[esan] Add __esan_report for mid-run data

Summary:
Adds a new public interface routine __esan_report() which can be used to
request profiling results prior to abnormal termination (e.g., for a server
process killed by its parent where the normal exit does not allow for
normal result reporting).

Implements this for the working-set tool.  The cache frag tool is left
unimplemented as it requires missing iteration capabilities.

Adds a new test.

Reviewers: aizatsky

Subscribers: vitalybuka, zhaoqin, kcc, eugenis, llvm-commits, kubabrecka

Differential Revision: http://reviews.llvm.org/D22098

git-svn-id: https://llvm.org/svn/llvm-project/compiler-rt/trunk@274964 91177308-0d34-0410-b5e6-96231b3b80d8

1 files changed, 1 insertions, 0 deletions

diff --git a/lib/esan/working_set.h b/lib/esan/working_set.h
index 660b5d066..38ff0635d 100644
--- a/lib/esan/working_set.h
+++ b/lib/esan/working_set.h
@@ -23,6 +23,7 @@ namespace __esan {
 void initializeWorkingSet();
 void initializeShadowWorkingSet();
 int finalizeWorkingSet();
+void reportWorkingSet();
 void processRangeAccessWorkingSet(uptr PC, uptr Addr, SIZE_T Size,
                                   bool IsWrite);