Throwable.TraceInfo

[david via Digitalmars-d]

On Wednesday, 28 January 2015 at 14:17:36 UTC, Dicebot wrote:
> AFAIK it is exactly generation of stack trace that takes so 
> long. Recently it was changes to be generated lazily which is 
> why version without `toString` is much faster. I don't think it 
> can be any better if you want stack trace. For getting just the 
> exception data one can directly access `e.msg` / `e.file` / 
> `e.line`

BTW: The code of the 'ctor generates the calltrace - so it's not 
lazy!
 From the druntime:

auto  stackTop    = getBasePtr();
                     auto  stackBottom = cast(void**) 
thread_stackBottom();
                     void* dummy;

                     if( stackTop && &dummy < stackTop && stackTop 
< stackBottom )
                     {
                         auto stackPtr = stackTop;

                         for( numframes = 0; stackTop <= stackPtr 
&&
                                             stackPtr < 
stackBottom &&
                                             numframes < 
MAXFRAMES; )
                         {
                             callstack[numframes++] = *(stackPtr + 
1);
                             stackPtr = cast(void**) *stackPtr;
                         }
                     }