BumpAllocator

When you need to dynamically allocate many objects and don't care about freeing them. "new X" otherwise has an overhead of something like 0.05us + 16 bytes per allocation.

8 lines tested

content/various/BumpAllocator.h — Simon Lindholm, source: me

// Either globally or in a single class:
static char buf[450 << 20];
void* operator new(size_t s) {
	static size_t i = sizeof buf;
	assert(s < i);
	return (void*)&buf[i -= s];
}
void operator delete(void*) {}