138 lines
4.2 KiB
C
138 lines
4.2 KiB
C
/**
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* @file emncd.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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#include <stdlib.h>
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#include <string.h>
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#include <misc/version.h>
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#include <misc/debug.h>
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#include <base/BLog.h>
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#include <system/BTime.h>
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#include <system/BReactor.h>
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#include <ncd/NCDInterpreter.h>
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#include <ncd/NCDConfigParser.h>
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#include <generated/blog_channel_ncd.h>
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static BReactor reactor;
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static int running;
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static NCDInterpreter interpreter;
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static void interpreter_handler_finished (void *user, int exit_code)
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{
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ASSERT(running)
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fprintf(stderr, "--- interpreter terminated ---\n");
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NCDInterpreter_Free(&interpreter);
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running = 0;
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}
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__attribute__((used))
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int main ()
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{
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BLog_InitStderr();
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fprintf(stderr, "--- initializing emncd version "GLOBAL_VERSION" ---\n");
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BTime_Init();
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BReactor_EmscriptenInit(&reactor);
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running = 0;
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return 0;
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}
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__attribute__((used))
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void emncd_start (const char *program_text, int loglevel)
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{
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ASSERT(program_text);
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ASSERT(loglevel >= 0);
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ASSERT(loglevel <= BLOG_DEBUG);
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if (running) {
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fprintf(stderr, "--- cannot start, interpreter is already running! ---\n");
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return;
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}
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for (int i = 0; i < BLOG_NUM_CHANNELS; i++) {
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BLog_SetChannelLoglevel(i, loglevel);
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}
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// parse program
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NCDProgram program;
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if (!NCDConfigParser_Parse((char *)program_text ,strlen(program_text), &program)) {
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fprintf(stderr, "--- error: failed to parse the program ---\n");
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return;
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}
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// include commands are not implemented currently
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if (NCDProgram_ContainsElemType(&program, NCDPROGRAMELEM_INCLUDE) || NCDProgram_ContainsElemType(&program, NCDPROGRAMELEM_INCLUDE_GUARD)) {
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fprintf(stderr, "--- error: include mechanism is not supported in emncd ---\n");
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NCDProgram_Free(&program);
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return;
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}
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fprintf(stderr, "--- starting interpreter ---\n");
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struct NCDInterpreter_params params;
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params.handler_finished = interpreter_handler_finished;
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params.user = NULL;
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params.retry_time = 5000;
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params.extra_args = NULL;
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params.num_extra_args = 0;
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params.reactor = &reactor;
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if (!NCDInterpreter_Init(&interpreter, program, params)) {
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fprintf(stderr, "--- failed to initialize the interpreter ---\n");
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return;
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}
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running = 1;
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BReactor_EmscriptenSync(&reactor);
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}
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__attribute__((used))
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void emncd_stop (void)
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{
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if (!running) {
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fprintf(stderr, "--- cannot request termination, interpreter is not running! ---\n");
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return;
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}
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fprintf(stderr, "--- requesting interpreter termination ---\n");
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NCDInterpreter_RequestShutdown(&interpreter, 0);
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BReactor_EmscriptenSync(&reactor);
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}
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