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check_ipc.c
1658 lines (1424 loc) · 36.8 KB
/
check_ipc.c
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/*
* Copyright (c) 2010 Red Hat, Inc.
*
* All rights reserved.
*
* Author: Angus Salkeld <asalkeld@redhat.com>
*
* This file is part of libqb.
*
* libqb is free software: you can redistribute it and/or modify
* it under the terms of the GNU Lesser General Public License as published by
* the Free Software Foundation, either version 2.1 of the License, or
* (at your option) any later version.
*
* libqb is distributed in the hope that it will be useful,
* but WITHOUT ANY WARRANTY; without even the implied warranty of
* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
* GNU Lesser General Public License for more details.
*
* You should have received a copy of the GNU Lesser General Public License
* along with libqb. If not, see <http://www.gnu.org/licenses/>.
*/
#include "os_base.h"
#include <sys/wait.h>
#include <signal.h>
#include <check.h>
#include <qb/qbdefs.h>
#include <qb/qblog.h>
#include <qb/qbipcc.h>
#include <qb/qbipcs.h>
#include <qb/qbloop.h>
static char ipc_name[256];
#define DEFAULT_MAX_MSG_SIZE (8192*16)
static int CALCULATED_DGRAM_MAX_MSG_SIZE = 0;
#define DGRAM_MAX_MSG_SIZE \
(CALCULATED_DGRAM_MAX_MSG_SIZE == 0 ? \
CALCULATED_DGRAM_MAX_MSG_SIZE = qb_ipcc_verify_dgram_max_msg_size(DEFAULT_MAX_MSG_SIZE) : \
CALCULATED_DGRAM_MAX_MSG_SIZE)
#define MAX_MSG_SIZE (ipc_type == QB_IPC_SOCKET ? DGRAM_MAX_MSG_SIZE : DEFAULT_MAX_MSG_SIZE)
/* The size the giant msg's data field needs to be to make
* this the largests msg we can successfully send. */
#define GIANT_MSG_DATA_SIZE MAX_MSG_SIZE - sizeof(struct qb_ipc_response_header) - 8
static int enforce_server_buffer=0;
static qb_ipcc_connection_t *conn;
static enum qb_ipc_type ipc_type;
enum my_msg_ids {
IPC_MSG_REQ_TX_RX,
IPC_MSG_RES_TX_RX,
IPC_MSG_REQ_DISPATCH,
IPC_MSG_RES_DISPATCH,
IPC_MSG_REQ_BULK_EVENTS,
IPC_MSG_RES_BULK_EVENTS,
IPC_MSG_REQ_STRESS_EVENT,
IPC_MSG_RES_STRESS_EVENT,
IPC_MSG_REQ_SERVER_FAIL,
IPC_MSG_RES_SERVER_FAIL,
IPC_MSG_REQ_SERVER_DISCONNECT,
IPC_MSG_RES_SERVER_DISCONNECT,
};
/* Test Cases
*
* 1) basic send & recv differnet message sizes
*
* 2) send message to start dispatch (confirm receipt)
*
* 3) flow control
*
* 4) authentication
*
* 5) thread safety
*
* 6) cleanup
*
* 7) service availabilty
*
* 8) multiple services
*/
static qb_loop_t *my_loop;
static qb_ipcs_service_t* s1;
static int32_t turn_on_fc = QB_FALSE;
static int32_t fc_enabled = 89;
static int32_t send_event_on_created = QB_FALSE;
static int32_t disconnect_after_created = QB_FALSE;
static int32_t num_bulk_events = 10;
static int32_t num_stress_events = 30000;
static int32_t reference_count_test = QB_FALSE;
static int32_t multiple_connections = QB_FALSE;
static int32_t
exit_handler(int32_t rsignal, void *data)
{
qb_log(LOG_DEBUG, "caught signal %d", rsignal);
qb_ipcs_destroy(s1);
exit(0);
}
static void
set_ipc_name(const char *prefix)
{
/* We have to give the server name a random postfix because
