diff options
Diffstat (limited to 'nuttx/examples/pipe')
-rw-r--r-- | nuttx/examples/pipe/Makefile | 2 | ||||
-rw-r--r-- | nuttx/examples/pipe/interlock_test.c | 215 | ||||
-rw-r--r-- | nuttx/examples/pipe/pipe.h | 69 | ||||
-rw-r--r-- | nuttx/examples/pipe/pipe_main.c | 189 | ||||
-rw-r--r-- | nuttx/examples/pipe/transfer_test.c | 243 |
5 files changed, 534 insertions, 184 deletions
diff --git a/nuttx/examples/pipe/Makefile b/nuttx/examples/pipe/Makefile index 1ed4f73b2..202a8d248 100644 --- a/nuttx/examples/pipe/Makefile +++ b/nuttx/examples/pipe/Makefile @@ -38,7 +38,7 @@ ASRCS = AOBJS = $(ASRCS:.S=$(OBJEXT)) -CSRCS = pipe_main.c +CSRCS = pipe_main.c transfer_test.c interlock_test.c COBJS = $(CSRCS:.c=$(OBJEXT)) SRCS = $(ASRCS) $(CSRCS) diff --git a/nuttx/examples/pipe/interlock_test.c b/nuttx/examples/pipe/interlock_test.c new file mode 100644 index 000000000..388bef100 --- /dev/null +++ b/nuttx/examples/pipe/interlock_test.c @@ -0,0 +1,215 @@ +/**************************************************************************** + * examples/pipe/interlock_test.c + * + * Copyright (C) 2008 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 <sys/stat.h> + +#include <sys/types.h> + +#include <stdio.h> +#include <fcntl.h> +#include <unistd.h> +#include <errno.h> + +#include "pipe.h" + +/**************************************************************************** + * Definitions + ****************************************************************************/ + +/**************************************************************************** + * Private Types + ****************************************************************************/ + +/**************************************************************************** + * Private Data + ****************************************************************************/ + +/**************************************************************************** + * Private Functions + ****************************************************************************/ + +/**************************************************************************** + * Name: null_writer + ****************************************************************************/ + +static void *null_writer(pthread_addr_t pvarg) +{ + int fd; + + /* Wait a bit */ + + printf("null_writer: started -- sleeping\n"); + sleep(5); + + /* Then open the FIFO for write access */ + + printf("null_writer: Opening FIFO for write access\n"); + fd = open(FIFO_PATH2, O_WRONLY); + if (fd < 0) + { + fprintf(stderr, "null_writer: Failed to open FIFO %s for writing, errno=%d\n", + FIFO_PATH2, errno); + return (void*)1; + } + + /* Wait a bit more */ + + printf("null_writer: Opened %s for writing -- sleeping\n", FIFO_PATH2); + sleep(5); + + /* Then close the FIFO */ + + printf("null_writer: Closing %s\n", FIFO_PATH2); + close(fd); + sleep(5); + + printf("null_writer: Returning success\n"); + return (void*)0; +} + +/**************************************************************************** + * Public Functions + ****************************************************************************/ + +/**************************************************************************** + * Name: interlock_test + ****************************************************************************/ + +int interlock_test(void) +{ + pthread_t writerid; + void *value; + char data[16]; + ssize_t nbytes; + int fd; + int ret; + + /* Create a FIFO */ + + ret = mkfifo(FIFO_PATH2, 0666); + if (ret < 0) + { + fprintf(stderr, "interlock_test: mkfifo failed with errno=%d\n", errno); + return 1; + } + + /* Start the null_writer_thread */ + + printf("interlock_test: Starting null_writer thread\n"); + ret = pthread_create(&writerid, NULL, null_writer, (pthread_addr_t)NULL); + if (ret != 0) + { + fprintf(stderr, "interlock_test: Failed to create null_writer thread, error=%d\n", ret); + ret = 2; + goto errout_with_fifo; + } + + /* Open one end of the FIFO for reading. This open call should block until the + * null_writer thread opens the other end of the FIFO for writing. + */ + + printf("interlock_test: Opening FIFO for read access\n"); + fd = open(FIFO_PATH2, O_RDONLY); + if (fd < 0) + { + fprintf(stderr, "interlock_test: