Re: [boost] [Thread] Win32 exception handling

Subject: Re: [boost] [Thread] Win32 exception handling
From: Alexander Terekhov (terekhov_at_[hidden])
Date: 2008-11-25 18:42:42

"vicente.botet" wrote:
[...]
> Why do you associate an exception to a broken program state?

Example:

Suppose that your operation's documentation says that it may need heap
unless the caller provides X() amount of memory via void * parameter to
be used instead of heap (void * p is not zero).

#include <new>

void operation(void * p) throw (std::bad_alloc); // may throw if p == 0

size_t X();

#include <new>

int main() {
  if (void * const p = new(std::nothrow) char [X()]) {
    // ... nothrow
    operation(p); 
  }
  else {
    // ... nothrow
  }
  // ... nothrow
}

What if your operation still throws std::bad_alloc?

regards,
alexander.