xref: /freebsd/contrib/llvm-project/compiler-rt/lib/hwasan/hwasan_thread_list.cpp (revision 0fca6ea1d4eea4c934cfff25ac9ee8ad6fe95583) 
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 
hwasanThreadList()11 HwasanThreadList &hwasanThreadList() { return *hwasan_thread_list; }
hwasanThreadArgRetval()12 ThreadArgRetval &hwasanThreadArgRetval() { return *thread_data; }
13 
InitThreadList(uptr storage,uptr size)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
30