1 2 /* 3 * Copyright 2011 Google Inc. 4 * 5 * Use of this source code is governed by a BSD-style license that can be 6 * found in the LICENSE file. 7 */ 8 #include "Test.h" 9 #include "SkUtils.h" 10 11 static void set_zero(void* dst, size_t bytes) { 12 char* ptr = (char*)dst; 13 for (size_t i = 0; i < bytes; ++i) { 14 ptr[i] = 0; 15 } 16 } 17 18 #define MAX_ALIGNMENT 64 19 #define MAX_COUNT ((MAX_ALIGNMENT) * 32) 20 #define PAD 32 21 #define TOTAL (PAD + MAX_ALIGNMENT + MAX_COUNT + PAD) 22 23 #define VALUE16 0x1234 24 #define VALUE32 0x12345678 25 26 static bool compare16(const uint16_t base[], uint16_t value, int count) { 27 for (int i = 0; i < count; ++i) { 28 if (base[i] != value) { 29 SkDebugf("[%d] expected %x found %x\n", i, value, base[i]); 30 return false; 31 } 32 } 33 return true; 34 } 35 36 static bool compare32(const uint32_t base[], uint32_t value, int count) { 37 for (int i = 0; i < count; ++i) { 38 if (base[i] != value) { 39 SkDebugf("[%d] expected %x found %x\n", i, value, base[i]); 40 return false; 41 } 42 } 43 return true; 44 } 45 46 static void test_16(skiatest::Reporter* reporter) { 47 uint16_t buffer[TOTAL]; 48 49 for (int count = 0; count < MAX_COUNT; ++count) { 50 for (int alignment = 0; alignment < MAX_ALIGNMENT; ++alignment) { 51 set_zero(buffer, sizeof(buffer)); 52 53 uint16_t* base = &buffer[PAD + alignment]; 54 sk_memset16(base, VALUE16, count); 55 56 compare16(buffer, 0, PAD + alignment); 57 compare16(base, VALUE16, count); 58 compare16(base + count, 0, TOTAL - count - PAD - alignment); 59 } 60 } 61 } 62 63 static void test_32(skiatest::Reporter* reporter) { 64 uint32_t buffer[TOTAL]; 65 66 for (int count = 0; count < MAX_COUNT; ++count) { 67 for (int alignment = 0; alignment < MAX_ALIGNMENT; ++alignment) { 68 set_zero(buffer, sizeof(buffer)); 69 70 uint32_t* base = &buffer[PAD + alignment]; 71 sk_memset32(base, VALUE32, count); 72 73 compare32(buffer, 0, PAD + alignment); 74 compare32(base, VALUE32, count); 75 compare32(base + count, 0, TOTAL - count - PAD - alignment); 76 } 77 } 78 } 79 80 /** 81 * Test sk_memset16 and sk_memset32. 82 * For performance considerations, implementations may take different paths 83 * depending on the alignment of the dst, and/or the size of the count. 84 */ 85 static void TestMemset(skiatest::Reporter* reporter) { 86 test_16(reporter); 87 test_32(reporter); 88 }; 89 90 #include "TestClassDef.h" 91 DEFINE_TESTCLASS("Memset", TestMemsetClass, TestMemset) 92
