RTSanitizerCommonLibc.${arch}>
+                $<TARGET_OBJECTS:RTLSanCommon.${arch}>
+        CFLAGS ${LSAN_CFLAGS}
+        PARENT_TARGET lsan)
+    endforeach()
+  endif()
+endif()

external/llvm-project/compiler-rt/lib/lsan/lsan.cc

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+//=-- lsan.cc -------------------------------------------------------------===//
+//
+//                     The LLVM Compiler Infrastructure
+//
+// This file is distributed under the University of Illinois Open Source
+// License. See LICENSE.TXT for details.
+//
+//===----------------------------------------------------------------------===//
+//
+// This file is a part of LeakSanitizer.
+// Standalone LSan RTL.
+//
+//===----------------------------------------------------------------------===//
+
+#include "lsan.h"
+
+#include "sanitizer_common/sanitizer_flags.h"
+#include "sanitizer_common/sanitizer_flag_parser.h"
+#include "sanitizer_common/sanitizer_stacktrace.h"
+#include "lsan_allocator.h"
+#include "lsan_common.h"
+#include "lsan_thread.h"
+
+bool lsan_inited;
+bool lsan_init_is_running;
+
+namespace __lsan {
+
+///// Interface to the common LSan module. /////
+bool WordIsPoisoned(uptr addr) {
+  return false;
+}
+
+}  // namespace __lsan
+
+using namespace __lsan;  // NOLINT
+
+static void InitializeFlags() {
+  // Set all the default values.
+  SetCommonFlagsDefaults();
+  {
+    CommonFlags cf;
+    cf.CopyFrom(*common_flags());
+    cf.external_symbolizer_path = GetEnv("LSAN_SYMBOLIZER_PATH");
+    cf.malloc_context_size = 30;
+    cf.intercept_tls_get_addr = true;
+    cf.detect_leaks = true;
+    cf.exitcode = 23;
+    OverrideCommonFlags(cf);
+  }
+
+  Flags *f = flags();
+  f->SetDefaults();
+
+  FlagParser parser;
+  RegisterLsanFlags(&parser, f);
+  RegisterCommonFlags(&parser);
+
+  // Override from user-specified string.
+  const char *lsan_default_options = MaybeCallLsanDefaultOptions();
+  parser.ParseString(lsan_default_options);
+  parser.ParseString(GetEnv("LSAN_OPTIONS"));
+
+  SetVerbosity(common_flags()->verbosity);
+
+  if (Verbosity()) ReportUnrecognizedFlags();
+
+  if (common_flags()->help) parser.PrintFlagDescriptions();
+}
+
+static void OnStackUnwind(const SignalContext &sig, const void *,
+                          BufferedStackTrace *stack) {
+  GetStackTrace(stack, kStackTraceMax, sig.pc, sig.bp, sig.context,
+                common_flags()->fast_unwind_on_fatal);
+}
+
+static void LsanOnDeadlySignal(int signo, void *siginfo, void *context) {
+  HandleDeadlySignal(siginfo, context, GetCurrentThread(), &OnStackUnwind,
+                     nullptr);
+}
+
+extern "C" void __lsan_init() {
+  CHECK(!lsan_init_is_running);
+  if (lsan_inited)
+    return;
+  lsan_init_is_running = true;
+  SanitizerToolName = "LeakSanitizer";
+  CacheBinaryName();
+  AvoidCVE_2016_2143();
+  InitializeFlags();
+  InitCommonLsan();
+  InitializeAllocator();
+  ReplaceSystemMalloc();
+  InitTlsSize();
+  InitializeInterceptors();
+  InitializeThreadRegistry();
+  InstallDeadlySignalHandlers(LsanOnDeadlySignal);
+  u32 tid = ThreadCreate(0, 0, true);
+  CHECK_EQ(tid, 0);
+  ThreadStart(tid, GetTid());
+  SetCurrentThread(tid);
+
+  if (common_flags()->detect_leaks && common_flags()->leak_check_at_exit)
+    Atexit(DoLeakCheck);
+
+  InitializeCoverage(common_flags()->coverage, common_flags()->coverage_dir);
+
+  lsan_inited = true;
+  lsan_init_is_running = false;
+}
+
+extern "C" SANITIZER_INTERFACE_ATTRIBUTE
+void __sanitizer_print_stack_trace() {
+  GET_STACK_TRACE_FATAL;
+  stack.Print();
+}

external/llvm-project/compiler-rt/lib/lsan/lsan.h

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+//=-- lsan.h --------------------------------------------------------------===//
+//
+//                     The LLVM Compiler Infrastructure
+//
+// This file is distributed under the University of Illinois Open Source
+// License. See LICENSE.TXT for details.
+//
+//===----------------------------------------------------------------------===//
+//
+// This file is a part of LeakSanitizer.
+// Private header for standalone LSan RTL.
+//
+//===----------------------------------------------------------------------===//
+
+#include "lsan_thread.h"
+#include "sanitizer_common/sanitizer_flags.h"
+#include "sanitizer_common/sanitizer_stacktrace.h"
+
+#define GET_STACK_TRACE(max_size, fast)                       \
+  __sanitizer::BufferedStackTrace stack;                      \
+  GetStackTrace(&stack, max_size, StackTrace::GetCurrentPc(), \
+                GET_CURRENT_FRAME(), nullptr, fast);
+
+#define GET_STACK_TRACE_FATAL \
+  GET_STACK_TRACE(kStackTraceMax, common_flags()->fast_unwind_on_fatal)
+
+#define GET_STACK_TRACE_MALLOC                                      \
+  GET_STACK_TRACE(__sanitizer::common_flags()->malloc_context_size, \
+                  common_flags()->fast_unwind_on_malloc)
+
+#define GET_STACK_TRACE_THREAD GET_STACK_TRACE(kStackTraceMax, true)
+
+namespace __lsan {
+
+void InitializeInterceptors();
+void ReplaceSystemMalloc();
+
+#define ENSURE_LSAN_INITED do {   \
+  CHECK(!lsan_init_is_running);   \
+  if (!lsan_inited)               \
+    __lsan_init();                \
+} while (0)
+
+// Get the stack trace with the given pc and bp.
+// The pc will be in the position 0 of the resulting stack trace.
+// The bp may refer to the current frame or to the caller's frame.
+ALWAYS_INLINE
+void GetStackTrace(__sanitizer::BufferedStackTrace *stack,
+                   __sanitizer::uptr max_depth, __sanitizer::uptr pc,
+                   __sanitizer::uptr bp, void *context, bool fast) {
+  uptr stack_top = 0, stack_bottom = 0;
+  ThreadContext *t;
+  if (fast && (t = CurrentThreadContext())) {
+    stack_top = t->stack_end();
+    stack_bottom = t->stack_begin();
+  }
+  if (!SANITIZER_MIPS || IsValidFrame(bp, stack_top, stack_bottom)) {
+    stack->Unwind(max_depth, pc, bp, context, stack_top, stack_bottom, fast);
+  }
+}
+
+}  // namespace __lsan
+
+extern bool lsan_inited;
+extern bool lsan_init_is_running;
+
+extern "C" SANITIZER_INTERFACE_ATTRIBUTE void __lsan_init();

