看板 DFBSD_kernel 關於我們 聯絡資訊
Greg 'groggy' Lehey wrote: > You'll notice that [C++ exceptions are] implemented with setjmp()/longjmp(). Is this the current state of g++? I thought -- perhaps incorrectly -- that EDG-based compilers used lookup tables based on the PC. This imposes no performance hit in the cases where the exception isn't invoked -- it's popular for this reason. I thought that g++ was heading in this direction, but I haven't been following the changes terribly closely. Win32 compilers modify a global pointer used by the OS for structured exception handling (their equivalent of signal handlers). I find it rather elegant, but no compilers take full advantage of it.