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main.cfa @ bfa7bf0

Last change on this file since bfa7bf0 was 32d1383, checked in by Thierry Delisle <tdelisle@…>, 2 years ago
Committing http server when I know it works
Property mode set to `100644`
File size: 11.4 KB

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1	#define _GNU_SOURCE
2
3	#include <errno.h>
4	#include <signal.h>
5	#include <stdio.h>
6	#include <string.h>
7	#include <unistd.h>
8	extern "C" {
9	#include <sched.h>
10	#include <signal.h>
11	#include <sys/eventfd.h>
12	#include <sys/socket.h>
13	#include <netinet/in.h>
14	}
15
16	#include <fstream.hfa>
17	#include <kernel.hfa>
18	#include <locks.hfa>
19	#include <iofwd.hfa>
20	#include <stats.hfa>
21	#include <time.hfa>
22	#include <thread.hfa>
23
24	#include "filecache.hfa"
25	#include "options.hfa"
26	#include "socket.hfa"
27	#include "printer.hfa"
28	#include "worker.hfa"
29
30	extern void register_fixed_files( cluster &, int *, unsigned count );
31
32	Duration default_preemption() {
33	return 0;
34	}
35
36	//=============================================================================================
37	// Globals
38	//=============================================================================================
39	void ?{}( ServerCluster & this ) {
40	(this.self){ "Server Cluster", options.clopts.params };
41
42	cpu_set_t fullset;
43	CPU_ZERO(&fullset);
44	int ret = sched_getaffinity(getpid(), sizeof(fullset), &fullset);
45	if( ret != 0 ) abort \| "sched_getaffinity failed with" \| errno \| strerror( errno );
46	int cnt = CPU_COUNT(&fullset);
47
48	this.procs = alloc(options.clopts.nprocs);
49	for(i; options.clopts.nprocs) {
50	(this.procs[i]){ "Benchmark Processor", this.self };
51
52	// int c = 0;
53	// int n = 1 + (i % cnt);
54	// for(int j = 0; j < CPU_SETSIZE; j++) {
55	// if(CPU_ISSET(j, &fullset)) n--;
56	// if(n == 0) {
57	// c = j;
58	// break;
59	// }
60	// }
61	// cpu_set_t localset;
62	// CPU_ZERO(&localset);
63	// CPU_SET(c, &localset);
64	// ret = pthread_setaffinity_np(this.procs[i].kernel_thread, sizeof(localset), &localset);
65	// if( ret != 0 ) abort \| "sched_getaffinity failed with" \| ret \| strerror( ret );
66
67	#if !defined(__CFA_NO_STATISTICS__)
68	if( options.clopts.procstats ) {
69	print_stats_at_exit( *this.procs, this.self.print_stats );
70	}
71	if( options.clopts.viewhalts ) {
72	print_halts( *this.procs );
73	}
74	#endif
75	}
76
77	#if !defined(__CFA_NO_STATISTICS__)
78	print_stats_at_exit( this.self, CFA_STATS_READY_Q \| CFA_STATS_IO );
79	#endif
80
81	options.clopts.instance[options.clopts.cltr_cnt] = &this.self;
82	options.clopts.cltr_cnt++;
83	}
84
85	void ^?{}( ServerCluster & this ) {
86	for(i; options.clopts.nprocs) {
87	^(this.procs[i]){};
88	}
89	free(this.procs);
90
91	^(this.self){};
92	}
93
94	extern void init_protocol(void);
95	extern void deinit_protocol(void);
96
97	//=============================================================================================
98	// REUSEPORT
99	//=============================================================================================
100
101	size_t sockarr_size;
102	struct __attribute__((aligned(128))) Q {
103	mpsc_queue(PendingRead) q;
104	};
105
106	//=============================================================================================
107	// Termination
108	//=============================================================================================
109
110	int closefd;
111	void cleanstop(int) {