external/llvm-project/compiler-rt/lib/lsan/lsan_allocator.cc

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+//=-- lsan_allocator.cc ---------------------------------------------------===//
+//
+//                     The LLVM Compiler Infrastructure
+//
+// This file is distributed under the University of Illinois Open Source
+// License. See LICENSE.TXT for details.
+//
+//===----------------------------------------------------------------------===//
+//
+// This file is a part of LeakSanitizer.
+// See lsan_allocator.h for details.
+//
+//===----------------------------------------------------------------------===//
+
+#include "lsan_allocator.h"
+
+#include "sanitizer_common/sanitizer_allocator.h"
+#include "sanitizer_common/sanitizer_allocator_checks.h"
+#include "sanitizer_common/sanitizer_allocator_interface.h"
+#include "sanitizer_common/sanitizer_errno.h"
+#include "sanitizer_common/sanitizer_internal_defs.h"
+#include "sanitizer_common/sanitizer_stackdepot.h"
+#include "sanitizer_common/sanitizer_stacktrace.h"
+#include "lsan_common.h"
+
+extern "C" void *memset(void *ptr, int value, uptr num);
+
+namespace __lsan {
+#if defined(__i386__) || defined(__arm__)
+static const uptr kMaxAllowedMallocSize = 1UL << 30;
+#elif defined(__mips64) || defined(__aarch64__)
+static const uptr kMaxAllowedMallocSize = 4UL << 30;
+#else
+static const uptr kMaxAllowedMallocSize = 8UL << 30;
+#endif
+typedef LargeMmapAllocator<> SecondaryAllocator;
+typedef CombinedAllocator<PrimaryAllocator, AllocatorCache,
+          SecondaryAllocator> Allocator;
+
+static Allocator allocator;
+
+void InitializeAllocator() {
+  SetAllocatorMayReturnNull(common_flags()->allocator_may_return_null);
+  allocator.InitLinkerInitialized(
+      common_flags()->allocator_release_to_os_interval_ms);
+}
+
+void AllocatorThreadFinish() {
+  allocator.SwallowCache(GetAllocatorCache());
+}
+
+static ChunkMetadata *Metadata(const void *p) {
+  return reinterpret_cast<ChunkMetadata *>(allocator.GetMetaData(p));
+}
+
+static void RegisterAllocation(const StackTrace &stack, void *p, uptr size) {
+  if (!p) return;
+  ChunkMetadata *m = Metadata(p);
+  CHECK(m);
+  m->tag = DisabledInThisThread() ? kIgnored : kDirectlyLeaked;
+  m->stack_trace_id = StackDepotPut(stack);
+  m->requested_size = size;
+  atomic_store(reinterpret_cast<atomic_uint8_t *>(m), 1, memory_order_relaxed);
+}
+
+static void RegisterDeallocation(void *p) {
+  if (!p) return;
+  ChunkMetadata *m = Metadata(p);
+  CHECK(m);
+  atomic_store(reinterpret_cast<atomic_uint8_t *>(m), 0, memory_order_relaxed);
+}
+
+void *Allocate(const StackTrace &stack, uptr size, uptr alignment,
+               bool cleared) {
+  if (size == 0)
+    size = 1;
+  if (size > kMaxAllowedMallocSize) {
+    Report("WARNING: LeakSanitizer failed to allocate %zu bytes\n", size);
+    return Allocator::FailureHandler::OnBadRequest();
+  }
+  void *p = allocator.Allocate(GetAllocatorCache(), size, alignment);
+  // Do not rely on the allocator to clear the memory (it's slow).
+  if (cleared && allocator.FromPrimary(p))
+    memset(p, 0, size);
+  RegisterAllocation(stack, p, size);
+  if (&__sanitizer_malloc_hook) __sanitizer_malloc_hook(p, size);
+  RunMallocHooks(p, size);
+  return p;
+}
+
+static void *Calloc(uptr nmemb, uptr size, const StackTrace &stack) {
+  if (UNLIKELY(CheckForCallocOverflow(size, nmemb)))
+    return Allocator::FailureHandler::OnBadRequest();
+  size *= nmemb;
+  return Allocate(stack, size, 1, true);
+}
+
+void Deallocate(void *p) {
+  if (&__sanitizer_free_hook) __sanitizer_free_hook(p);
+  RunFreeHooks(p);
+  RegisterDeallocation(p);
+  allocator.Deallocate(GetAllocatorCache(), p);
+}
+
+void *Reallocate(const StackTrace &stack, void *p, uptr new_size,
+                 uptr alignment) {
+  RegisterDeallocation(p);
+  if (new_size > kMaxAllowedMallocSize) {
+    Report("WARNING: LeakSanitizer failed to allocate %zu bytes\n", new_size);
+    allocator.Deallocate(GetAllocatorCache(), p);
+    return Allocator::FailureHandler::OnBadRequest();
+  }
+  p = allocator.Reallocate(GetAllocatorCache(), p, new_size, alignment);
+  RegisterAllocation(stack, p, new_size);
+  return p;
+}
+
+void GetAllocatorCacheRange(uptr *begin, uptr *end) {
+  *begin = (uptr)GetAllocatorCache();
+  *end = *begin + sizeof(AllocatorCache);
+}
+
+uptr GetMallocUsableSize(const void *p) {
+  ChunkMetadata *m = Metadata(p);
+  if (!m) return 0;
+  return m->requested_size;
+}
+
+void *lsan_memalign(uptr alignment, uptr size, const StackTrace &stack) {
+  if (UNLIKELY(!IsPowerOfTwo(alignment))) {
+    errno = errno_EINVAL;
+    return Allocator::FailureHandler::OnBadRequest();
+  }
+  return SetErrnoOnNull(Allocate(stack, size, alignment, kAlwaysClearMemory));
+}
+
+void *lsan_malloc(uptr size, const StackTrace &stack) {
+  return SetErrnoOnNull(Allocate(stack, size, 1, kAlwaysClearMemory));
+}
+
+void lsan_free(void *p) {
+  Deallocate(p);
+}
+
+void *lsan_realloc(void *p, uptr size, const StackTrace &stack) {
+  return SetErrnoOnNull(Reallocate(stack, p, size, 1));
+}
+
+void *lsan_calloc(uptr nmemb, uptr size, const StackTrace &stack) {
+  return SetErrnoOnNull(Calloc(nmemb, size, stack));
+}
+
+void *lsan_valloc(uptr size, const StackTrace &stack) {
+  return SetErrnoOnNull(
+      Allocate(stack, size, GetPageSizeCached(), kAlwaysClearMemory));
+}
+
+uptr lsan_mz_size(const void *p) {
+  return GetMallocUsableSize(p);
+}
+
+///// Interface to the common LSan module. /////
+
+void LockAllocator() {
+  allocator.ForceLock();
+}
+
+void UnlockAllocator() {
+  allocator.ForceUnlock();
+}
+
+void GetAllocatorGlobalRange(uptr *begin, uptr *end) {
+  *begin = (uptr)&allocator;
+  *end = *begin + sizeof(allocator);
+}
+
+uptr PointsIntoChunk(void* p) {
+  uptr addr = reinterpret_cast<uptr>(p);
+  uptr chunk = reinterpret_cast<uptr>(allocator.GetBlockBeginFastLocked(p));
+  if (!chunk) return 0;
+  // LargeMmapAllocator considers pointers to the meta-region of a chunk to be
+  // valid, but we don't want that.
+  if (addr < chunk) return 0;
+  ChunkMetadata *m = Metadata(reinterpret_cast<void *>(chunk));
+  CHECK(m);
+  if (!m->allocated)
+    return 0;
+  if (addr < chunk + m->requested_size)
+    return chunk;
+  if (IsSpecialCaseOfOperatorNew0(chunk, m->requested_size, addr))
+    return chunk;
+  return 0;
+}
+
+uptr GetUserBegin(uptr chunk) {
+  return chunk;
+}
+
+LsanMetadata::LsanMetadata(uptr chunk) {
+  metadata_ = Metadata(reinterpret_cast<void *>(chunk));
+  CHECK(metadata_);
+}
+
+bool LsanMetadata::allocated() const {
+  return reinterpret_cast<ChunkMetadata *>(metadata_)->allocated;
+}
+
+ChunkTag LsanMetadata::tag() const {
+  return reinterpret_cast<ChunkMetadata *>(metadata_)->tag;
+}
+
+void LsanMetadata::set_tag(ChunkTag value) {
+  reinterpret_cast<ChunkMetadata *>(metadata_)->tag = value;
+}
+
+uptr LsanMetadata::requested_size() const {
+  return reinterpret_cast<ChunkMetadata *>(metadata_)->requested_size;
+}
+
+u32 LsanMetadata::stack_trace_id() const {
+  return reinterpret_cast<ChunkMetadata *>(metadata_)->stack_trace_id;
+}
+
+void ForEachChunk(ForEachChunkCallback callback, void *arg) {
+  allocator.ForEachChunk(callback, arg);
+}
+
+IgnoreObjectResult IgnoreObjectLocked(const void *p) {
+  void *chunk = allocator.GetBlockBegin(p);
+  if (!chunk || p < chunk) return kIgnoreObjectInvalid;
+  ChunkMetadata *m = Metadata(chunk);
+  CHECK(m);
+  if (m->allocated && (uptr)p < (uptr)chunk + m->requested_size) {
+    if (m->tag == kIgnored)
+      return kIgnoreObjectAlreadyIgnored;
+    m->tag = kIgnored;
+    return kIgnoreObjectSuccess;
+  } else {
+    return kIgnoreObjectInvalid;
+  }
+}
+} // namespace __lsan
+
+using namespace __lsan;
+
+extern "C" {
+SANITIZER_INTERFACE_ATTRIBUTE
+uptr __sanitizer_get_current_allocated_bytes() {
+  uptr stats[AllocatorStatCount];
+  allocator.GetStats(stats);
+  return stats[AllocatorStatAllocated];
+}
+
+SANITIZER_INTERFACE_ATTRIBUTE
+uptr __sanitizer_get_heap_size() {
+  uptr stats[AllocatorStatCount];
+  allocator.GetStats(stats);
+  return stats[AllocatorStatMapped];
+}
+
+SANITIZER_INTERFACE_ATTRIBUTE
+uptr __sanitizer_get_free_bytes() { return 0; }
+
+SANITIZER_INTERFACE_ATTRIBUTE
+uptr __sanitizer_get_unmapped_bytes() { return 0; }
+
+SANITIZER_INTERFACE_ATTRIBUTE
+uptr __sanitizer_get_estimated_allocated_size(uptr size) { return size; }
+
+SANITIZER_INTERFACE_ATTRIBUTE
+int __sanitizer_get_ownership(const void *p) { return Metadata(p) != nullptr; }
+
+SANITIZER_INTERFACE_ATTRIBUTE
+uptr __sanitizer_get_allocated_size(const void *p) {
+  return GetMallocUsableSize(p);
+}
+
+#if !SANITIZER_SUPPORTS_WEAK_HOOKS
+// Provide default (no-op) implementation of malloc hooks.
+SANITIZER_INTERFACE_ATTRIBUTE SANITIZER_WEAK_ATTRIBUTE
+void __sanitizer_malloc_hook(void *ptr, uptr size) {
+  (void)ptr;
+  (void)size;
+}
+SANITIZER_INTERFACE_ATTRIBUTE SANITIZER_WEAK_ATTRIBUTE
+void __sanitizer_free_hook(void *ptr) {
+  (void)ptr;
+}
+#endif
+} // extern "C"

external/llvm-project/compiler-rt/lib/lsan/lsan_allocator.h

@@ -0,0 +1,103 @@
+//=-- lsan_allocator.h ----------------------------------------------------===//
+//
+//                     The LLVM Compiler Infrastructure
+//
+// This file is distributed under the University of Illinois Open Source
+// License. See LICENSE.TXT for details.
+//
+//===----------------------------------------------------------------------===//
+//
+// This file is a part of LeakSanitizer.
+// Allocator for standalone LSan.
+//
+//===----------------------------------------------------------------------===//
+
+#ifndef LSAN_ALLOCATOR_H
+#define LSAN_ALLOCATOR_H
+
+#include "sanitizer_common/sanitizer_allocator.h"
+#include "sanitizer_common/sanitizer_common.h"
+#include "sanitizer_common/sanitizer_internal_defs.h"
+#include "lsan_common.h"
+
+namespace __lsan {
+
+void *Allocate(const StackTrace &stack, uptr size, uptr alignment,
+               bool cleared);
+void Deallocate(void *p);
+void *Reallocate(const StackTrace &stack, void *p, uptr new_size,
+                 uptr alignment);
+uptr GetMallocUsableSize(const void *p);
+
+template<typename Callable>
+void ForEachChunk(const Callable &callback);
+
+void GetAllocatorCacheRange(uptr *begin, uptr *end);
+void AllocatorThreadFinish();
+void InitializeAllocator();
+
+const bool kAlwaysClearMemory = true;
+
+struct ChunkMetadata {
+  u8 allocated : 8;  // Must be first.
+  ChunkTag tag : 2;
+#if SANITIZER_WORDSIZE == 64
+  uptr requested_size : 54;
+#else
+  uptr requested_size : 32;
+  uptr padding : 22;
+#endif
+  u32 stack_trace_id;
+};
+
+#if defined(__mips64) || defined(__aarch64__) || defined(__i386__) || \
+    defined(__arm__)
+static const uptr kRegionSizeLog = 20;
+static const uptr kNumRegions = SANITIZER_MMAP_RANGE_SIZE >> kRegionSizeLog;
+typedef TwoLevelByteMap<(kNumRegions >> 12), 1 << 12> ByteMap;
+
+struct AP32 {
+  static const uptr kSpaceBeg = 0;
+  static const u64 kSpaceSize = SANITIZER_MMAP_RANGE_SIZE;
+  static const uptr kMetadataSize = sizeof(ChunkMetadata);
+  typedef __sanitizer::CompactSizeClassMap SizeClassMap;
+  static const uptr kRegionSizeLog = __lsan::kRegionSizeLog;
+  typedef __lsan::ByteMap ByteMap;
+  typedef NoOpMapUnmapCallback MapUnmapCallback;
+  static const uptr kFlags = 0;
+};
+typedef SizeClassAllocator32<AP32> PrimaryAllocator;
+#elif defined(__x86_64__) || defined(__powerpc64__)
+# if defined(__powerpc64__)
+const uptr kAllocatorSpace = 0xa0000000000ULL;
+const uptr kAllocatorSize  = 0x20000000000ULL;  // 2T.
+# else
+const uptr kAllocatorSpace = 0x600000000000ULL;
+const uptr kAllocatorSize  = 0x40000000000ULL;  // 4T.
+# endif
+struct AP64 {  // Allocator64 parameters. Deliberately using a short name.
+  static const uptr kSpaceBeg = kAllocatorSpace;
+  static const uptr kSpaceSize = kAllocatorSize;
+  static const uptr kMetadataSize = sizeof(ChunkMetadata);
+  typedef DefaultSizeClassMap SizeClassMap;
+  typedef NoOpMapUnmapCallback MapUnmapCallback;
+  static const uptr kFlags = 0;
+};
+
+typedef SizeClassAllocator64<AP64> PrimaryAllocator;
+#endif
+typedef SizeClassAllocatorLocalCache<PrimaryAllocator> AllocatorCache;
+
+AllocatorCache *GetAllocatorCache();
+
+void *lsan_memalign(uptr alignment, uptr size, const StackTrace &stack);
+void *lsan_malloc(uptr size, const StackTrace &stack);
+void lsan_free(void *p);
+void *lsan_realloc(void *p, uptr size, const StackTrace &stack);
+void *lsan_calloc(uptr nmemb, uptr size, const StackTrace &stack);
+void *lsan_valloc(uptr size, const StackTrace &stack);
+uptr lsan_mz_size(const void *p);
+
+}  // namespace __lsan
+
+#endif  // LSAN_ALLOCATOR_H

