f4341a5a66
builtins, and also the various sanitizers. Support for these will be added in a later commit.
101 lines
2.7 KiB
C++
101 lines
2.7 KiB
C++
//===-- sanitizer_symbolizer.cc -------------------------------------------===//
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//
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// The LLVM Compiler Infrastructure
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//
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// This file is distributed under the University of Illinois Open Source
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// License. See LICENSE.TXT for details.
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//
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//===----------------------------------------------------------------------===//
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//
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// This file is shared between AddressSanitizer and ThreadSanitizer
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// run-time libraries.
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//===----------------------------------------------------------------------===//
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#include "sanitizer_allocator_internal.h"
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#include "sanitizer_platform.h"
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#include "sanitizer_internal_defs.h"
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#include "sanitizer_libc.h"
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#include "sanitizer_placement_new.h"
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#include "sanitizer_symbolizer.h"
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namespace __sanitizer {
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AddressInfo::AddressInfo() {
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internal_memset(this, 0, sizeof(AddressInfo));
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function_offset = kUnknown;
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}
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void AddressInfo::Clear() {
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InternalFree(module);
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InternalFree(function);
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InternalFree(file);
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internal_memset(this, 0, sizeof(AddressInfo));
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function_offset = kUnknown;
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}
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void AddressInfo::FillAddressAndModuleInfo(uptr addr, const char *mod_name,
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uptr mod_offset) {
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address = addr;
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module = internal_strdup(mod_name);
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module_offset = mod_offset;
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}
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SymbolizedStack::SymbolizedStack() : next(nullptr), info() {}
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SymbolizedStack *SymbolizedStack::New(uptr addr) {
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void *mem = InternalAlloc(sizeof(SymbolizedStack));
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SymbolizedStack *res = new(mem) SymbolizedStack();
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res->info.address = addr;
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return res;
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}
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void SymbolizedStack::ClearAll() {
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info.Clear();
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if (next)
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next->ClearAll();
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InternalFree(this);
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}
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DataInfo::DataInfo() {
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internal_memset(this, 0, sizeof(DataInfo));
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}
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void DataInfo::Clear() {
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InternalFree(module);
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InternalFree(name);
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internal_memset(this, 0, sizeof(DataInfo));
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}
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Symbolizer *Symbolizer::symbolizer_;
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StaticSpinMutex Symbolizer::init_mu_;
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LowLevelAllocator Symbolizer::symbolizer_allocator_;
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Symbolizer *Symbolizer::Disable() {
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CHECK_EQ(0, symbolizer_);
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// Initialize a dummy symbolizer.
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symbolizer_ = new(symbolizer_allocator_) Symbolizer;
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return symbolizer_;
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}
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void Symbolizer::AddHooks(Symbolizer::StartSymbolizationHook start_hook,
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Symbolizer::EndSymbolizationHook end_hook) {
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CHECK(start_hook_ == 0 && end_hook_ == 0);
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start_hook_ = start_hook;
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end_hook_ = end_hook;
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}
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Symbolizer::Symbolizer() : start_hook_(0), end_hook_(0) {}
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Symbolizer::SymbolizerScope::SymbolizerScope(const Symbolizer *sym)
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: sym_(sym) {
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if (sym_->start_hook_)
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sym_->start_hook_();
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}
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Symbolizer::SymbolizerScope::~SymbolizerScope() {
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if (sym_->end_hook_)
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sym_->end_hook_();
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}
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} // namespace __sanitizer
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