* some build systems attempt to generate packages for libqb
* in parallel. These unit tests are run during the package
* build process. Two builds executing on the same machine
* can stomp on each other's unit tests if the ipc server
* names aren't unique... This was very confusing to debug */
snprintf(ipc_name, 256, "%s-%d", prefix, (int32_t)random());
}
static int32_t
s1_msg_process_fn(qb_ipcs_connection_t *c,
void *data, size_t size)
{
struct qb_ipc_request_header *req_pt = (struct qb_ipc_request_header *)data;
struct qb_ipc_response_header response = { 0, };
ssize_t res;
if (req_pt->id == IPC_MSG_REQ_TX_RX) {
response.size = sizeof(struct qb_ipc_response_header);
response.id = IPC_MSG_RES_TX_RX;
response.error = 0;
res = qb_ipcs_response_send(c, &response, response.size);
if (res < 0) {
qb_perror(LOG_INFO, "qb_ipcs_response_send");
} else if (res != response.size) {
qb_log(LOG_DEBUG, "qb_ipcs_response_send %zd != %d",
res, response.size);
}
if (turn_on_fc) {
qb_ipcs_request_rate_limit(s1, QB_IPCS_RATE_OFF);
}
} else if (req_pt->id == IPC_MSG_REQ_DISPATCH) {
response.size = sizeof(struct qb_ipc_response_header);
response.id = IPC_MSG_RES_DISPATCH;
response.error = 0;
res = qb_ipcs_event_send(c, &response,
sizeof(response));
if (res < 0) {
qb_perror(LOG_INFO, "qb_ipcs_event_send");
}
} else if (req_pt->id == IPC_MSG_REQ_BULK_EVENTS) {
int32_t m;
int32_t num;
struct qb_ipcs_connection_stats_2 *stats;
uint32_t max_size = MAX_MSG_SIZE;
response.size = sizeof(struct qb_ipc_response_header);
response.error = 0;
stats = qb_ipcs_connection_stats_get_2(c, QB_FALSE);
num = stats->event_q_length;
free(stats);
/* crazy large message */
res = qb_ipcs_event_send(c, &response, max_size*10);
ck_assert_int_eq(res, -EMSGSIZE);
/* send one event before responding */
res = qb_ipcs_event_send(c, &response, sizeof(response));
ck_assert_int_eq(res, sizeof(response));
response.id++;
/* There should be one more item in the event queue now. */
stats = qb_ipcs_connection_stats_get_2(c, QB_FALSE);
ck_assert_int_eq(stats->event_q_length - num, 1);
free(stats);
/* send response */
response.id = IPC_MSG_RES_BULK_EVENTS;
res = qb_ipcs_response_send(c, &response, response.size);
ck_assert_int_eq(res, sizeof(response));
/* send the rest of the events after the response */
for (m = 1; m < num_bulk_events; m++) {
res = qb_ipcs_event_send(c, &response, sizeof(response));
if (res == -EAGAIN || res == -ENOBUFS) {
/* retry */
usleep(1000);
m--;
continue;
}
ck_assert_int_eq(res, sizeof(response));
response.id++;
}
} else if (req_pt->id == IPC_MSG_REQ_STRESS_EVENT) {
struct {
struct qb_ipc_response_header hdr __attribute__ ((aligned(8)));
char data[GIANT_MSG_DATA_SIZE] __attribute__ ((aligned(8)));
uint32_t sent_msgs __attribute__ ((aligned(8)));
} __attribute__ ((aligned(8))) giant_event_send;
int32_t m;
response.size = sizeof(struct qb_ipc_response_header);
response.error = 0;
response.id = IPC_MSG_RES_STRESS_EVENT;
res = qb_ipcs_response_send(c, &response, response.size);
ck_assert_int_eq(res, sizeof(response));
giant_event_send.hdr.error = 0;
