compiler-rt/lib/hwasan/hwasan_thread_list.cpp

   1 #include "hwasan_thread_list.h"
   2
   3 #include "sanitizer_common/sanitizer_placement_new.h"
   4 #include "sanitizer_common/sanitizer_thread_arg_retval.h"
   5
   6 namespace __hwasan {
   7
   8 static HwasanThreadList *hwasan_thread_list;
   9 static ThreadArgRetval *thread_data;
  10
  11 HwasanThreadList &hwasanThreadList() { return *hwasan_thread_list; }
  12 ThreadArgRetval &hwasanThreadArgRetval() { return *thread_data; }
  13
  14 void InitThreadList(uptr storage, uptr size) {
  15   CHECK_EQ(hwasan_thread_list, nullptr);
  16
  17   alignas(alignof(HwasanThreadList)) static char
  18       thread_list_placeholder[sizeof(HwasanThreadList)];
  19   hwasan_thread_list =
  20       new (thread_list_placeholder) HwasanThreadList(storage, size);
  21
  22   CHECK_EQ(thread_data, nullptr);
  23
  24   alignas(alignof(ThreadArgRetval)) static char
  25       thread_data_placeholder[sizeof(ThreadArgRetval)];
  26   thread_data = new (thread_data_placeholder) ThreadArgRetval();
  27 }
  28
  29 }  // namespace __hwasan