1/** 2 * Common code for writing containers. 3 * 4 * Copyright: Copyright Martin Nowak 2013. 5 * License: $(WEB www.boost.org/LICENSE_1_0.txt, Boost License 1.0). 6 * Authors: Martin Nowak 7 */ 8module rt.util.container.common; 9 10import core.stdc.stdlib : malloc, realloc; 11public import core.stdc.stdlib : free; 12import core.internal.traits : dtorIsNothrow; 13nothrow: 14 15void* xrealloc(void* ptr, size_t sz) nothrow @nogc 16{ 17 import core.exception; 18 19 if (!sz) { .free(ptr); return null; } 20 if (auto nptr = .realloc(ptr, sz)) return nptr; 21 .free(ptr); onOutOfMemoryErrorNoGC(); 22 assert(0); 23} 24 25void* xmalloc(size_t sz) nothrow @nogc 26{ 27 import core.exception; 28 if (auto nptr = .malloc(sz)) 29 return nptr; 30 onOutOfMemoryErrorNoGC(); 31 assert(0); 32} 33 34void destroy(T)(ref T t) if (is(T == struct) && dtorIsNothrow!T) 35{ 36 scope (failure) assert(0); // nothrow hack 37 object.destroy(t); 38} 39 40void destroy(T)(ref T t) if (!is(T == struct)) 41{ 42 t = T.init; 43} 44 45void initialize(T)(ref T t) if (is(T == struct)) 46{ 47 import core.stdc.string; 48 if (auto p = typeid(T).initializer().ptr) 49 memcpy(&t, p, T.sizeof); 50 else 51 memset(&t, 0, T.sizeof); 52} 53 54void initialize(T)(ref T t) if (!is(T == struct)) 55{ 56 t = T.init; 57} 58 59version (unittest) struct RC() 60{ 61nothrow: 62 this(size_t* cnt) { ++*(_cnt = cnt); } 63 ~this() { if (_cnt) --*_cnt; } 64 this(this) { if (_cnt) ++*_cnt; } 65 size_t* _cnt; 66} 67