From bcdfb408444c657422499a2274eb377879588e89 Mon Sep 17 00:00:00 2001
From: Derek Bruening <bruening@google.com>
Date: Sat, 9 Jul 2016 04:13:25 +0000
Subject: [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
---
 include/CMakeLists.txt             |  1 +
 include/sanitizer/esan_interface.h | 46 ++++++++++++++++++++++++++++++++++++++
 2 files changed, 47 insertions(+)
 create mode 100644 include/sanitizer/esan_interface.h

(limited to 'include')

diff --git a/include/CMakeLists.txt b/include/CMakeLists.txt
index ad1437ed1..0139b0601 100644
--- a/include/CMakeLists.txt
+++ b/include/CMakeLists.txt
@@ -4,6 +4,7 @@ set(SANITIZER_HEADERS
   sanitizer/common_interface_defs.h
   sanitizer/coverage_interface.h
   sanitizer/dfsan_interface.h
+  sanitizer/esan_interface.h
   sanitizer/linux_syscall_hooks.h
   sanitizer/lsan_interface.h
   sanitizer/msan_interface.h
diff --git a/include/sanitizer/esan_interface.h b/include/sanitizer/esan_interface.h
new file mode 100644
index 000000000..31e9b9b4d
--- /dev/null
+++ b/include/sanitizer/esan_interface.h
@@ -0,0 +1,46 @@
+//===-- sanitizer/esan_interface.h ------------------------------*- C++ -*-===//
+//
+//                     The LLVM Compiler Infrastructure
+//
+// This file is distributed under the University of Illinois Open Source
+// License. See LICENSE.TXT for details.
+//
+//===----------------------------------------------------------------------===//
+//
+// This file is a part of EfficiencySanitizer, a family of performance tuners.
+//
+// Public interface header.
+//===----------------------------------------------------------------------===//
+#ifndef SANITIZER_ESAN_INTERFACE_H
+#define SANITIZER_ESAN_INTERFACE_H
+
+#include <sanitizer/common_interface_defs.h>
+
+// We declare our interface routines as weak to allow the user to avoid
+// ifdefs and instead use this pattern to allow building the same sources
+// with and without our runtime library:
+//     if (__esan_report)
+//       __esan_report();
+#ifdef _MSC_VER
+/* selectany is as close to weak as we'll get. */
+#define COMPILER_RT_WEAK __declspec(selectany)
+#elif __GNUC__
+#define COMPILER_RT_WEAK __attribute__((weak))
+#else
+#define COMPILER_RT_WEAK
+#endif
+
+#ifdef __cplusplus
+extern "C" {
+#endif
+
+// This function can be called mid-run (or at the end of a run for
+// a server process that doesn't shut down normally) to request that
+// data for that point in the run be reported from the tool.
+void COMPILER_RT_WEAK __esan_report();
+
+#ifdef __cplusplus
+} // extern "C"
+#endif
+
+#endif // SANITIZER_ESAN_INTERFACE_H
-- 
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