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Symbol address decoding on unix.

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This commit is contained in:
Bartosz Taudul 2020-02-26 23:38:04 +01:00
parent 4ddafdeeaf
commit 56dce646cc
1 changed files with 79 additions and 0 deletions
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79
client/TracyCallstack.cpp
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@ -403,6 +403,85 @@ const char* DecodeCallstackPtrFast( uint64_t ptr )
return ret;
}
static int SymbolAddressDataCb( void* data, uintptr_t pc, const char* fn, int lineno, const char* function )
{
auto& sym = *(SymbolData*)data;
enum { DemangleBufLen = 64*1024 };
char demangled[DemangleBufLen];
if( !fn && !function )
{
const char* symname = nullptr;
const char* symloc = nullptr;
auto vptr = (void*)pc;
Dl_info dlinfo;
if( dladdr( vptr, &dlinfo ) )
{
symloc = dlinfo.dli_fname;
symname = dlinfo.dli_sname;
if( symname && symname[0] == '_' )
{
size_t len = DemangleBufLen;
int status;
abi::__cxa_demangle( symname, demangled, &len, &status );
if( status == 0 )
{
symname = demangled;
}
}
}
if( !symname ) symname = "[unknown]";
if( !symloc ) symloc = "[unknown]";
sym.name = CopyString( symname );
sym.file = CopyString( symloc );
sym.line = 0;
}
else
{
if( !fn ) fn = "[unknown]";
if( !function )
{
function = "[unknown]";
}
else
{
if( function[0] == '_' )
{
size_t len = DemangleBufLen;
int status;
abi::__cxa_demangle( function, demangled, &len, &status );
if( status == 0 )
{
function = demangled;
}
}
}
sym.name = CopyString( function );
sym.file = CopyString( fn );
sym.line = lineno;
}
return 1;
}
static void SymbolAddressErrorCb( void* data, const char* /*msg*/, int /*errnum*/ )
{
memset( data, 0, sizeof( SymbolData ) );
}
SymbolData DecodeSymbolAddress( uint64_t ptr )
{
SymbolData sym;
backtrace_pcinfo( cb_bts, ptr, SymbolAddressDataCb, SymbolAddressErrorCb, &sym );
return sym;
}
static int CallstackDataCb( void* /*data*/, uintptr_t pc, const char* fn, int lineno, const char* function )
{
enum { DemangleBufLen = 64*1024 };