/*START_OF_MAIN*/
int main()
{
int i=0;
combine_type person_info;
read_and_write("person_info.txt","person_info.bin");
read_binary("person_info.bin",person_info);
return 0;
/*END_OF_MAIN*/
}
static int gen_multy_bakup_files(b_fil* file_list, FILE_DESC input_file_desc, SLONG file_num)
{
/********************************************************************
**
** g e n _ m u l t y _ b a c k u p _ f i l e s
**
*********************************************************************
**
** Functional description:
**
** processing input data from stdin and splits the data into
** multiple back-up files.
**
** allocates an 16K bytes I/O buffer
** intilializes header record common fields
** do forever
** walk through the backup file chain
** intilializes header record unique fields
** open backup file
** writes out header record to backup file
** points to the next backup file in the chain
** calculates the actual file size ( minus header record length )
** if the actual file size less than 16K bytes
** set I/O size to actual file size
** otherwise
** set I/O size to 16K byte long
** when it is the last backup file
** reads data from standard input as much as indicated by I/O size
** and writes it out to the last backup file until no EOF.
** issues error message when disk space full condition is detected
** otherwise reads and writes to backup files util EOF
** if disk full cobdition is detected
** flush the remaining data in the I/O buffer to subsequence
** backup files
** go back to normal read and write process util EOF
**
*********************************************************************
*/
SLONG byte_write, ret_cd;
TEXT header_str[header_rec_len], num_arr[5];
header_rec hdr_rec;
// CVC: there's a can of worms here. First, this function assumes it can free
// the io_buffer's allocated memory without keeping a second copy of that pointer.
// However, io_buffer can't be declared UCHAR* const because its address is
// passed to final_read_and_write() and read_and_write() and both functions
// thus suggest, by taking a UCHAR** that they can change the pointer's address;
// but in practice they never affect it, so fixing those functions to take simply
// UCHAR* would allow the correct declaration for io_buffer to succeed.
//UCHAR* const io_buffer = (UCHAR *) malloc(IO_BUFFER_SIZE);
UCHAR* io_buffer = (UCHAR *) malloc(IO_BUFFER_SIZE);
if (!io_buffer)
{
fprintf(stderr, "I/O buffer allocation failed\n");
return FB_FAILURE;
}
size_t pos;
for (pos = 0; pos < header_rec_len; pos++)
header_str[pos] = BLANK;
pos = 0;
ret_cd = set_hdr_str(header_str, header_rec_name, pos, sizeof(hdr_rec.name));
size_t indx;
for (indx = 0; indx < sizeof(hdr_rec.name); indx++)
hdr_rec.name[indx] = BLANK;
pos = pos + sizeof(hdr_rec.name);
time_t clock = time(0); // was SLONG
ret_cd = set_hdr_str(header_str, ctime(&clock), pos, sizeof(hdr_rec.date_time));
for (indx = 0; indx < sizeof(hdr_rec.date_time); indx++)
hdr_rec.date_time[indx] = BLANK;
pos = pos + sizeof(hdr_rec.date_time);
ret_cd = set_hdr_str(header_str, ", file No. ", pos, sizeof(hdr_rec.text1));
for (indx = 0; indx < sizeof(hdr_rec.text1); indx++)
hdr_rec.text1[indx] = BLANK;
for (indx = 0; indx < sizeof(hdr_rec.num); indx++)
hdr_rec.num[indx] = BLANK;
pos = pos + sizeof(hdr_rec.text1) + sizeof(hdr_rec.num);
ret_cd = set_hdr_str(header_str, " of ", pos, sizeof(hdr_rec.text2));
