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