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/*
* ipc.c: A plugin for the Video Disk Recorder
*
* See the README file for copyright information and how to reach the author.
*
* $Id$
*/
#include <errno.h>
#include <signal.h>
#include <sys/resource.h>
#include <sys/wait.h>
#include <unistd.h>
#include <stdlib.h>
#include <vdr/tools.h>
#include "ipc.h"
// --- cConsSimplePipe -------------------------------------------------------
cConsSimplePipe::cConsSimplePipe() {
_pipe[0] = -1;
_pipe[1] = -1;
}
cConsSimplePipe::~cConsSimplePipe() {
Close();
}
bool cConsSimplePipe::Open() {
if (IsOpen())
return true;
return (pipe(_pipe) == 0);
}
void cConsSimplePipe::Close() {
for (int i = 0; i < 2; ++i) {
if (_pipe[i] >= 0) {
close(_pipe[i] );
_pipe[i] = -1;
}
}
}
// --- cConsWaitableList -----------------------------------------------------
cConsWaitableList::cConsWaitableList()
: _list(NULL),
_listCount(0)
{
FD_ZERO(&_wait);
}
cConsWaitableList::~cConsWaitableList() {
free(_list);
}
void cConsWaitableList::Add(IConsWaitable* pObj) {
for (int i = 0; i < _listCount; ++i) {
if (_list[i] == pObj)
return;
}
_list = (IConsWaitable**) realloc((void*) _list, sizeof(IConsWaitable*) * ++_listCount);
_list[_listCount - 1] = pObj;
}
void cConsWaitableList::Remove(IConsWaitable* pObj) {
for (int i = 0; i < _listCount; ++i) {
if (_list[i] == pObj) {
// Object found
for (int j = i + 1; j < _listCount; ++j) {
_list[j - 1] = _list[j];
}
_list = (IConsWaitable**) realloc((void*) _list, sizeof(IConsWaitable*) * --_listCount);
return;
}
}
// object not found
}
bool cConsWaitableList::Wait(int timeoutMs) {
int maxHandle = 0;
FD_ZERO(&_wait);
for (int i = 0; i < _listCount; ++i) {
int handle = _list[i]->SignalToWaitFor();
if (handle >= 0) {
FD_SET(handle, &_wait);
if (handle > maxHandle)
maxHandle = handle;
}
}
if (timeoutMs >= 0) {
timeval timeout;
timeout.tv_sec = timeoutMs / 1000;
timeout.tv_usec = (timeoutMs % 1000) * 1000;
return (select(maxHandle + 1, &_wait, NULL, NULL, &timeout) > 0);
} else {
return (select(maxHandle + 1, &_wait, NULL, NULL, NULL) > 0);
}
}
// --- cConsSignal -----------------------------------------------------------
cConsSignal::cConsSignal() {
Open();
}
void cConsSignal::Signal() {
// If the pipe is empty then put a char into the pipe
// so that the receiver will be signalled.
if (! IsSignalled())
write(getWriter(), " ", 1);
}
void cConsSignal::Reset() {
// remove the pending char from the pipe
char buf;
if (IsSignalled())
read(getReader(), &buf, 1);
}
bool cConsSignal::IsSignalled() {
cPoller poll(getReader());
return poll.Poll(0);
}
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