END_TEST
/*
* odd size (10)
*/
START_TEST(test_ring_buffer3)
{
qb_ringbuffer_t *t;
int32_t i;
char v[] = "1234567891";
char out[32];
ssize_t l;
size_t len = strlen(v) + 1;
t = qb_rb_open("test3", 10, QB_RB_FLAG_CREATE | QB_RB_FLAG_OVERWRITE, 0);
fail_if(t == NULL);
for (i = 0; i < 9000; i++) {
l = qb_rb_chunk_write(t, v, len);
ck_assert_int_eq(l, len);
}
for (i = 0; i < 2000; i++) {
l = qb_rb_chunk_read(t, (void *)out, 32, 0);
if (l < 0) {
/* no more to read */
break;
}
ck_assert_int_eq(l, len);
ck_assert_str_eq(v, out);
}
qb_rb_close(t);
}
END_TEST
START_TEST(test_ring_buffer4)
{
qb_ringbuffer_t *t;
char data[] = "1234567891";
int32_t i;
char *new_data;
ssize_t l;
t = qb_rb_open("test4", 10, QB_RB_FLAG_CREATE | QB_RB_FLAG_OVERWRITE, 0);
fail_if(t == NULL);
for (i = 0; i < 2000; i++) {
l = qb_rb_chunk_write(t, data, strlen(data));
ck_assert_int_eq(l, strlen(data));
if (i == 0) {
data[0] = 'b';
}
}
for (i = 0; i < 2000; i++) {
l = qb_rb_chunk_peek(t, (void **)&new_data, 0);
if (l == 0) {
break;
}
ck_assert_int_eq(l, strlen(data));
qb_rb_chunk_reclaim(t);
}
qb_rb_close(t);
}
int32_t main(int32_t argc, char *argv[])
{
const char *options = "vh";
int32_t opt;
int32_t verbose = 0;
while ((opt = getopt(argc, argv, options)) != -1) {
switch (opt) {
case 'v':
verbose++;
break;
case 'h':
default:
show_usage(argv[0]);
exit(0);
break;
}
}
signal(SIGINT, sigterm_handler);
qb_log_init("rbwriter", LOG_USER, LOG_EMERG);
qb_log_ctl(QB_LOG_SYSLOG, QB_LOG_CONF_ENABLED, QB_FALSE);
qb_log_filter_ctl(QB_LOG_STDERR, QB_LOG_FILTER_ADD,
QB_LOG_FILTER_FILE, "*", LOG_INFO + verbose);
qb_log_ctl(QB_LOG_STDERR, QB_LOG_CONF_ENABLED, QB_TRUE);
rb = qb_rb_open("tester", ONE_MEG * 3,
QB_RB_FLAG_SHARED_PROCESS, 0);
do_throughput_benchmark();
qb_rb_close(rb);
return EXIT_SUCCESS;
}
static void bmc_connect(void)
{
rb = qb_rb_open("tester", BUFFER_CHUNK_SIZE * 3,
QB_RB_FLAG_SHARED_PROCESS, 0);
if (rb == NULL) {
qb_perror(LOG_ERR, "failed to create ringbuffer");
exit(1);
}
}
static void
_blackbox_reload(int32_t target)
{
struct qb_log_target *t = qb_log_target_get(target);
if (t->instance == NULL) {
return;
}
qb_rb_close(t->instance);
t->instance = qb_rb_open(t->filename, t->size,
QB_RB_FLAG_CREATE | QB_RB_FLAG_OVERWRITE, 0);
}
int32_t
qb_log_blackbox_open(struct qb_log_target *t)
{
if (t->size < 1024) {
return -EINVAL;
}
snprintf(t->filename, PATH_MAX, "%s-%d-blackbox", t->name, getpid());
t->instance = qb_rb_open(t->filename, t->size,
QB_RB_FLAG_CREATE | QB_RB_FLAG_OVERWRITE, 0);
if (t->instance == NULL) {
return -errno;
}
t->logger = NULL;
t->vlogger = _blackbox_vlogger;
t->reload = _blackbox_reload;
t->close = _blackbox_close;
return 0;
}
END_TEST
/*
* nice size (int64)
*/
START_TEST(test_ring_buffer2)
{
qb_ringbuffer_t *t;
int32_t i;
int64_t v = 7891034;
int64_t *new_data;
ssize_t l;
t = qb_rb_open("test2", 200 * sizeof(int64_t), QB_RB_FLAG_CREATE, 0);
fail_if(t == NULL);
for (i = 0; i < 200; i++) {
l = qb_rb_chunk_write(t, &v, sizeof(v));
