int main()
{
if(my_fork()) {
printf("I'm parent: My PID=%d\n",my_getpid());
}
else {
printf("I'm child: My PID=%d and my parent %d\n",
my_getpid(), my_getppid());
}
}
int treeTest(){
int i,j,k,total,s1,s2,count,t;
char str[1024],dir[1024];
struct dirent **namelist;
strcpy(dir,default_path);
total = scandir(dir, &namelist, 0, alphasort);
printf("path=%s,total=%d\n",dir,total);
for(i=0;i<total;i++){
strcpy(str,namelist[i]->d_name);
if(str[0]>='0'&&str[0]<='9')
count++;
}
printf("进程数:%d\n",count);
info file[1024];
i=0;t=0;
while(i<total){
FILE *fp;
char path[1024],name[1024];
int pid,ppid;
strcpy(str,namelist[i]->d_name);
strcpy(path,default_path);
//printf("%s\n",str);
if(str[0]>='0'&&str[0]<='9'){
strcat(path,str);
strcat(path,"/status");
fp=fopen(path,"r");
while(!feof(fp)){
fgets(str,1024,fp);
//pid
if((s1=my_getpid(str))!=0)
pid=s1;
//ppid
if((s2=my_getppid(str))!=0)
ppid=s2;
//name
strcpy(file[t].name,my_getName(str));
file[t].pid=pid;
file[t].ppid=ppid;
}
fclose(fp);
printf("%d,%s,pid=%d,ppid=%d,name=%s#\n",t,path,file[t].pid,file[t].ppid,file[t].name);
t++;
}
i++;
}
memset(&file->flag,0,count);
memset(&file->rec,0,count);
print_pstree(file,count,0,0);
while (1){;}
}
static int init_mysh(t_term *s_term, char **environ)
{
char *env_path;
my_bzero((void *)s_term, sizeof(*s_term));
if (environ && *environ)
{
get_environ(s_term, environ);
static_term(s_term);
init_signals();
s_term->tsave = init_termcap(s_term->environ);
s_term->pid = my_getpid();
s_term->progs = NULL;
if ((env_path = my_getenv(environ, "PATH="))
&& (s_term->progs = get_path_progs(env_path))
&& !add_builtins(s_term->progs))
return (1);
}
return (0);
}
/** Processes command line arguments using argtable library
<p>To add a smafeopt class backed command line argument,
perform the following steps:
<ol>
<li>Add public member in smafeopt.h (smafe)
<li>Assign default value in smafeopt.cpp (smafe)
<li>Define a new struct (arg_lit, arg_int etc) in this method
(processCommandLineArguments()) and add details (shortopts, longopts)
according to appropriate constructor
<li>Add this struct to void* argtable[] array
<li>Transfer the value from the struct to the smafeopt instance
(<i>if (nerrors == 0)</i> block)
</ol>
* @param argc number of command line arguments (from main())
* @param argv array of c-strings (from main())
* @param so initialized, empty smafeopt instance that is to be filled
*/
void processCommandLineArguments(int argc, char* argv[]) {
/* Define the allowable command line options, collecting them in argtable[] */
/* Syntax 1: command line arguments and file or dir */
// daemon options
struct arg_str
*arg_daemonID =
arg_str0(
NULL,
"id",
"IDENTIFIER",
"Identifier for daemon instance. IDENTIFIER must not contain whitespace or special chars.");
struct arg_int *arg_interval = arg_int0(NULL, "interval", "MINUTES",
"Polling interval in minutes. Default is 10");
struct arg_lit
*arg_no_daemon =
arg_lit0(NULL, "no-daemon",
"Runs program as normal forground process (no forking). No logfile allowed");
struct arg_str *arg_log = arg_str0(NULL, "log", "FILENAME",
"Name of logfile. If not specified, a random name is chosen.");
struct arg_lit *arg_stats = arg_lit0(NULL, "stats",
"Print number of open tasks and exit");
//struct arg_str *arg_passphrase = arg_str0("p", "passphrase", "PASSPHRASE", "Passphrase for database encryption (max 63 characters)");
struct arg_int
*arg_verbose =
arg_int0(
"v",
"verbosity",
"0-6",
"Set verbosity level (=log level). The lower the value the more verbose the program behaves. Default is 3");
struct arg_int *arg_lFvtId = arg_int1("f", "featurevectorype_id",
"FEATUREVECTORTYPE_ID",
"Featurevectortype_id to use. Must be contained in the database.");
struct arg_str *arg_dbconf = arg_str0(NULL, "dbconf", "DATABASE-CONFIGURATION-FILE",
"Specify file that contains database connection details");
struct arg_lit *help = arg_lit0(NULL, "help", "print this help and exit");
struct arg_end *end = arg_end(20);
void* argtable[] = { arg_daemonID, arg_lFvtId,
arg_no_daemon, arg_interval, arg_dbconf, arg_verbose, arg_log,
arg_stats, help, end };
int nerrors;
/* verify the argtable[] entries were allocated sucessfully */
if (arg_nullcheck(argtable) != 0) {
/* NULL entries were detected, some allocations must have failed */
std::cerr << PROGNAME << ": insufficient memory" << std::endl;
exit(2);
}
// if no parameter is given: show help
if (argc > 1) {
// Parse the command line as defined by argtable[]
nerrors = arg_parse(argc, argv, argtable);
} else {
// no argument given
help->count = 1;
}
/* special case: '--help' takes precedence over error reporting */
if (help->count > 0) {
std::cout << "Usage: " << PROGNAME;
arg_print_syntax(stdout, argtable, "\n");
std::cout << std::endl;
arg_print_glossary(stdout, argtable, " %-27s %s\n");
std::cout << "" << std::endl;
#if defined(SMAFEDISTD_REAL_DAEMON)
std::cout
<< "This program works as a daemon, i.e., it is executed in the background and not attached to a shell."