for (indx = 0; indx < sizeof(hdr_rec.text2); indx++)
hdr_rec.text2[indx] = BLANK;
ret_cd = conv_ntoc(file_num, num_arr);
if (ret_cd == FB_FAILURE)
{
free(io_buffer);
fprintf(stderr, "gsplit could not convert numeric data to character data\n");
return FB_FAILURE;
}
num_arr[sizeof(num_arr) - 1] = TERMINAL;
pos = pos + sizeof(hdr_rec.text2);
ret_cd = set_hdr_str(header_str, num_arr, pos, sizeof(hdr_rec.total));
for (indx = 0; indx < sizeof(hdr_rec.total); indx++)
hdr_rec.total[indx] = BLANK;
pos = pos + sizeof(hdr_rec.total);
ret_cd = set_hdr_str(header_str, ", ", pos, sizeof(hdr_rec.text3));
for (indx = 0; indx < sizeof(hdr_rec.text3); indx++)
hdr_rec.text3[indx] = BLANK;
for (indx = 0; indx < sizeof(hdr_rec.fl_name); indx++)
hdr_rec.fl_name[indx] = BLANK;
FILE_DESC output_fl_desc = 0;
bool end_of_input = false, flush_done = false;
const TEXT* file_name = NULL;
SLONG io_size = 0;
b_fil* fl_ptr = file_list;
SINT64 byte_read = 0;
SINT64 file_size = 0;
while (true)
{
if (fl_ptr != NULL)
{
byte_read = 0;
byte_write = 0;
if (!fl_ptr->b_fil_next && (fl_ptr->b_fil_size == 0))
{
fl_ptr->b_fil_size = MIN_FILE_SIZE;
}
file_size = fl_ptr->b_fil_size - header_rec_len;
file_name = fl_ptr->b_fil_name;
output_fl_desc = open_platf(file_name, 1);
if (output_fl_desc == INVALID_HANDLE_VALUE)
{
free(io_buffer);
fprintf(stderr, "can not open back up file %s\n", file_name);
return FB_FAILURE;
}
ret_cd = write_header(fl_ptr, hdr_rec, output_fl_desc, header_str);
if (ret_cd == FB_FAILURE)
{
free(io_buffer);
fprintf(stderr, "could not write header record to file %s\n", file_name);
return FB_FAILURE;
}
fl_ptr = fl_ptr->b_fil_next;
}
if (file_size < IO_BUFFER_SIZE)
io_size = (SLONG) file_size;
else
io_size = IO_BUFFER_SIZE;
if (!fl_ptr)
{
while (!end_of_input)
{
ret_cd = final_read_and_write(input_file_desc, output_fl_desc,
file_name, io_size, &io_buffer, &end_of_input);
if (ret_cd == FB_FAILURE)
{
free(io_buffer);
return FB_FAILURE;
}
if (end_of_input)
{
free(io_buffer);
return FB_SUCCESS;
}
}
}
else
{
while ((file_size > byte_read) && (fl_ptr != NULL))
{
ret_cd = read_and_write(input_file_desc, output_fl_desc,
/*file_name,*/ io_size, file_size,
&io_buffer, &end_of_input,
&byte_read, &byte_write);
switch (ret_cd)
{
case FB_FAILURE:
free(io_buffer);
return FB_FAILURE;
case FILE_IS_FULL:
{
byte_read = 0; // reset byte read count, prepare for next read
const UCHAR* remaining_io = io_buffer + byte_write;
SLONG remaining_io_len = IO_BUFFER_SIZE - byte_write;
while (!flush_done && (fl_ptr != NULL))
{
if (!fl_ptr->b_fil_next && fl_ptr->b_fil_size == 0)
fl_ptr->b_fil_size = MIN_FILE_SIZE;
file_size = fl_ptr->b_fil_size - header_rec_len;
file_name = fl_ptr->b_fil_name;
output_fl_desc = open_platf(file_name, 1);
if (output_fl_desc == INVALID_HANDLE_VALUE)
{
free(io_buffer);
fprintf(stderr, "can not open back up file %s\n", file_name);
return FB_FAILURE;
}
ret_cd = write_header(fl_ptr, hdr_rec, output_fl_desc, header_str);
if (ret_cd == FB_FAILURE)
{
free(io_buffer);
fprintf(stderr, "fail to write header rec to file %s\n", file_name);
return FB_FAILURE;
}
fl_ptr = fl_ptr->b_fil_next;
if (!fl_ptr)
{
ret_cd = final_flush_io_buff(remaining_io,
remaining_io_len,
output_fl_desc);
if (ret_cd == FB_FAILURE)
{
fprintf(stderr, "gsplit could not do backup due");
fprintf(stderr, " to lack of space or I/O problem\n");
free(io_buffer);
return FB_FAILURE;
}
