libsanitizer/lsan/lsan.h

   1 //=-- lsan.h --------------------------------------------------------------===//
   2 //
   3 // This file is distributed under the University of Illinois Open Source
   4 // License. See LICENSE.TXT for details.
   5 //
   6 //===----------------------------------------------------------------------===//
   7 //
   8 // This file is a part of LeakSanitizer.
   9 // Private header for standalone LSan RTL.
  10 //
  11 //===----------------------------------------------------------------------===//
  12
  13 #include "lsan_thread.h"
  14 #include "sanitizer_common/sanitizer_flags.h"
  15 #include "sanitizer_common/sanitizer_stacktrace.h"
  16
  17 #define GET_STACK_TRACE(max_size, fast)                       \
  18   __sanitizer::BufferedStackTrace stack;                      \
  19   GetStackTraceWithPcBpAndContext(&stack, max_size,           \
  20                                   StackTrace::GetCurrentPc(), \
  21                                   GET_CURRENT_FRAME(), nullptr, fast);
  22
  23 #define GET_STACK_TRACE_FATAL \
  24   GET_STACK_TRACE(kStackTraceMax, common_flags()->fast_unwind_on_fatal)
  25
  26 #define GET_STACK_TRACE_MALLOC                                      \
  27   GET_STACK_TRACE(__sanitizer::common_flags()->malloc_context_size, \
  28                   common_flags()->fast_unwind_on_malloc)
  29
  30 #define GET_STACK_TRACE_THREAD GET_STACK_TRACE(kStackTraceMax, true)
  31
  32 namespace __lsan {
  33
  34 void InitializeInterceptors();
  35 void ReplaceSystemMalloc();
  36
  37 #define ENSURE_LSAN_INITED do {   \
  38   CHECK(!lsan_init_is_running);   \
  39   if (!lsan_inited)               \
  40     __lsan_init();                \
  41 } while (0)
  42
  43 // Get the stack trace with the given pc and bp.
  44 // The pc will be in the position 0 of the resulting stack trace.
  45 // The bp may refer to the current frame or to the caller's frame.
  46 ALWAYS_INLINE
  47 void GetStackTraceWithPcBpAndContext(__sanitizer::BufferedStackTrace *stack,
  48                                      __sanitizer::uptr max_depth,
  49                                      __sanitizer::uptr pc, __sanitizer::uptr bp,
  50                                      void *context, bool fast) {
  51   uptr stack_top = 0, stack_bottom = 0;
  52   ThreadContext *t;
  53   if (fast && (t = CurrentThreadContext())) {
  54     stack_top = t->stack_end();
  55     stack_bottom = t->stack_begin();
  56   }
  57   if (!SANITIZER_MIPS || IsValidFrame(bp, stack_top, stack_bottom)) {
  58     stack->Unwind(max_depth, pc, bp, context, stack_top, stack_bottom, fast);
  59   }
  60 }
  61
  62 }  // namespace __lsan
  63
  64 extern bool lsan_inited;
  65 extern bool lsan_init_is_running;
  66
  67 extern "C" SANITIZER_INTERFACE_ATTRIBUTE void __lsan_init();