[asan] asan_allocator2: fix the memalign handling (clear the first word of allocated chunk in case there is an old memalign magic)

llvm-svn: 172603

[asan] enable asan_allocator2 by default on Linux. Will enable it on other platforms and remove the old one later, after additional testing. The new allocator is much faster and uses less memory

llvm-svn: 172531

llvm-svn: 172529

llvm-svn: 172526

llvm-svn: 172523

llvm-svn: 172522

llvm-svn: 172521

llvm-svn: 172520

llvm-svn: 172519

llvm-svn: 172518

Specify weaker memory order in case we optimize for it in the future,
presently still doing same __sync_lock_test_and_set() as before.

Change suggested by Alexey Samsonov, thanks!

llvm-svn: 172429

Move my_rand() to the common header.

This lets us avoid the use of rand_r in sanitizer_common tests.
There is no rand_r on Android.

llvm-svn: 172421

llvm-svn: 172419

llvm-svn: 172415

llvm-svn: 172410

Not supported on Android.

llvm-svn: 172408

llvm-svn: 172398

[asan] use the slow CFI-based unwinder when reporting an error. Still use the fast unwinder for malloc/free. Linux-x86-only for now.

llvm-svn: 172397

asan/tsan: mmap shadow memory before allocating memory (otherwise other threads can access non yet allocated shadow)

llvm-svn: 172395

ASan: Disable alloc/dealloc-mismatch checker on Mac for now (it produces weird false positives on googletest)

llvm-svn: 172394

llvm-svn: 172393

llvm-svn: 172392

llvm-svn: 172390

llvm-svn: 172389

1. Increase size classes from 32k to 128k
2. Use lock-free stack in central cache
3. Use blocking mutex when allocate new memory with mmap

llvm-svn: 172388

llvm-svn: 172387

llvm-svn: 172386

llvm-svn: 172385

llvm-svn: 172383

llvm-svn: 172381

llvm-svn: 172380

Patch contributed by Andrew Turner.

llvm-svn: 172366

Patch contributed by Andrew Turner.

llvm-svn: 172365

llvm-svn: 172226

replace lists with arrays

llvm-svn: 172217

llvm-svn: 172216

llvm-svn: 172215

llvm-svn: 172213

llvm-svn: 172210

llvm-svn: 172209