}
else
{
// got a lot of backup files
ret_cd = flush_io_buff(remaining_io,
remaining_io_len,
output_fl_desc,
file_size,
&byte_write,
&flush_done);
if (ret_cd == FB_FAILURE)
{
fprintf(stderr, "gsplit could not do backup due");
fprintf(stderr, " I/O problem\n");
free(io_buffer);
return FB_FAILURE;
}
if (flush_done)
{
file_size = file_size - byte_write;
byte_write = 0;
}
else
{
remaining_io = remaining_io + byte_write;
remaining_io_len = remaining_io_len - byte_write;
}
}
} // end of while loop
break;
} // case FILE_IS_FULL
default:
break;
}
if (end_of_input)
{
free(io_buffer);
return FB_SUCCESS;
}
}
}
} // end of while ( true )
}
static gpointer
worker_thread(
gpointer data)
{
XferElement *elt = XFER_ELEMENT(data);
XferElementGlue *self = XFER_ELEMENT_GLUE(data);
switch (mech_pair(elt->input_mech, elt->output_mech)) {
case mech_pair(XFER_MECH_READFD, XFER_MECH_WRITEFD):
read_and_write(self);
break;
case mech_pair(XFER_MECH_READFD, XFER_MECH_PUSH_BUFFER):
case mech_pair(XFER_MECH_WRITEFD, XFER_MECH_PUSH_BUFFER):
read_and_push(self);
break;
case mech_pair(XFER_MECH_PULL_BUFFER, XFER_MECH_READFD):
case mech_pair(XFER_MECH_PULL_BUFFER, XFER_MECH_WRITEFD):
pull_and_write(self);
break;
case mech_pair(XFER_MECH_PULL_BUFFER, XFER_MECH_PUSH_BUFFER):
pull_and_push(self);
break;
case mech_pair(XFER_MECH_READFD, XFER_MECH_DIRECTTCP_LISTEN):
case mech_pair(XFER_MECH_WRITEFD, XFER_MECH_DIRECTTCP_LISTEN):
if ((self->output_data_socket = do_directtcp_connect(self,
elt->downstream->input_listen_addrs)) == -1)
break;
self->write_fdp = &self->output_data_socket;
read_and_write(self);
break;
case mech_pair(XFER_MECH_PULL_BUFFER, XFER_MECH_DIRECTTCP_LISTEN):
if ((self->output_data_socket = do_directtcp_connect(self,
elt->downstream->input_listen_addrs)) == -1)
break;
self->write_fdp = &self->output_data_socket;
pull_and_write(self);
break;
case mech_pair(XFER_MECH_DIRECTTCP_LISTEN, XFER_MECH_READFD):
case mech_pair(XFER_MECH_DIRECTTCP_LISTEN, XFER_MECH_WRITEFD):
if ((self->input_data_socket = do_directtcp_accept(self, &self->input_listen_socket)) == -1)
break;
self->read_fdp = &self->input_data_socket;
read_and_write(self);
break;
case mech_pair(XFER_MECH_DIRECTTCP_LISTEN, XFER_MECH_PUSH_BUFFER):
if ((self->input_data_socket = do_directtcp_accept(self,
&self->input_listen_socket)) == -1)
break;
self->read_fdp = &self->input_data_socket;
read_and_push(self);
break;
case mech_pair(XFER_MECH_DIRECTTCP_CONNECT, XFER_MECH_PULL_BUFFER):
case mech_pair(XFER_MECH_DIRECTTCP_LISTEN, XFER_MECH_PULL_BUFFER):
case mech_pair(XFER_MECH_READFD, XFER_MECH_PULL_BUFFER):
case mech_pair(XFER_MECH_WRITEFD, XFER_MECH_READFD):
case mech_pair(XFER_MECH_WRITEFD, XFER_MECH_PULL_BUFFER):
case mech_pair(XFER_MECH_PUSH_BUFFER, XFER_MECH_READFD):
case mech_pair(XFER_MECH_PUSH_BUFFER, XFER_MECH_WRITEFD):
case mech_pair(XFER_MECH_PUSH_BUFFER, XFER_MECH_PULL_BUFFER):
case mech_pair(XFER_MECH_PUSH_BUFFER, XFER_MECH_DIRECTTCP_LISTEN):
case mech_pair(XFER_MECH_PUSH_BUFFER, XFER_MECH_DIRECTTCP_CONNECT):
default:
g_assert_not_reached();
break;
case mech_pair(XFER_MECH_WRITEFD, XFER_MECH_DIRECTTCP_CONNECT):
case mech_pair(XFER_MECH_READFD, XFER_MECH_DIRECTTCP_CONNECT):
if ((self->output_data_socket = do_directtcp_accept(self,
&self->output_listen_socket)) == -1)
break;
self->write_fdp = &self->output_data_socket;
read_and_write(self);
break;
