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libzmq/tests/test_fork.cpp
Luca Boccassi da31917f4f Relicense from LGPL3 + exceptions to Mozilla Public License version 2.0
Relicense permission collected from all relevant authors as tallied at:
https://github.com/rlenferink/libzmq-relicense/blob/master/checklist.md
The relicense grants are collected under RELICENSE/ and will be moved
to the above repository in a later commit.

Fixes https://github.com/zeromq/libzmq/issues/2376
2023-06-05 20:31:47 +01:00

77 lines
1.9 KiB
C++

/* SPDX-License-Identifier: MPL-2.0 */
#include "testutil.hpp"
#include "testutil_unity.hpp"
#include <assert.h>
#include <stdlib.h>
#include <unistd.h>
#include <sys/wait.h>
SETUP_TEARDOWN_TESTCONTEXT
char connect_address[MAX_SOCKET_STRING];
#define NUM_MESSAGES 5
void test_fork ()
{
#if !defined(ZMQ_HAVE_WINDOWS)
// Create and bind pull socket to receive messages
void *pull = test_context_socket (ZMQ_PULL);
bind_loopback_ipv4 (pull, connect_address, sizeof connect_address);
int pid = fork ();
if (pid == 0) {
// use regular assertions in the child process
// Child process
// Immediately close parent sockets and context
zmq_close (pull);
zmq_ctx_term (get_test_context ());
// Create new context, socket, connect and send some messages
void *child_ctx = zmq_ctx_new ();
assert (child_ctx);
void *push = zmq_socket (child_ctx, ZMQ_PUSH);
assert (push);
int rc = zmq_connect (push, connect_address);
assert (rc == 0);
int count;
for (count = 0; count < NUM_MESSAGES; count++)
zmq_send (push, "Hello", 5, 0);
zmq_close (push);
zmq_ctx_destroy (child_ctx);
exit (0);
} else {
// Parent process
int count;
for (count = 0; count < NUM_MESSAGES; count++) {
recv_string_expect_success (pull, "Hello", 0);
}
int child_status;
while (true) {
int rc = waitpid (pid, &child_status, 0);
if (rc == -1 && errno == EINTR)
continue;
TEST_ASSERT_GREATER_THAN (0, rc);
// Verify the status code of the child was zero
TEST_ASSERT_EQUAL (0, WEXITSTATUS (child_status));
break;
}
test_context_socket_close (pull);
}
#endif
}
int main (void)
{
setup_test_environment ();
UNITY_BEGIN ();
RUN_TEST (test_fork);
return UNITY_END ();
}