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#include "util.h"
#include <stdlib.h>
#include <linux/types.h>
#include <sys/stat.h>
#include <fcntl.h>
#include <string.h>
#include "machine.h"
#include "symbol.h"
#include "tests.h"
static char *test_file(int size)
{
static char buf_templ[] = "/tmp/test-XXXXXX";
char *templ = buf_templ;
int fd, i;
unsigned char *buf;
fd = mkstemp(templ);
if (fd < 0) {
perror("mkstemp failed");
return NULL;
}
buf = malloc(size);
if (!buf) {
close(fd);
return NULL;
}
for (i = 0; i < size; i++)
buf[i] = (unsigned char) ((int) i % 10);
if (size != write(fd, buf, size))
templ = NULL;
free(buf);
close(fd);
return templ;
}
#define TEST_FILE_SIZE (DSO__DATA_CACHE_SIZE * 20)
struct test_data_offset {
off_t offset;
u8 data[10];
int size;
};
struct test_data_offset offsets[] = {
/* Fill first cache page. */
{
.offset = 10,
.data = { 0, 1, 2, 3, 4, 5, 6, 7, 8, 9 },
.size = 10,
},
/* Read first cache page. */
{
.offset = 10,
.data = { 0, 1, 2, 3, 4, 5, 6, 7, 8, 9 },
.size = 10,
},
/* Fill cache boundary pages. */
{
.offset = DSO__DATA_CACHE_SIZE - DSO__DATA_CACHE_SIZE % 10,
.data = { 0, 1, 2, 3, 4, 5, 6, 7, 8, 9 },
.size = 10,
},
/* Read cache boundary pages. */
{
.offset = DSO__DATA_CACHE_SIZE - DSO__DATA_CACHE_SIZE % 10,
.data = { 0, 1, 2, 3, 4, 5, 6, 7, 8, 9 },
.size = 10,
},
/* Fill final cache page. */
{
.offset = TEST_FILE_SIZE - 10,
.data = { 0, 1, 2, 3, 4, 5, 6, 7, 8, 9 },
.size = 10,
},
/* Read final cache page. */
{
.offset = TEST_FILE_SIZE - 10,
.data = { 0, 1, 2, 3, 4, 5, 6, 7, 8, 9 },
.size = 10,
},
/* Read final cache page. */
{
.offset = TEST_FILE_SIZE - 3,
.data = { 7, 8, 9, 0, 0, 0, 0, 0, 0, 0 },
.size = 3,
},
};
int test__dso_data(void)
{
struct machine machine;
struct dso *dso;
char *file = test_file(TEST_FILE_SIZE);
size_t i;
TEST_ASSERT_VAL("No test file", file);
memset(&machine, 0, sizeof(machine));
dso = dso__new((const char *)file);
/* Basic 10 bytes tests. */
for (i = 0; i < ARRAY_SIZE(offsets); i++) {
struct test_data_offset *data = &offsets[i];
ssize_t size;
u8 buf[10];
memset(buf, 0, 10);
size = dso__data_read_offset(dso, &machine, data->offset,
buf, 10);
TEST_ASSERT_VAL("Wrong size", size == data->size);
TEST_ASSERT_VAL("Wrong data", !memcmp(buf, data->data, 10));
}
/* Read cross multiple cache pages. */
{
ssize_t size;
int c;
u8 *buf;
buf = malloc(TEST_FILE_SIZE);
TEST_ASSERT_VAL("ENOMEM\n", buf);
/* First iteration to fill caches, second one to read them. */
for (c = 0; c < 2; c++) {
memset(buf, 0, TEST_FILE_SIZE);
size = dso__data_read_offset(dso, &machine, 10,
buf, TEST_FILE_SIZE);
TEST_ASSERT_VAL("Wrong size",
size == (TEST_FILE_SIZE - 10));
for (i = 0; i < (size_t)size; i++)
TEST_ASSERT_VAL("Wrong data",
buf[i] == (i % 10));
}
free(buf);
}
dso__delete(dso);
unlink(file);
return 0;
}
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