<< std::endl;
std::cout << std::endl;
std::cout
<< "Currently, the preferred way to stop a running daemon is sending a SIGTERM signal to it. Then, the program will exit after finishing the current job (if any)."
<< std::endl;
std::cout << std::endl;
std::cout << "How to send a SIGTERM signal to a running instance:"
<< std::endl;
std::cout << " 1) ps aux | grep " << PROGNAME
<< " (this gives you the <PID>)" << std::endl;
std::cout << " 2) kill <PID>" << std::endl;
#else
std::cout << "This program works NOT as a daemon because this platform does not support forking (or, there has been a problem at compiling the application)." << std::endl;
#endif
exit(1);
}
if (nerrors == 0) {
// verbosity level
// must be on top
if (arg_verbose->count > 0) {
loglevel_requested = arg_verbose->ival[0];
// change loglevel
SmafeLogger::smlog->setLoglevel(loglevel_requested);
} else
loglevel_requested = SmafeLogger::DEFAULT_LOGLEVEL;
// identifier
if (arg_daemonID->count > 0) {
daemonId = std::string(arg_daemonID->sval[0]);
if (daemonId == SmafeStoreDB::STATUSOK || (0 == daemonId.find(SmafeStoreDB::STATUSFAILED))) {
SMAFELOG_FUNC(SMAFELOG_FATAL, "Identifier " + daemonId + " is illegal. It must not be '"+SmafeStoreDB::STATUSOK+"' and must not start with '"+SmafeStoreDB::STATUSFAILED+"'");
exit(2);
}
} else {
if (arg_stats->count == 0) {
// is actually mandatory, only for --stats and --list it is not.
SMAFELOG_FUNC(SMAFELOG_FATAL, "Please specify an identifier for this daemon (--id).");
exit(2);
}
}
// logfile
// uses daemonId
if (arg_log->count > 0) {
sLogfilename = std::string(arg_log->sval[0]);
} else {
sLogfilename = std::string(PROGNAME) + "." + stringify(my_getpid())
+ ".log";
}
// no-daemon
if (arg_no_daemon->count > 0) {
#if defined(SMAFEDISTD_REAL_DAEMON)
if (arg_log->count > 0) {
SMAFELOG_FUNC(SMAFELOG_FATAL, "--no-daemon and --log cannot be combined. If program runs as forground process output is written to stdout and stderr.");
exit(1);
} else {
// no daemon
SMAFELOG_FUNC(SMAFELOG_INFO, "Running in 'normal mode' (ie, not as daemon)");
bNoDaemon = true;
}
#else
SMAFELOG_FUNC(SMAFELOG_INFO, "Parameter --no-daemon is implied since this executable is compiled without daemon mode support.");
#endif
}
// stats
if (arg_stats->count > 0) {
bPrintStatsOnly = true;
#if defined(SMAFEDISTD_REAL_DAEMON)
SMAFELOG_FUNC(SMAFELOG_INFO, "Stats mode, so running in 'normal mode' (ie, not as daemon)");
bNoDaemon = true;
#endif
} else
bPrintStatsOnly = false;
// polling interval
if (arg_interval->count > 0)
pollInterval = arg_interval->ival[0];
if (pollInterval == 0) {
SMAFELOG_FUNC(SMAFELOG_WARNING, "Polling interval set to 0 which means that the daemon will perform busy waiting.");
}
if (pollInterval < 0) {
SMAFELOG_FUNC(SMAFELOG_INFO, "Daemon will stop after last finished task (since pollInterval < 0)");
} else {
SMAFELOG_FUNC(SMAFELOG_INFO, "polling interval=" + stringify(pollInterval));
}
// fvtid
if (arg_lFvtId->count > 0)
lFvtId = arg_lFvtId->ival[0];
else {
SMAFELOG_FUNC(SMAFELOG_FATAL, "Specify fvtype_id");
exit(2);
}
if (lFvtId < 0) {
SMAFELOG_FUNC(SMAFELOG_FATAL, "Featurevectortype_id cannot be < 0");
exit(2);
}
// ---- db stuff
// db options file
if (arg_dbconf->count > 0) {
SMAFELOG_FUNC(SMAFELOG_DEBUG, "Parsing db configuration file");
so->parseDbOpts(std::string(arg_dbconf->sval[0]));
}
/*
// Passphrase
if (arg_passphrase->count > 0) {
if (strlen(arg_passphrase->sval[0]) <= 63) {
strcpy(verysecretpassphrase, arg_passphrase->sval[0]);
SMAFELOG_FUNC(SMAFELOG_INFO, "Data encryption / decryption is enabled.");
} else {
SMAFELOG_FUNC(SMAFELOG_FATAL, "Passphrase too long. Max 63 characters.");
exit(2);
}
} else {
SMAFELOG_FUNC(SMAFELOG_INFO, "Data encryption / decryption is DISABLED!");
}
*/
// switch to logfile was here
} else {
arg_print_errors(stdout, end, PROGNAME);
std::cout << "--help gives usage information" << std::endl;
exit(1);
}
arg_freetable(argtable, sizeof(argtable) / sizeof(argtable[0]));
}