112	eventfd_t buffer = 1;
113	char * buffer_s = (char*)&buffer;
114	int ret = write(closefd, buffer_s, sizeof(buffer));
115	if(ret < 0) abort( "eventfd write error: (%d) %s\n", (int)errno, strerror(errno) );
116	return;
117	}
118
119	//=============================================================================================
120	// Main
121	//============================================================================================='
122	int main( int argc, char * argv[] ) {
123	int ret;
124	__sighandler_t s = 1p;
125	signal(SIGPIPE, s);
126
127	//===================
128	// Parse args
129	parse_options(argc, argv);
130
131	//===================
132	// Setup non-interactive termination
133	if(!options.interactive) {
134	closefd = eventfd(0, 0);
135	if(closefd < 0) abort( "eventfd error: (%d) %s\n", (int)errno, strerror(errno) );
136
137	sighandler_t prev = signal(SIGTERM, cleanstop);
138	intptr_t prev_workaround = (intptr_t) prev;
139	// can't use SIG_ERR it crashes the compiler
140	if(prev_workaround == -1) abort( "signal setup error: (%d) %s\n", (int)errno, strerror(errno) );
141
142	sout \| "Signal termination ready";
143	}
144
145	//===================
146	// Open Files
147	if( options.file_cache.path ) {
148	sout \| "Filling cache from" \| options.file_cache.path;
149	fill_cache( options.file_cache.path );
150	}
151
152	//===================
153	// Open Socket
154	sout \| getpid() \| ": Listening on port" \| options.socket.port;
155
156	struct sockaddr_in address;
157	int addrlen = prepaddr(address);
158
159	int server_fd;
160
161	//===================
162	// Run Server Cluster
163	{
164	int pipe_cnt = options.clopts.nworkers * 2;
165	// int pipe_cnt = 0;
166	int pipe_off;
167	int * fds;
168	[fds, pipe_off] = filefds( pipe_cnt );
169	for(i; 0 ~ pipe_cnt ~ 2) {
170	int ret = pipe(&fds[pipe_off + i]);
171	if( ret < 0 ) { abort( "pipe error: (%d) %s\n", (int)errno, strerror(errno) ); }
172	}
173
174	// if(options.file_cache.path && options.file_cache.fixed_fds) {
175	// register_fixed_files(cl, fds, pipe_off);
176	// }
177
178	{
179	// Stats printer makes a copy so this needs to persist longer than normal
180	connection ** conns;
181	AcceptWorker * aworkers = 0p;
182	ChannelWorker * cworkers = 0p;
183	Acceptor * acceptors = 0p;
184	Q * queues = 0p;
185	ServerCluster cl[options.clopts.nclusters];
186
187	if(options.stats) {
188	stats_thrd = alloc();
189	(*stats_thrd){ cl };
190	} else {
191	stats_thrd = 0p;
192	}
193
194	init_protocol();
195	{
196	int nacceptors = options.clopts.nprocs * options.clopts.nclusters;
197	conns = alloc(options.clopts.nworkers);
198	if(options.socket.reuseport) {
199	queues = alloc(nacceptors);
200	acceptors = alloc(nacceptors);
201	sout \| "Creating" \| nacceptors \| "Acceptors";
202	for(i; nacceptors) {
203	(acceptors[i]){ i % options.clopts.nclusters };
204	}
205	for(i; nacceptors) {
206	(queues[i]){};
207	{
208	acceptors[i].sockfd = listener(address, addrlen);
209	acceptors[i].addr = (struct sockaddr *)&address;
210	acceptors[i].addrlen = (socklen_t*)&addrlen;
211	acceptors[i].flags = 0;
212	acceptors[i].queue = &queues[i].q;
213	}
214	unpark( acceptors[i] );
215	}
216
217	cworkers = anew(options.clopts.nworkers);
218	for(i; options.clopts.nworkers) {
219	{
220	cworkers[i].conn.pipe[0] = fds[pipe_off + (i * 2) + 0];
221	cworkers[i].conn.pipe[1] = fds[pipe_off + (i * 2) + 1];
222	cworkers[i].queue = &queues[i % nacceptors].q;
223	conns[i] = &cworkers[i].conn;
224	}
