llvm-svn: 148235

and switches our interceptors to using them instead of the default
vm_allocate-based approach used by mach_override_ptr.

To simplify the code, a fixed memory mapping is used for the allocation pool --
note that we can't mmap an arbitrary chunk of memory, because the shadow memory hasn't been mapped yet
(for the reasons discussed in http://code.google.com/p/address-sanitizer/issues/detail?id=24, we cannot map the shadow earlier)

The patch drops the program startup time from several second to half a second,
which speeds up the execution of ASan tests noticeably.
Because of the virtual memory size occupied by the programs it's hard
to speed up the shutdown time, which would've also helped the tests.

llvm-svn: 148116

llvm-svn: 147916

[asan] get rid of the scary TSD destructor code. Now, we store the leaky AsanThreadSummary in TSD and never remove it from there.

llvm-svn: 147910

llvm-svn: 147896

llvm-svn: 147878

[asan] temporary reinstate string.h/strings.h. Removal of those caused a Mac build failulre which I failed to observe before the commit

llvm-svn: 147810

llvm-svn: 147809

llvm-svn: 147807

llvm-svn: 147796

llvm-svn: 147793

llvm-svn: 147792

llvm-svn: 147784

llvm-svn: 147326

llvm-svn: 147317

llvm-svn: 147316

llvm-svn: 147315

llvm-svn: 147304

llvm-svn: 146501

[asan] cleanup memset/memmove/memcpy interceptors and enable them on Mac. Patch by samsonov@google.com

llvm-svn: 145826

llvm-svn: 145691

AddressSanitizer run-time library. Not yet integrated with the compiler-rt build system, but can be built using the old makefile. See details in README.txt

llvm-svn: 145463