void main_task
(
uint_32 initial_data
)
{
ENTRY_STRUCT entry;
_mqx_uint result;
_mqx_uint i;
uchar c;
/* Create the log component */
result = _log_create_component();
if (result != MQX_OK) {
printf("Main task: _log_create_component failed");
_task_block();
}
/* Create a log */
result = _log_create(MY_LOG,
10 * (sizeof(ENTRY_STRUCT)/sizeof(_mqx_uint)), 0);
if (result != MQX_OK) {
printf("Main task: _log_create failed");
_task_block();
}
/* Write the data to the log */
printf("Please type in 10 characters:\n");
for (i = 0; i < 10; i++) {
c = getchar();
result = _log_write(MY_LOG, 2, (_mqx_uint)c, i);
if (result != MQX_OK) {
printf("Main task: _log_write failed");
}
}
/* Read data from the log */
printf("\nLog contains:\n");
while (_log_read(MY_LOG, LOG_READ_OLDEST_AND_DELETE, 2,
(LOG_ENTRY_STRUCT_PTR)&entry) == MQX_OK)
{
printf("Time: %lu.%03u%03u, c=%c, i=%u\n",
entry.HEADER.SECONDS,
(_mqx_uint)entry.HEADER.MILLISECONDS,
(_mqx_uint)entry.HEADER.MICROSECONDS,
(uchar)entry.C & 0xff,
entry.I);
}
/* Destroy the log */
_log_destroy(MY_LOG);
_task_block();
}
int main(int argc, char *argv[]) {
int status = 0;
_log_init();
_config_default_init();
_cmdline_process(argc, argv);
if (setregid(config.gid, config.gid) < 0)
_failure("setregid");
if (setreuid(config.uid, config.uid) < 0)
_failure("setreuid");
if (_signal_init() < 0)
_failure("_signal_init");
if (_daemonize() < 0)
_failure("_daemonize");
for (;;) {
if (config.flags & CONFIG_FL_PIDF_CREATE)
_file_pid_create(config.pidf_name);
/* Make sure that we receive a valid status value... otherwise jump out of here. */
if ((status = _bexec(config.binary, config.args)) == -1) {
log_warn("main(): _bexec(): Unable to execute binary '%s': %s.\n", config.binary, strerror(errno));
break;
}
/* Log process termination */
log_info("main(): _bexec(): Execution of '%s' terminated (Exit status: %d).\n", config.binary, WEXITSTATUS(status));
/* Log any signals that caused the termination */
if (WIFSIGNALED(status))
log_info("main(): Child process \'%s\' was terminated due to unhandled signal %d.\n", config.binary, WTERMSIG(status));
/* Check if the exit status refers to a bad runtime state */
if (WEXITSTATUS(status) == PROCESS_EXIT_STATUS_CUSTOM_BAD_RUNTIME_OR_CONFIG) {
log_info("main(): Child process \'%s\' won't be restarted due to runtime or configuration errors.\n", config.binary);
/* If so, do not attempt to restart the process, even if explicitly requested
* by command line options.
*/
break;
}
if (config.flags & CONFIG_FL_PROC_RSTIGN) {
log_info("main(): Restarting child \'%s\' regardless of exit status code.\n", config.binary);
/* Restart child regardless of signals and exit codes */
_main_loop_restart_prepare();
continue;
} else if ((config.flags & CONFIG_FL_PROC_RSTUSIG) && WIFSIGNALED(status) && (WTERMSIG(status) != SIGKILL) && (WTERMSIG(status) != SIGQUIT)) {
log_info("main(): Restarting child \'%s\' since its termination was caused by an unhandled signal other than SIGKILL and SIGQUIT. (Termination signal was %d)\n", config.binary, WTERMSIG(status));
/* Restart child if any unhandled signal other than KILL and QUIT caused its
* termination
*/
_main_loop_restart_prepare();
continue;
} else if ((config.flags & CONFIG_FL_PROC_RESTART) && WEXITSTATUS(status)) {
log_info("main(): Restarting child \'%s\' due to a non-zero exit status code.", config.binary);
/* Restart child is exit status code isn't zero */
_main_loop_restart_prepare();
continue;
}
break;
}
if (status < 0)
_failure("_bexec");
if (config.flags & CONFIG_FL_PIDF_CREATE) {
if (unlink(config.pidf_name) < 0)
_failure("unlink");
}
_config_destroy();
_log_destroy();
return 0;
}
