inline void ArpCache::probeFor(folly::IPAddressV4 ip) const {
auto vlan = getSw()->getState()->getVlans()->getVlanIf(getVlanID());
if (!vlan) {
VLOG(2) << "Vlan " << getVlanID() << " not found. Skip sending probe";
return;
}
ArpHandler::sendArpRequest(getSw(), vlan, ip);
}
// Trivial wrapper to avoid complexities of renderer & alpha channels
void Neill_SDL_SetDrawColour(Uint8 r, Uint8 g, Uint8 b)
{
SDL_Simplewin sw = getSw(NULL);
SDL_SetRenderDrawColor(sw->renderer, r, g, b, SDL_ALPHA_OPAQUE);
}
void drawLine(int xSource, int ySource, int xDest, int yDest) {
SDL_Simplewin sw = getSw(NULL);
SDL_SetRenderDrawColor(sw->renderer, 0, 0, 0, SDL_ALPHA_OPAQUE);
SDL_RenderDrawLine(sw->renderer,xSource,ySource,xDest,yDest);
//SDL_Delay(20);
endFrame();
}
// Gobble all events & ignore most
int Neill_SDL_Events() {
SDL_Simplewin sw = getSw(NULL);
SDL_Event event;
while(SDL_PollEvent(&event)) {
switch (event.type){
case SDL_QUIT:
case SDL_MOUSEBUTTONDOWN:
case SDL_KEYDOWN:
sw->finished = 1;
}
}
return sw->finished;
}
// Set up a simple (WIDTH, HEIGHT) window.
// Attempt to hide the renderer etc. from user.
void Neill_SDL_Init()
{
SDL_Simplewin sw = malloc(sizeof(*sw));
getSw(sw);
if (SDL_Init(SDL_INIT_VIDEO) != 0) {
fprintf(stderr, "\nUnable to initialize SDL: %s\n", SDL_GetError());
SDL_Quit();
exit(1);
}
sw->finished = 0;
sw->win= SDL_CreateWindow("SDL Window",
SDL_WINDOWPOS_UNDEFINED,
SDL_WINDOWPOS_UNDEFINED,
WWIDTH, WHEIGHT,
SDL_WINDOW_SHOWN);
if(sw->win == NULL){
fprintf(stderr, "\nUnable to initialize SDL Window: %s\n", SDL_GetError());
SDL_Quit();
exit(1);
}
sw->renderer = SDL_CreateRenderer(sw->win, -1, 0);
if(sw->renderer == NULL){
fprintf(stderr, "\nUnable to initialize SDL Renderer: %s\n", SDL_GetError());
SDL_Quit();
exit(1);
}
// Set screen to black
Neill_SDL_SetDrawColour(255, 255, 255);
SDL_RenderClear(sw->renderer);
SDL_RenderPresent(sw->renderer);
}
int checkFinished() {
return getSw(NULL)->finished;
}
void endFrame() {
SDL_Simplewin sw = getSw(NULL);
SDL_RenderPresent(sw->renderer);
SDL_UpdateWindowSurface(sw->win);
Neill_SDL_Events();
}
