test_iov.cpp 5.24 KB
Newer Older
1
/*
2
    Copyright (c) 2007-2016 Contributors as noted in the AUTHORS file
3

4
    This file is part of libzmq, the ZeroMQ core engine in C++.
5

6 7 8
    libzmq is free software; you can redistribute it and/or modify it under
    the terms of the GNU Lesser General Public License (LGPL) as published
    by the Free Software Foundation; either version 3 of the License, or
9 10
    (at your option) any later version.

11 12 13 14 15 16 17 18 19 20 21 22 23 24
    As a special exception, the Contributors give you permission to link
    this library with independent modules to produce an executable,
    regardless of the license terms of these independent modules, and to
    copy and distribute the resulting executable under terms of your choice,
    provided that you also meet, for each linked independent module, the
    terms and conditions of the license of that module. An independent
    module is a module which is not derived from or based on this library.
    If you modify this library, you must extend this exception to your
    version of the library.

    libzmq 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.
25 26 27 28 29

    You should have received a copy of the GNU Lesser General Public License
    along with this program.  If not, see <http://www.gnu.org/licenses/>.
*/

30
#include "testutil.hpp"
31 32
#include "testutil_unity.hpp"

33 34
#include <stdlib.h>
#include <string.h>
35

36
SETUP_TEARDOWN_TESTCONTEXT
37 38 39 40 41

// XSI vector I/O
#if defined ZMQ_HAVE_UIO
#include <sys/uio.h>
#else
42 43
struct iovec
{
44 45 46 47 48
    void *iov_base;
    size_t iov_len;
};
#endif

49
static void do_check (void *sb_, void *sc_, size_t msg_size_)
50
{
51 52 53
    TEST_ASSERT_NOT_NULL (sb_);
    TEST_ASSERT_NOT_NULL (sc_);
    TEST_ASSERT_GREATER_THAN (0, msg_size_);
54 55 56 57 58 59 60

    const char msg_val = '1';
    const int num_messages = 10;
    size_t send_count, recv_count;

    send_count = recv_count = num_messages;

61 62
    char *ref_msg = static_cast<char *> (malloc (msg_size_));
    TEST_ASSERT_NOT_NULL (ref_msg);
63
    memset (ref_msg, msg_val, msg_size_);
64 65 66

    // zmq_sendiov(3) as a single multi-part send
    struct iovec send_iov[num_messages];
67
    char *buf = static_cast<char *> (malloc (msg_size_ * num_messages));
68

69
    for (int i = 0; i < num_messages; i++) {
70 71 72
        send_iov[i].iov_base = &buf[i * msg_size_];
        send_iov[i].iov_len = msg_size_;
        memcpy (send_iov[i].iov_base, ref_msg, msg_size_);
73

74 75
        // TODO: this assertion only checks if memcpy behaves as expected... remove this or assert something else?
        TEST_ASSERT_EQUAL_HEX8_ARRAY (ref_msg, send_iov[i].iov_base, msg_size_);
76 77
    }

78
    // Test errors - zmq_recviov - null socket
79 80
    TEST_ASSERT_FAILURE_ERRNO (
      ENOTSOCK, zmq_sendiov (NULL, send_iov, send_count, ZMQ_SNDMORE));
81
    // Test errors - zmq_recviov - invalid send count
82
    TEST_ASSERT_FAILURE_ERRNO (EINVAL, zmq_sendiov (sc_, send_iov, 0, 0));
83
    // Test errors - zmq_recviov - null iovec
84
    TEST_ASSERT_FAILURE_ERRNO (EINVAL, zmq_sendiov (sc_, NULL, send_count, 0));
85 86

    // Test success
87

88 89 90 91
    // The zmq_sendiov(3) API method does not follow the same semantics as
    // zmq_recviov(3); the latter returns the count of messages sent, rightly
    // so, whilst the former sends the number of bytes successfully sent from
    // the last message, which does not hold much sense from a batch send
92 93 94 95
    // perspective; hence the assert checks if the result is same as msg_size.
    TEST_ASSERT_EQUAL_INT (
      (int) msg_size_, TEST_ASSERT_SUCCESS_ERRNO (
                         zmq_sendiov (sc_, send_iov, send_count, ZMQ_SNDMORE)));
96 97 98 99 100

    // zmq_recviov(3) single-shot
    struct iovec recv_iov[num_messages];

    // Test errors - zmq_recviov - null socket
101 102
    TEST_ASSERT_FAILURE_ERRNO (ENOTSOCK,
                               zmq_recviov (NULL, recv_iov, &recv_count, 0));
103
    // Test error - zmq_recviov - invalid receive count
104
    TEST_ASSERT_FAILURE_ERRNO (EINVAL, zmq_recviov (sb_, recv_iov, NULL, 0));
105
    size_t invalid_recv_count = 0;
106 107
    TEST_ASSERT_FAILURE_ERRNO (
      EINVAL, zmq_recviov (sb_, recv_iov, &invalid_recv_count, 0));
108
    // Test error - zmq_recviov - null iovec
109
    TEST_ASSERT_FAILURE_ERRNO (EINVAL, zmq_recviov (sb_, NULL, &recv_count, 0));
110 111

    // Test success
112 113 114
    TEST_ASSERT_EQUAL_INT (
      num_messages,
      TEST_ASSERT_SUCCESS_ERRNO (zmq_recviov (sb_, recv_iov, &recv_count, 0)));
115

116
    for (int i = 0; i < num_messages; i++) {
117 118
        TEST_ASSERT_NOT_NULL (recv_iov[i].iov_base);
        TEST_ASSERT_EQUAL_STRING_LEN (ref_msg, recv_iov[i].iov_base, msg_size_);
119
        free (recv_iov[i].iov_base);
120 121
    }

122
    TEST_ASSERT_EQUAL_INT (send_count, recv_count);
123 124
    free (ref_msg);
    free (buf);
125 126
}

127
void test_iov ()
128
{
129 130
    void *sb = test_context_socket (ZMQ_PULL);
    TEST_ASSERT_SUCCESS_ERRNO (zmq_bind (sb, "inproc://a"));
131

132
    msleep (SETTLE_TIME);
133

134 135
    void *sc = test_context_socket (ZMQ_PUSH);
    TEST_ASSERT_SUCCESS_ERRNO (zmq_connect (sc, "inproc://a"));
136

137 138
    // message bigger than VSM max
    do_check (sb, sc, 100);
139

140 141
    // message smaller than VSM max
    do_check (sb, sc, 10);
142

143 144 145
    test_context_socket_close (sc);
    test_context_socket_close (sb);
}
146

147 148 149
int main ()
{
    setup_test_environment ();
150

151 152 153
    UNITY_BEGIN ();
    RUN_TEST (test_iov);
    return UNITY_END ();
154
}