void scanmain(void)
{
struct portinfo *pi;
int ports = 0, i;
int childpid;
pi = shm_init(sizeof(*pi)*(MAXPORT+2));
pi[MAXPORT+1].active = 0; /* hold the average RTT */
if (pi == NULL) {
fprintf(stderr, "Unable to create the shared memory");
shm_close(pi);
exit(1);
}
for (i = 0; i <= MAXPORT; i++) {
pi[i].active = 0;
pi[i].retry = opt_scan_probes;
}
if (parse_ports(pi, opt_scanports)) {
fprintf(stderr, "Ports syntax error for scan mode\n");
shm_close(pi);
exit(1);
}
for (i = 0; i <= MAXPORT; i++) {
if (!pi[i].active)
pi[i].retry = 0;
}
for (i = 0; i <= MAXPORT; i++)
ports += pi[i].active;
fprintf(stderr, "%d ports to scan, use -V to see all the replies\n", ports);
fprintf(stderr, "+----+-----------+---------+---+-----+-----+-----+\n");
fprintf(stderr, "|port| serv name | flags |ttl| id | win | len |\n");
fprintf(stderr, "+----+-----------+---------+---+-----+-----+-----+\n");
/* We are ready to fork, the input and output parts
* are separated processes */
if ((childpid = fork()) == -1) {
perror("fork");
shm_close(pi);
exit(1);
}
/* The parent is the receiver, the child the sender.
* it's almost the same but this way is simpler
* to make it working in pipe with other commands like grep. */
if (childpid) { /* parent */
Signal(SIGCHLD, do_exit);
Signal(SIGINT, do_exit);
Signal(SIGTERM, do_exit);
receiver(pi, childpid);
} else { /* child */
Signal(SIGINT, do_exit);
Signal(SIGTERM, do_exit);
sender(pi);
}
/* UNREACHED */
}
int
sys_shm_close(void)
{
int key;
argint(0,&key);
return shm_close(key);
}
void
mail_close(struct mail *m)
{
mail_free(m);
if (m->base != NULL) {
SHM_DEREGISTER(&m->shm);
shm_close(&m->shm);
}
}
uintmax_t _vfs_is_symlink(uintptr_t shmid)
{
size_t pathlen = popup_get_message(NULL, 0);
char path[pathlen];
popup_get_message(path, pathlen);
void *dst = shm_open(shmid, VMM_UW);
bool is_link = service_is_symlink(path, dst);
shm_close(shmid, dst, true);
return is_link;
}
/* Destroy shm file. */
void
shm_destroy(struct shm *shm)
{
char *path;
if (*shm->name == '\0')
return;
shm_close(shm);
if ((path = shm_path(shm)) == NULL)
fatal("unlink failed");
if (unlink(path) != 0)
fatal("unlink failed");
*shm->name = '\0';
}
int main(int argc, char *argv[])
{
int pid;
int i=0;
struct shm_cnt *counter;
pid=fork();
sleep(1);
//shm_open: first process will create the page, the second will just attach to the same page
//we get the virtual address of the page returned into counter
//which we can now use but will be shared between the two processes
shm_open(1,(char **)&counter);
// printf(1,"%s returned successfully from shm_open with counter %x\n", pid? "Child": "Parent", counter);
for(i = 0; i < 10000; i++)
{
uacquire(&(counter->lock));
counter->cnt++;
urelease(&(counter->lock));
//print something because we are curious and to give a chance to switch process
if(i%1000 == 0)
printf(1,"Counter in %s is %d at address %x\n",pid? "Parent" : "Child", counter->cnt, counter);
}
if(pid)
{
printf(1,"Counter in parent is %d\n",counter->cnt);
wait();
} else
printf(1,"Counter in child is %d\n\n",counter->cnt);
//shm_close: first process will just detach, next one will free up the shm_table entry (but for now not the page)
shm_close(1);
exit();
return 0;
}
HOOK_API DWORD CALLBACK DhcpControlHook(
__in DWORD dwControlCode,
__in LPVOID lpReserved
)
{
switch(dwControlCode) {
case DHCP_CONTROL_START :
LOG("DHCP Service started!\n");
lock_init(&_shm_init_lock,NULL);
acl = acl_init();
if(!acl) {
DEBUG("acl_init failed.");
}
break;
case DHCP_CONTROL_STOP :
LOG("DHCP Service stoped!\n");
if(outfile) {
fclose(outfile);
}
if(shm) {
shm_close(shm);
}
lock_destory(&_shm_init_lock);
break;
case DHCP_CONTROL_CONTINUE:
LOG("DHCP Service contunied!\n");
if(outfile) {
fflush(outfile);
}
break;
case DHCP_CONTROL_PAUSE:
LOG("DHCP Service paused!\n");
break;
}
return 0;
}
void main(void) {
unsigned int pid;
unsigned int status;
shared_object *ptr;
char *local_str1 = "Hello from the parent\n";
char *local_str2 = "Hello from the child\n";
status = fork(&pid);
if (status != SUCCESS) {
/* failure */
puts("shm_test: fork: ");
putx(status);
puts("\n");
exit();
} else if (pid == 0) {
/* child */
msleep(2500);
