Heap::Page *Heap::WorkPage(int k) // get a new empty workpage
{
LLOG("AllocK - next work not available " << k << " empty: " << (void *)empty[k]);
Page *page = empty[k]; // hot empty page of the same klass
empty[k] = NULL;
if(!page) { // try to reacquire pages freed remotely
LLOG("AllocK - trying FreeRemote");
FreeRemote();
if(work[k]->freelist) { // partially free page found
LLOG("AllocK - work available after FreeRemote " << k);
return work[k];
}
page = empty[k]; // hot empty page
empty[k] = NULL;
}
if(!page)
for(int i = 0; i < NKLASS; i++) // Try hot local page of different klass
if(empty[i]) {
LLOG("AllocK - free page available for reformatting " << k);
page = empty[i];
empty[i] = NULL;
page->Format(k);
break;
}
if(!page) { // Attempt to find page in global storage of free pages
Mutex::Lock __(mutex);
aux.FreeRemoteRaw();
if(aux.work[k]->next != aux.work[k]) { // Try page of the same klass first
page = aux.work[k]->next;
page->Unlink();
page->heap = this;
LLOG("AllocK - adopting aux page " << k << " page: " << (void *)page << ", free " << (void *)page->freelist);
}
if(!page && aux.empty[k]) { // Try hot empty page of the same klass
page = aux.empty[k];
aux.empty[k] = page->next;
LLOG("AllocK - empty aux page available of the same format " << k << " page: " << (void *)page << ", free " << (void *)page->freelist);
}
if(!page)
for(int i = 0; i < NKLASS; i++) // Finally try to to find hot page of different klass
if(aux.empty[i]) {
page = aux.empty[i];
aux.empty[i] = page->next;
page->Format(k);
LLOG("AllocK - empty aux page available for reformatting " << k << " page: " << (void *)page << ", free " << (void *)page->freelist);
break;
}
if(!page) { // Not free memory was found, ask system for the new page
page = (Page *)AllocRaw4KB(Ksz(k));
LLOG("AllocK - allocated new system page " << (void *)page << " " << k);
page->Format(k);
}
page->heap = this;
}
page->Link(work[k]);
ASSERT(page->klass == k);
return page;
}
void FreeClient(proxy_client*c)
{
/*add................*/
if(c==NULL) return;
LogDebug("free client %d",c->fd);
aeDeleteFileEvent(el,c->fd,AE_READABLE);
aeDeleteFileEvent(el,c->fd,AE_WRITABLE);
close(c->fd);
FreeRemote(c->remote);
FreeBufferList(c->blist);
free(c);
/*add................*/
}