giant_event_send.hdr.id = IPC_MSG_RES_STRESS_EVENT;
for (m = 0; m < num_stress_events; m++) {
size_t sent_len = sizeof(struct qb_ipc_response_header);
if (((m+1) % 1000) == 0) {
sent_len = sizeof(giant_event_send);
giant_event_send.sent_msgs = m + 1;
}
giant_event_send.hdr.size = sent_len;
res = qb_ipcs_event_send(c, &giant_event_send, sent_len);
if (res < 0) {
if (res == -EAGAIN || res == -ENOBUFS) {
/* yield to the receive process */
usleep(1000);
m--;
continue;
} else {
qb_perror(LOG_DEBUG, "sending stress events");
ck_assert_int_eq(res, sent_len);
}
} else if (((m+1) % 1000) == 0) {
qb_log(LOG_DEBUG, "SENT: %d stress events sent", m+1);
}
giant_event_send.hdr.id++;
}
} else if (req_pt->id == IPC_MSG_REQ_SERVER_FAIL) {
exit(0);
} else if (req_pt->id == IPC_MSG_REQ_SERVER_DISCONNECT) {
multiple_connections = QB_FALSE;
qb_ipcs_disconnect(c);
}
return 0;
}
static int32_t
my_job_add(enum qb_loop_priority p,
void *data,
qb_loop_job_dispatch_fn fn)
{
return qb_loop_job_add(my_loop, p, data, fn);
}
static int32_t
my_dispatch_add(enum qb_loop_priority p, int32_t fd, int32_t events,
void *data, qb_ipcs_dispatch_fn_t fn)
{
return qb_loop_poll_add(my_loop, p, fd, events, data, fn);
}
static int32_t
my_dispatch_mod(enum qb_loop_priority p, int32_t fd, int32_t events,
void *data, qb_ipcs_dispatch_fn_t fn)
{
return qb_loop_poll_mod(my_loop, p, fd, events, data, fn);
}
static int32_t
my_dispatch_del(int32_t fd)
{
return qb_loop_poll_del(my_loop, fd);
}
static int32_t
s1_connection_closed(qb_ipcs_connection_t *c)
{
if (multiple_connections) {
return 0;
}
qb_enter();
qb_leave();
return 0;
}
static void
outq_flush (void *data)
{
static int i = 0;
struct cs_ipcs_conn_context *cnx;
cnx = qb_ipcs_context_get(data);
qb_log(LOG_DEBUG,"iter %u\n", i);
i++;
if (i == 2) {
qb_ipcs_destroy(s1);
s1 = NULL;
}
/* is the reference counting is not working, this should fail
* for i > 1.
*/
qb_ipcs_event_send(data, "test", 4);
assert(memcmp(cnx, "test", 4) == 0);
if (i < 5) {
qb_loop_job_add(my_loop, QB_LOOP_HIGH, data, outq_flush);
} else {
/* this single unref should clean everything up.
*/
qb_ipcs_connection_unref(data);
qb_log(LOG_INFO, "end of test, stopping loop");
qb_loop_stop(my_loop);
}
}
static void
s1_connection_destroyed(qb_ipcs_connection_t *c)
{
if (multiple_connections) {
return;
}
qb_enter();
if (reference_count_test) {
struct cs_ipcs_conn_context *cnx;
cnx = qb_ipcs_context_get(c);
free(cnx);
} else {
qb_loop_stop(my_loop);
}
qb_leave();
}
static void
s1_connection_created(qb_ipcs_connection_t *c)
{
uint32_t max = MAX_MSG_SIZE;
if (multiple_connections) {
return;
}
if (send_event_on_created) {
struct qb_ipc_response_header response;
int32_t res;
response.size = sizeof(struct qb_ipc_response_header);
response.id = IPC_MSG_RES_DISPATCH;
response.error = 0;
res = qb_ipcs_event_send(c, &response,
sizeof(response));
ck_assert_int_eq(res, response.size);
}
if (reference_count_test) {
struct cs_ipcs_conn_context *context;
qb_ipcs_connection_ref(c);
qb_loop_job_add(my_loop, QB_LOOP_HIGH, c, outq_flush);
context = calloc(1, 20);
memcpy(context, "test", 4);