puts("shm_test: child: good morning\n");
status = shm_open("test", (void**)&ptr);
if (status != SUCCESS) {
puts("shm_test: shm_open: ");
putx(status);
puts("\n");
exit();
}
putx(ptr->x); puts(" "); putx(ptr->y); puts(" "); putx(ptr->z); puts("\n");
puts("shared str1: ");
puts(ptr->str1);
ptr->x++; ptr->y++; ptr->z++;
memcpy(ptr->str2, local_str2, strlen(local_str2) + 1);
status = shm_close("test");
ptr->x++;
exit();
} else {
/* parent */
puts("shm_test: parent: creating shm region \"test\"\n");
status = shm_create("test", 0x4000, SHM_WRITE, (void**)&ptr);
if (status != SUCCESS) {
puts("shm_test: shm_create: ");
putx(status);
puts("\n");
exit();
}
ptr->x = 0x10;
ptr->y = 0x20;
ptr->z = 0x30;
memcpy(ptr->str1, local_str1, strlen(local_str1) + 1);
msleep(5000);
puts("shm_test: parent: good morning\n");
putx(ptr->x); puts(" "); putx(ptr->y); puts(" "); putx(ptr->z); puts("\n");
puts("shared str2: ");
puts(ptr->str2);
exit();
}
}
main (void)
{
pid_t pid_gui;
pid_t pid_sim;
pid_t pid_pport;
int simChid;
int kill_gui;
int kill_sim;
int kill_pport;
int s_return;
//---thread paramters--------------//
pthread_attr_t attr;
pthread_t timerThreadID;
pthread_t keyboardThreadID;
pthread_t blockIDThreadID;
do
{
printf("\n=========================================================\n");
printf("Please Selet the Operating Mode:\n");
printf("1: Basic Orientation Mode for Block: 0-10).\n");
printf("2: Rotated Orientation Mode for Block:0-6). (alaph version)\n");
printf("===========================================================\n");
flushall();
scanf ("%c",&programMode);
printf("You have selected: Mode %c.\n\n",programMode);
flushall();
if((programMode != '1' )&&(programMode !='2'))
{
printf("Invalid Selection, Please Enter!\n");
flushall();
}
}
while(programMode != '1'&&programMode !='2');
// ----------------Share Memory----------------------------------------
shMem=shm_open("shared_memory", OFLAGS, 0777);
if (shMem == -1)
{
printf("shared_memory failed to open...\n");
flushall();
}
else
{
if (ftruncate (shMem,SIZE) == -1)
{
printf ("Failed to set size for -- shmem -- \n");
flushall();
}
else
{
//mapping a shared memory location
memLocation = mmap (0, SIZE, PROT, MFLAGS, shMem, 0);
if (memLocation == MAP_FAILED)
{
printf (" Failed to map to shared memory...\n");
flushall();
}
}
}
// ---------------Semorphore-------------------------------------
// semorphore for shared memory
sem = sem_open ("shared_sem", O_CREAT, S_IRWXG | S_IRWXO | S_IRWXU, 0);
if (sem == (sem_t *)(-1))
{
printf ("User: Memory Semaphore failed to open....\n");
flushall();
}
else
{
sem_post(sem);
}
// -----------------------channel creation---------------------------
// Create a channels for the simulator and Gui
// The ChannelCreate function returns the channel ID
ChannelCreate(0);
ChannelCreate(0);
//ChannelCreate(0);//for pport
simChid = 1;
sleep(1);
// Spawing a process for the GUI and Simulator
pid_gui = spawnl(P_NOWAIT, "/usr/local/bin/gui_g", "gui_g", NULL);
pid_sim = spawnl(P_NOWAIT, "/usr/local/bin/newGUIPport_g", "sim", NULL);
pid_pport = spawnl(P_NOWAIT, "/usr/local/bin/testPport_g", "pport",NULL);
sleep(1);
//The Gui process automatically connect to the channel
//Thus we only need to attach the simulator process to the created channel
coidsim = ConnectAttach(0,pid_sim,simChid,0,0);
// Display error message if connection failed
if (coidsim == -1)
{
printf("coidsim error\n");
flushall();
exit(EXIT_FAILURE);
}
coidpport = ConnectAttach(0,pid_pport,simChid,0,0);
// Display error message if connection failed
if (coidpport == -1)
{
printf("coidpport error\n");
flushall();
exit(EXIT_FAILURE);
}
// --------------------------timer code----------------------------------
// Create a channel for sending a pulse to myself when timer expires
timerChid = ChannelCreate(_NTO_CHF_UNBLOCK);
if(timerChid == -1)
{
printf("timer Channel create failed\n");
flushall();
}
timerCoid = ConnectAttach ( 0, getpid ( ), timerChid, 0, 0);
if(timerCoid == -1 )
{
printf ("Channel attach failed!\n");
flushall();
perror ( NULL );
exit ( EXIT_FAILURE);
}
// Set up pulse event for delivery when the first timer expires; pulse code = 8, pulse value = 0;
