mirror of https://github.com/LeOS-GSI/LeOS-Genesis
139 lines
4.2 KiB
C
139 lines
4.2 KiB
C
/**
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* @file stdin_input.c
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* @author Ambroz Bizjak <ambrop7@gmail.com>
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*
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* @section LICENSE
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*
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* Redistribution and use in source and binary forms, with or without
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* modification, are permitted provided that the following conditions are met:
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* 1. Redistributions of source code must retain the above copyright
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* notice, this list of conditions and the following disclaimer.
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* 2. Redistributions in binary form must reproduce the above copyright
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* notice, this list of conditions and the following disclaimer in the
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* documentation and/or other materials provided with the distribution.
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* 3. Neither the name of the author nor the
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* names of its contributors may be used to endorse or promote products
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* derived from this software without specific prior written permission.
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*
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* THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS "AS IS" AND
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* ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED
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* WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE
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* DISCLAIMED. IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR ANY
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* DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES
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* (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES;
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* LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND
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* ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
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* (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF THIS
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* SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
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*
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* @section DESCRIPTION
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*
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* Example program which reads stdin and waits for SIGINT and SIGTERM.
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*/
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#include <stdio.h>
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#include <stddef.h>
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#include <base/DebugObject.h>
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#include <system/BReactor.h>
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#include <system/BNetwork.h>
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#include <system/BConnection.h>
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#include <system/BUnixSignal.h>
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#define BUF_SIZE 64
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BReactor reactor;
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BConnection pipe_con;
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BUnixSignal usignal;
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StreamRecvInterface *source_if;
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uint8_t buf[BUF_SIZE + 1];
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static void signal_handler (void *user, int signo)
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{
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fprintf(stderr, "received %s, exiting\n", (signo == SIGINT ? "SIGINT" : "SIGTERM"));
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// exit event loop
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BReactor_Quit(&reactor, 1);
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}
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static void connection_handler (void *user, int event)
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{
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if (event == BCONNECTION_EVENT_RECVCLOSED) {
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fprintf(stderr, "pipe closed\n");
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} else {
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fprintf(stderr, "pipe error\n");
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}
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// exit event loop
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BReactor_Quit(&reactor, (event == BCONNECTION_EVENT_RECVCLOSED ? 0 : 1));
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}
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static void input_handler_done (void *user, int data_len)
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{
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// receive next chunk
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StreamRecvInterface_Receiver_Recv(source_if, buf, BUF_SIZE);
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// print this chunk
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buf[data_len] = '\0';
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printf("Received: '%s'\n", buf);
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}
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int main ()
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{
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int ret = 1;
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BLog_InitStdout();
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// init network
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if (!BNetwork_GlobalInit()) {
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fprintf(stderr, "BNetwork_GlobalInit failed\n");
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goto fail1;
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}
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// init reactor (event loop)
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if (!BReactor_Init(&reactor)) {
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fprintf(stderr, "BReactor_Init failed\n");
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goto fail1;
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}
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// init signal handling
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sigset_t set;
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sigemptyset(&set);
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sigaddset(&set, SIGINT);
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sigaddset(&set, SIGTERM);
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if (!BUnixSignal_Init(&usignal, &reactor, set, signal_handler, NULL)) {
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fprintf(stderr, "BUnixSignal_Init failed\n");
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goto fail2;
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}
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// init BConnection object backed by the stdin fd
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if (!BConnection_Init(&pipe_con, BConnection_source_pipe(0), &reactor, NULL, connection_handler)) {
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fprintf(stderr, "BConnection_Init failed\n");
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goto fail3;
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}
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// init connection receive interface
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BConnection_RecvAsync_Init(&pipe_con);
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source_if = BConnection_RecvAsync_GetIf(&pipe_con);
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// init receive done callback
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StreamRecvInterface_Receiver_Init(source_if, input_handler_done, NULL);
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// receive first chunk
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StreamRecvInterface_Receiver_Recv(source_if, buf, BUF_SIZE);
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// run event loop
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ret = BReactor_Exec(&reactor);
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BConnection_RecvAsync_Free(&pipe_con);
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BConnection_Free(&pipe_con);
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fail3:
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BUnixSignal_Free(&usignal, 0);
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fail2:
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BReactor_Free(&reactor);
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fail1:
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BLog_Free();
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DebugObjectGlobal_Finish();
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return ret;
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}
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