qb_ipcs_context_set(c, context);
}
ck_assert_int_eq(max, qb_ipcs_connection_get_buffer_size(c));
}
static void
run_ipc_server(void)
{
int32_t res;
qb_loop_signal_handle handle;
struct qb_ipcs_service_handlers sh = {
.connection_accept = NULL,
.connection_created = s1_connection_created,
.msg_process = s1_msg_process_fn,
.connection_destroyed = s1_connection_destroyed,
.connection_closed = s1_connection_closed,
};
struct qb_ipcs_poll_handlers ph = {
.job_add = my_job_add,
.dispatch_add = my_dispatch_add,
.dispatch_mod = my_dispatch_mod,
.dispatch_del = my_dispatch_del,
};
uint32_t max_size = MAX_MSG_SIZE;
qb_loop_signal_add(my_loop, QB_LOOP_HIGH, SIGSTOP,
NULL, exit_handler, &handle);
qb_loop_signal_add(my_loop, QB_LOOP_HIGH, SIGTERM,
NULL, exit_handler, &handle);
my_loop = qb_loop_create();
s1 = qb_ipcs_create(ipc_name, 4, ipc_type, &sh);
fail_if(s1 == 0);
if (enforce_server_buffer) {
qb_ipcs_enforce_buffer_size(s1, max_size);
}
qb_ipcs_poll_handlers_set(s1, &ph);
res = qb_ipcs_run(s1);
ck_assert_int_eq(res, 0);
qb_loop_run(my_loop);
qb_log(LOG_DEBUG, "loop finished - done ...");
}
static int32_t
run_function_in_new_process(void (*run_ipc_server_fn)(void))
{
pid_t pid = fork ();
if (pid == -1) {
fprintf (stderr, "Can't fork\n");
return -1;
}
if (pid == 0) {
run_ipc_server_fn();
exit(0);
}
return pid;
}
static void
request_server_exit(void)
{
struct qb_ipc_request_header req_header;
struct qb_ipc_response_header res_header;
struct iovec iov[1];
int32_t res;
/*
* tell the server to exit
*/
req_header.id = IPC_MSG_REQ_SERVER_FAIL;
req_header.size = sizeof(struct qb_ipc_request_header);
iov[0].iov_len = req_header.size;
iov[0].iov_base = &req_header;
ck_assert_int_eq(QB_TRUE, qb_ipcc_is_connected(conn));
res = qb_ipcc_sendv_recv(conn, iov, 1,
&res_header,
sizeof(struct qb_ipc_response_header), -1);
/*
* confirm we get -ENOTCONN or ECONNRESET
*/
if (res != -ECONNRESET && res != -ENOTCONN) {
qb_log(LOG_ERR, "id:%d size:%d", res_header.id, res_header.size);
ck_assert_int_eq(res, -ENOTCONN);
}
}
static void
kill_server(pid_t pid)
{
kill(pid, SIGTERM);
waitpid(pid, NULL, 0);
}
static int32_t
verify_graceful_stop(pid_t pid)
{
int wait_rc = 0;
int status = 0;
int rc = 0;
int tries;
/* We need the server to be able to exit by itself */
for (tries = 10; tries >= 0; tries--) {
sleep(1);
wait_rc = waitpid(pid, &status, WNOHANG);
if (wait_rc > 0) {
break;
}
}
ck_assert_int_eq(wait_rc, pid);
rc = WIFEXITED(status);
if (rc) {
rc = WEXITSTATUS(status);
ck_assert_int_eq(rc, 0);
} else {
fail_if(rc == 0);
}
return 0;
}
struct my_req {
struct qb_ipc_request_header hdr;
char message[1024 * 1024];
};
static struct my_req request;
static int32_t
send_and_check(int32_t req_id, uint32_t size,
int32_t ms_timeout, int32_t expect_perfection)
{
struct qb_ipc_response_header res_header;
int32_t res;
int32_t try_times = 0;
uint32_t max_size = MAX_MSG_SIZE;
request.hdr.id = req_id;
request.hdr.size = sizeof(struct qb_ipc_request_header) + size;
/* check that we can't send a message that is too big
* and we get the right return code.