SIGEV_PULSE_INIT (&timerEvent, timerCoid, SIGEV_PULSE_PRIO_INHERIT, 8, 0);
// Create Timer
if (timer_create (CLOCK_REALTIME, &timerEvent, &timerid) == -1)
{
printf ( "Failed to create a timer for pulse delivery\n");
flushall();
perror (NULL);
exit ( EXIT_FAILURE);
}
// Setup one time timer for 2 second
timer.it_value.tv_sec = 2;
timer.it_value.tv_nsec = 0;
timer.it_interval.tv_sec = 0;
timer.it_interval.tv_nsec = 0;
// --------------------------timer2 code----------------------------------
// Create a channel for sending a pulse to myself when timer expires
timerChid2 = ChannelCreate(_NTO_CHF_UNBLOCK);
if(timerChid2 == -1)
{
printf("timer Channel create failed\n");
flushall();
}
timerCoid2 = ConnectAttach ( 0, getpid ( ), timerChid2, 0, 0);
if(timerCoid2 == -1 )
{
printf ("Channel attach failed!\n");
flushall();
perror ( NULL );
exit ( EXIT_FAILURE);
}
// Set up pulse event for delivery when the first timer expires; pulse code = 8, pulse value = 0;
SIGEV_PULSE_INIT (&timerEvent2, timerCoid2, SIGEV_PULSE_PRIO_INHERIT, 8, 0);
// Create Timer
if (timer_create (CLOCK_REALTIME, &timerEvent2, &timerid2) == -1)
{
printf ( "Failed to create a timer for pulse delivery\n");
flushall();
perror (NULL);
exit ( EXIT_FAILURE);
}
//-------------------timer monitor thread--------------------
pthread_attr_init(&attr);
pthread_attr_setinheritsched(&attr, PTHREAD_EXPLICIT_SCHED);
pthread_create(&timerThreadID,&attr,timer_thread,NULL);
if(timerThreadID == -1)
{
printf("Fail to create timer thread!");
flushall();
}
else
{
printf("The timer thread ID is %i \n",timerThreadID);
flushall();
}
pthread_create(&timerThreadID,&attr,timer2_thread,NULL);
if(timerThreadID == -1)
{
printf("Fail to create timer thread2!");
flushall();
}
else
{
printf("The timer thread2 ID is %i \n",timerThreadID);
flushall();
}
//
//----start the block Identification thread-----------------
// pFile = fopen("Blocks.txt","w+");
pthread_create(&blockIDThreadID,&attr,blockID,NULL);
if(blockIDThreadID == -1)
{
printf("Fail to create block indeptification thread!");
flushall();
}
else
{
printf("The BlockID's thread ID is %i \n",blockIDThreadID);
flushall();
}
delay(10);
//---------------------keyboard thread------------------------
pthread_create(&keyboardThreadID,&attr,keyboard_input,NULL);
if(keyboardThreadID == -1)
{
printf("Fail to create keyboard input!");
flushall();
}
else
{
printf("The keyboard_input ID is %i \n",timerThreadID);
flushall();
}
delay(10);
//----------------GUI Monitor Thread---------------------
pthread_create(NULL,&attr,GUI_thread,NULL);
delay(10);
// --------------------SIM pulse Handler Loop Thread----------
pthread_create(NULL,&attr,Handlerloop_thread,NULL);
delay(10);
// --------------------SIM Monitor Thread---------------------
pthread_create(NULL,&attr,SIM_thread,NULL);
delay(10);
// --------------------Auto mode thread-----------------------
pthread_create(NULL,&attr,auto_thread,NULL);
delay(10);
// --------------------others---------------------------------
// call mainLoop()
mainLoop();
// sleep for 10sec
printf("Sleep the program for 10 seconds\n");
flushall;
sleep(10);
// start release system resourse
printf("Clean up and release system resourse\n");
flushall;
// Kill the existing processes
kill_gui = kill(pid_gui, 0);
kill_sim = kill(pid_sim, 0);
kill_pport = kill(pid_pport, 0);
if (kill_gui == -1)
{
printf("GUI Kill failed\n");
flushall();
}
if (kill_sim == -1)
{
printf("SIM Kill failed\n");
flushall();
}
if (kill_pport == -1)
{
printf("PPort Kill failed\n");
flushall();
}
// Close and unlink Semorphore
sem_close(sem);
s_return = sem_unlink("/dev/sem/home/quad6/workspace/Project_S1/shared_sem");
// Display error messae if semorphonre unlink is failed
if (s_return == -1)
{
printf("a: %s\n", strerror( errno ));
flushall();
}
// Close, unmap, and unlink shared memory
shm_close(shMem);
munmap(shmLocation,SIZE);
shm_unlink("shared_memory");
// Detach the connections and destroy the channels
ConnectDetach(coidGui);
ConnectDetach(coidsim);
ConnectDetach(coidpport);
ChannelDestroy(guiChid);
ChannelDestroy(simChid);
// fclose(pFile);
}
int shm_mutex_destroy(shm_mutex_t *pshmmutex)
{
return shm_close(pshmmutex);
}
