111 lines
4.1 KiB
C++
111 lines
4.1 KiB
C++
/*
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* Copyright (c) 2013-2019 Huawei Technologies Co., Ltd. All rights reserved.
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* Copyright (c) 2020-2021 Huawei Device Co., Ltd. All rights reserved.
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*
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* Redistribution and use in source and binary forms, with or without modification,
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* are permitted provided that the following conditions are met:
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*
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* 1. Redistributions of source code must retain the above copyright notice, this list of
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* conditions and the following disclaimer.
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*
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* 2. Redistributions in binary form must reproduce the above copyright notice, this list
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* of conditions and the following disclaimer in the documentation and/or other materials
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* provided with the distribution.
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*
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* 3. Neither the name of the copyright holder nor the names of its contributors may be used
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* to endorse or promote products derived from this software without specific prior written
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* permission.
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*
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* THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
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* "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO,
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* THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR
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* PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT HOLDER OR
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* CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL,
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* EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO,
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* PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS;
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* OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY,
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* WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR
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* OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF
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* ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
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*/
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#include "it_test_signal.h"
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#include "signal.h"
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#include "fcntl.h"
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#include "sys/shm.h"
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static int TestPipeMultiProcess()
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{
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int pipefd[2]; // 2, array subscript
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pid_t pid;
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int retValue = -1;
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retValue = pipe(pipefd);
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ICUNIT_ASSERT_EQUAL(retValue, 0, retValue);
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int *readFd = &pipefd[0];
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int *writeFd = &pipefd[1];
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char readbuffer[100] = {0};
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int status, ret;
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int totalNum = 3;
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int *sharedflag = NULL;
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int shmid;
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int flag = fcntl(*readFd, F_GETFL);
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fcntl(*readFd, F_SETFL, flag | O_NONBLOCK);
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shmid = shmget((key_t)IPC_PRIVATE, sizeof(int), 0666 | IPC_CREAT); // 0666 the authority of the shm
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ICUNIT_ASSERT_NOT_EQUAL(shmid, -1, shmid);
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sharedflag = (int *)shmat(shmid, NULL, 0);
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*sharedflag = 0;
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pid = fork();
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if (pid == -1) {
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printf("Fork Error!\n");
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return -1;
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} else if (pid == 0) {
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sharedflag = (int *)shmat(shmid, NULL, 0);
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close(pipefd[0]);
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for (int i = 0; i < totalNum; i++) {
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errno = 0;
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char sentence1[15] = "Hello World";
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char a[2] = {0};
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sprintf(a, "%d", i);
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strcat(sentence1, a);
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int ret = write(*writeFd, sentence1, strlen(sentence1) + 1);
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ICUNIT_ASSERT_EQUAL(ret, strlen(sentence1) + 1, ret);
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usleep(10000); // 10000, Used to calculate the delay time.
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}
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*sharedflag = 1;
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ret = close(pipefd[1]);
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ICUNIT_ASSERT_EQUAL(ret, 0, ret);
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exit(0);
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} else {
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close(pipefd[1]);
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// waitting for the sub process has written the sentence first
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while (*sharedflag != 1) {
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usleep(1);
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}
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for (int i = 0; i < totalNum; i++) {
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printf("read\n");
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char sentence1[15] = "Hello World";
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char a[2] = {0};
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sprintf(a, "%d", i);
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strcat(sentence1, a);
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memset(readbuffer, 0, sizeof(readbuffer));
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retValue = read(*readFd, readbuffer, strlen(sentence1) + 1);
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printf("Receive %d bytes data : %s, errno : %d\n", retValue, readbuffer, errno);
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ICUNIT_ASSERT_SIZE_STRING_EQUAL(readbuffer, sentence1, strlen(sentence1), errno);
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}
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}
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ret = waitpid(pid, &status, 0);
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ICUNIT_ASSERT_EQUAL(ret, pid, ret);
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ret = close(pipefd[0]);
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ICUNIT_ASSERT_EQUAL(ret, 0, ret);
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return 0;
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}
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void ItPosixPipe002(void)
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{
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TEST_ADD_CASE(__FUNCTION__, TestPipeMultiProcess, TEST_POSIX, TEST_MEM, TEST_LEVEL0, TEST_FUNCTION);
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}
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