Failed to open FIFO %s for reading, errno=%d\n", + FIFO_PATH2, errno); + ret = 3; + goto errout_with_thread; + } + + /* Attempt to read one byte from the FIFO. This should return end-of-file because + * the null_writer closes the FIFO without writing anything. + */ + + printf("interlock_test: Reading from %s\n", FIFO_PATH2); + nbytes = read(fd, data, 16); + if (nbytes < 0 ) + { + fprintf(stderr, "interlock_test: read failed, errno=%d\n", errno); + ret = 4; + goto errout_with_file; + } + else if (ret != 0) + { + fprintf(stderr, "interlock_test: Read %d bytes of data -- aborting: %d\n", nbytes); + ret = 5; + goto errout_with_file; + } + + /* Close the file */ + + printf("interlock_test: Closing %s\n", FIFO_PATH2); + close(fd); + + /* Wait for null_writer thread to complete */ + + printf("interlock_test: Waiting for null_writer thread\n"); + ret = pthread_join(writerid, &value); + if (ret != 0) + { + fprintf(stderr, "interlock_test: pthread_join failed, error=%d\n", ret); + ret = 6; + goto errout_with_fifo; + } + else + { + printf("interlock_test: writer returned %d\n", (int)value); + if (value != (void*)0) + { + ret = 7; + goto errout_with_fifo; + } + } + + /* unlink(FIFO_PATH2); */ + printf("interlock_test: Returning success\n"); + return 0; + +errout_with_file: + close(fd); +errout_with_thread: + pthread_detach(writerid); + pthread_cancel(writerid); +errout_with_fifo: + /* unlink(FIFO_PATH2); */ + printf("interlock_test: Returning %d\n", ret); + return ret; +} diff --git a/nuttx/examples/pipe/pipe.h b/nuttx/examples/pipe/pipe.h new file mode 100644 index 000000000..9f5c8e591 --- /dev/null +++ b/nuttx/examples/pipe/pipe.h @@ -0,0 +1,69 @@ +/**************************************************************************** + * examples/pipe/pipe.h + * + * Copyright (C) 2008 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. + * + ****************************************************************************/ + +#ifndef __EXAMPLES_PIPE_PIPE_H +#define __EXAMPLES_PIPE_PIPE_H + +/**************************************************************************** + * Compilation Switches + ****************************************************************************/ + +/**************************************************************************** + * Included Files + ****************************************************************************/ + +/**************************************************************************** + * Definitions + ****************************************************************************/ + +#define FIFO_PATH1 "/tmp/testfifo-1" +#define FIFO_PATH2 "/tmp/testfifo-2" + +/**************************************************************************** + * Public Types + ****************************************************************************/ + +/**************************************************************************** + * Public Variables + ****************************************************************************/ + +/**************************************************************************** + * Public Function Prototypes + ****************************************************************************/ + +extern int transfer_test(int fdin, int fdout); +extern int interlock_test(void); + +#endif /* __EXAMPLES_PIPE_PIPE_H */ diff --git a/nuttx/examples/pipe/pipe_main.c b/nuttx/examples/pipe/pipe_main.c index 47815f00e..d6764c247 100644 --- a/nuttx/examples/pipe/pipe_main.c +++ b/nuttx/examples/pipe/pipe_main.c @@ -1,5 +1,5 @@ /**************************************************************************** - * pipe_main.c + * examples/pipe/pipe_main.c * * Copyright (C) 2008 Gregory Nutt. All rights reserved. * Author: Gregory Nutt <spudmonkey@racsa.co.cr> @@ -37,34 +37,22 @@ * Included Files ****************************************************************************/ -#include <sys/types.h> +#include <nuttx/config.h> #include <sys/stat.h> +#include <sys/types.h> + #include <stdio.h> -#include <stdlib.h> #include <unistd.h> -#include <pthread.h> -#include <string.h> #include <fcntl.h> #include <errno.h> +#include "pipe.h" + /**************************************************************************** * Definitions ****************************************************************************/ -#define FIFO_PATH1 "/tmp/testfifo-1" -#define FIFO_PATH2 "/tmp/testfifo-2" - -#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 ****************************************************************************/ @@ -78,171 +66,6 @@ ****************************************************************************/ /**************************************************************************** - * Name: reader - ****************************************************************************/ - -static void *reader(pthread_addr_t pvarg) -{ - char buffer[READ_SIZE]; - int fd = (int)pvarg; - int ret; - int nbytes; - int value; - int ndx; - - printf("reader: started\n"); - for (nbytes = 0, value = 0; nbytes < NREAD_BYTES;) - { - ret = read(fd, buffer, READ_SIZE); - if (ret < 0 ) - { - fprintf(stderr, "reader: read failed, errno=%d\n", errno); - return (void*)1; - } - else if (ret == 0) - { - if (nbytes < NREAD_BYTES) - { - fprintf(stderr, "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, "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, "reader: Too many bytes read -- aborting: %d\n", nbytes); - return (void*)4; - } - } - printf("reader: %d bytes read\n", nbytes); - return (void*)0; -} - -/**************************************************************************** - * Name: writer - ****************************************************************************/ - -static void *writer(pthread_addr_t pvarg) -{ - char buffer[WRITE_SIZE]; - int fd = (int)pvarg; - int ret; - int i; - - printf("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, "writer: write failed, errno=%d\n", errno); - return (void*)1; - } - else if (ret != WRITE_SIZE) - { - fprintf(stderr, "writer: Unexpected write size=%d\n", ret); - return (void*)2; - } - } - printf("writer: %d bytes written\n", NWRITE_BYTES); - return (void*)0; -} - -/**************************************************************************** - * Name: transfer_test - ****************************************************************************/ - -static int transfer_test(int fdin, int fdout) -{ - pthread_t readerid; - pthread_t writerid; - void *value; - int tmp; - int ret; - - /* Start reader thread */ - - printf("transfer_test: Starting reader thread\n"); - ret = pthread_create(&readerid, NULL, reader, (pthread_addr_t)fdin); - if (ret != 0) - { - fprintf(stderr, "transfer_test: Failed to create reader thread, error=%d\n", ret); - return 1; - } - - /* Start writer thread */ - - printf("transfer_test: Starting writer thread\n"); - ret = pthread_create(&writerid, NULL, writer, (pthread_addr_t)fdout); - if (ret != 0) - { - fprintf(stderr, "transfer_test: Failed to create writer thread, error=%d\n", ret); - pthread_detach(readerid); - ret = pthread_cancel(readerid); - if (ret != 0) - { - fprintf(stderr, "transfer_test: Failed to cancel reader thread, error=%d\n", ret); - } - return 2; - } - - /* Wait for writer thread to complete */ - - printf("transfer_test: Waiting for 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: writer returned %d\n", ret); - } - - /* Wait for reader thread to complete */ - - printf("transfer_test: Waiting for 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: reader returned %d\n", tmp); - } - - if (ret == 0) - { - ret = tmp; - } - printf("transfer_test: returning %d\n", ret); - return ret; -} - -/**************************************************************************** * Name: null_writer ****************************************************************************/ diff --git a/nuttx/examples/pipe/transfer_test.c b/nuttx/examples/pipe/transfer_test.c new file mode 100644 index 000000000..43bd284cc --- /dev/null +++ b/nuttx/examples/pipe/transfer_test.c @@ -0,0 +1,243 @@ +/**************************************************************************** + * examples/pipe/transfer_test.c + * + * Copyright (C) 2008 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 <sys/types.h> + +#include <stdio.h> +#include <unistd.h> +#include <errno.h> + +#include "pipe.h" + +/**************************************************************************** + * 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; +} + |