external/llvm-project/compiler-rt/lib/lsan/lsan_common.h

@@ -0,0 +1,264 @@
+//=-- lsan_common.h -------------------------------------------------------===//
+//
+//                     The LLVM Compiler Infrastructure
+//
+// This file is distributed under the University of Illinois Open Source
+// License. See LICENSE.TXT for details.
+//
+//===----------------------------------------------------------------------===//
+//
+// This file is a part of LeakSanitizer.
+// Private LSan header.
+//
+//===----------------------------------------------------------------------===//
+
+#ifndef LSAN_COMMON_H
+#define LSAN_COMMON_H
+
+#include "sanitizer_common/sanitizer_allocator.h"
+#include "sanitizer_common/sanitizer_common.h"
+#include "sanitizer_common/sanitizer_internal_defs.h"
+#include "sanitizer_common/sanitizer_platform.h"
+#include "sanitizer_common/sanitizer_stoptheworld.h"
+#include "sanitizer_common/sanitizer_symbolizer.h"
+
+// LeakSanitizer relies on some Glibc's internals (e.g. TLS machinery) thus
+// supported for Linux only. Also, LSan doesn't like 32 bit architectures
+// because of "small" (4 bytes) pointer size that leads to high false negative
+// ratio on large leaks. But we still want to have it for some 32 bit arches
+// (e.g. x86), see https://github.com/google/sanitizers/issues/403.
+// To enable LeakSanitizer on a new architecture, one needs to implement the
+// internal_clone function as well as (probably) adjust the TLS machinery for
+// the new architecture inside the sanitizer library.
+#if (SANITIZER_LINUX && !SANITIZER_ANDROID || SANITIZER_MAC) && \
+    (SANITIZER_WORDSIZE == 64) &&                               \
+    (defined(__x86_64__) || defined(__mips64) || defined(__aarch64__) || \
+     defined(__powerpc64__))
+#define CAN_SANITIZE_LEAKS 1
+#elif defined(__i386__) && \
+    (SANITIZER_LINUX && !SANITIZER_ANDROID || SANITIZER_MAC)
+#define CAN_SANITIZE_LEAKS 1
+#elif defined(__arm__) && \
+    SANITIZER_LINUX && !SANITIZER_ANDROID
+#define CAN_SANITIZE_LEAKS 1
+#else
+#define CAN_SANITIZE_LEAKS 0
+#endif
+
+namespace __sanitizer {
+class FlagParser;
+struct DTLS;
+}
+
+namespace __lsan {
+
+// Chunk tags.
+enum ChunkTag {
+  kDirectlyLeaked = 0,  // default
+  kIndirectlyLeaked = 1,
+  kReachable = 2,
+  kIgnored = 3
+};
+
+const u32 kInvalidTid = (u32) -1;
+
+struct Flags {
+#define LSAN_FLAG(Type, Name, DefaultValue, Description) Type Name;
+#include "lsan_flags.inc"
+#undef LSAN_FLAG
+
+  void SetDefaults();
+  uptr pointer_alignment() const {
+    return use_unaligned ? 1 : sizeof(uptr);
+  }
+};
+
+extern Flags lsan_flags;
+inline Flags *flags() { return &lsan_flags; }
+void RegisterLsanFlags(FlagParser *parser, Flags *f);
+
+struct Leak {
+  u32 id;
+  uptr hit_count;
+  uptr total_size;
+  u32 stack_trace_id;
+  bool is_directly_leaked;
+  bool is_suppressed;
+};
+
+struct LeakedObject {
+  u32 leak_id;
+  uptr addr;
+  uptr size;
+};
+
+// Aggregates leaks by stack trace prefix.
+class LeakReport {
+ public:
+  LeakReport() : next_id_(0), leaks_(1), leaked_objects_(1) {}
+  void AddLeakedChunk(uptr chunk, u32 stack_trace_id, uptr leaked_size,
+                      ChunkTag tag);
+  void ReportTopLeaks(uptr max_leaks);
+  void PrintSummary();
+  void ApplySuppressions();
+  uptr UnsuppressedLeakCount();
+
+
+ private:
+  void PrintReportForLeak(uptr index);
+  void PrintLeakedObjectsForLeak(uptr index);
+
+  u32 next_id_;
+  InternalMmapVector<Leak> leaks_;
+  InternalMmapVector<LeakedObject> leaked_objects_;
+};
+
+typedef InternalMmapVector<uptr> Frontier;
+
+// Platform-specific functions.
+void InitializePlatformSpecificModules();
+void ProcessGlobalRegions(Frontier *frontier);
+void ProcessPlatformSpecificAllocations(Frontier *frontier);
+
+struct RootRegion {
+  uptr begin;
+  uptr size;
+};
+
+InternalMmapVector<RootRegion> const *GetRootRegions();
+void ScanRootRegion(Frontier *frontier, RootRegion const &region,
+                    uptr region_begin, uptr region_end, bool is_readable);
+// Run stoptheworld while holding any platform-specific locks.
+void DoStopTheWorld(StopTheWorldCallback callback, void* argument);
+
+void ScanRangeForPointers(uptr begin, uptr end,
+                          Frontier *frontier,
+                          const char *region_type, ChunkTag tag);
+void ScanGlobalRange(uptr begin, uptr end, Frontier *frontier);
+
+enum IgnoreObjectResult {
+  kIgnoreObjectSuccess,
+  kIgnoreObjectAlreadyIgnored,
+  kIgnoreObjectInvalid
+};
+
+// Functions called from the parent tool.
+const char *MaybeCallLsanDefaultOptions();
+void InitCommonLsan();
+void DoLeakCheck();
+void DoRecoverableLeakCheckVoid();
+void DisableCounterUnderflow();
+bool DisabledInThisThread();
+
+// Used to implement __lsan::ScopedDisabler.
+void DisableInThisThread();
+void EnableInThisThread();
+// Can be used to ignore memory allocated by an intercepted
+// function.
+struct ScopedInterceptorDisabler {
+  ScopedInterceptorDisabler() { DisableInThisThread(); }
+  ~ScopedInterceptorDisabler() { EnableInThisThread(); }
+};
+
+// According to Itanium C++ ABI array cookie is a one word containing
+// size of allocated array.
+static inline bool IsItaniumABIArrayCookie(uptr chunk_beg, uptr chunk_size,
+                                           uptr addr) {
+  return chunk_size == sizeof(uptr) && chunk_beg + chunk_size == addr &&
+         *reinterpret_cast<uptr *>(chunk_beg) == 0;
+}
+
+// According to ARM C++ ABI array cookie consists of two words:
+// struct array_cookie {
+//   std::size_t element_size; // element_size != 0
+//   std::size_t element_count;
+// };
+static inline bool IsARMABIArrayCookie(uptr chunk_beg, uptr chunk_size,
+                                       uptr addr) {
+  return chunk_size == 2 * sizeof(uptr) && chunk_beg + chunk_size == addr &&
+         *reinterpret_cast<uptr *>(chunk_beg + sizeof(uptr)) == 0;
+}
+
+// Special case for "new T[0]" where T is a type with DTOR.
+// new T[0] will allocate a cookie (one or two words) for the array size (0)
+// and store a pointer to the end of allocated chunk. The actual cookie layout
+// varies between platforms according to their C++ ABI implementation.
+inline bool IsSpecialCaseOfOperatorNew0(uptr chunk_beg, uptr chunk_size,
+                                        uptr addr) {
+#if defined(__arm__)
+  return IsARMABIArrayCookie(chunk_beg, chunk_size, addr);
+#else
+  return IsItaniumABIArrayCookie(chunk_beg, chunk_size, addr);
+#endif
+}
+
+// The following must be implemented in the parent tool.
+
+void ForEachChunk(ForEachChunkCallback callback, void *arg);
+// Returns the address range occupied by the global allocator object.
+void GetAllocatorGlobalRange(uptr *begin, uptr *end);
+// Wrappers for allocator's ForceLock()/ForceUnlock().
+void LockAllocator();
+void UnlockAllocator();
+// Returns true if [addr, addr + sizeof(void *)) is poisoned.
+bool WordIsPoisoned(uptr addr);
+// Wrappers for ThreadRegistry access.
+void LockThreadRegistry();
+void UnlockThreadRegistry();
+bool GetThreadRangesLocked(tid_t os_id, uptr *stack_begin, uptr *stack_end,
+                           uptr *tls_begin, uptr *tls_end, uptr *cache_begin,
+                           uptr *cache_end, DTLS **dtls);
+void ForEachExtraStackRange(tid_t os_id, RangeIteratorCallback callback,
+                            void *arg);
+// If called from the main thread, updates the main thread's TID in the thread
+// registry. We need this to handle processes that fork() without a subsequent
+// exec(), which invalidates the recorded TID. To update it, we must call
+// gettid() from the main thread. Our solution is to call this function before
+// leak checking and also before every call to pthread_create() (to handle cases
+// where leak checking is initiated from a non-main thread).
+void EnsureMainThreadIDIsCorrect();
+// If p points into a chunk that has been allocated to the user, returns its
+// user-visible address. Otherwise, returns 0.
+uptr PointsIntoChunk(void *p);
+// Returns address of user-visible chunk contained in this allocator chunk.
+uptr GetUserBegin(uptr chunk);
+// Helper for __lsan_ignore_object().
+IgnoreObjectResult IgnoreObjectLocked(const void *p);
+
+// Return the linker module, if valid for the platform.
+LoadedModule *GetLinker();
+
+// Return true if LSan has finished leak checking and reported leaks.
+bool HasReportedLeaks();
+
+// Run platform-specific leak handlers.
+void HandleLeaks();
+
+// Wrapper for chunk metadata operations.
+class LsanMetadata {
+ public:
+  // Constructor accepts address of user-visible chunk.
+  explicit LsanMetadata(uptr chunk);
+  bool allocated() const;
+  ChunkTag tag() const;
+  void set_tag(ChunkTag value);
+  uptr requested_size() const;
+  u32 stack_trace_id() const;
+ private:
+  void *metadata_;
+};
+
+}  // namespace __lsan
+
+extern "C" {
+SANITIZER_INTERFACE_ATTRIBUTE SANITIZER_WEAK_ATTRIBUTE
+const char *__lsan_default_options();
+
+SANITIZER_INTERFACE_ATTRIBUTE SANITIZER_WEAK_ATTRIBUTE
+int __lsan_is_turned_off();
+
+SANITIZER_INTERFACE_ATTRIBUTE SANITIZER_WEAK_ATTRIBUTE
+const char *__lsan_default_suppressions();
+}  // extern "C"
+
+#endif  // LSAN_COMMON_H

