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