commit 3841accba82b47087647d023e670219ac3627710
author Yabin Cui <yabinc@google.com> Thu May 10 17:19:12 2018 -0700
committer Yabin Cui <yabinc@google.com> Mon May 14 14:00:18 2018 -0700
tree 2e5d901771563dded16721f694530b3ddc53e8ed
parent 3607fe672a1aa0fa775df01b60d18d287e7f8686

libprocinfo: add functions reading process map file.

Add test and benchmark.
Also switch libbacktrace, libunwindstack, libmemunreachable
to use libprocinfo for map file reading.
The benchmark shows using libprocinfo speeds up map file reading
in libbacktrace and libunwindstack 18% - 36% on walleye.

Bug: http://b/79118393
Test: run procinfo_test.
Test: run libunwindstack_test.
Test: run libbacktrace_test.
Test: run memunreachable_test.

Change-Id: Icf281c352f4103fc8d4ba6732c5c07b943330ca1

libmemunreachable/Android.bp

diff --git a/libmemunreachable/Android.bp b/libmemunreachable/Android.bp
index f164a19..248a9d2 100644
--- a/libmemunreachable/Android.bp
+++ b/libmemunreachable/Android.bp
@@ -29,7 +29,6 @@
         "HeapWalker.cpp",
         "LeakFolding.cpp",
         "LeakPipe.cpp",
-        "LineBuffer.cpp",
         "MemUnreachable.cpp",
         "ProcessMappings.cpp",
         "PtracerThread.cpp",
@@ -38,6 +37,7 @@
 
     static_libs: [
         "libc_malloc_debug_backtrace",
+        "libprocinfo",
     ],
     // Only need this for arm since libc++ uses its own unwind code that
     // doesn't mix with the other default unwind code.