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