external/llvm-project/compiler-rt/lib/lsan/lsan_common_linux.cc

@@ -0,0 +1,140 @@
+//=-- lsan_common_linux.cc ------------------------------------------------===//
+//
+//                     The LLVM Compiler Infrastructure
+//
+// This file is distributed under the University of Illinois Open Source
+// License. See LICENSE.TXT for details.
+//
+//===----------------------------------------------------------------------===//
+//
+// This file is a part of LeakSanitizer.
+// Implementation of common leak checking functionality. Linux-specific code.
+//
+//===----------------------------------------------------------------------===//
+
+#include "sanitizer_common/sanitizer_platform.h"
+#include "lsan_common.h"
+
+#if CAN_SANITIZE_LEAKS && SANITIZER_LINUX
+#include <link.h>
+
+#include "sanitizer_common/sanitizer_common.h"
+#include "sanitizer_common/sanitizer_flags.h"
+#include "sanitizer_common/sanitizer_getauxval.h"
+#include "sanitizer_common/sanitizer_linux.h"
+#include "sanitizer_common/sanitizer_stackdepot.h"
+
+namespace __lsan {
+
+static const char kLinkerName[] = "ld";
+
+static char linker_placeholder[sizeof(LoadedModule)] ALIGNED(64);
+static LoadedModule *linker = nullptr;
+
+static bool IsLinker(const LoadedModule& module) {
+#if SANITIZER_USE_GETAUXVAL
+  return module.base_address() == getauxval(AT_BASE);
+#else
+  return LibraryNameIs(module.full_name(), kLinkerName);
+#endif  // SANITIZER_USE_GETAUXVAL
+}
+
+__attribute__((tls_model("initial-exec")))
+THREADLOCAL int disable_counter;
+bool DisabledInThisThread() { return disable_counter > 0; }
+void DisableInThisThread() { disable_counter++; }
+void EnableInThisThread() {
+  if (disable_counter == 0) {
+    DisableCounterUnderflow();
+  }
+  disable_counter--;
+}
+
+void InitializePlatformSpecificModules() {
+  ListOfModules modules;
+  modules.init();
+  for (LoadedModule &module : modules) {
+    if (!IsLinker(module))
+      continue;
+    if (linker == nullptr) {
+      linker = reinterpret_cast<LoadedModule *>(linker_placeholder);
+      *linker = module;
+      module = LoadedModule();
+    } else {
+      VReport(1, "LeakSanitizer: Multiple modules match \"%s\". "
+              "TLS and other allocations originating from linker might be "
+              "falsely reported as leaks.\n", kLinkerName);
+      linker->clear();
+      linker = nullptr;
+      return;
+    }
+  }
+  if (linker == nullptr) {
+    VReport(1, "LeakSanitizer: Dynamic linker not found. TLS and other "
+               "allocations originating from linker might be falsely reported "
+                "as leaks.\n");
+  }
+}
+
+static int ProcessGlobalRegionsCallback(struct dl_phdr_info *info, size_t size,
+                                        void *data) {
+  Frontier *frontier = reinterpret_cast<Frontier *>(data);
+  for (uptr j = 0; j < info->dlpi_phnum; j++) {
+    const ElfW(Phdr) *phdr = &(info->dlpi_phdr[j]);
+    // We're looking for .data and .bss sections, which reside in writeable,
+    // loadable segments.
+    if (!(phdr->p_flags & PF_W) || (phdr->p_type != PT_LOAD) ||
+        (phdr->p_memsz == 0))
+      continue;
+    uptr begin = info->dlpi_addr + phdr->p_vaddr;
+    uptr end = begin + phdr->p_memsz;
+    ScanGlobalRange(begin, end, frontier);
+  }
+  return 0;
+}
+
+// Scans global variables for heap pointers.
+void ProcessGlobalRegions(Frontier *frontier) {
+  if (!flags()->use_globals) return;
+  dl_iterate_phdr(ProcessGlobalRegionsCallback, frontier);
+}
+
+LoadedModule *GetLinker() { return linker; }
+
+void ProcessPlatformSpecificAllocations(Frontier *frontier) {}
+
+struct DoStopTheWorldParam {
+  StopTheWorldCallback callback;
+  void *argument;
+};
+
+// While calling Die() here is undefined behavior and can potentially
+// cause race conditions, it isn't possible to intercept exit on linux,
+// so we have no choice but to call Die() from the atexit handler.
+void HandleLeaks() {
+  if (common_flags()->exitcode) Die();
+}
+
+static int DoStopTheWorldCallback(struct dl_phdr_info *info, size_t size,
+                                  void *data) {
+  DoStopTheWorldParam *param = reinterpret_cast<DoStopTheWorldParam *>(data);
+  StopTheWorld(param->callback, param->argument);
+  return 1;
+}
+
+// LSan calls dl_iterate_phdr() from the tracer task. This may deadlock: if one
+// of the threads is frozen while holding the libdl lock, the tracer will hang
+// in dl_iterate_phdr() forever.
+// Luckily, (a) the lock is reentrant and (b) libc can't distinguish between the
+// tracer task and the thread that spawned it. Thus, if we run the tracer task
+// while holding the libdl lock in the parent thread, we can safely reenter it
+// in the tracer. The solution is to run stoptheworld from a dl_iterate_phdr()
+// callback in the parent thread.
+void DoStopTheWorld(StopTheWorldCallback callback, void *argument) {
+  DoStopTheWorldParam param = {callback, argument};
+  dl_iterate_phdr(DoStopTheWorldCallback, &param);
+}
+
+} // namespace __lsan
+
+#endif // CAN_SANITIZE_LEAKS && SANITIZER_LINUX

external/llvm-project/compiler-rt/lib/lsan/lsan_common_mac.cc

@@ -0,0 +1,199 @@
+//=-- lsan_common_mac.cc --------------------------------------------------===//
+//
+//                     The LLVM Compiler Infrastructure
+//
+// This file is distributed under the University of Illinois Open Source
+// License. See LICENSE.TXT for details.
+//
+//===----------------------------------------------------------------------===//
+//
+// This file is a part of LeakSanitizer.
+// Implementation of common leak checking functionality. Darwin-specific code.
+//
+//===----------------------------------------------------------------------===//
+
+#include "sanitizer_common/sanitizer_platform.h"
+#include "lsan_common.h"
+
+#if CAN_SANITIZE_LEAKS && SANITIZER_MAC
+
+#include "sanitizer_common/sanitizer_allocator_internal.h"
+#include "lsan_allocator.h"
+
+#include <pthread.h>
+
+#include <mach/mach.h>
+
+namespace __lsan {
+
+typedef struct {
+  int disable_counter;
+  u32 current_thread_id;
+  AllocatorCache cache;
+} thread_local_data_t;
+
+static pthread_key_t key;
+static pthread_once_t key_once = PTHREAD_ONCE_INIT;
+
+// The main thread destructor requires the current thread id,
+// so we can't destroy it until it's been used and reset to invalid tid
+void restore_tid_data(void *ptr) {
+  thread_local_data_t *data = (thread_local_data_t *)ptr;
+  if (data->current_thread_id != kInvalidTid)
+    pthread_setspecific(key, data);
+}
+
+static void make_tls_key() {
+  CHECK_EQ(pthread_key_create(&key, restore_tid_data), 0);
+}
+
+static thread_local_data_t *get_tls_val(bool alloc) {
+  pthread_once(&key_once, make_tls_key);
+
+  thread_local_data_t *ptr = (thread_local_data_t *)pthread_getspecific(key);
+  if (ptr == NULL && alloc) {
+    ptr = (thread_local_data_t *)InternalAlloc(sizeof(*ptr));
+    ptr->disable_counter = 0;
+    ptr->current_thread_id = kInvalidTid;
+    ptr->cache = AllocatorCache();
+    pthread_setspecific(key, ptr);
+  }
+
+  return ptr;
+}
+
+bool DisabledInThisThread() {
+  thread_local_data_t *data = get_tls_val(false);
+  return data ? data->disable_counter > 0 : false;
+}
+
+void DisableInThisThread() { ++get_tls_val(true)->disable_counter; }
+
+void EnableInThisThread() {
+  int *disable_counter = &get_tls_val(true)->disable_counter;
+  if (*disable_counter == 0) {
+    DisableCounterUnderflow();
+  }
+  --*disable_counter;
+}
+
+u32 GetCurrentThread() {
+  thread_local_data_t *data = get_tls_val(false);
+  return data ? data->current_thread_id : kInvalidTid;
+}
+
+void SetCurrentThread(u32 tid) { get_tls_val(true)->current_thread_id = tid; }
+
+AllocatorCache *GetAllocatorCache() { return &get_tls_val(true)->cache; }
+
+LoadedModule *GetLinker() { return nullptr; }
+
+// Required on Linux for initialization of TLS behavior, but should not be
+// required on Darwin.
+void InitializePlatformSpecificModules() {}
+
+// Sections which can't contain contain global pointers. This list errs on the
+// side of caution to avoid false positives, at the expense of performance.
+//
+// Other potentially safe sections include:
+// __all_image_info, __crash_info, __const, __got, __interpose, __objc_msg_break
+//
+// Sections which definitely cannot be included here are:
+// __objc_data, __objc_const, __data, __bss, __common, __thread_data,
+// __thread_bss, __thread_vars, __objc_opt_rw, __objc_opt_ptrs
+static const char *kSkippedSecNames[] = {
+    "__cfstring",       "__la_symbol_ptr",  "__mod_init_func",
+    "__mod_term_func",  "__nl_symbol_ptr",  "__objc_classlist",
+    "__objc_classrefs", "__objc_imageinfo", "__objc_nlclslist",
+    "__objc_protolist", "__objc_selrefs",   "__objc_superrefs"};
+
+// Scans global variables for heap pointers.
+void ProcessGlobalRegions(Frontier *frontier) {
+  for (auto name : kSkippedSecNames) CHECK(ARRAY_SIZE(name) < kMaxSegName);
+
+  MemoryMappingLayout memory_mapping(false);
+  InternalMmapVector<LoadedModule> modules(/*initial_capacity*/ 128);
+  memory_mapping.DumpListOfModules(&modules);
+  for (uptr i = 0; i < modules.size(); ++i) {
+    // Even when global scanning is disabled, we still need to scan
+    // system libraries for stashed pointers
+    if (!flags()->use_globals && modules[i].instrumented()) continue;
+
+    for (const __sanitizer::LoadedModule::AddressRange &range :
+         modules[i].ranges()) {
+      // Sections storing global variables are writable and non-executable
+      if (range.executable || !range.writable) continue;
+
+      for (auto name : kSkippedSecNames) {
+        if (!internal_strcmp(range.name, name)) continue;
+      }
+
+      ScanGlobalRange(range.beg, range.end, frontier);
+    }
+  }
+}
+
+void ProcessPlatformSpecificAllocations(Frontier *frontier) {
+  mach_port_name_t port;
+  if (task_for_pid(mach_task_self(), internal_getpid(), &port)
+      != KERN_SUCCESS) {
+    return;
+  }
+
+  unsigned depth = 1;
+  vm_size_t size = 0;
+  vm_address_t address = 0;
+  kern_return_t err = KERN_SUCCESS;
+  mach_msg_type_number_t count = VM_REGION_SUBMAP_INFO_COUNT_64;
+
+  InternalMmapVector<RootRegion> const *root_regions = GetRootRegions();
+
+  while (err == KERN_SUCCESS) {
+    struct vm_region_submap_info_64 info;
+    err = vm_region_recurse_64(port, &address, &size, &depth,
+                               (vm_region_info_t)&info, &count);
+
+    uptr end_address = address + size;
+
+    // libxpc stashes some pointers in the Kernel Alloc Once page,
+    // make sure not to report those as leaks.
+    if (info.user_tag == VM_MEMORY_OS_ALLOC_ONCE) {
+      ScanRangeForPointers(address, end_address, frontier, "GLOBAL",
+                           kReachable);
+
+      // Recursing over the full memory map is very slow, break out
+      // early if we don't need the full iteration.
+      if (!flags()->use_root_regions || !root_regions->size())
+        break;
+    }
+
+    // This additional root region scan is required on Darwin in order to
+    // detect root regions contained within mmap'd memory regions, because
+    // the Darwin implementation of sanitizer_procmaps traverses images
+    // as loaded by dyld, and not the complete set of all memory regions.
+    //
+    // TODO(fjricci) - remove this once sanitizer_procmaps_mac has the same
+    // behavior as sanitizer_procmaps_linux and traverses all memory regions
+    if (flags()->use_root_regions) {
+      for (uptr i = 0; i < root_regions->size(); i++) {
+        ScanRootRegion(frontier, (*root_regions)[i], address, end_address,
+                       info.protection & kProtectionRead);
+      }
+    }
+
+    address = end_address;
+  }
+}
+
+// On darwin, we can intercept _exit gracefully, and return a failing exit code
+// if required at that point. Calling Die() here is undefined behavior and
+// causes rare race conditions.
+void HandleLeaks() {}
+
+void DoStopTheWorld(StopTheWorldCallback callback, void *argument) {
+  StopTheWorld(callback, argument);
+}
+
+} // namespace __lsan
+
+#endif // CAN_SANITIZE_LEAKS && SANITIZER_MAC

