public static void TypicalScene() { const int count = 1000000; long startTick = 0; long interval, interval2; // 测试float类型 { var floatArray = new UnmanagedArray <float>(count); startTick = DateTime.Now.Ticks; for (int i = 0; i < count; i++) { floatArray[i] = i; } for (int i = 0; i < count; i++) { var item = floatArray[i]; if (item != i) { throw new Exception(); } } interval = DateTime.Now.Ticks - startTick; unsafe { startTick = DateTime.Now.Ticks; float *header = (float *)floatArray.FirstElement(); float *last = (float *)floatArray.LastElement(); float *tailAddress = (float *)floatArray.TailAddress(); int value = 0; for (float *ptr = header; ptr <= last /*or: ptr < tailAddress*/; ptr++) { *ptr = value++; } int i = 0; for (float *ptr = header; ptr <= last /*or: ptr < tailAddress*/; ptr++, i++) { var item = *ptr; if (item != i) { throw new Exception(); } } interval2 = DateTime.Now.Ticks - startTick; } Console.WriteLine("Ticks: safe: {0} vs unsafe: {1}", interval, interval2); } // 测试decimal类型 { var decimalArray = new UnmanagedArray <decimal>(count); startTick = DateTime.Now.Ticks; for (int i = 0; i < count; i++) { decimalArray[i] = i; } for (int i = 0; i < count; i++) { var item = decimalArray[i]; if (item != i) { throw new Exception(); } } interval = DateTime.Now.Ticks - startTick; unsafe { startTick = DateTime.Now.Ticks; decimal *header = (decimal *)decimalArray.FirstElement(); decimal *last = (decimal *)decimalArray.LastElement(); decimal *tailAddress = (decimal *)decimalArray.TailAddress(); int value = 0; for (decimal *ptr = header; ptr <= last /*or: ptr < tailAddress*/; ptr++) { *ptr = value++; } int i = 0; for (decimal *ptr = header; ptr <= last /*or: ptr < tailAddress*/; ptr++, i++) { var item = *ptr; if (item != i) { throw new Exception(); } } interval2 = DateTime.Now.Ticks - startTick; } Console.WriteLine("Ticks: safe: {0} vs unsafe: {1}", interval, interval2); } // 测试int类型 { var intArray = new UnmanagedArray <int>(count); startTick = DateTime.Now.Ticks; for (int i = 0; i < count; i++) { intArray[i] = i; } for (int i = 0; i < count; i++) { var item = intArray[i]; if (item != i) { throw new Exception(); } } interval = DateTime.Now.Ticks - startTick; unsafe { startTick = DateTime.Now.Ticks; int *header = (int *)intArray.FirstElement(); int *last = (int *)intArray.LastElement(); int *tailAddress = (int *)intArray.TailAddress(); int value = 0; for (int *ptr = header; ptr <= last /*or: ptr < tailAddress*/; ptr++) { *ptr = value++; } int i = 0; for (int *ptr = header; ptr <= last /*or: ptr < tailAddress*/; ptr++, i++) { var item = *ptr; if (item != i) { throw new Exception(); } } interval2 = DateTime.Now.Ticks - startTick; } Console.WriteLine("Ticks: safe: {0} vs unsafe: {1}", interval, interval2); } // 测试bool类型 { var boolArray = new UnmanagedArray <bool>(count); startTick = DateTime.Now.Ticks; for (int i = 0; i < count; i++) { boolArray[i] = i % 2 == 0; } for (int i = 0; i < count; i++) { var item = boolArray[i]; if (item != (i % 2 == 0)) { throw new Exception(); } } interval = DateTime.Now.Ticks - startTick; unsafe { startTick = DateTime.Now.Ticks; bool *header = (bool *)boolArray.FirstElement(); bool *last = (bool *)boolArray.LastElement(); bool *tailAddress = (bool *)boolArray.TailAddress(); int value = 0; for (bool *ptr = header; ptr <= last /*or: ptr < tailAddress*/; ptr++) { *ptr = (value % 2 == 0); value++; } int i = 0; for (bool *ptr = header; ptr <= last /*or: ptr < tailAddress*/; ptr++, i++) { var item = *ptr; if (item != (i % 2 == 0)) { throw new Exception(); } } interval2 = DateTime.Now.Ticks - startTick; } Console.WriteLine("Ticks: safe: {0} vs unsafe: {1}", interval, interval2); } // 测试vec3类型 { var vec3Array = new UnmanagedArray <vec3>(count); startTick = DateTime.Now.Ticks; for (int i = 0; i < count; i++) { vec3Array[i] = new vec3(i * 3 + 0, i * 3 + 1, i * 3 + 2); } for (int i = 0; i < count; i++) { var item = vec3Array[i]; var old = new vec3(i * 3 + 0, i * 3 + 1, i * 3 + 2); if (item.x != old.x || item.y != old.y || item.z != old.z) { throw new Exception(); } } interval = DateTime.Now.Ticks - startTick; unsafe { startTick = DateTime.Now.Ticks; vec3 *header = (vec3 *)vec3Array.FirstElement(); vec3 *last = (vec3 *)vec3Array.LastElement(); vec3 *tailAddress = (vec3 *)vec3Array.TailAddress(); int i = 0; for (vec3 *ptr = header; ptr <= last /*or: ptr < tailAddress*/; ptr++) { *ptr = new vec3(i * 3 + 0, i * 3 + 1, i * 3 + 2); i++; } i = 0; for (vec3 *ptr = header; ptr <= last /*or: ptr < tailAddress*/; ptr++, i++) { var item = *ptr; var old = new vec3(i * 3 + 0, i * 3 + 1, i * 3 + 2); if (item.x != old.x || item.y != old.y || item.z != old.z) { throw new Exception(); } } interval2 = DateTime.Now.Ticks - startTick; } Console.WriteLine("Ticks: safe: {0} vs unsafe: {1}", interval, interval2); } // 测试mat4类型 { var vec3Array = new UnmanagedArray <mat4>(count); startTick = DateTime.Now.Ticks; for (int i = 0; i < count; i++) { vec3Array[i] = new mat4(new vec4(i, i + 1, i + 2, i + 3), new vec4(i, i + 1, i + 2, i + 3), new vec4(i, i + 1, i + 2, i + 3), new vec4(i, i + 1, i + 2, i + 3)); } for (int i = 0; i < count; i++) { var item = vec3Array[i]; var old = new mat4(new vec4(i, i + 1, i + 2, i + 3), new vec4(i, i + 1, i + 2, i + 3), new vec4(i, i + 1, i + 2, i + 3), new vec4(i, i + 1, i + 2, i + 3)); for (int col = 0; col < 4; col++) { for (int row = 0; row < 4; row++) { if (item[col][row] != old[col][row]) { throw new Exception(); } } } } interval = DateTime.Now.Ticks - startTick; unsafe { startTick = DateTime.Now.Ticks; mat4 *header = (mat4 *)vec3Array.FirstElement(); mat4 *last = (mat4 *)vec3Array.LastElement(); mat4 *tailAddress = (mat4 *)vec3Array.TailAddress(); int i = 0; for (mat4 *ptr = header; ptr <= last /*or: ptr < tailAddress*/; ptr++) { *ptr = new mat4(new vec4(i, i + 1, i + 2, i + 3), new vec4(i, i + 1, i + 2, i + 3), new vec4(i, i + 1, i + 2, i + 3), new vec4(i, i + 1, i + 2, i + 3)); i++; } i = 0; for (mat4 *ptr = header; ptr <= last /*or: ptr < tailAddress*/; ptr++, i++) { var item = *ptr; var old = new mat4(new vec4(i, i + 1, i + 2, i + 3), new vec4(i, i + 1, i + 2, i + 3), new vec4(i, i + 1, i + 2, i + 3), new vec4(i, i + 1, i + 2, i + 3)); for (int col = 0; col < 4; col++) { for (int row = 0; row < 4; row++) { if (item[col][row] != old[col][row]) { throw new Exception(); } } } } interval2 = DateTime.Now.Ticks - startTick; } Console.WriteLine("Ticks: safe: {0} vs unsafe: {1}", interval, interval2); } // 立即释放所有非托管数组占用的内存,任何之前创建的UnmanagedBase数组都不再可用了。 UnmanagedArray <int> .FreeAll(); }
internal static void TypicalScene() { // 数组较小时可按此方法使用UnmanagedArray,数组较大时请参考UnmanagedArrayHelper。 const int count = 100; // 测试float类型 { var floatArray = new UnmanagedArray <float>(count); for (int i = 0; i < count; i++) { floatArray[i] = i; } for (int i = 0; i < count; i++) { var item = floatArray[i]; if (item != i) { throw new Exception(); } } } // 测试decimal类型 { var decimalArray = new UnmanagedArray <decimal>(count); for (int i = 0; i < count; i++) { decimalArray[i] = i; } for (int i = 0; i < count; i++) { var item = decimalArray[i]; if (item != i) { throw new Exception(); } } } // 测试int类型 { var intArray = new UnmanagedArray <int>(count); for (int i = 0; i < count; i++) { intArray[i] = i; } for (int i = 0; i < count; i++) { var item = intArray[i]; if (item != i) { throw new Exception(); } } } // 测试bool类型 { var boolArray = new UnmanagedArray <bool>(count); for (int i = 0; i < count; i++) { boolArray[i] = i % 2 == 0; } for (int i = 0; i < count; i++) { var item = boolArray[i]; if (item != (i % 2 == 0)) { throw new Exception(); } } } // 测试vec3类型 { var vec3Array = new UnmanagedArray <vec3>(count); for (int i = 0; i < count; i++) { vec3Array[i] = new vec3(i * 3 + 0, i * 3 + 1, i * 3 + 2); } for (int i = 0; i < count; i++) { var item = vec3Array[i]; var old = new vec3(i * 3 + 0, i * 3 + 1, i * 3 + 2); if (item.x != old.x || item.y != old.y || item.z != old.z) { throw new Exception(); } } // 释放此数组占用的内存,这之后就不能再使用vec3Array了。 vec3Array.Dispose(); } // 速度较慢,不再使用。 //// 测试foreach //foreach (var item in vec3Array.Elements()) //{ // Console.WriteLine(item); //} // 立即释放所有非托管数组占用的内存,任何之前创建的UnmanagedBase数组都不再可用了。 UnmanagedArray <int> .FreeAll(); }