diff options
author | patacongo <patacongo@7fd9a85b-ad96-42d3-883c-3090e2eb8679> | 2011-12-19 19:24:09 +0000 |
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committer | patacongo <patacongo@7fd9a85b-ad96-42d3-883c-3090e2eb8679> | 2011-12-19 19:24:09 +0000 |
commit | add995c32e86f9de8fa8fc05172435332c25a895 (patch) | |
tree | 0191fde92a5c4dcd55a24b2aa760fa4c88713242 /apps/examples/pipe | |
download | px4-firmware-add995c32e86f9de8fa8fc05172435332c25a895.tar.gz px4-firmware-add995c32e86f9de8fa8fc05172435332c25a895.tar.bz2 px4-firmware-add995c32e86f9de8fa8fc05172435332c25a895.zip |
Completes coding of the PWM module
git-svn-id: https://nuttx.svn.sourceforge.net/svnroot/nuttx/trunk@4200 7fd9a85b-ad96-42d3-883c-3090e2eb8679
Diffstat (limited to 'apps/examples/pipe')
-rw-r--r-- | apps/examples/pipe/Makefile | 93 | ||||
-rw-r--r-- | apps/examples/pipe/interlock_test.c | 224 | ||||
-rw-r--r-- | apps/examples/pipe/pipe.h | 74 | ||||
-rw-r--r-- | apps/examples/pipe/pipe_main.c | 189 | ||||
-rw-r--r-- | apps/examples/pipe/redirect_test.c | 326 | ||||
-rw-r--r-- | apps/examples/pipe/transfer_test.c | 242 |
6 files changed, 1148 insertions, 0 deletions
diff --git a/apps/examples/pipe/Makefile b/apps/examples/pipe/Makefile new file mode 100644 index 000000000..3bcc9b5f7 --- /dev/null +++ b/apps/examples/pipe/Makefile @@ -0,0 +1,93 @@ +############################################################################ +# apps/examples/pipe/Makefile +# +# Copyright (C) 2008, 2010-2011 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. +# +############################################################################ + +-include $(TOPDIR)/.config +-include $(TOPDIR)/Make.defs +include $(APPDIR)/Make.defs + +# Pipe Example + +ASRCS = +CSRCS = pipe_main.c transfer_test.c interlock_test.c redirect_test.c + +AOBJS = $(ASRCS:.S=$(OBJEXT)) +COBJS = $(CSRCS:.c=$(OBJEXT)) + +SRCS = $(ASRCS) $(CSRCS) +OBJS = $(AOBJS) $(COBJS) + +ifeq ($(WINTOOL),y) + BIN = "${shell cygpath -w $(APPDIR)/libapps$(LIBEXT)}" +else + BIN = "$(APPDIR)/libapps$(LIBEXT)" +endif + +ROOTDEPPATH = --dep-path . + +# Common build + +VPATH = + +all: .built +.PHONY: clean depend distclean + +$(AOBJS): %$(OBJEXT): %.S + $(call ASSEMBLE, $<, $@) + +$(COBJS): %$(OBJEXT): %.c + $(call COMPILE, $<, $@) + +.built: $(OBJS) + @( for obj in $(OBJS) ; do \ + $(call ARCHIVE, $(BIN), $${obj}); \ + done ; ) + @touch .built + +context: + +.depend: Makefile $(SRCS) + @$(MKDEP) $(ROOTDEPPATH) $(CC) -- $(CFLAGS) -- $(SRCS) >Make.dep + @touch $@ + +depend: .depend + +clean: + @rm -f *.o *~ .*.swp .built + $(call CLEAN) + +distclean: clean + @rm -f Make.dep .depend + +-include Make.dep diff --git a/apps/examples/pipe/interlock_test.c b/apps/examples/pipe/interlock_test.c new file mode 100644 index 000000000..e049a65f6 --- /dev/null +++ b/apps/examples/pipe/interlock_test.c @@ -0,0 +1,224 @@ +/**************************************************************************** + * 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); + if (close(fd) != 0) + { + fprintf(stderr, "null_writer: close failed: %d\n", errno); + } + 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); + if (close(fd) != 0) + { + fprintf(stderr, "interlock_test: close failed: %d\n", errno); + } + + /* 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: + if (close(fd) != 0) + { + fprintf(stderr, "interlock_test: close failed: %d\n", errno); + } +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/apps/examples/pipe/pipe.h b/apps/examples/pipe/pipe.h new file mode 100644 index 000000000..2c18fd868 --- /dev/null +++ b/apps/examples/pipe/pipe.h @@ -0,0 +1,74 @@ +/**************************************************************************** + * 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" + +#ifndef CONFIG_EXAMPLES_PIPE_STACKSIZE +# define CONFIG_EXAMPLES_PIPE_STACKSIZE 1024 +#endif + +/**************************************************************************** + * Public Types + ****************************************************************************/ + +/**************************************************************************** + * Public Variables + ****************************************************************************/ + +/**************************************************************************** + * Public Function Prototypes + ****************************************************************************/ + +extern int transfer_test(int fdin, int fdout); +extern int interlock_test(void); +extern int redirection_test(void); + +#endif /* __EXAMPLES_PIPE_PIPE_H */ diff --git a/apps/examples/pipe/pipe_main.c b/apps/examples/pipe/pipe_main.c new file mode 100644 index 000000000..1f0f73032 --- /dev/null +++ b/apps/examples/pipe/pipe_main.c @@ -0,0 +1,189 @@ +/**************************************************************************** + * examples/pipe/pipe_main.c + * + * Copyright (C) 2008-2009, 2011 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 <stdio.h> +#include <unistd.h> +#include <sched.h> +#include <fcntl.h> +#include <errno.h> + +#include "pipe.h" + +/**************************************************************************** + * Definitions + ****************************************************************************/ + +/**************************************************************************** + * Private Types + ****************************************************************************/ + +/**************************************************************************** + * Private Data + ****************************************************************************/ + +/**************************************************************************** + * Private Functions + ****************************************************************************/ + +/**************************************************************************** + * Public Functions + ****************************************************************************/ + +/**************************************************************************** + * Name: user_start + ****************************************************************************/ + +int user_start(int argc, char *argv[]) +{ + int filedes[2]; + int ret; + + /* Test FIFO logic */ + + printf("\nuser_start: Performing FIFO test\n"); + ret = mkfifo(FIFO_PATH1, 0666); + if (ret < 0) + { + fprintf(stderr, "user_start: mkfifo failed with errno=%d\n", errno); + return 1; + } + + /* Open one end of the FIFO for reading and the other end for writing. NOTE: + * the following might not work on most FIFO implementations because the attempt + * to open just one end of the FIFO for writing might block. The NuttX FIFOs block + * only on open for read-only (see interlock_test()). + */ + + filedes[1] = open(FIFO_PATH1, O_WRONLY); + if (filedes[1] < 0) + { + fprintf(stderr, "user_start: Failed to open FIFO %s for writing, errno=%d\n", + FIFO_PATH1, errno); + return 2; + } + + filedes[0] = open(FIFO_PATH1, O_RDONLY); + if (filedes[0] < 0) + { + fprintf(stderr, "user_start: Failed to open FIFO %s for reading, errno=%d\n", + FIFO_PATH1, errno); + if (close(filedes[1]) != 0) + { + fprintf(stderr, "user_start: close failed: %d\n", errno); + } + return 3; + } + + /* Then perform the test using those file descriptors */ + + ret = transfer_test(filedes[0], filedes[1]); + if (close(filedes[0]) != 0) + { + fprintf(stderr, "user_start: close failed: %d\n", errno); + } + if (close(filedes[1]) != 0) + { + fprintf(stderr, "user_start: close failed: %d\n", errno); + } + /* unlink(FIFO_PATH1); fails */ + + if (ret != 0) + { + fprintf(stderr, "user_start: FIFO test FAILED (%d)\n", ret); + return 4; + } + printf("user_start: FIFO test PASSED\n"); + + /* Test PIPE logic */ + + printf("\nuser_start: Performing pipe test\n"); + ret = pipe(filedes); + if (ret < 0) + { + fprintf(stderr, "user_start: pipe failed with errno=%d\n", errno); + return 5; + } + + /* Then perform the test using those file descriptors */ + + ret = transfer_test(filedes[0], filedes[1]); + if (close(filedes[0]) != 0) + { + fprintf(stderr, "user_start: close failed: %d\n", errno); + } + if (close(filedes[1]) != 0) + { + fprintf(stderr, "user_start: close failed: %d\n", errno); + } + + if (ret != 0) + { + fprintf(stderr, "user_start: PIPE test FAILED (%d)\n", ret); + return 6; + } + printf("user_start: PIPE test PASSED\n"); + + /* Perform the FIFO interlock test */ + + printf("\nuser_start: Performing pipe interlock test\n"); + ret = interlock_test(); + if (ret != 0) + { + fprintf(stderr, "user_start: FIFO interlock test FAILED (%d)\n", ret); + return 7; + } + printf("user_start: PIPE interlock test PASSED\n"); + + /* Perform the pipe redirection test */ + + printf("\nuser_start: Performing redirection test\n"); + ret = redirection_test(); + if (ret != 0) + { + fprintf(stderr, "user_start: FIFO redirection test FAILED (%d)\n", ret); + return 7; + } + printf("user_start: PIPE redirection test PASSED\n"); + + fflush(stdout); + return 0; +} diff --git a/apps/examples/pipe/redirect_test.c b/apps/examples/pipe/redirect_test.c new file mode 100644 index 000000000..45e86c356 --- /dev/null +++ b/apps/examples/pipe/redirect_test.c @@ -0,0 +1,326 @@ +/**************************************************************************** + * examples/pipe/redirect_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 <stdlib.h> +#include <unistd.h> +#include <sched.h> +#include <semaphore.h> +#include <errno.h> + +#include "pipe.h" + +/**************************************************************************** + * Definitions + ****************************************************************************/ + +#define READ_SIZE 37 + +/**************************************************************************** + * Private Types + ****************************************************************************/ + +/**************************************************************************** + * Private Data + ****************************************************************************/ + +static sem_t g_rddone; + +/**************************************************************************** + * Private Functions + ****************************************************************************/ + +/**************************************************************************** + * Name: redirect_reader + ****************************************************************************/ + +static int redirect_reader(int argc, char *argv[]) +{ + char buffer[READ_SIZE]; + int fdin; + int fdout; + int ret; + int nbytes = 0; + + printf("redirect_reader: started with fdin=%s\n", argv[1]); + + /* Convert the fdin to binary */ + + fdin = atoi(argv[1]); + fdout = atoi(argv[2]); + + /* Close fdout -- we don't need it */ + + ret = close(fdout); + if (ret != 0) + { + fprintf(stderr, "redirect_reader: failed to close fdout=%d\n", fdout); + return 1; + } + + /* Re-direct the fdin to stdin */ + + ret = dup2(fdin, 0); + if (ret != 0) + { + fprintf(stderr, "redirect_reader: dup2 failed: %d\n", errno); + close(fdin); + return 2; + } + + /* Close the original file descriptor */ + + ret = close(fdin); + if (ret != 0) + { + fprintf(stderr, "redirect_reader: failed to close fdin=%d\n", fdin); + return 3; + } + + /* Then read from stdin until we hit the end of file */ + + fflush(stdout); + for (;;) + { + /* Read from stdin */ + + ret = read(0, buffer, READ_SIZE); + if (ret < 0 ) + { + fprintf(stderr, "redirect_reader: read failed, errno=%d\n", errno); + return 4; + } + else if (ret == 0) + { + break; + } + nbytes += ret; + + /* Echo to stdout */ + + ret = write(1, buffer, ret); + if (ret < 0) + { + fprintf(stderr, "redirect_reader: read failed, errno=%d\n", errno); + return 5; + } + } + + printf("redirect_reader: %d bytes read\n", nbytes); + ret = close(0); + if (ret != 0) + { + fprintf(stderr, "redirect_reader: failed to close fd=0\n"); + return 6; + } + + sem_post(&g_rddone); + printf("redirect_reader: Returning success\n"); + return 0; +} + +/**************************************************************************** + * Name: redirect_writer + ****************************************************************************/ + +static int redirect_writer(int argc, char *argv[]) +{ + int fdin; + int fdout; + int nbytes = 0; + int ret; + + fprintf(stderr, "redirect_writer: started with fdout=%s\n", argv[2]); + + /* Convert the fdout to binary */ + + fdin = atoi(argv[1]); + fdout = atoi(argv[2]); + + /* Close fdin -- we don't need it */ + + ret = close(fdin); + if (ret != 0) + { + fprintf(stderr, "redirect_reader: failed to close fdin=%d\n", fdin); + return 1; + } + + /* Re-direct the fdout to stdout */ + + ret = dup2(fdout, 1); + if (ret != 0) + { + fprintf(stderr, "redirect_writer: dup2 failed: %d\n", errno); + return 2; + } + + /* Close the original file descriptor */ + + ret = close(fdout); + if (ret != 0) + { + fprintf(stderr, "redirect_reader: failed to close fdout=%d\n", fdout); + return 3; + } + + /* Then write a bunch of stuff to stdout */ + + fflush(stderr); + nbytes += printf("\nFour score and seven years ago our fathers brought forth on this continent a new nation,\n"); + nbytes += printf("conceived in Liberty, and dedicated to the proposition that all men are created equal.