case mech_pair(XFER_MECH_DIRECTTCP_CONNECT, XFER_MECH_WRITEFD):
case mech_pair(XFER_MECH_DIRECTTCP_CONNECT, XFER_MECH_READFD):
if ((self->input_data_socket = do_directtcp_connect(self,
elt->upstream->output_listen_addrs)) == -1)
break;
self->read_fdp = &self->input_data_socket;
read_and_write(self);
break;
case mech_pair(XFER_MECH_DIRECTTCP_CONNECT, XFER_MECH_PUSH_BUFFER):
if ((self->input_data_socket = do_directtcp_connect(self,
elt->upstream->output_listen_addrs)) == -1)
break;
self->read_fdp = &self->input_data_socket;
read_and_push(self);
break;
case mech_pair(XFER_MECH_PULL_BUFFER, XFER_MECH_DIRECTTCP_CONNECT):
if ((self->output_data_socket = do_directtcp_accept(self,
&self->output_listen_socket)) == -1)
break;
self->write_fdp = &self->output_data_socket;
pull_and_write(self);
break;
case mech_pair(XFER_MECH_DIRECTTCP_LISTEN, XFER_MECH_DIRECTTCP_CONNECT):
/* TODO: use async accept's here to avoid order dependency */
if ((self->output_data_socket = do_directtcp_accept(self,
&self->output_listen_socket)) == -1)
break;
self->write_fdp = &self->output_data_socket;
if ((self->input_data_socket = do_directtcp_accept(self,
&self->input_listen_socket)) == -1)
break;
self->read_fdp = &self->input_data_socket;
read_and_write(self);
break;
case mech_pair(XFER_MECH_DIRECTTCP_CONNECT, XFER_MECH_DIRECTTCP_LISTEN):
/* TODO: use async connects and select() to avoid order dependency here */
if ((self->input_data_socket = do_directtcp_connect(self,
elt->upstream->output_listen_addrs)) == -1)
break;
self->read_fdp = &self->input_data_socket;
if ((self->output_data_socket = do_directtcp_connect(self,
elt->downstream->input_listen_addrs)) == -1)
break;
self->write_fdp = &self->output_data_socket;
read_and_write(self);
break;
}
send_xfer_done(self);
return NULL;
}
static int write_wrapper(struct asfd *asfd, struct iobuf *wbuf)
{
while(asfd->append_all_to_write_buffer(asfd, wbuf))
if(read_and_write(asfd)) return -1;
return 0;
}
static int flush_asio(struct asfd *asfd)
{
while(asfd->writebuflen>0)
if(read_and_write(asfd)) return -1;
return 0;
}
int
main(int argc, char **argv)
{
static const struct option longopts[] = {
{ "help", 0, 0, 'h' },
{ "verbose", 0, 0, 'v' },
{ "listen", 0, 0, 'l' },
{ "connect", 0, 0, 'c' },
{ "node", 1, 0, 'n' },
{ "host", 1, 0, 'n' },
{ "service", 1, 0, 's' },
{ "family", 1, 0, 'f' },
{ "socktype", 1, 0, 't' },
{ "ping", 0, 0, 'I' },
{ "protocol", 1, 0, 'p' },
{ "backends", 1, 0, 'b' },
{ "srv", 0, 0, 'S' },
{ "address", 1, 0, 'a' },
{ "port", 1, 0, 'P' },
{ "class", 1, 0, 'C' },
{ "type", 1, 0, 'T' },
{ NULL, 0, 0, 0 }
};
static const char *opts = "hvcn::s:f:t:p:b:Sa:P:";
int opt, idx = 0;
bool do_connect = false;
bool do_listen = false;
bool ping = false;
char *nodename = NULL, *servname = NULL;
char *address_str = NULL, *port_str = NULL;
int cls = ns_c_in, type = 0;
netresolve_t context;
netresolve_query_t query;
netresolve_set_log_level(NETRESOLVE_LOG_LEVEL_ERROR);
context = netresolve_context_new();
if (!context) {
error("netresolve: %s\n", strerror(errno));
return EXIT_FAILURE;
}
while ((opt = getopt_long(count_argv(argv), argv, opts, longopts, &idx)) != -1) {
switch (opt) {
case 'h':
usage();
case 'v':
netresolve_set_log_level(NETRESOLVE_LOG_LEVEL_DEBUG);
break;
case 'l':
do_listen = true;
break;
case 'c':
do_connect = true;
break;
case 'I':
ping = true;
break;
case 'n':
nodename = optarg;
break;
case 's':
