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/* Copyright 2000-2004 The Apache Software Foundation
*
* Licensed under the Apache License, Version 2.0 (the "License");
* you may not use this file except in compliance with the License.
* You may obtain a copy of the License at
*
* http://www.apache.org/licenses/LICENSE-2.0
*
* Unless required by applicable law or agreed to in writing, software
* distributed under the License is distributed on an "AS IS" BASIS,
* WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
* See the License for the specific language governing permissions and
* limitations under the License.
*/
#include "test_apr.h"
#include "apr_shm.h"
#include "apr_errno.h"
#include "apr_general.h"
#include "apr_lib.h"
#include "apr_strings.h"
#include "apr_thread_proc.h"
#include "apr_time.h"
#include "testshm.h"
#if APR_HAS_SHARED_MEMORY
static int msgwait(int sleep_sec, int first_box, int last_box)
{
int i;
int recvd = 0;
apr_time_t start = apr_time_now();
apr_interval_time_t sleep_duration = apr_time_from_sec(sleep_sec);
while (apr_time_now() - start < sleep_duration) {
for (i = first_box; i < last_box; i++) {
if (boxes[i].msgavail && !strcmp(boxes[i].msg, MSG)) {
recvd++;
boxes[i].msgavail = 0; /* reset back to 0 */
/* reset the msg field. 1024 is a magic number and it should
* be a macro, but I am being lazy.
*/
memset(boxes[i].msg, 0, 1024);
}
}
apr_sleep(apr_time_make(0, 10000)); /* 10ms */
}
return recvd;
}
static void msgput(int boxnum, char *msg)
{
apr_cpystrn(boxes[boxnum].msg, msg, strlen(msg) + 1);
boxes[boxnum].msgavail = 1;
}
static void test_anon_create(CuTest *tc)
{
apr_status_t rv;
apr_shm_t *shm = NULL;
rv = apr_shm_create(&shm, SHARED_SIZE, NULL, p);
apr_assert_success(tc, "Error allocating shared memory block", rv);
CuAssertPtrNotNull(tc, shm);
rv = apr_shm_destroy(shm);
apr_assert_success(tc, "Error destroying shared memory block", rv);
}
static void test_check_size(CuTest *tc)
{
apr_status_t rv;
apr_shm_t *shm = NULL;
apr_size_t retsize;
rv = apr_shm_create(&shm, SHARED_SIZE, NULL, p);
apr_assert_success(tc, "Error allocating shared memory block", rv);
CuAssertPtrNotNull(tc, shm);
retsize = apr_shm_size_get(shm);
CuAssertIntEquals(tc, SHARED_SIZE, retsize);
rv = apr_shm_destroy(shm);
apr_assert_success(tc, "Error destroying shared memory block", rv);
}
static void test_shm_allocate(CuTest *tc)
{
apr_status_t rv;
apr_shm_t *shm = NULL;
apr_size_t retsize;
rv = apr_shm_create(&shm, SHARED_SIZE, NULL, p);
apr_assert_success(tc, "Error allocating shared memory block", rv);
CuAssertPtrNotNull(tc, shm);
boxes = apr_shm_baseaddr_get(shm);
CuAssertPtrNotNull(tc, boxes);
rv = apr_shm_destroy(shm);
apr_assert_success(tc, "Error destroying shared memory block", rv);
}
static void test_anon(CuTest *tc)
{
apr_proc_t proc;
apr_status_t rv;
apr_shm_t *shm;
apr_size_t retsize;
pid_t pid;
int cnt, i, exit_int;
int recvd;
rv = apr_shm_create(&shm, SHARED_SIZE, NULL, p);
apr_assert_success(tc, "Error allocating shared memory block", rv);
CuAssertPtrNotNull(tc, shm);
retsize = apr_shm_size_get(shm);
CuAssertIntEquals(tc, SHARED_SIZE, retsize);
boxes = apr_shm_baseaddr_get(shm);
CuAssertPtrNotNull(tc, boxes);
rv = apr_proc_fork(&proc, p);
if (rv == APR_INCHILD) { /* child */
int num = msgwait(5, 0, N_BOXES);
/* exit with the number of messages received so that the parent
* can check that all messages were received.
