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Diffstat (limited to 'apps/examples/pipe/transfer_test.c')
| -rw-r--r-- | apps/examples/pipe/transfer_test.c | 242 |
1 files changed, 242 insertions, 0 deletions
diff --git a/apps/examples/pipe/transfer_test.c b/apps/examples/pipe/transfer_test.c new file mode 100644 index 000000000..cb8cad04a --- /dev/null +++ b/apps/examples/pipe/transfer_test.c @@ -0,0 +1,242 @@ +/**************************************************************************** + * examples/pipe/transfer_test.c + * + * Copyright (C) 2008-2009 Gregory Nutt. All rights reserved. + * Author: Gregory Nutt <spudmonkey@racsa.co.cr> + * + * Redistribution and use in source and binary forms, with or without + * modification, are permitted provided that the following conditions + * are met: + * + * 1. Redistributions of source code must retain the above copyright + * notice, this list of conditions and the following disclaimer. + * 2. Redistributions in binary form must reproduce the above copyright + * notice, this list of conditions and the following disclaimer in + * the documentation and/or other materials provided with the + * distribution. + * 3. Neither the name NuttX nor the names of its contributors may be + * used to endorse or promote products derived from this software + * without specific prior written permission. + * + * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS + * "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT + * LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS + * FOR A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE + * COPYRIGHT OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, + * INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, + * BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS + * OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED + * AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT + * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN + * ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE + * POSSIBILITY OF SUCH DAMAGE. + * + ****************************************************************************/ + +/**************************************************************************** + * Included Files + ****************************************************************************/ + +#include <nuttx/config.h> + +#include <stdio.h> +#include <unistd.h> +#include <errno.h> + +#include "pipe.h" + +/**************************************************************************** + * Pre-proecessor Definitions + ****************************************************************************/ + +#define MAX_BYTE 13 + +#define WRITE_SIZE MAX_BYTE +#define NWRITES 1400 +#define NWRITE_BYTES (NWRITES * WRITE_SIZE) + +#define READ_SIZE (2*MAX_BYTE) +#define NREADS (NWRITES / 2) +#define NREAD_BYTES NWRITE_BYTES + +/**************************************************************************** + * Private Types + ****************************************************************************/ + +/**************************************************************************** + * Private Data + ****************************************************************************/ + +/**************************************************************************** + * Private Functions + ****************************************************************************/ + +/**************************************************************************** + * Name: transfer_reader + ****************************************************************************/ + +static void *transfer_reader(pthread_addr_t pvarg) +{ + char buffer[READ_SIZE]; + int fd = (int)pvarg; + int ret; + int nbytes; + int value; + int ndx; + + printf("transfer_reader: started\n"); + for (nbytes = 0, value = 0; nbytes < NREAD_BYTES;) + { + ret = read(fd, buffer, READ_SIZE); + if (ret < 0 ) + { + fprintf(stderr, "transfer_reader: read failed, errno=%d\n", errno); + return (void*)1; + } + else if (ret == 0) + { + if (nbytes < NREAD_BYTES) + { + fprintf(stderr, "transfer_reader: Too few bytes read -- aborting: %d\n", nbytes); + return (void*)2; + } + break; + } + for (ndx = 0; ndx < ret; ndx++) + { + if (value >= WRITE_SIZE) + { + value = 0; + } + if (buffer[ndx] != value) + { + fprintf(stderr, "transfer_reader: Byte %d, expected %d, found %d\n", + nbytes + ndx, value, buffer[ndx]); + return (void*)3; + } + value++; + } + nbytes += ret; + if (nbytes > NREAD_BYTES) + { + fprintf(stderr, "transfer_reader: Too many bytes read -- aborting: %d\n", nbytes); + return (void*)4; + } + } + printf("transfer_reader: %d bytes read\n", nbytes); + return (void*)0; +} + +/**************************************************************************** + * Name: transfer_writer + ****************************************************************************/ + +static void *transfer_writer(pthread_addr_t pvarg) +{ + char buffer[WRITE_SIZE]; + int fd = (int)pvarg; + int ret; + int i; + + printf("transfer_writer: started\n"); + for (i = 0; i < WRITE_SIZE; i++) + { + buffer[i] = i; + } + + for (i = 0; i < NWRITES; i++) + { + ret = write(fd, buffer, WRITE_SIZE); + if (ret < 0 ) + { + fprintf(stderr, "transfer_writer: write failed, errno=%d\n", errno); + return (void*)1; + } + else if (ret != WRITE_SIZE) + { + fprintf(stderr, "transfer_writer: Unexpected write size=%d\n", ret); + return (void*)2; + } + } + printf("transfer_writer: %d bytes written\n", NWRITE_BYTES); + return (void*)0; +} + +/**************************************************************************** + * Public Functions + ****************************************************************************/ + +/**************************************************************************** + * Name: transfer_test + ****************************************************************************/ + +int transfer_test(int fdin, int fdout) +{ + pthread_t readerid; + pthread_t writerid; + void *value; + int tmp; + int ret; + + /* Start transfer_reader thread */ + + printf("transfer_test: Starting transfer_reader thread\n"); + ret = pthread_create(&readerid, NULL, transfer_reader, (pthread_addr_t)fdin); + if (ret != 0) + { + fprintf(stderr, "transfer_test: Failed to create transfer_reader thread, error=%d\n", ret); + return 1; + } + + /* Start transfer_writer thread */ + + printf("transfer_test: Starting transfer_writer thread\n"); + ret = pthread_create(&writerid, NULL, transfer_writer, (pthread_addr_t)fdout); + if (ret != 0) + { + fprintf(stderr, "transfer_test: Failed to create transfer_writer thread, error=%d\n", ret); + pthread_detach(readerid); + ret = pthread_cancel(readerid); + if (ret != 0) + { + fprintf(stderr, "transfer_test: Failed to cancel transfer_reader thread, error=%d\n", ret); + } + return 2; + } + + /* Wait for transfer_writer thread to complete */ + + printf("transfer_test: Waiting for transfer_writer thread\n"); + ret = pthread_join(writerid, &value); + if (ret != 0) + { + fprintf(stderr, "transfer_test: pthread_join failed, error=%d\n", ret); + } + else + { + ret = (int)value; + printf("transfer_test: transfer_writer returned %d\n", ret); + } + + /* Wait for transfer_reader thread to complete */ + + printf("transfer_test: Waiting for transfer_reader thread\n"); + tmp = pthread_join(readerid, &value); + if (tmp != 0) + { + fprintf(stderr, "transfer_test: pthread_join failed, error=%d\n", ret); + } + else + { + tmp = (int)value; + printf("transfer_test: transfer_reader returned %d\n", tmp); + } + + if (ret == 0) + { + ret = tmp; + } + printf("transfer_test: returning %d\n", ret); + return ret; +} + |