external/llvm-project/compiler-rt/lib/lsan/lsan_flags.inc

@@ -0,0 +1,47 @@
+//===-- lsan_flags.inc ------------------------------------------*- C++ -*-===//
+//
+//                     The LLVM Compiler Infrastructure
+//
+// This file is distributed under the University of Illinois Open Source
+// License. See LICENSE.TXT for details.
+//
+//===----------------------------------------------------------------------===//
+//
+// LSan runtime flags.
+//
+//===----------------------------------------------------------------------===//
+#ifndef LSAN_FLAG
+# error "Define LSAN_FLAG prior to including this file!"
+#endif
+
+// LSAN_FLAG(Type, Name, DefaultValue, Description)
+// See COMMON_FLAG in sanitizer_flags.inc for more details.
+
+LSAN_FLAG(bool, report_objects, false,
+          "Print addresses of leaked objects after main leak report.")
+LSAN_FLAG(
+    int, resolution, 0,
+    "Aggregate two objects into one leak if this many stack frames match. If "
+    "zero, the entire stack trace must match.")
+LSAN_FLAG(int, max_leaks, 0, "The number of leaks reported.")
+
+// Flags controlling the root set of reachable memory.
+LSAN_FLAG(bool, use_globals, true,
+          "Root set: include global variables (.data and .bss)")
+LSAN_FLAG(bool, use_stacks, true, "Root set: include thread stacks")
+LSAN_FLAG(bool, use_registers, true, "Root set: include thread registers")
+LSAN_FLAG(bool, use_tls, true,
+          "Root set: include TLS and thread-specific storage")
+LSAN_FLAG(bool, use_root_regions, true,
+          "Root set: include regions added via __lsan_register_root_region().")
+LSAN_FLAG(bool, use_ld_allocations, true,
+          "Root set: mark as reachable all allocations made from dynamic "
+          "linker. This was the old way to handle dynamic TLS, and will "
+          "be removed soon. Do not use this flag.")
+
+LSAN_FLAG(bool, use_unaligned, false, "Consider unaligned pointers valid.")
+LSAN_FLAG(bool, use_poisoned, false,
+          "Consider pointers found in poisoned memory to be valid.")
+LSAN_FLAG(bool, log_pointers, false, "Debug logging")
+LSAN_FLAG(bool, log_threads, false, "Debug logging")
+LSAN_FLAG(const char *, suppressions, "", "Suppressions file name.")

