[sanitizer] factor out ByteMap from SizeClassAllocator32 so that it can be later replaced with a more memory-efficient implementation on 64-bit.

llvm-svn: 182234

llvm-svn: 182218

llvm-svn: 182198

llvm-svn: 182177

Before, we had an unused internal_getpid function for Linux, and a
platform-independent GetPid function.  To make the naming conventions
consistent for syscall-like functions, the GetPid syscall wrapper
in sanitizer_posix.cc is moved to sanitizer_mac.cc, and GetPid is
renamed to internal_getpid, bringing the Linux variant into use.

llvm-svn: 182132

Introduce a new object library, RTSanitizerCommonLibc, which will contain
the subset of sanitizer_common with libc dependencies. RTSanitizerCommon
contains the remainder of sanitizer_common, and is intended to have no
libc dependencies. Begin moving code to RTSanitizerCommonLibc, starting
with sanitizer_common.cc, whose libc-dependent portion is moved to
sanitizer_common_libcdep.cc, the first member of the new library.

This split affects the CMake build only.  The makefile build continues
to produce the full sanitizer_common library.

llvm-svn: 182118

llvm-svn: 182110

[ASan] Make the regression test for time(NULL) Linux-specific, as it crashes on Darwin (and the problem used to occur on Linux).
Do not use zero-based shadow for the time() test.

llvm-svn: 182107

llvm-svn: 182094

llvm-svn: 182093

it was added to debug mysterious hangs, but it does not seem to happen anymore
now it only clutter up output

llvm-svn: 182089

this is required to handle Object.Wait()

llvm-svn: 182088

llvm-svn: 182087

[ASan] Fix allow_user_segv.cc on Darwin (32-bit build required a SIGBUS handler instead of the SIGSEGV one)

llvm-svn: 182080

llvm-svn: 182010

llvm-svn: 182008

llvm-svn: 182006

[asan] symbolize when possible, even if ASAN_SYMBOLIZER_PATH is not provided. On Linux this will use dl_iterate_phdr instead of /proc/self/maps, even if the symbolizer is not installed

llvm-svn: 182005

llvm-svn: 182004

llvm-svn: 182002

llvm-svn: 181992

llvm-svn: 181991

[sanitizer] fix the GetBlockBegin overflow bug while preserving the performance optimization (use 32-bit division when possible). Improve the benchmarks that checks for performance of GetBlockBegin/GetMetaData

llvm-svn: 181989

[sanitizer] added a test for a bug in allocator discovered by Sergey Matveev (uint32 overflow in GetBlockBegin)

llvm-svn: 181984

The calls to fwrite/fread can be very expensive. GCC avoids this by using a
buffer to read and write from the file, thus limiting the number of fwrite/fread
calls.

<rdar://problem/13466086>

llvm-svn: 181924

llvm-svn: 181890

llvm-svn: 181881

llvm-svn: 181796

llvm-svn: 181793

llvm-svn: 181791

llvm-svn: 181790

llvm-svn: 181787

llvm-svn: 181786

llvm-svn: 181763

llvm-svn: 181708

llvm-svn: 181698

Original patch by Abdoulaye Walsimou Gaye.

llvm-svn: 181697

llvm-svn: 181457

llvm-svn: 181440

This change moves to a model where the error value of a system call is
potentially contained in the return value itself rather than being
implicit in errno.  The helper function internal_iserror can be used
to extract the error value from a return value.  On platforms other
than Linux/x86_64 this still uses errno, but other platforms are free
to port their error handling to this new model.

Differential Revision: http://llvm-reviews.chandlerc.com/D756

llvm-svn: 181436