*/
res = qb_ipcc_send(conn, &request, max_size*2);
ck_assert_int_eq(res, -EMSGSIZE);
repeat_send:
res = qb_ipcc_send(conn, &request, request.hdr.size);
try_times++;
if (res < 0) {
if (res == -EAGAIN && try_times < 10) {
goto repeat_send;
} else {
if (res == -EAGAIN && try_times >= 10) {
fc_enabled = QB_TRUE;
}
errno = -res;
qb_perror(LOG_INFO, "qb_ipcc_send");
return res;
}
}
if (req_id == IPC_MSG_REQ_DISPATCH) {
res = qb_ipcc_event_recv(conn, &res_header,
sizeof(struct qb_ipc_response_header),
ms_timeout);
} else {
res = qb_ipcc_recv(conn, &res_header,
sizeof(struct qb_ipc_response_header),
ms_timeout);
}
if (res == -EINTR) {
return -1;
}
if (res == -EAGAIN || res == -ETIMEDOUT) {
fc_enabled = QB_TRUE;
qb_perror(LOG_DEBUG, "qb_ipcc_recv");
return res;
}
if (expect_perfection) {
ck_assert_int_eq(res, sizeof(struct qb_ipc_response_header));
ck_assert_int_eq(res_header.id, req_id + 1);
ck_assert_int_eq(res_header.size, sizeof(struct qb_ipc_response_header));
}
return res;
}
static void
test_ipc_txrx_timeout(void)
{
struct qb_ipc_request_header req_header;
struct qb_ipc_response_header res_header;
struct iovec iov[1];
int32_t res;
int32_t c = 0;
int32_t j = 0;
pid_t pid;
uint32_t max_size = MAX_MSG_SIZE;
pid = run_function_in_new_process(run_ipc_server);
fail_if(pid == -1);
sleep(1);
do {
conn = qb_ipcc_connect(ipc_name, max_size);
if (conn == NULL) {
j = waitpid(pid, NULL, WNOHANG);
ck_assert_int_eq(j, 0);
sleep(1);
c++;
}
} while (conn == NULL && c < 5);
fail_if(conn == NULL);
/* The dispatch response will only come over
* the event channel, we want to verify the receive times
* out when an event is returned with no response */
req_header.id = IPC_MSG_REQ_DISPATCH;
req_header.size = sizeof(struct qb_ipc_request_header);
iov[0].iov_len = req_header.size;
iov[0].iov_base = &req_header;
res = qb_ipcc_sendv_recv(conn, iov, 1,
&res_header,
sizeof(struct qb_ipc_response_header), 5000);
ck_assert_int_eq(res, -ETIMEDOUT);
request_server_exit();
verify_graceful_stop(pid);
/*
* wait a bit for the server to die.
*/
sleep(1);
/*
* this needs to free up the shared mem
*/
qb_ipcc_disconnect(conn);
}
static int32_t recv_timeout = -1;
static void
test_ipc_txrx(void)
{
int32_t j;
int32_t c = 0;
size_t size;
pid_t pid;
uint32_t max_size = MAX_MSG_SIZE;
pid = run_function_in_new_process(run_ipc_server);
fail_if(pid == -1);
sleep(1);
do {
conn = qb_ipcc_connect(ipc_name, max_size);
if (conn == NULL) {
j = waitpid(pid, NULL, WNOHANG);
ck_assert_int_eq(j, 0);
sleep(1);
c++;
}
} while (conn == NULL && c < 5);
fail_if(conn == NULL);
size = QB_MIN(sizeof(struct qb_ipc_request_header), 64);
for (j = 1; j < 19; j++) {
size *= 2;
if (size >= max_size)
break;
if (send_and_check(IPC_MSG_REQ_TX_RX, size,
recv_timeout, QB_TRUE) < 0) {
break;
}
}
if (turn_on_fc) {
/* can't signal server to shutdown if flow control is on */
ck_assert_int_eq(fc_enabled, QB_TRUE);
qb_ipcc_disconnect(conn);
/* TODO - figure out why this sleep is necessary */
sleep(1);
kill_server(pid);
} else {
request_server_exit();
qb_ipcc_disconnect(conn);
verify_graceful_stop(pid);
}
}
static void
test_ipc_exit(void)
{
struct qb_ipc_request_header req_header;
struct qb_ipc_response_header res_header;
struct iovec iov[1];
int32_t res;
int32_t c = 0;
int32_t j = 0;
pid_t pid;
uint32_t max_size = MAX_MSG_SIZE;
pid = run_function_in_new_process(run_ipc_server);
fail_if(pid == -1);
sleep(1);
do {
conn = qb_ipcc_connect(ipc_name, max_size);
if (conn == NULL) {
j = waitpid(pid, NULL, WNOHANG);
ck_assert_int_eq(j, 0);
sleep(1);
c++;
}
} while (conn == NULL && c < 5);
fail_if(conn == NULL);
req_header.id = IPC_MSG_REQ_TX_RX;
req_header.size = sizeof(struct qb_ipc_request_header);
iov[0].iov_len = req_header.size;
iov[0].iov_base = &req_header;
res = qb_ipcc_sendv_recv(conn, iov, 1,
&res_header,
sizeof(struct qb_ipc_response_header), -1);
ck_assert_int_eq(res, sizeof(struct qb_ipc_response_header));
request_server_exit();
verify_graceful_stop(pid);
/*
* wait a bit for the server to die.