external/llvm-project/compiler-rt/lib/lsan/lsan_interceptors.cc

@@ -0,0 +1,455 @@
+//=-- lsan_interceptors.cc ------------------------------------------------===//
+//
+//                     The LLVM Compiler Infrastructure
+//
+// This file is distributed under the University of Illinois Open Source
+// License. See LICENSE.TXT for details.
+//
+//===----------------------------------------------------------------------===//
+//
+// This file is a part of LeakSanitizer.
+// Interceptors for standalone LSan.
+//
+//===----------------------------------------------------------------------===//
+
+#include "interception/interception.h"
+#include "sanitizer_common/sanitizer_allocator.h"
+#include "sanitizer_common/sanitizer_atomic.h"
+#include "sanitizer_common/sanitizer_common.h"
+#include "sanitizer_common/sanitizer_flags.h"
+#include "sanitizer_common/sanitizer_internal_defs.h"
+#include "sanitizer_common/sanitizer_linux.h"
+#include "sanitizer_common/sanitizer_platform_interceptors.h"
+#include "sanitizer_common/sanitizer_platform_limits_netbsd.h"
+#include "sanitizer_common/sanitizer_platform_limits_posix.h"
+#include "sanitizer_common/sanitizer_posix.h"
+#include "sanitizer_common/sanitizer_tls_get_addr.h"
+#include "lsan.h"
+#include "lsan_allocator.h"
+#include "lsan_common.h"
+#include "lsan_thread.h"
+
+#include <stddef.h>
+
+using namespace __lsan;
+
+extern "C" {
+int pthread_attr_init(void *attr);
+int pthread_attr_destroy(void *attr);
+int pthread_attr_getdetachstate(void *attr, int *v);
+int pthread_key_create(unsigned *key, void (*destructor)(void* v));
+int pthread_setspecific(unsigned key, const void *v);
+}
+
+///// Malloc/free interceptors. /////
+
+namespace std {
+  struct nothrow_t;
+  enum class align_val_t: size_t;
+}
+
+#if !SANITIZER_MAC
+INTERCEPTOR(void*, malloc, uptr size) {
+  ENSURE_LSAN_INITED;
+  GET_STACK_TRACE_MALLOC;
+  return lsan_malloc(size, stack);
+}
+
+INTERCEPTOR(void, free, void *p) {
+  ENSURE_LSAN_INITED;
+  lsan_free(p);
+}
+
+INTERCEPTOR(void*, calloc, uptr nmemb, uptr size) {
+  if (lsan_init_is_running) {
+    // Hack: dlsym calls calloc before REAL(calloc) is retrieved from dlsym.
+    const uptr kCallocPoolSize = 1024;
+    static uptr calloc_memory_for_dlsym[kCallocPoolSize];
+    static uptr allocated;
+    uptr size_in_words = ((nmemb * size) + kWordSize - 1) / kWordSize;
+    void *mem = (void*)&calloc_memory_for_dlsym[allocated];
+    allocated += size_in_words;
+    CHECK(allocated < kCallocPoolSize);
+    return mem;
+  }
+  ENSURE_LSAN_INITED;
+  GET_STACK_TRACE_MALLOC;
+  return lsan_calloc(nmemb, size, stack);
+}
+
+INTERCEPTOR(void*, realloc, void *q, uptr size) {
+  ENSURE_LSAN_INITED;
+  GET_STACK_TRACE_MALLOC;
+  return lsan_realloc(q, size, stack);
+}
+
+INTERCEPTOR(int, posix_memalign, void **memptr, uptr alignment, uptr size) {
+  ENSURE_LSAN_INITED;
+  GET_STACK_TRACE_MALLOC;
+  *memptr = lsan_memalign(alignment, size, stack);
+  // FIXME: Return ENOMEM if user requested more than max alloc size.
+  return 0;
+}
+
+INTERCEPTOR(void*, valloc, uptr size) {
+  ENSURE_LSAN_INITED;
+  GET_STACK_TRACE_MALLOC;
+  return lsan_valloc(size, stack);
+}
+#endif
+
+#if SANITIZER_INTERCEPT_MEMALIGN
+INTERCEPTOR(void*, memalign, uptr alignment, uptr size) {
+  ENSURE_LSAN_INITED;
+  GET_STACK_TRACE_MALLOC;
+  return lsan_memalign(alignment, size, stack);
+}
+#define LSAN_MAYBE_INTERCEPT_MEMALIGN INTERCEPT_FUNCTION(memalign)
+
+INTERCEPTOR(void *, __libc_memalign, uptr alignment, uptr size) {
+  ENSURE_LSAN_INITED;
+  GET_STACK_TRACE_MALLOC;
+  void *res = lsan_memalign(alignment, size, stack);
+  DTLS_on_libc_memalign(res, size);
+  return res;
+}
+#define LSAN_MAYBE_INTERCEPT___LIBC_MEMALIGN INTERCEPT_FUNCTION(__libc_memalign)
+#else
+#define LSAN_MAYBE_INTERCEPT_MEMALIGN
+#define LSAN_MAYBE_INTERCEPT___LIBC_MEMALIGN
+#endif // SANITIZER_INTERCEPT_MEMALIGN
+
+#if SANITIZER_INTERCEPT_ALIGNED_ALLOC
+INTERCEPTOR(void*, aligned_alloc, uptr alignment, uptr size) {
+  ENSURE_LSAN_INITED;
+  GET_STACK_TRACE_MALLOC;
+  return lsan_memalign(alignment, size, stack);
+}
+#define LSAN_MAYBE_INTERCEPT_ALIGNED_ALLOC INTERCEPT_FUNCTION(aligned_alloc)
+#else
+#define LSAN_MAYBE_INTERCEPT_ALIGNED_ALLOC
+#endif
+
+#if SANITIZER_INTERCEPT_MALLOC_USABLE_SIZE
+INTERCEPTOR(uptr, malloc_usable_size, void *ptr) {
+  ENSURE_LSAN_INITED;
+  return GetMallocUsableSize(ptr);
+}
+#define LSAN_MAYBE_INTERCEPT_MALLOC_USABLE_SIZE \
+        INTERCEPT_FUNCTION(malloc_usable_size)
+#else
+#define LSAN_MAYBE_INTERCEPT_MALLOC_USABLE_SIZE
+#endif
+
+#if SANITIZER_INTERCEPT_MALLOPT_AND_MALLINFO
+struct fake_mallinfo {
+  int x[10];
+};
+
+INTERCEPTOR(struct fake_mallinfo, mallinfo, void) {
+  struct fake_mallinfo res;
+  internal_memset(&res, 0, sizeof(res));
+  return res;
+}
+#define LSAN_MAYBE_INTERCEPT_MALLINFO INTERCEPT_FUNCTION(mallinfo)
+
+INTERCEPTOR(int, mallopt, int cmd, int value) {
+  return -1;
+}
+#define LSAN_MAYBE_INTERCEPT_MALLOPT INTERCEPT_FUNCTION(mallopt)
+#else
+#define LSAN_MAYBE_INTERCEPT_MALLINFO
+#define LSAN_MAYBE_INTERCEPT_MALLOPT
+#endif // SANITIZER_INTERCEPT_MALLOPT_AND_MALLINFO
+
+#if SANITIZER_INTERCEPT_PVALLOC
+INTERCEPTOR(void*, pvalloc, uptr size) {
+  ENSURE_LSAN_INITED;
+  GET_STACK_TRACE_MALLOC;
+  uptr PageSize = GetPageSizeCached();
+  size = RoundUpTo(size, PageSize);
+  if (size == 0) {
+    // pvalloc(0) should allocate one page.
+    size = PageSize;
+  }
+  return Allocate(stack, size, GetPageSizeCached(), kAlwaysClearMemory);
+}
+#define LSAN_MAYBE_INTERCEPT_PVALLOC INTERCEPT_FUNCTION(pvalloc)
+#else
+#define LSAN_MAYBE_INTERCEPT_PVALLOC
+#endif // SANITIZER_INTERCEPT_PVALLOC
+
+#if SANITIZER_INTERCEPT_CFREE
+INTERCEPTOR(void, cfree, void *p) ALIAS(WRAPPER_NAME(free));
+#define LSAN_MAYBE_INTERCEPT_CFREE INTERCEPT_FUNCTION(cfree)
+#else
+#define LSAN_MAYBE_INTERCEPT_CFREE
+#endif // SANITIZER_INTERCEPT_CFREE
+
+#if SANITIZER_INTERCEPT_MCHECK_MPROBE
+INTERCEPTOR(int, mcheck, void (*abortfunc)(int mstatus)) {
+  return 0;
+}
+
+INTERCEPTOR(int, mcheck_pedantic, void (*abortfunc)(int mstatus)) {
+  return 0;
+}
+
+INTERCEPTOR(int, mprobe, void *ptr) {
+  return 0;
+}
+#endif // SANITIZER_INTERCEPT_MCHECK_MPROBE
+
+
+// TODO(alekseys): throw std::bad_alloc instead of dying on OOM.
+#define OPERATOR_NEW_BODY(nothrow)                         \
+  ENSURE_LSAN_INITED;                                      \
+  GET_STACK_TRACE_MALLOC;                                  \
+  void *res = lsan_malloc(size, stack);                    \
+  if (!nothrow && UNLIKELY(!res)) DieOnFailure::OnOOM();   \
+  return res;
+#define OPERATOR_NEW_BODY_ALIGN(nothrow)                   \
+  ENSURE_LSAN_INITED;                                      \
+  GET_STACK_TRACE_MALLOC;                                  \
+  void *res = lsan_memalign((uptr)align, size, stack);     \
+  if (!nothrow && UNLIKELY(!res)) DieOnFailure::OnOOM();   \
+  return res;
+
+#define OPERATOR_DELETE_BODY \
+  ENSURE_LSAN_INITED;        \
+  lsan_free(ptr);
+
+// On OS X it's not enough to just provide our own 'operator new' and
+// 'operator delete' implementations, because they're going to be in the runtime
+// dylib, and the main executable will depend on both the runtime dylib and
+// libstdc++, each of has its implementation of new and delete.
+// To make sure that C++ allocation/deallocation operators are overridden on
+// OS X we need to intercept them using their mangled names.
+#if !SANITIZER_MAC
+
+INTERCEPTOR_ATTRIBUTE
+void *operator new(size_t size) { OPERATOR_NEW_BODY(false /*nothrow*/); }
+INTERCEPTOR_ATTRIBUTE
+void *operator new[](size_t size) { OPERATOR_NEW_BODY(false /*nothrow*/); }
+INTERCEPTOR_ATTRIBUTE
+void *operator new(size_t size, std::nothrow_t const&)
+{ OPERATOR_NEW_BODY(true /*nothrow*/); }
+INTERCEPTOR_ATTRIBUTE
+void *operator new[](size_t size, std::nothrow_t const&)
+{ OPERATOR_NEW_BODY(true /*nothrow*/); }
+INTERCEPTOR_ATTRIBUTE
+void *operator new(size_t size, std::align_val_t align)
+{ OPERATOR_NEW_BODY_ALIGN(false /*nothrow*/); }
+INTERCEPTOR_ATTRIBUTE
+void *operator new[](size_t size, std::align_val_t align)
+{ OPERATOR_NEW_BODY_ALIGN(false /*nothrow*/); }
+INTERCEPTOR_ATTRIBUTE
+void *operator new(size_t size, std::align_val_t align, std::nothrow_t const&)
+{ OPERATOR_NEW_BODY_ALIGN(true /*nothrow*/); }
+INTERCEPTOR_ATTRIBUTE
+void *operator new[](size_t size, std::align_val_t align, std::nothrow_t const&)
+{ OPERATOR_NEW_BODY_ALIGN(true /*nothrow*/); }
+
+INTERCEPTOR_ATTRIBUTE
+void operator delete(void *ptr) NOEXCEPT { OPERATOR_DELETE_BODY; }
+INTERCEPTOR_ATTRIBUTE
+void operator delete[](void *ptr) NOEXCEPT { OPERATOR_DELETE_BODY; }
+INTERCEPTOR_ATTRIBUTE
+void operator delete(void *ptr, std::nothrow_t const&) { OPERATOR_DELETE_BODY; }
+INTERCEPTOR_ATTRIBUTE
+void operator delete[](void *ptr, std::nothrow_t const &)
+{ OPERATOR_DELETE_BODY; }
+INTERCEPTOR_ATTRIBUTE
+void operator delete(void *ptr, size_t size) NOEXCEPT
+{ OPERATOR_DELETE_BODY; }
+INTERCEPTOR_ATTRIBUTE
+void operator delete[](void *ptr, size_t size) NOEXCEPT
+{ OPERATOR_DELETE_BODY; }
+INTERCEPTOR_ATTRIBUTE
+void operator delete(void *ptr, std::align_val_t) NOEXCEPT
+{ OPERATOR_DELETE_BODY; }
+INTERCEPTOR_ATTRIBUTE
+void operator delete[](void *ptr, std::align_val_t) NOEXCEPT
+{ OPERATOR_DELETE_BODY; }
+INTERCEPTOR_ATTRIBUTE
+void operator delete(void *ptr, std::align_val_t, std::nothrow_t const&)
+{ OPERATOR_DELETE_BODY; }
+INTERCEPTOR_ATTRIBUTE
+void operator delete[](void *ptr, std::align_val_t, std::nothrow_t const&)
+{ OPERATOR_DELETE_BODY; }
+INTERCEPTOR_ATTRIBUTE
+void operator delete(void *ptr, size_t size, std::align_val_t) NOEXCEPT
+{ OPERATOR_DELETE_BODY; }
+INTERCEPTOR_ATTRIBUTE
+void operator delete[](void *ptr, size_t size, std::align_val_t) NOEXCEPT
+{ OPERATOR_DELETE_BODY; }
+
+#else  // SANITIZER_MAC
+
+INTERCEPTOR(void *, _Znwm, size_t size)
+{ OPERATOR_NEW_BODY(false /*nothrow*/); }
+INTERCEPTOR(void *, _Znam, size_t size)
+{ OPERATOR_NEW_BODY(false /*nothrow*/); }
+INTERCEPTOR(void *, _ZnwmRKSt9nothrow_t, size_t size, std::nothrow_t const&)
+{ OPERATOR_NEW_BODY(true /*nothrow*/); }
+INTERCEPTOR(void *, _ZnamRKSt9nothrow_t, size_t size, std::nothrow_t const&)
+{ OPERATOR_NEW_BODY(true /*nothrow*/); }
+
+INTERCEPTOR(void, _ZdlPv, void *ptr)
+{ OPERATOR_DELETE_BODY; }
+INTERCEPTOR(void, _ZdaPv, void *ptr)
+{ OPERATOR_DELETE_BODY; }
+INTERCEPTOR(void, _ZdlPvRKSt9nothrow_t, void *ptr, std::nothrow_t const&)
+{ OPERATOR_DELETE_BODY; }
+INTERCEPTOR(void, _ZdaPvRKSt9nothrow_t, void *ptr, std::nothrow_t const&)
+{ OPERATOR_DELETE_BODY; }
+
+#endif  // !SANITIZER_MAC
+
+
+///// Thread initialization and finalization. /////
+
+#if !SANITIZER_NETBSD
+static unsigned g_thread_finalize_key;
+
+static void thread_finalize(void *v) {
+  uptr iter = (uptr)v;
+  if (iter > 1) {
+    if (pthread_setspecific(g_thread_finalize_key, (void*)(iter - 1))) {
+      Report("LeakSanitizer: failed to set thread key.\n");
+      Die();
+    }
+    return;
+  }
+  ThreadFinish();
+}
+#endif
+
+#if SANITIZER_NETBSD
+INTERCEPTOR(void, _lwp_exit) {
+  ENSURE_LSAN_INITED;
+  ThreadFinish();
+  REAL(_lwp_exit)();
+}
+#define LSAN_MAYBE_INTERCEPT__LWP_EXIT INTERCEPT_FUNCTION(_lwp_exit)
+#else
+#define LSAN_MAYBE_INTERCEPT__LWP_EXIT
+#endif
+
+struct ThreadParam {
+  void *(*callback)(void *arg);
+  void *param;
+  atomic_uintptr_t tid;
+};
+
+extern "C" void *__lsan_thread_start_func(void *arg) {
+  ThreadParam *p = (ThreadParam*)arg;
+  void* (*callback)(void *arg) = p->callback;
+  void *param = p->param;
+  // Wait until the last iteration to maximize the chance that we are the last
+  // destructor to run.
+#if !SANITIZER_NETBSD
+  if (pthread_setspecific(g_thread_finalize_key,
+                          (void*)GetPthreadDestructorIterations())) {
+    Report("LeakSanitizer: failed to set thread key.\n");
+    Die();
+  }
+#endif
+  int tid = 0;
+  while ((tid = atomic_load(&p->tid, memory_order_acquire)) == 0)
+    internal_sched_yield();
+  SetCurrentThread(tid);
+  ThreadStart(tid, GetTid());
+  atomic_store(&p->tid, 0, memory_order_release);
+  return callback(param);
+}
+
+INTERCEPTOR(int, pthread_create, void *th, void *attr,
+            void *(*callback)(void *), void *param) {
+  ENSURE_LSAN_INITED;
+  EnsureMainThreadIDIsCorrect();
+  __sanitizer_pthread_attr_t myattr;
+  if (!attr) {
+    pthread_attr_init(&myattr);
+    attr = &myattr;
+  }
+  AdjustStackSize(attr);
+  int detached = 0;
+  pthread_attr_getdetachstate(attr, &detached);
+  ThreadParam p;
+  p.callback = callback;
+  p.param = param;
+  atomic_store(&p.tid, 0, memory_order_relaxed);
+  int res;
+  {
+    // Ignore all allocations made by pthread_create: thread stack/TLS may be
+    // stored by pthread for future reuse even after thread destruction, and
+    // the linked list it's stored in doesn't even hold valid pointers to the
+    // objects, the latter are calculated by obscure pointer arithmetic.
+    ScopedInterceptorDisabler disabler;
+    res = REAL(pthread_create)(th, attr, __lsan_thread_start_func, &p);
+  }
+  if (res == 0) {
+    int tid = ThreadCreate(GetCurrentThread(), *(uptr *)th,
+                           IsStateDetached(detached));
+    CHECK_NE(tid, 0);
+    atomic_store(&p.tid, tid, memory_order_release);
+    while (atomic_load(&p.tid, memory_order_acquire) != 0)
+      internal_sched_yield();
+  }
+  if (attr == &myattr)
+    pthread_attr_destroy(&myattr);
+  return res;
+}
+
+INTERCEPTOR(int, pthread_join, void *th, void **ret) {
+  ENSURE_LSAN_INITED;
+  int tid = ThreadTid((uptr)th);
+  int res = REAL(pthread_join)(th, ret);
+  if (res == 0)
+    ThreadJoin(tid);
+  return res;
+}
+
+INTERCEPTOR(void, _exit, int status) {
+  if (status == 0 && HasReportedLeaks()) status = common_flags()->exitcode;
+  REAL(_exit)(status);
+}
+
+#define COMMON_INTERCEPT_FUNCTION(name) INTERCEPT_FUNCTION(name)
+#include "sanitizer_common/sanitizer_signal_interceptors.inc"
+
+namespace __lsan {
+
+void InitializeInterceptors() {
+  InitializeSignalInterceptors();
+
+  INTERCEPT_FUNCTION(malloc);
+  INTERCEPT_FUNCTION(free);
+  LSAN_MAYBE_INTERCEPT_CFREE;
+  INTERCEPT_FUNCTION(calloc);
+  INTERCEPT_FUNCTION(realloc);
+  LSAN_MAYBE_INTERCEPT_MEMALIGN;
+  LSAN_MAYBE_INTERCEPT___LIBC_MEMALIGN;
+  LSAN_MAYBE_INTERCEPT_ALIGNED_ALLOC;
+  INTERCEPT_FUNCTION(posix_memalign);
+  INTERCEPT_FUNCTION(valloc);
+  LSAN_MAYBE_INTERCEPT_PVALLOC;
+  LSAN_MAYBE_INTERCEPT_MALLOC_USABLE_SIZE;
+  LSAN_MAYBE_INTERCEPT_MALLINFO;
+  LSAN_MAYBE_INTERCEPT_MALLOPT;
+  INTERCEPT_FUNCTION(pthread_create);
+  INTERCEPT_FUNCTION(pthread_join);
+  INTERCEPT_FUNCTION(_exit);
+
+  LSAN_MAYBE_INTERCEPT__LWP_EXIT;
+
+#if !SANITIZER_NETBSD
+  if (pthread_key_create(&g_thread_finalize_key, &thread_finalize)) {
+    Report("LeakSanitizer: failed to create thread key.\n");
+    Die();
+  }
+#endif
+}
+
+} // namespace __lsan