\n"); + nbytes += printf("\nNow we are engaged in a great civil war, testing whether that nation, or any nation, so\n"); + nbytes += printf("conceived and so dedicated, can long endure. We are met on a great battle-field of that war.\n"); + nbytes += printf("We have come to dedicate a portion of that field, as a final resting place for those who here\n"); + nbytes += printf("gave their lives that that nation might live. It is altogether fitting and proper that we\n"); + nbytes += printf("should do this.\n"); + nbytes += printf("\nBut, in a larger sense, we can not dedicate - we can not consecrate - we can not hallow - this ground.\n"); + nbytes += printf("The brave men, living and dead, who struggled here, have consecrated it, far above our poor power\n"); + nbytes += printf("to add or detract. The world will little note, nor long remember what we say here, but it can\n"); + nbytes += printf("never forget what they did here. It is for us the living, rather, to be dedicated here to the\n"); + nbytes += printf("unfinished work which they who fought here have thus far so nobly advanced. It is rather for us to\n"); + nbytes += printf("be here dedicated to the great task remaining before us - that from these honored dead we take\n"); + nbytes += printf("increased devotion to that cause for which they gave the last full measure of devotion - that we\n"); + nbytes += printf("here highly resolve that these dead shall not have died in vain - that this nation, under God,\n"); + nbytes += printf("shall have a new birth of freedom - and that government of the people, by the people, for the\n"); + nbytes += printf("people, shall not perish from the earth.\n\n"); + fflush(stdout); + + fprintf(stderr, "redirect_writer: %d bytes written\n", nbytes); + + ret = close(1); + if (ret != 0) + { + fprintf(stderr, "redirect_writer: failed to close fd=1\n"); + return 4; + } + + fprintf(stderr, "redirect_writer: Returning success\n"); + return 0; +} + +/**************************************************************************** + * Public Functions + ****************************************************************************/ + +/**************************************************************************** + * Name: redirection_test + ****************************************************************************/ + +int redirection_test(void) +{ + const char *argv[3]; + char buffer1[8]; + char buffer2[8]; + int readerid; + int writerid; + int filedes[2]; + int ret; + + sem_init(&g_rddone, 0, 0); + + /* Create the pipe */ + + ret = pipe(filedes); + if (ret < 0) + { + fprintf(stderr, "redirection_test: pipe failed with errno=%d\n", errno); + return 5; + } + + sprintf(buffer1, "%d", filedes[0]); + argv[0] = buffer1; + sprintf(buffer2, "%d", filedes[1]); + argv[1] = buffer2; + argv[2] = NULL; + + /* Start redirect_reader thread */ + + printf("redirection_test: Starting redirect_reader task with fd=%d\n", filedes[0]); + readerid = task_create("redirect_reader", 50, CONFIG_EXAMPLES_PIPE_STACKSIZE, redirect_reader, argv); + if (readerid < 0) + { + fprintf(stderr, "redirection_test: Failed to create redirect_writer task: %d\n", errno); + return 1; + } + + /* Start redirect_writer task */ + + printf("redirection_test: Starting redirect_writer task with fd=%d\n", filedes[1]); + writerid = task_create("redirect_writer", 50, CONFIG_EXAMPLES_PIPE_STACKSIZE, redirect_writer, argv); + if (writerid < 0) + { + fprintf(stderr, "redirection_test: Failed to create redirect_writer task: %d\n", errno); + ret = task_delete(readerid); + if (ret != 0) + { + fprintf(stderr, "redirection_test: Failed to delete redirect_reader task %d\n", errno); + } + return 2; + } + + /* We should be able to close the pipe file descriptors now. */ + + if (close(filedes[0]) != 0) + { + fprintf(stderr, "user_start: close failed: %d\n", errno); + } + if (close(filedes[1]) != 0) + { + fprintf(stderr, "user_start: close failed: %d\n", errno); + } + + if (ret != 0) + { + fprintf(stderr, "user_start: PIPE test FAILED (%d)\n", ret); + return 6; + } + + /* Wait for redirect_writer thread to complete */ + + printf("redirection_test: Waiting...\n"); + fflush(stdout); + sem_wait(&g_rddone); + + printf("redirection_test: returning %d\n", ret); + return ret; +} + 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; +} + |