Alexey Samsonov 9c85927012 [Sanitizer] Make StackTrace a lightweight reference to array of PCs, and
introduce a BufferedStackTrace class, which owns this array.

Summary:
This change splits __sanitizer::StackTrace class into a lightweight
__sanitizer::StackTrace, which doesn't own array of PCs, and BufferedStackTrace,
which owns it. This would allow us to simplify the interface of StackDepot,
and eventually merge __sanitizer::StackTrace with __tsan::StackTrace.

Test Plan: regression test suite.

Reviewers: kcc, dvyukov

Reviewed By: dvyukov

Subscribers: llvm-commits

Differential Revision: http://reviews.llvm.org/D5985

llvm-svn: 220635
2014-10-26 03:35:14 +00:00

48 lines
1.9 KiB
C++

//=-- lsan.h --------------------------------------------------------------===//
//
// 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 LeakSanitizer.
// Private header for standalone LSan RTL.
//
//===----------------------------------------------------------------------===//
#include "sanitizer_common/sanitizer_flags.h"
#include "sanitizer_common/sanitizer_stacktrace.h"
#define GET_STACK_TRACE(max_size, fast) \
BufferedStackTrace stack; \
{ \
uptr stack_top = 0, stack_bottom = 0; \
ThreadContext *t; \
if (fast && (t = CurrentThreadContext())) { \
stack_top = t->stack_end(); \
stack_bottom = t->stack_begin(); \
} \
stack.Unwind(max_size, StackTrace::GetCurrentPc(), GET_CURRENT_FRAME(), \
/* context */ 0, stack_top, stack_bottom, fast); \
}
#define GET_STACK_TRACE_FATAL \
GET_STACK_TRACE(kStackTraceMax, common_flags()->fast_unwind_on_fatal)
#define GET_STACK_TRACE_MALLOC \
GET_STACK_TRACE(__sanitizer::common_flags()->malloc_context_size, \
common_flags()->fast_unwind_on_malloc)
namespace __lsan {
void InitializeInterceptors();
} // namespace __lsan
extern bool lsan_inited;
extern bool lsan_init_is_running;
extern "C" void __lsan_init();