*/
sleep(1);
/*
* this needs to free up the shared mem
*/
qb_ipcc_disconnect(conn);
}
START_TEST(test_ipc_exit_us)
{
qb_enter();
ipc_type = QB_IPC_SOCKET;
set_ipc_name(__func__);
recv_timeout = 5000;
test_ipc_exit();
qb_leave();
}
END_TEST
START_TEST(test_ipc_exit_shm)
{
qb_enter();
ipc_type = QB_IPC_SHM;
set_ipc_name(__func__);
recv_timeout = 1000;
test_ipc_exit();
qb_leave();
}
END_TEST
START_TEST(test_ipc_txrx_shm_timeout)
{
qb_enter();
ipc_type = QB_IPC_SHM;
set_ipc_name(__func__);
test_ipc_txrx_timeout();
qb_leave();
}
END_TEST
START_TEST(test_ipc_txrx_us_timeout)
{
qb_enter();
ipc_type = QB_IPC_SOCKET;
set_ipc_name(__func__);
test_ipc_txrx_timeout();
qb_leave();
}
END_TEST
START_TEST(test_ipc_txrx_shm_tmo)
{
qb_enter();
turn_on_fc = QB_FALSE;
ipc_type = QB_IPC_SHM;
set_ipc_name(__func__);
recv_timeout = 1000;
test_ipc_txrx();
qb_leave();
}
END_TEST
START_TEST(test_ipc_txrx_shm_block)
{
qb_enter();
turn_on_fc = QB_FALSE;
ipc_type = QB_IPC_SHM;
set_ipc_name(__func__);
recv_timeout = -1;
test_ipc_txrx();
qb_leave();
}
END_TEST
START_TEST(test_ipc_fc_shm)
{
qb_enter();
turn_on_fc = QB_TRUE;
ipc_type = QB_IPC_SHM;
recv_timeout = 500;
set_ipc_name(__func__);
test_ipc_txrx();
qb_leave();
}
END_TEST
START_TEST(test_ipc_txrx_us_block)
{
qb_enter();
turn_on_fc = QB_FALSE;
ipc_type = QB_IPC_SOCKET;
set_ipc_name(__func__);
recv_timeout = -1;
test_ipc_txrx();
qb_leave();
}
END_TEST
START_TEST(test_ipc_txrx_us_tmo)
{
qb_enter();
turn_on_fc = QB_FALSE;
ipc_type = QB_IPC_SOCKET;
set_ipc_name(__func__);
recv_timeout = 1000;
test_ipc_txrx();
qb_leave();
}
END_TEST
START_TEST(test_ipc_fc_us)
{
qb_enter();
turn_on_fc = QB_TRUE;
ipc_type = QB_IPC_SOCKET;
recv_timeout = 500;
set_ipc_name(__func__);
test_ipc_txrx();
qb_leave();
}
END_TEST
struct my_res {
struct qb_ipc_response_header hdr;
char message[1024 * 1024];
};
static void
test_ipc_dispatch(void)
{
int32_t j;
int32_t c = 0;
pid_t pid;
int32_t size;
uint32_t max_size = MAX_MSG_SIZE;
pid = run_function_in_new_process(run_ipc_server);
fail_if(pid == -1);
sleep(1);
do {
conn = qb_ipcc_connect(ipc_name, max_size);
if (conn == NULL) {
j = waitpid(pid, NULL, WNOHANG);
ck_assert_int_eq(j, 0);
sleep(1);
c++;
}
} while (conn == NULL && c < 5);
fail_if(conn == NULL);
size = QB_MIN(sizeof(struct qb_ipc_request_header), 64);
for (j = 1; j < 19; j++) {
size *= 2;
if (size >= max_size)
break;
if (send_and_check(IPC_MSG_REQ_DISPATCH, size,
recv_timeout, QB_TRUE) < 0) {
break;
}
}
request_server_exit();
qb_ipcc_disconnect(conn);
verify_graceful_stop(pid);
}
START_TEST(test_ipc_disp_us)
{
qb_enter();
ipc_type = QB_IPC_SOCKET;
set_ipc_name(__func__);
test_ipc_dispatch();
qb_leave();
}
END_TEST
static int32_t events_received;
static int32_t