servname = optarg;
break;
case 'f':
netresolve_context_set_options(context,
NETRESOLVE_OPTION_FAMILY, netresolve_family_from_string(optarg),
NETRESOLVE_OPTION_DONE);
break;
case 't':
netresolve_context_set_options(context,
NETRESOLVE_OPTION_SOCKTYPE, netresolve_socktype_from_string(optarg),
NETRESOLVE_OPTION_DONE);
break;
case 'p':
netresolve_context_set_options(context,
NETRESOLVE_OPTION_PROTOCOL, netresolve_protocol_from_string(optarg),
NETRESOLVE_OPTION_DONE);
break;
case 'b':
netresolve_set_backend_string(context, optarg);
break;
case 'S':
netresolve_context_set_options(context,
NETRESOLVE_OPTION_DNS_SRV_LOOKUP, (int) true,
NETRESOLVE_OPTION_DONE);
break;
case 'a':
address_str = optarg;
break;
case 'P':
port_str = optarg;
break;
case 'C':
#ifdef USE_LDNS
cls = ldns_get_rr_class_by_name(optarg);
#else
cls = strtoll(optarg, NULL, 10);
#endif
break;
case 'T':
#ifdef USE_LDNS
type = ldns_get_rr_type_by_name(optarg);
#else
type = strtoll(optarg, NULL, 10);
#endif
break;
default:
exit(EXIT_FAILURE);
}
}
if (argv[optind])
usage();
if (do_listen || do_connect) {
netresolve_query_t query;
int sock = -1;
struct pollfd fds[2];
/* Linux: I found an interesting inconsistency where zero socktype
* is supported by the kernel but not when combined with
* `SOCK_NONBLOCK` which is internally used by netresolve
* socket API implementation.
*/
if (!context->request.socktype && !context->request.protocol) {
context->request.socktype = SOCK_STREAM;
context->request.protocol = IPPROTO_TCP;
}
if (do_listen) {
if (!(query = netresolve_listen(context, nodename, servname, 0, 0, 0))) {
error("netresolve: Cannot create listening socket: %s", strerror(errno));
return EXIT_FAILURE;
}
netresolve_accept(query, on_accept, &sock);
} else {
query = netresolve_connect(context, nodename, servname, 0, 0, 0, on_socket, &sock);
while (sock == -1) {
error("netresolve: Socket connection failed: %s", strerror(errno));
if (errno == ENETUNREACH) {
netresolve_connect_next(query);
continue;
}
return EXIT_FAILURE;
}
netresolve_connect_free(query);
}
debug("Connected.");
fds[0].fd = 0;
fds[0].events = POLLIN;
fds[1].fd = sock;
fds[1].events = POLLIN;
while (true) {
if (poll(fds, 2, -1) == -1) {
fprintf(stderr, "poll: %s\n", strerror(errno));
break;
}
if (fds[0].revents & (POLLIN | POLLHUP))
read_and_write(0, sock, sock);
if (fds[1].revents & POLLIN)
read_and_write(sock, 1, sock);
}
return EXIT_SUCCESS;
} else if (type)
query = netresolve_query_dns(context, nodename, cls, type, NULL, NULL);
else if (address_str || port_str) {
Address address;
int family, ifindex;
if (!netresolve_backend_parse_address(address_str, &address, &family, &ifindex))
return EXIT_FAILURE;
query = netresolve_query_reverse(context, family, &address, ifindex, -1, port_str ? strtol(port_str, NULL, 10) : 0, NULL, NULL);
} else
query = netresolve_query_forward(context, nodename, servname, NULL, NULL);
if (!query) {
fprintf(stderr, "netresolve: %s\n", strerror(errno));
return EXIT_FAILURE;
}
debug("%s", netresolve_get_request_string(query));
if (ping) {
for (int i = 0; i < netresolve_query_get_count(query); i++)
if (run_ping(query, i))
goto out;
error("netresolve: ping failed");
goto out;
}
const char *response_string = netresolve_get_response_string(query);
char *dns_string = get_dns_string(query);
if (response_string)
printf("%s", response_string);
if (dns_string) {
printf("%s", dns_string);
