int main (int argc, char ** argv)
{
int nsend = 5 , i;
PAL_HANDLE handles[nsend];
if (argc == 1) /* parent */
{
pal_printf("Parent: Executing the program\n");
const char *args[3] = { "HandleSend", "child", NULL };
char * data = "Hello World";
char content[20];
char uri[80];
PAL_HANDLE child;
int bytes;
pal_printf("Parent: Creating handles\n");
// Sending pipe handle
handles[0] = DkStreamOpen("pipe.srv:012", PAL_ACCESS_RDWR,
0, PAL_CREATE_TRY, 0);
if (!handles[0]) {
pal_printf("Parent: DkStreamOpen for pipe failed\n");
goto out;
}
// Sending pipe handle
handles[1] = DkStreamOpen("udp:127.0.0.1:8000", PAL_ACCESS_RDWR,
0, PAL_CREATE_TRY, 0);
if (!handles[1]) {
pal_printf("Parent: DkStreamOpen for socket failed\n");
goto out;
}
for (i = 2 ; i < nsend; i++) {
snprintf(uri, 80, "file:test_file_%d", i - 2);
handles[i] = DkStreamOpen(uri, PAL_ACCESS_RDWR, 0600,
PAL_CREATE_TRY, 0);
if (!handles[i]) {
pal_printf("Parent: DkStreamOpen failed\n");
goto out;
}
DkStreamSetLength(handles[i], 0);
}
for (i = 0 ; i < nsend ; i++) {
/* do some write */
snprintf(content, sizeof(content), "%s%d", data, i);
bytes = DkStreamWrite(handles[i], 0, sizeof(content), content,
NULL);
if (!bytes) {
pal_printf("Parent: DKStreamWrite failed\n");
goto out;
}
DkStreamFlush(handles[i]);
}
pal_printf("Parent: Forking child\n");
child = DkProcessCreate ("file:HandleSend", args);
if (!child) {
pal_printf("Parent: Failed creating process\n");
DkProcessExit(1);
}
for (i = 0 ; i < nsend ; i++) {
pal_printf("Parent: Sending Handle %d\n", i);
if (!DkSendHandle(child, handles[i])) {
pal_printf("Send handle failed\n");
goto out;
}
DkObjectClose(handles[i]);
}
pal_printf("Parent: Finished execution\n");
DkObjectClose(child);
}
else /* child */
{
PAL_HANDLE parent = pal_control.parent_process;
for (i = 0 ; i < nsend ; i++) {
pal_printf("Child: Receiving Handle %d\n", i);
handles[i] = DkReceiveHandle(parent);
if (!handles[i]) {
pal_printf("Child: Failed receiving handle\n");
DkProcessExit(1);
}
}
pal_printf("Child: Reading the handles\n");
for (i = 0 ; i < nsend ; i++) {
/* do some read */
pal_printf("Child: Handle %d Type ", i);
char data[20];
switch(PAL_GET_TYPE(handles[i])) {
case pal_type_file:
if ((DkStreamRead(handles[i], 0, 20, data, NULL, 0)))
pal_printf("File Data: %s\n", data);
else
pal_printf("Couldn't read\n");
break;
case pal_type_pipesrv:
pal_printf("Pipe\n");
break;
case pal_type_udp:
pal_printf("Udp\n");
break;
default:
pal_printf("Unknown\n");
}
DkObjectClose(handles[i]);
}
pal_printf("Child: Finished execution\n\n");
DkObjectClose(parent);
}
out:
for (i = 0 ; i < nsend ; i++)
DkObjectClose(handles[i]);
return 0;
}
int main (int argc, char ** argv)
{
PAL_HANDLE handles[3];
if (argc == 2 && !memcmp(argv[1], "Child", 6)) {
for (int i = 0 ; i < 3 ; i++) {
handles[i] = DkReceiveHandle(pal_control.parent_process);
if (handles[i])
pal_printf("Receive Handle OK\n");
}
char buffer[20];
for (int i = 0 ; i < 3 ; i++) {
if (!handles[i])
continue;
memset(buffer, 0, 20);
switch(PAL_GET_TYPE(handles[i])) {
case pal_type_pipesrv: {
PAL_HANDLE pipe = DkStreamWaitForClient(handles[i]);
if (pipe) {
if (DkStreamRead(pipe, 0, 20, buffer, NULL, 0))
pal_printf("Receive Pipe Handle: %s\n", buffer);
DkObjectClose(pipe);
}
break;
}
case pal_type_udpsrv: {
char uri[20];
if ((DkStreamRead(handles[i], 0, 20, buffer, &uri, 20)))
pal_printf("Receive Socket Handle: %s\n", buffer);
break;
}
case pal_type_file:
if (DkStreamRead(handles[i], 0, 20, buffer, NULL, 0))
pal_printf("Receive File Handle: %s\n", buffer);
break;
default:
break;
}
DkObjectClose(handles[i]);
}
} else {
const char *args[3] = { "SendHandle", "Child", NULL };
PAL_HANDLE child = DkProcessCreate("file:SendHandle", 0, args);
if (child) {
// Sending pipe handle
handles[0] = DkStreamOpen("pipe.srv:1", PAL_ACCESS_RDWR,
0, PAL_CREAT_TRY, 0);
if (handles[0]) {
pal_printf("Send Handle OK\n");
if (DkSendHandle(child, handles[0])) {
DkObjectClose(handles[0]);
PAL_HANDLE pipe = DkStreamOpen("pipe:1", PAL_ACCESS_RDWR,
0, 0, 0);
if (pipe) {
DkStreamWrite(pipe, 0, 20, "Hello World", NULL);
DkObjectClose(pipe);
}
} else {
DkObjectClose(handles[0]);
}
}
// Sending udp handle
handles[1] = DkStreamOpen("udp.srv:127.0.0.1:8000", PAL_ACCESS_RDWR,
0, PAL_CREAT_TRY, 0);
if (handles[1]) {
pal_printf("Send Handle OK\n");
if (DkSendHandle(child, handles[1])) {
DkObjectClose(handles[1]);
PAL_HANDLE socket = DkStreamOpen("udp:127.0.0.1:8000",
PAL_ACCESS_RDWR, 0, 0, 0);
if (socket) {
DkStreamWrite(socket, 0, 20, "Hello World", NULL);
DkObjectClose(socket);
}
} else {
DkObjectClose(handles[1]);
}
}
handles[2] = DkStreamOpen("file:to_send.tmp", PAL_ACCESS_RDWR,
0600, PAL_CREAT_TRY, 0);
if (handles[2]) {
pal_printf("Send Handle OK\n");
DkStreamWrite(handles[2], 0, 20, "Hello World", NULL);
DkStreamSetLength(handles[2], 4096);
DkSendHandle(child, handles[2]);
DkObjectClose(handles[2]);
}
}
DkObjectClose(child);
}
return 0;
}