count_stress_events(int32_t fd, int32_t revents, void *data)
{
struct {
struct qb_ipc_response_header hdr __attribute__ ((aligned(8)));
char data[GIANT_MSG_DATA_SIZE] __attribute__ ((aligned(8)));
uint32_t sent_msgs __attribute__ ((aligned(8)));
} __attribute__ ((aligned(8))) giant_event_recv;
qb_loop_t *cl = (qb_loop_t*)data;
int32_t res;
res = qb_ipcc_event_recv(conn, &giant_event_recv,
sizeof(giant_event_recv),
-1);
if (res > 0) {
events_received++;
if ((events_received % 1000) == 0) {
qb_log(LOG_DEBUG, "RECV: %d stress events processed", events_received);
if (res != sizeof(giant_event_recv)) {
qb_log(LOG_DEBUG, "Unexpected recv size, expected %d got %d",
res, sizeof(giant_event_recv));
ck_assert_int_eq(res, sizeof(giant_event_recv));
} else if (giant_event_recv.sent_msgs != events_received) {
qb_log(LOG_DEBUG, "Server event mismatch. Server thinks we got %d msgs, but we only received %d",
giant_event_recv.sent_msgs, events_received);
/* This indicates that data corruption is occurring. Since the events
* received is placed at the end of the giant msg, it is possible
* that buffers were not allocated correctly resulting in us
* reading/writing to uninitialized memeory at some point. */
ck_assert_int_eq(giant_event_recv.sent_msgs, events_received);
}
}
} else if (res != -EAGAIN) {
qb_perror(LOG_DEBUG, "count_stress_events");
qb_loop_stop(cl);
return -1;
}
if (events_received >= num_stress_events) {
qb_loop_stop(cl);
return -1;
}
return 0;
}
static int32_t
count_bulk_events(int32_t fd, int32_t revents, void *data)
{
qb_loop_t *cl = (qb_loop_t*)data;
struct qb_ipc_response_header res_header;
int32_t res;
res = qb_ipcc_event_recv(conn, &res_header,
sizeof(struct qb_ipc_response_header),
-1);
if (res > 0) {
events_received++;
}
if (events_received >= num_bulk_events) {
qb_loop_stop(cl);
return -1;
}
return 0;
}
static void
test_ipc_stress_connections(void)
{
int32_t c = 0;
int32_t j = 0;
uint32_t max_size = MAX_MSG_SIZE;
int32_t connections = 0;
pid_t pid;
multiple_connections = QB_TRUE;
qb_log_filter_ctl(QB_LOG_STDERR, QB_LOG_FILTER_CLEAR_ALL,
QB_LOG_FILTER_FILE, "*", LOG_TRACE);
qb_log_filter_ctl(QB_LOG_STDERR, QB_LOG_FILTER_ADD,
QB_LOG_FILTER_FILE, "*", LOG_INFO);
qb_log_ctl(QB_LOG_STDERR, QB_LOG_CONF_ENABLED, QB_TRUE);
pid = run_function_in_new_process(run_ipc_server);
fail_if(pid == -1);
sleep(1);
for (connections = 1; connections < 70000; connections++) {
if (conn) {
qb_ipcc_disconnect(conn);
conn = NULL;
}
do {
conn = qb_ipcc_connect(ipc_name, max_size);
if (conn == NULL) {
j = waitpid(pid, NULL, WNOHANG);
ck_assert_int_eq(j, 0);
sleep(1);
c++;
}
} while (conn == NULL && c < 5);
fail_if(conn == NULL);
if (((connections+1) % 1000) == 0) {
qb_log(LOG_INFO, "%d ipc connections made", connections+1);
}
}