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84 lines
2.4 KiB
84 lines
2.4 KiB
#pragma once
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#include <assert.h>
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#include <errno.h>
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#include "client_socket.h"
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#include "panic.h"
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#include "runtime.h"
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#include "sandbox_functions.h"
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#include "sandbox_set_as_error.h"
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#include "sandbox_set_as_runnable.h"
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#include "sandbox_state.h"
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#include "sandbox_types.h"
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#include "software_interrupt.h"
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#include "worker_thread.h"
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/**
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* Run all outstanding events in the local thread's epoll loop
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*/
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static inline void
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worker_thread_execute_epoll_loop(void)
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{
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assert(!software_interrupt_is_enabled());
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while (true) {
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struct epoll_event epoll_events[RUNTIME_MAX_EPOLL_EVENTS];
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int descriptor_count = epoll_wait(worker_thread_epoll_file_descriptor, epoll_events,
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RUNTIME_MAX_EPOLL_EVENTS, 0);
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if (descriptor_count < 0) {
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if (errno == EINTR) continue;
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panic_err();
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}
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if (descriptor_count == 0) break;
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for (int i = 0; i < descriptor_count; i++) {
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if (epoll_events[i].events & (EPOLLIN | EPOLLOUT)) {
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/* Re-add to runqueue if blocked */
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struct sandbox *sandbox = (struct sandbox *)epoll_events[i].data.ptr;
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assert(sandbox);
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if (sandbox->state == SANDBOX_BLOCKED) {
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sandbox_set_as_runnable(sandbox, SANDBOX_BLOCKED);
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local_runqueue_add(sandbox);
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}
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} else if (epoll_events[i].events & (EPOLLERR | EPOLLHUP)) {
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/* Mystery: This seems to never fire. Why? Issue #130 */
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/* Close socket and set as error on socket error or unexpected client hangup */
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struct sandbox *sandbox = (struct sandbox *)epoll_events[i].data.ptr;
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int error = 0;
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socklen_t errlen = sizeof(error);
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getsockopt(epoll_events[i].data.fd, SOL_SOCKET, SO_ERROR, (void *)&error, &errlen);
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if (error > 0) {
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debuglog("Socket error: %s", strerror(error));
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} else if (epoll_events[i].events & EPOLLHUP) {
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debuglog("Client Hungup");
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} else {
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debuglog("Unknown Socket error");
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}
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switch (sandbox->state) {
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case SANDBOX_SET_AS_RETURNED:
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case SANDBOX_RETURNED:
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case SANDBOX_SET_AS_COMPLETE:
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case SANDBOX_COMPLETE:
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case SANDBOX_SET_AS_ERROR:
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case SANDBOX_ERROR:
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panic("Expected to have closed socket");
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default:
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client_socket_send(sandbox->client_socket_descriptor, 503);
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sandbox_close_http(sandbox);
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sandbox_set_as_error(sandbox, sandbox->state);
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}
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} else {
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panic("Mystery epoll event!\n");
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};
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}
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}
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}
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