*/
exit(num);
}
else if (rv == APR_INPARENT) { /* parent */
i = N_BOXES;
cnt = 0;
while (cnt++ < N_MESSAGES) {
if ((i-=3) < 0) {
i += N_BOXES; /* start over at the top */
}
msgput(i, MSG);
apr_sleep(apr_time_make(0, 10000));
}
}
else {
CuFail(tc, "apr_proc_fork failed");
}
/* wait for the child */
rv = apr_proc_wait(&proc, &recvd, NULL, APR_WAIT);
CuAssertIntEquals(tc, N_MESSAGES, recvd);
rv = apr_shm_destroy(shm);
apr_assert_success(tc, "Error destroying shared memory block", rv);
}
static void test_named(CuTest *tc)
{
apr_status_t rv;
apr_shm_t *shm = NULL;
apr_size_t retsize;
apr_proc_t pidproducer, pidconsumer;
apr_procattr_t *attr1 = NULL, *attr2 = NULL;
int sent, received;
apr_exit_why_e why;
const char *args[4];
rv = apr_shm_create(&shm, SHARED_SIZE, SHARED_FILENAME, p);
apr_assert_success(tc, "Error allocating shared memory block", rv);
CuAssertPtrNotNull(tc, shm);
retsize = apr_shm_size_get(shm);
CuAssertIntEquals(tc, SHARED_SIZE, retsize);
boxes = apr_shm_baseaddr_get(shm);
CuAssertPtrNotNull(tc, boxes);
rv = apr_procattr_create(&attr1, p);
CuAssertPtrNotNull(tc, attr1);
apr_assert_success(tc, "Couldn't create attr1", rv);
args[0] = apr_pstrdup(p, "testshmproducer");
args[1] = NULL;
rv = apr_proc_create(&pidproducer, "./testshmproducer", args, NULL,
attr1, p);
apr_assert_success(tc, "Couldn't launch producer", rv);
rv = apr_procattr_create(&attr2, p);
CuAssertPtrNotNull(tc, attr2);
apr_assert_success(tc, "Couldn't create attr2", rv);
args[0] = apr_pstrdup(p, "testshmconsumer");
rv = apr_proc_create(&pidconsumer, "./testshmconsumer", args, NULL,
attr2, p);
apr_assert_success(tc, "Couldn't launch consumer", rv);
rv = apr_proc_wait(&pidconsumer, &received, &why, APR_WAIT);
CuAssertIntEquals(tc, APR_CHILD_DONE, rv);
CuAssertIntEquals(tc, APR_PROC_EXIT, why);
rv = apr_proc_wait(&pidproducer, &sent, &why, APR_WAIT);
CuAssertIntEquals(tc, APR_CHILD_DONE, rv);
CuAssertIntEquals(tc, APR_PROC_EXIT, why);
/* Cleanup before testing that producer and consumer worked correctly.
* This way, if they didn't succeed, we can just run this test again
* without having to cleanup manually.
*/
apr_assert_success(tc, "Error destroying shared memory",
apr_shm_destroy(shm));
CuAssertIntEquals(tc, sent, received);
}
#endif
CuSuite *testshm(void)
{
CuSuite *suite = CuSuiteNew("Shared Memory");
#if APR_HAS_SHARED_MEMORY
SUITE_ADD_TEST(suite, test_anon_create);
SUITE_ADD_TEST(suite, test_check_size);
SUITE_ADD_TEST(suite, test_shm_allocate);
SUITE_ADD_TEST(suite, test_anon);
SUITE_ADD_TEST(suite, test_named);
#endif
return suite;
}
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