external/llvm-project/compiler-rt/lib/lsan/lsan_linux.cc

@@ -0,0 +1,33 @@
+//=-- lsan_linux.cc -------------------------------------------------------===//
+//
+//                     The LLVM Compiler Infrastructure
+//
+// This file is distributed under the University of Illinois Open Source
+// License. See LICENSE.TXT for details.
+//
+//===----------------------------------------------------------------------===//
+//
+// This file is a part of LeakSanitizer. Linux-specific code.
+//
+//===----------------------------------------------------------------------===//
+
+#include "sanitizer_common/sanitizer_platform.h"
+
+#if SANITIZER_LINUX
+
+#include "lsan_allocator.h"
+
+namespace __lsan {
+
+static THREADLOCAL u32 current_thread_tid = kInvalidTid;
+u32 GetCurrentThread() { return current_thread_tid; }
+void SetCurrentThread(u32 tid) { current_thread_tid = tid; }
+
+static THREADLOCAL AllocatorCache allocator_cache;
+AllocatorCache *GetAllocatorCache() { return &allocator_cache; }
+
+void ReplaceSystemMalloc() {}
+
+} // namespace __lsan
+
+#endif // SANITIZER_LINUX

external/llvm-project/compiler-rt/lib/lsan/lsan_mac.cc

@@ -0,0 +1,192 @@
+//===-- lsan_mac.cc -------------------------------------------------------===//
+//
+//                     The LLVM Compiler Infrastructure
+//
+// This file is distributed under the University of Illinois Open Source
+// License. See LICENSE.TXT for details.
+//
+//===----------------------------------------------------------------------===//
+//
+// This file is a part of LeakSanitizer, a memory leak checker.
+//
+// Mac-specific details.
+//===----------------------------------------------------------------------===//
+
+#include "sanitizer_common/sanitizer_platform.h"
+#if SANITIZER_MAC
+
+#include "interception/interception.h"
+#include "lsan.h"
+#include "lsan_allocator.h"
+#include "lsan_thread.h"
+
+#include <pthread.h>
+
+namespace __lsan {
+// Support for the following functions from libdispatch on Mac OS:
+//   dispatch_async_f()
+//   dispatch_async()
+//   dispatch_sync_f()
+//   dispatch_sync()
+//   dispatch_after_f()
+//   dispatch_after()
+//   dispatch_group_async_f()
+//   dispatch_group_async()
+// TODO(glider): libdispatch API contains other functions that we don't support
+// yet.
+//
+// dispatch_sync() and dispatch_sync_f() are synchronous, although chances are
+// they can cause jobs to run on a thread different from the current one.
+// TODO(glider): if so, we need a test for this (otherwise we should remove
+// them).
+//
+// The following functions use dispatch_barrier_async_f() (which isn't a library
+// function but is exported) and are thus supported:
+//   dispatch_source_set_cancel_handler_f()
+//   dispatch_source_set_cancel_handler()
+//   dispatch_source_set_event_handler_f()
+//   dispatch_source_set_event_handler()
+//
+// The reference manual for Grand Central Dispatch is available at
+//   http://developer.apple.com/library/mac/#documentation/Performance/Reference/GCD_libdispatch_Ref/Reference/reference.html
+// The implementation details are at
+//   http://libdispatch.macosforge.org/trac/browser/trunk/src/queue.c
+
+typedef void *dispatch_group_t;
+typedef void *dispatch_queue_t;
+typedef void *dispatch_source_t;
+typedef u64 dispatch_time_t;
+typedef void (*dispatch_function_t)(void *block);
+typedef void *(*worker_t)(void *block);
+
+// A wrapper for the ObjC blocks used to support libdispatch.
+typedef struct {
+  void *block;
+  dispatch_function_t func;
+  u32 parent_tid;
+} lsan_block_context_t;
+
+ALWAYS_INLINE
+void lsan_register_worker_thread(int parent_tid) {
+  if (GetCurrentThread() == kInvalidTid) {
+    u32 tid = ThreadCreate(parent_tid, 0, true);
+    ThreadStart(tid, GetTid());
+    SetCurrentThread(tid);
+  }
+}
+
+// For use by only those functions that allocated the context via
+// alloc_lsan_context().
+extern "C" void lsan_dispatch_call_block_and_release(void *block) {
+  lsan_block_context_t *context = (lsan_block_context_t *)block;
+  VReport(2,
+          "lsan_dispatch_call_block_and_release(): "
+          "context: %p, pthread_self: %p\n",
+          block, pthread_self());
+  lsan_register_worker_thread(context->parent_tid);
+  // Call the original dispatcher for the block.
+  context->func(context->block);
+  lsan_free(context);
+}
+
+}  // namespace __lsan
+
+using namespace __lsan;  // NOLINT
+
+// Wrap |ctxt| and |func| into an lsan_block_context_t.
+// The caller retains control of the allocated context.
+extern "C" lsan_block_context_t *alloc_lsan_context(void *ctxt,
+                                                    dispatch_function_t func) {
+  GET_STACK_TRACE_THREAD;
+  lsan_block_context_t *lsan_ctxt =
+      (lsan_block_context_t *)lsan_malloc(sizeof(lsan_block_context_t), stack);
+  lsan_ctxt->block = ctxt;
+  lsan_ctxt->func = func;
+  lsan_ctxt->parent_tid = GetCurrentThread();
+  return lsan_ctxt;
+}
+
+// Define interceptor for dispatch_*_f function with the three most common
+// parameters: dispatch_queue_t, context, dispatch_function_t.
+#define INTERCEPT_DISPATCH_X_F_3(dispatch_x_f)                        \
+  INTERCEPTOR(void, dispatch_x_f, dispatch_queue_t dq, void *ctxt,    \
+              dispatch_function_t func) {                             \
+    lsan_block_context_t *lsan_ctxt = alloc_lsan_context(ctxt, func); \
+    return REAL(dispatch_x_f)(dq, (void *)lsan_ctxt,                  \
+                              lsan_dispatch_call_block_and_release);  \
+  }
+
+INTERCEPT_DISPATCH_X_F_3(dispatch_async_f)
+INTERCEPT_DISPATCH_X_F_3(dispatch_sync_f)
+INTERCEPT_DISPATCH_X_F_3(dispatch_barrier_async_f)
+
+INTERCEPTOR(void, dispatch_after_f, dispatch_time_t when, dispatch_queue_t dq,
+            void *ctxt, dispatch_function_t func) {
+  lsan_block_context_t *lsan_ctxt = alloc_lsan_context(ctxt, func);
+  return REAL(dispatch_after_f)(when, dq, (void *)lsan_ctxt,
+                                lsan_dispatch_call_block_and_release);
+}
+
+INTERCEPTOR(void, dispatch_group_async_f, dispatch_group_t group,
+            dispatch_queue_t dq, void *ctxt, dispatch_function_t func) {
+  lsan_block_context_t *lsan_ctxt = alloc_lsan_context(ctxt, func);
+  REAL(dispatch_group_async_f)
+  (group, dq, (void *)lsan_ctxt, lsan_dispatch_call_block_and_release);
+}
+
+#if !defined(MISSING_BLOCKS_SUPPORT)
+extern "C" {
+void dispatch_async(dispatch_queue_t dq, void (^work)(void));
+void dispatch_group_async(dispatch_group_t dg, dispatch_queue_t dq,
+                          void (^work)(void));
+void dispatch_after(dispatch_time_t when, dispatch_queue_t queue,
+                    void (^work)(void));
+void dispatch_source_set_cancel_handler(dispatch_source_t ds,
+                                        void (^work)(void));
+void dispatch_source_set_event_handler(dispatch_source_t ds,
+                                       void (^work)(void));
+}
+
+#define GET_LSAN_BLOCK(work)                 \
+  void (^lsan_block)(void);                  \
+  int parent_tid = GetCurrentThread();       \
+  lsan_block = ^(void) {                     \
+    lsan_register_worker_thread(parent_tid); \
+    work();                                  \
+  }
+
+INTERCEPTOR(void, dispatch_async, dispatch_queue_t dq, void (^work)(void)) {
+  GET_LSAN_BLOCK(work);
+  REAL(dispatch_async)(dq, lsan_block);
+}
+
+INTERCEPTOR(void, dispatch_group_async, dispatch_group_t dg,
+            dispatch_queue_t dq, void (^work)(void)) {
+  GET_LSAN_BLOCK(work);
+  REAL(dispatch_group_async)(dg, dq, lsan_block);
+}
+
+INTERCEPTOR(void, dispatch_after, dispatch_time_t when, dispatch_queue_t queue,
+            void (^work)(void)) {
+  GET_LSAN_BLOCK(work);
+  REAL(dispatch_after)(when, queue, lsan_block);
+}
+
+INTERCEPTOR(void, dispatch_source_set_cancel_handler, dispatch_source_t ds,
+            void (^work)(void)) {
+  if (!work) {
+    REAL(dispatch_source_set_cancel_handler)(ds, work);
+    return;
+  }
+  GET_LSAN_BLOCK(work);
+  REAL(dispatch_source_set_cancel_handler)(ds, lsan_block);
+}
+
+INTERCEPTOR(void, dispatch_source_set_event_handler, dispatch_source_t ds,
+            void (^work)(void)) {
+  GET_LSAN_BLOCK(work);
+  REAL(dispatch_source_set_event_handler)(ds, lsan_block);
+}
+#endif
+
+#endif  // SANITIZER_MAC