free(dns_string);
}
out:
netresolve_context_free(context);
return EXIT_SUCCESS;
}
int main(int argc, char* argv[]) {
int which = 0;
data_t *heap_data = (data_t *)malloc(sizeof(data_t));
if (argc >= 2) {
which = atoi(argv[1]);
}
init(&global_data);
init(heap_data);
switch(which) {
case 0:
cilk_spawn increment_i(&global_data); // write, read race
mult_double(&global_data);
cilk_sync;
assert(__cilksan_error_count() == 3);
break;
case 1:
cilk_spawn mult_double(&global_data);
increment_i(&global_data); // write, read race
cilk_sync;
assert(__cilksan_error_count() == 3);
break;
case 2:
cilk_spawn mult_double(&global_data);
update_str(&global_data, 3, 8); // read, write race
cilk_sync;
assert(__cilksan_error_count() == 2);
break;
case 3:
cilk_spawn increment_i(&global_data); // write, read race
read_double(&global_data);
cilk_sync;
assert(__cilksan_error_count() == 1);
break;
case 4:
cilk_spawn read_double(&global_data);
increment_i(&global_data); // read, write race
cilk_sync;
assert(__cilksan_error_count() == 1);
break;
case 5:
cilk_spawn read_double(&global_data);
update_str(&global_data, 3, 8); // read, write race
cilk_sync;
assert(__cilksan_error_count() == 1);
break;
case 6:
cilk_spawn read_str(&global_data, 2, 4);
update_str(&global_data, 3, 8); // read, write race
cilk_sync;
assert(__cilksan_error_count() == 1);
break;
case 7:
cilk_spawn increment_i(heap_data); // write, read race
mult_double(heap_data);
cilk_sync;
assert(__cilksan_error_count() == 3);
break;
case 8:
cilk_spawn mult_double(heap_data);
increment_i(heap_data); // write, read race
cilk_sync;
assert(__cilksan_error_count() == 3);
break;
case 9:
cilk_spawn mult_double(heap_data);
update_str(heap_data, 3, 8); // write, write race
cilk_sync;
assert(__cilksan_error_count() == 2);
break;
case 10:
cilk_spawn increment_i(heap_data); // write, read race
read_double(heap_data);
cilk_sync;
assert(__cilksan_error_count() == 1);
break;
case 11:
cilk_spawn read_double(heap_data);
increment_i(heap_data); // read, write race
cilk_sync;
// to be sure that compiler doesn't optimize it away.
global_int = heap_data->i;
assert(__cilksan_error_count() == 1);
break;
case 12:
cilk_spawn read_double(heap_data);
update_str(heap_data, 3, 8); // read, write race
cilk_sync;
assert(__cilksan_error_count() == 1);
break;
case 13:
cilk_spawn update_str(heap_data, 8, 11);
read_str(heap_data, 10, 12); // write, read race
cilk_sync;
assert(__cilksan_error_count() == 1);
break;
case 14:
cilk_spawn update_str(&global_data, 8, 12); // no race
mult_double(&global_data);
cilk_sync;
assert(__cilksan_error_count() == 0);
break;
case 15:
cilk_spawn update_str(&global_data, 4, 12); // no race
read_i(&global_data);
cilk_sync;
assert(__cilksan_error_count() == 0);
break;
case 16:
cilk_spawn update_str(heap_data, 8, 12); // no race
mult_double(heap_data);
cilk_sync;
assert(__cilksan_error_count() == 0);
break;
case 17:
cilk_spawn update_str(heap_data, 4, 12); // no race
read_i(heap_data);
cilk_sync;
assert(__cilksan_error_count() == 0);
break;
case 18:
cilk_spawn update_str(heap_data, 3, 5); // no race
update_str(heap_data, 5, 8);
cilk_sync;
assert(__cilksan_error_count() == 0);
break;
case 19:
read_and_write(&global_data); // read write race, but just 1
read_and_write(heap_data);
cilk_sync;
assert(__cilksan_error_count() == 1);
break;
}
cilk_sync;
free(heap_data);
return 0;
}