1 //===-- sanitizer_symbolizer.cc -------------------------------------------===// 2 // 3 // The LLVM Compiler Infrastructure 4 // 5 // This file is distributed under the University of Illinois Open Source 6 // License. See LICENSE.TXT for details. 7 // 8 //===----------------------------------------------------------------------===// 9 // 10 // This file is shared between AddressSanitizer and ThreadSanitizer 11 // run-time libraries. 12 //===----------------------------------------------------------------------===// 13 14 #include "sanitizer_platform.h" 15 #include "sanitizer_internal_defs.h" 16 #include "sanitizer_placement_new.h" 17 #include "sanitizer_symbolizer.h" 18 19 namespace __sanitizer { 20 21 Symbolizer *Symbolizer::symbolizer_; 22 StaticSpinMutex Symbolizer::init_mu_; 23 LowLevelAllocator Symbolizer::symbolizer_allocator_; 24 25 Symbolizer *Symbolizer::GetOrNull() { 26 SpinMutexLock l(&init_mu_); 27 return symbolizer_; 28 } 29 30 Symbolizer *Symbolizer::Get() { 31 SpinMutexLock l(&init_mu_); 32 RAW_CHECK_MSG(symbolizer_ != 0, "Using uninitialized symbolizer!"); 33 return symbolizer_; 34 } 35 36 Symbolizer *Symbolizer::Disable() { 37 CHECK_EQ(0, symbolizer_); 38 // Initialize a dummy symbolizer. 39 symbolizer_ = new(symbolizer_allocator_) Symbolizer; 40 return symbolizer_; 41 } 42 43 void Symbolizer::AddHooks(Symbolizer::StartSymbolizationHook start_hook, 44 Symbolizer::EndSymbolizationHook end_hook) { 45 CHECK(start_hook_ == 0 && end_hook_ == 0); 46 start_hook_ = start_hook; 47 end_hook_ = end_hook; 48 } 49 50 Symbolizer::Symbolizer() : start_hook_(0), end_hook_(0) {} 51 52 Symbolizer::SymbolizerScope::SymbolizerScope(const Symbolizer *sym) 53 : sym_(sym) { 54 if (sym_->start_hook_) 55 sym_->start_hook_(); 56 } 57 58 Symbolizer::SymbolizerScope::~SymbolizerScope() { 59 if (sym_->end_hook_) 60 sym_->end_hook_(); 61 } 62 63 } // namespace __sanitizer 64