external/llvm-project/compiler-rt/lib/lsan/lsan_malloc_mac.cc

@@ -0,0 +1,55 @@
+//===-- lsan_malloc_mac.cc ------------------------------------------------===//
+//
+//                     The LLVM Compiler Infrastructure
+//
+// This file is distributed under the University of Illinois Open Source
+// License. See LICENSE.TXT for details.
+//
+//===----------------------------------------------------------------------===//
+//
+// This file is a part of LeakSanitizer (LSan), a memory leak detector.
+//
+// Mac-specific malloc interception.
+//===----------------------------------------------------------------------===//
+
+#include "sanitizer_common/sanitizer_platform.h"
+#if SANITIZER_MAC
+
+#include "lsan.h"
+#include "lsan_allocator.h"
+#include "lsan_thread.h"
+
+using namespace __lsan;
+#define COMMON_MALLOC_ZONE_NAME "lsan"
+#define COMMON_MALLOC_ENTER() ENSURE_LSAN_INITED
+#define COMMON_MALLOC_SANITIZER_INITIALIZED lsan_inited
+#define COMMON_MALLOC_FORCE_LOCK()
+#define COMMON_MALLOC_FORCE_UNLOCK()
+#define COMMON_MALLOC_MEMALIGN(alignment, size) \
+  GET_STACK_TRACE_MALLOC; \
+  void *p = lsan_memalign(alignment, size, stack)
+#define COMMON_MALLOC_MALLOC(size) \
+  GET_STACK_TRACE_MALLOC; \
+  void *p = lsan_malloc(size, stack)
+#define COMMON_MALLOC_REALLOC(ptr, size) \
+  GET_STACK_TRACE_MALLOC; \
+  void *p = lsan_realloc(ptr, size, stack)
+#define COMMON_MALLOC_CALLOC(count, size) \
+  GET_STACK_TRACE_MALLOC; \
+  void *p = lsan_calloc(count, size, stack)
+#define COMMON_MALLOC_VALLOC(size) \
+  GET_STACK_TRACE_MALLOC; \
+  void *p = lsan_valloc(size, stack)
+#define COMMON_MALLOC_FREE(ptr) \
+  lsan_free(ptr)
+#define COMMON_MALLOC_SIZE(ptr) \
+  uptr size = lsan_mz_size(ptr)
+#define COMMON_MALLOC_FILL_STATS(zone, stats)
+#define COMMON_MALLOC_REPORT_UNKNOWN_REALLOC(ptr, zone_ptr, zone_name) \
+  (void)zone_name; \
+  Report("mz_realloc(%p) -- attempting to realloc unallocated memory.\n", ptr);
+#define COMMON_MALLOC_NAMESPACE __lsan
+
+#include "sanitizer_common/sanitizer_malloc_mac.inc"
+
+#endif // SANITIZER_MAC

external/llvm-project/compiler-rt/lib/lsan/lsan_preinit.cc

@@ -0,0 +1,22 @@
+//===-- lsan_preinit.cc ---------------------------------------------------===//
+//
+//                     The LLVM Compiler Infrastructure
+//
+// This file is distributed under the University of Illinois Open Source
+// License. See LICENSE.TXT for details.
+//
+//===----------------------------------------------------------------------===//
+//
+// This file is a part of LeakSanitizer.
+//
+// Call __lsan_init at the very early stage of process startup.
+//===----------------------------------------------------------------------===//
+
+#include "lsan.h"
+
+#if SANITIZER_CAN_USE_PREINIT_ARRAY
+  // We force __lsan_init to be called before anyone else by placing it into
+  // .preinit_array section.
+  __attribute__((section(".preinit_array"), used))
+  void (*__local_lsan_preinit)(void) = __lsan_init;
+#endif

external/llvm-project/compiler-rt/lib/lsan/lsan_thread.cc

@@ -0,0 +1,158 @@
+//=-- lsan_thread.cc ------------------------------------------------------===//
+//
+//                     The LLVM Compiler Infrastructure
+//
+// This file is distributed under the University of Illinois Open Source
+// License. See LICENSE.TXT for details.
+//
+//===----------------------------------------------------------------------===//
+//
+// This file is a part of LeakSanitizer.
+// See lsan_thread.h for details.
+//
+//===----------------------------------------------------------------------===//
+
+#include "lsan_thread.h"
+
+#include "sanitizer_common/sanitizer_common.h"
+#include "sanitizer_common/sanitizer_placement_new.h"
+#include "sanitizer_common/sanitizer_thread_registry.h"
+#include "sanitizer_common/sanitizer_tls_get_addr.h"
+#include "lsan_allocator.h"
+#include "lsan_common.h"
+
+namespace __lsan {
+
+static ThreadRegistry *thread_registry;
+
+static ThreadContextBase *CreateThreadContext(u32 tid) {
+  void *mem = MmapOrDie(sizeof(ThreadContext), "ThreadContext");
+  return new(mem) ThreadContext(tid);
+}
+
+static const uptr kMaxThreads = 1 << 13;
+static const uptr kThreadQuarantineSize = 64;
+
+void InitializeThreadRegistry() {
+  static ALIGNED(64) char thread_registry_placeholder[sizeof(ThreadRegistry)];
+  thread_registry = new(thread_registry_placeholder)
+    ThreadRegistry(CreateThreadContext, kMaxThreads, kThreadQuarantineSize);
+}
+
+ThreadContext::ThreadContext(int tid)
+    : ThreadContextBase(tid),
+      stack_begin_(0),
+      stack_end_(0),
+      cache_begin_(0),
+      cache_end_(0),
+      tls_begin_(0),
+      tls_end_(0),
+      dtls_(nullptr) {}
+
+struct OnStartedArgs {
+  uptr stack_begin, stack_end,
+       cache_begin, cache_end,
+       tls_begin, tls_end;
+  DTLS *dtls;
+};
+
+void ThreadContext::OnStarted(void *arg) {
+  OnStartedArgs *args = reinterpret_cast<OnStartedArgs *>(arg);
+  stack_begin_ = args->stack_begin;
+  stack_end_ = args->stack_end;
+  tls_begin_ = args->tls_begin;
+  tls_end_ = args->tls_end;
+  cache_begin_ = args->cache_begin;
+  cache_end_ = args->cache_end;
+  dtls_ = args->dtls;
+}
+
+void ThreadContext::OnFinished() {
+  AllocatorThreadFinish();
+  DTLS_Destroy();
+}
+
+u32 ThreadCreate(u32 parent_tid, uptr user_id, bool detached) {
+  return thread_registry->CreateThread(user_id, detached, parent_tid,
+                                       /* arg */ nullptr);
+}
+
+void ThreadStart(u32 tid, tid_t os_id, bool workerthread) {
+  OnStartedArgs args;
+  uptr stack_size = 0;
+  uptr tls_size = 0;
+  GetThreadStackAndTls(tid == 0, &args.stack_begin, &stack_size,
+                       &args.tls_begin, &tls_size);
+  args.stack_end = args.stack_begin + stack_size;
+  args.tls_end = args.tls_begin + tls_size;
+  GetAllocatorCacheRange(&args.cache_begin, &args.cache_end);
+  args.dtls = DTLS_Get();
+  thread_registry->StartThread(tid, os_id, workerthread, &args);
+}
+
+void ThreadFinish() {
+  thread_registry->FinishThread(GetCurrentThread());
+  SetCurrentThread(kInvalidTid);
+}
+
+ThreadContext *CurrentThreadContext() {
+  if (!thread_registry) return nullptr;
+  if (GetCurrentThread() == kInvalidTid)
+    return nullptr;
+  // No lock needed when getting current thread.
+  return (ThreadContext *)thread_registry->GetThreadLocked(GetCurrentThread());
+}
+
+static bool FindThreadByUid(ThreadContextBase *tctx, void *arg) {
+  uptr uid = (uptr)arg;
+  if (tctx->user_id == uid && tctx->status != ThreadStatusInvalid) {
+    return true;
+  }
+  return false;
+}
+
+u32 ThreadTid(uptr uid) {
+  return thread_registry->FindThread(FindThreadByUid, (void*)uid);
+}
+
+void ThreadJoin(u32 tid) {
+  CHECK_NE(tid, kInvalidTid);
+  thread_registry->JoinThread(tid, /* arg */nullptr);
+}
+
+void EnsureMainThreadIDIsCorrect() {
+  if (GetCurrentThread() == 0)
+    CurrentThreadContext()->os_id = GetTid();
+}
+
+///// Interface to the common LSan module. /////
+
+bool GetThreadRangesLocked(tid_t os_id, uptr *stack_begin, uptr *stack_end,
+                           uptr *tls_begin, uptr *tls_end, uptr *cache_begin,
+                           uptr *cache_end, DTLS **dtls) {
+  ThreadContext *context = static_cast<ThreadContext *>(
+      thread_registry->FindThreadContextByOsIDLocked(os_id));
+  if (!context) return false;
+  *stack_begin = context->stack_begin();
+  *stack_end = context->stack_end();
+  *tls_begin = context->tls_begin();
+  *tls_end = context->tls_end();
+  *cache_begin = context->cache_begin();
+  *cache_end = context->cache_end();
+  *dtls = context->dtls();
+  return true;
+}
+
+void ForEachExtraStackRange(tid_t os_id, RangeIteratorCallback callback,
+                            void *arg) {
+}
+
+void LockThreadRegistry() {
+  thread_registry->Lock();
+}
+
+void UnlockThreadRegistry() {
+  thread_registry->Unlock();
+}
+
+} // namespace __lsan

external/llvm-project/compiler-rt/lib/lsan/lsan_thread.h

@@ -0,0 +1,60 @@
+//=-- lsan_thread.h -------------------------------------------------------===//
+//
+//                     The LLVM Compiler Infrastructure
+//
+// This file is distributed under the University of Illinois Open Source
+// License. See LICENSE.TXT for details.
+//
+//===----------------------------------------------------------------------===//
+//
+// This file is a part of LeakSanitizer.
+// Thread registry for standalone LSan.
+//
+//===----------------------------------------------------------------------===//
+
+#ifndef LSAN_THREAD_H
+#define LSAN_THREAD_H
+
+#include "sanitizer_common/sanitizer_thread_registry.h"
+
+namespace __sanitizer {
+struct DTLS;
+}
+
+namespace __lsan {
+
+class ThreadContext : public ThreadContextBase {
+ public:
+  explicit ThreadContext(int tid);
+  void OnStarted(void *arg) override;
+  void OnFinished() override;
+  uptr stack_begin() { return stack_begin_; }
+  uptr stack_end() { return stack_end_; }
+  uptr tls_begin() { return tls_begin_; }
+  uptr tls_end() { return tls_end_; }
+  uptr cache_begin() { return cache_begin_; }
+  uptr cache_end() { return cache_end_; }
+  DTLS *dtls() { return dtls_; }
+
+ private:
+  uptr stack_begin_, stack_end_,
+       cache_begin_, cache_end_,
+       tls_begin_, tls_end_;
+  DTLS *dtls_;
+};
+
+void InitializeThreadRegistry();
+
+void ThreadStart(u32 tid, tid_t os_id, bool workerthread = false);
+void ThreadFinish();
+u32 ThreadCreate(u32 tid, uptr uid, bool detached);
+void ThreadJoin(u32 tid);
+u32 ThreadTid(uptr uid);
+
+u32 GetCurrentThread();
+void SetCurrentThread(u32 tid);
+ThreadContext *CurrentThreadContext();
+void EnsureMainThreadIDIsCorrect();
+}  // namespace __lsan
+
+#endif  // LSAN_THREAD_H

external/llvm-project/compiler-rt/lib/lsan/weak_symbols.txt

@@ -0,0 +1,3 @@
+___lsan_default_options
+___lsan_default_suppressions
+___lsan_is_turned_off