ck_assert_int_eq(l, sizeof(v));
}
for (i = 0; i < 100; i++) {
l = qb_rb_chunk_peek(t, (void **)&new_data, 0);
ck_assert_int_eq(l, sizeof(v));
fail_unless(v == *new_data);
qb_rb_chunk_reclaim(t);
}
for (i = 0; i < 100; i++) {
l = qb_rb_chunk_write(t, &v, sizeof(v));
ck_assert_int_eq(l, sizeof(v));
}
for (i = 0; i < 100; i++) {
l = qb_rb_chunk_peek(t, (void **)&new_data, 0);
if (l == 0) {
/* no more to read */
break;
}
ck_assert_int_eq(l, sizeof(v));
fail_unless(v == *new_data);
qb_rb_chunk_reclaim(t);
}
qb_rb_close(t);
}
qb_ringbuffer_t *
qb_rb_create_from_file(int32_t fd, uint32_t flags)
{
ssize_t n_read;
size_t n_required;
size_t total_read = 0;
uint32_t read_pt;
uint32_t write_pt;
struct qb_ringbuffer_s *rb;
uint32_t word_size = 0;
uint32_t version = 0;
uint32_t hash = 0;
uint32_t calculated_hash = 0;
if (fd < 0) {
return NULL;
}
/*
* 1. word size
*/
n_required = sizeof(uint32_t);
n_read = read(fd, &word_size, n_required);
if (n_read != n_required) {
qb_util_perror(LOG_ERR, "Unable to read blackbox file header");
return NULL;
}
total_read += n_read;
/*
* 2. 3. read & write pointers
*/
n_read = read(fd, &write_pt, sizeof(uint32_t));
assert(n_read == sizeof(uint32_t));
total_read += n_read;
n_read = read(fd, &read_pt, sizeof(uint32_t));
assert(n_read == sizeof(uint32_t));
total_read += n_read;
/*
* 4. version
*/
n_required = sizeof(uint32_t);
n_read = read(fd, &version, n_required);
if (n_read != n_required) {
qb_util_perror(LOG_ERR, "Unable to read blackbox file header");
return NULL;
}
total_read += n_read;
/*
* 5. Hash
*/
n_required = sizeof(uint32_t);
n_read = read(fd, &hash, n_required);
if (n_read != n_required) {
qb_util_perror(LOG_ERR, "Unable to read blackbox file header");
return NULL;
}
total_read += n_read;
calculated_hash = word_size + write_pt + read_pt + version;
if (hash != calculated_hash) {
qb_util_log(LOG_ERR, "Corrupt blackbox: File header hash (%d) does not match calculated hash (%d)", hash, calculated_hash);
return NULL;
} else if (version != QB_RB_FILE_HEADER_VERSION) {
qb_util_log(LOG_ERR, "Wrong file header version. Expected %d got %d",
QB_RB_FILE_HEADER_VERSION, version);
return NULL;
}
/*
* 6. data
*/
n_required = (word_size * sizeof(uint32_t));
/*
* qb_rb_open adds QB_RB_CHUNK_MARGIN + 1 to the requested size.
*/
rb = qb_rb_open("create_from_file", n_required - (QB_RB_CHUNK_MARGIN + 1),
QB_RB_FLAG_CREATE | QB_RB_FLAG_NO_SEMAPHORE, 0);
if (rb == NULL) {
return NULL;
}
rb->shared_hdr->read_pt = read_pt;
rb->shared_hdr->write_pt = write_pt;
n_read = read(fd, rb->shared_data, n_required);
if (n_read < 0) {
qb_util_perror(LOG_ERR, "Unable to read blackbox file data");
goto cleanup_fail;
}
total_read += n_read;
if (n_read != n_required) {
qb_util_log(LOG_WARNING, "read %zd bytes, but expected %zu",
n_read, n_required);
goto cleanup_fail;
}
qb_util_log(LOG_DEBUG, "read total of: %zd", total_read);
print_header(rb);
return rb;
cleanup_fail:
qb_rb_close(rb);
return NULL;
}
