1 #include "util.h" 2 3 #include <stdlib.h> 4 #include <sys/types.h> 5 #include <sys/stat.h> 6 #include <fcntl.h> 7 #include <string.h> 8 9 #include "machine.h" 10 #include "symbol.h" 11 #include "tests.h" 12 13 static char *test_file(int size) 14 { 15 static char buf_templ[] = "/tmp/test-XXXXXX"; 16 char *templ = buf_templ; 17 int fd, i; 18 unsigned char *buf; 19 20 fd = mkstemp(templ); 21 if (fd < 0) { 22 perror("mkstemp failed"); 23 return NULL; 24 } 25 26 buf = malloc(size); 27 if (!buf) { 28 close(fd); 29 return NULL; 30 } 31 32 for (i = 0; i < size; i++) 33 buf[i] = (unsigned char) ((int) i % 10); 34 35 if (size != write(fd, buf, size)) 36 templ = NULL; 37 38 close(fd); 39 return templ; 40 } 41 42 #define TEST_FILE_SIZE (DSO__DATA_CACHE_SIZE * 20) 43 44 struct test_data_offset { 45 off_t offset; 46 u8 data[10]; 47 int size; 48 }; 49 50 struct test_data_offset offsets[] = { 51 /* Fill first cache page. */ 52 { 53 .offset = 10, 54 .data = { 0, 1, 2, 3, 4, 5, 6, 7, 8, 9 }, 55 .size = 10, 56 }, 57 /* Read first cache page. */ 58 { 59 .offset = 10, 60 .data = { 0, 1, 2, 3, 4, 5, 6, 7, 8, 9 }, 61 .size = 10, 62 }, 63 /* Fill cache boundary pages. */ 64 { 65 .offset = DSO__DATA_CACHE_SIZE - DSO__DATA_CACHE_SIZE % 10, 66 .data = { 0, 1, 2, 3, 4, 5, 6, 7, 8, 9 }, 67 .size = 10, 68 }, 69 /* Read cache boundary pages. */ 70 { 71 .offset = DSO__DATA_CACHE_SIZE - DSO__DATA_CACHE_SIZE % 10, 72 .data = { 0, 1, 2, 3, 4, 5, 6, 7, 8, 9 }, 73 .size = 10, 74 }, 75 /* Fill final cache page. */ 76 { 77 .offset = TEST_FILE_SIZE - 10, 78 .data = { 0, 1, 2, 3, 4, 5, 6, 7, 8, 9 }, 79 .size = 10, 80 }, 81 /* Read final cache page. */ 82 { 83 .offset = TEST_FILE_SIZE - 10, 84 .data = { 0, 1, 2, 3, 4, 5, 6, 7, 8, 9 }, 85 .size = 10, 86 }, 87 /* Read final cache page. */ 88 { 89 .offset = TEST_FILE_SIZE - 3, 90 .data = { 7, 8, 9, 0, 0, 0, 0, 0, 0, 0 }, 91 .size = 3, 92 }, 93 }; 94 95 int test__dso_data(void) 96 { 97 struct machine machine; 98 struct dso *dso; 99 char *file = test_file(TEST_FILE_SIZE); 100 size_t i; 101 102 TEST_ASSERT_VAL("No test file", file); 103 104 memset(&machine, 0, sizeof(machine)); 105 106 dso = dso__new((const char *)file); 107 108 /* Basic 10 bytes tests. */ 109 for (i = 0; i < ARRAY_SIZE(offsets); i++) { 110 struct test_data_offset *data = &offsets[i]; 111 ssize_t size; 112 u8 buf[10]; 113 114 memset(buf, 0, 10); 115 size = dso__data_read_offset(dso, &machine, data->offset, 116 buf, 10); 117 118 TEST_ASSERT_VAL("Wrong size", size == data->size); 119 TEST_ASSERT_VAL("Wrong data", !memcmp(buf, data->data, 10)); 120 } 121 122 /* Read cross multiple cache pages. */ 123 { 124 ssize_t size; 125 int c; 126 u8 *buf; 127 128 buf = malloc(TEST_FILE_SIZE); 129 TEST_ASSERT_VAL("ENOMEM\n", buf); 130 131 /* First iteration to fill caches, second one to read them. */ 132 for (c = 0; c < 2; c++) { 133 memset(buf, 0, TEST_FILE_SIZE); 134 size = dso__data_read_offset(dso, &machine, 10, 135 buf, TEST_FILE_SIZE); 136 137 TEST_ASSERT_VAL("Wrong size", 138 size == (TEST_FILE_SIZE - 10)); 139 140 for (i = 0; i < (size_t)size; i++) 141 TEST_ASSERT_VAL("Wrong data", 142 buf[i] == (i % 10)); 143 } 144 145 free(buf); 146 } 147 148 dso__delete(dso); 149 unlink(file); 150 return 0; 151 } 152
