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3.1 kB · 89 lines
C++
at develop
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#include <cstddef>
namespace Gecode { namespace Support {
/// Check whether \a p is marked bool marked(void* p); /// Return marked pointer for unmarked pointer \a p void* mark(void* p); /// Return unmarked pointer for a marked pointer \a p void* unmark(void* p); /// Return marked pointer for \a p (possibly already marked) void* fmark(void* p); /// Return unmarked pointer for a possibly marked pointer \a p void* funmark(void* p); /// Split possibly marked pointer \a p into mark \a m and unmarked pointer void* ptrsplit(void* p, ptrdiff_t& m); /// Join unmarked pointer \a p and \a m into marked pointer void* ptrjoin(void* p, ptrdiff_t m);
forceinline bool marked(void* p) { return (reinterpret_cast<ptrdiff_t>(p) & 1) != 0; } forceinline void* mark(void* p) { assert(!marked(p)); return reinterpret_cast<void*>(reinterpret_cast<ptrdiff_t>(p)+1); } forceinline void* unmark(void* p) { assert(marked(p)); return reinterpret_cast<void*>(reinterpret_cast<ptrdiff_t>(p)-1); } forceinline void* fmark(void* p) { return reinterpret_cast<void*>(reinterpret_cast<ptrdiff_t>(p)|1); } forceinline void* funmark(void* p) { return reinterpret_cast<void*>(reinterpret_cast<ptrdiff_t>(p)& ~static_cast<ptrdiff_t>(1)); } forceinline void* ptrsplit(void* p, ptrdiff_t& m) { ptrdiff_t mp = reinterpret_cast<ptrdiff_t>(p); m = mp & 1; return reinterpret_cast<void*>(mp & ~static_cast<ptrdiff_t>(1)); } forceinline void* ptrjoin(void* p, ptrdiff_t m) { return reinterpret_cast<void*>(reinterpret_cast<ptrdiff_t>(p) | m); }
}}
// STATISTICS: support-any