Annotate mapped memory regions for LeakSanitizer.

src/platform-linux.cc

 // Copyright 2012 the V8 project authors. 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
@@ skipping 39 matching lines @@
 #include <errno.h>
 #include <stdarg.h>
 
 // GLibc on ARM defines mcontext_t has a typedef for 'struct sigcontext'.
 // Old versions of the C library <signal.h> didn't define the type.
 #if defined(__ANDROID__) && !defined(__BIONIC_HAVE_UCONTEXT_T) && \
     defined(__arm__) && !defined(__BIONIC_HAVE_STRUCT_SIGCONTEXT)
 #include <asm/sigcontext.h>
 #endif
 
+#if defined(LEAK_SANITIZER)
+#include <sanitizer/lsan_interface.h>
+#endif
+
 #undef MAP_TYPE
 
 #include "v8.h"
 
 #include "platform.h"
 #include "v8threads.h"
 #include "vm-state-inl.h"
 
 
 namespace v8 {
@@ skipping 271 matching lines @@
   if (aligned_size != request_size) {
     size_t suffix_size = request_size - aligned_size;
     OS::Free(aligned_base + aligned_size, suffix_size);
     request_size -= suffix_size;
   }
 
   ASSERT(aligned_size == request_size);
 
   address_ = static_cast<void*>(aligned_base);
   size_ = aligned_size;
+#if defined(LEAK_SANITIZER)
+  __lsan_register_root_region(address_, size_);
+#endif
 }
 
 
 VirtualMemory::~VirtualMemory() {
   if (IsReserved()) {
     bool result = ReleaseRegion(address(), size());
     ASSERT(result);
     USE(result);
   }
 }
@@ skipping 29 matching lines @@
 void* VirtualMemory::ReserveRegion(size_t size) {
   void* result = mmap(OS::GetRandomMmapAddr(),
                       size,
                       PROT_NONE,
                       MAP_PRIVATE | MAP_ANONYMOUS | MAP_NORESERVE,
                       kMmapFd,
                       kMmapFdOffset);
 
   if (result == MAP_FAILED) return NULL;
 
+#if defined(LEAK_SANITIZER)
+  __lsan_register_root_region(result, size);
+#endif
   return result;
 }
 
 
 bool VirtualMemory::CommitRegion(void* base, size_t size, bool is_executable) {
 #if defined(__native_client__)
   // The Native Client port of V8 uses an interpreter,
   // so code pages don't need PROT_EXEC.
   int prot = PROT_READ | PROT_WRITE;
 #else
@@ skipping 16 matching lines @@
   return mmap(base,
               size,
               PROT_NONE,
               MAP_PRIVATE | MAP_ANONYMOUS | MAP_NORESERVE | MAP_FIXED,
               kMmapFd,
               kMmapFdOffset) != MAP_FAILED;
 }
 
 
 bool VirtualMemory::ReleaseRegion(void* base, size_t size) {
+#if defined(LEAK_SANITIZER)
+  __lsan_unregister_root_region(base, size);
+#endif
   return munmap(base, size) == 0;
 }
 
 
 bool VirtualMemory::HasLazyCommits() {
   return true;
 }
 
 } }  // namespace v8::internal