225	unpark( cworkers[i] );
226	}
227	}
228	else {
229	server_fd = listener(address, addrlen);
230	aworkers = anew(options.clopts.nworkers);
231	for(i; options.clopts.nworkers) {
232	// if( options.file_cache.fixed_fds ) {
233	// workers[i].pipe[0] = pipe_off + (i * 2) + 0;
234	// workers[i].pipe[1] = pipe_off + (i * 2) + 1;
235	// }
236	// else
237	{
238	aworkers[i].conn.pipe[0] = fds[pipe_off + (i * 2) + 0];
239	aworkers[i].conn.pipe[1] = fds[pipe_off + (i * 2) + 1];
240	aworkers[i].sockfd = server_fd;
241	aworkers[i].addr = (struct sockaddr *)&address;
242	aworkers[i].addrlen = (socklen_t*)&addrlen;
243	aworkers[i].flags = 0;
244	conns[i] = &aworkers[i].conn;
245	}
246	unpark( aworkers[i] );
247	}
248	}
249	sout \| options.clopts.nworkers \| "workers started on" \| options.clopts.nprocs \| "processors /" \| options.clopts.nclusters \| "clusters";
250	for(i; options.clopts.nclusters) {
251	sout \| options.clopts.thrd_cnt[i] \| nonl;
252	}
253	sout \| nl;
254	{
255	if(options.interactive) {
256	char buffer[128];
257	for() {
258	int ret = cfa_read(0, buffer, 128, 0);
259	if(ret == 0) break;
260	if(ret < 0) abort( "main read error: (%d) %s\n", (int)errno, strerror(errno) );
261	sout \| "User wrote '" \| "" \| nonl;
262	write(sout, buffer, ret - 1);
263	sout \| "'";
264	}
265	}
266	else {
267	char buffer[sizeof(eventfd_t)];
268	int ret = cfa_read(closefd, buffer, sizeof(eventfd_t), 0);
269	if(ret < 0) abort( "main read error: (%d) %s\n", (int)errno, strerror(errno) );
270	}
271
272	sout \| "Shutdown received";
273	}
274
275	//===================
276	// Close Socket and join
277	if(options.socket.reuseport) {
278	sout \| "Notifying connections..." \| nonl; flush( sout );
279	for(i; nacceptors) {
280	acceptors[i].done = true;
281	}
282	for(i; options.clopts.nworkers) {
283	cworkers[i].done = true;
284	}
285	sout \| "done";
286
287	sout \| "Shutting down Socket..." \| nonl; flush( sout );
288	for(i; nacceptors) {
289	ret = shutdown( acceptors[i].sockfd, SHUT_RD );
290	if( ret < 0 ) {
291	abort( "shutdown1 error: (%d) %s\n", (int)errno, strerror(errno) );
292	}
293	}
294	sout \| "done";
295
296	sout \| "Closing Socket..." \| nonl; flush( sout );
297	for(i; nacceptors) {
298	ret = close( acceptors[i].sockfd );
299	if( ret < 0) {
300	abort( "close socket error: (%d) %s\n", (int)errno, strerror(errno) );
301	}
302	}
303	sout \| "done";
304
305	//===================
306	// Close Files
307	if( options.file_cache.path ) {
308	sout \| "Closing open files..." \| nonl; flush( sout );
309	close_cache();
310	sout \| "done";
311	}
312
313	sout \| "Stopping accept threads..." \| nonl; flush( sout );
314	for(i; nacceptors) {
315	join(acceptors[i]);
316	}
317	sout \| "done";
318
319	sout \| "Draining worker queues..." \| nonl; flush( sout );
320	for(i; nacceptors) {
321	PendingRead * p = 0p;
322	while(p = pop(queues[i].q)) {
323	fulfil(p->f, -ECONNRESET);
324	}
325	}
326	sout \| "done";
327
328	sout \| "Stopping worker threads..." \| nonl; flush( sout );
329	for(i; options.clopts.nworkers) {
330	for(j; 2) {
331	ret = close(cworkers[i].conn.pipe[j]);
332	if(ret < 0) abort( "close pipe %d error: (%d) %s\n", j, (int)errno, strerror(errno) );
333	}
334	join(cworkers[i]);
335	}
336	}
337	else {
338	sout \| "Notifying connections..." \| nonl; flush( sout );
339	for(i; options.clopts.nworkers) {
340	aworkers[i].done = true;
341	}
342	sout \| "done";
343
344	sout \| "Shutting down Socket..." \| nonl; flush( sout );
345	ret = shutdown( server_fd, SHUT_RD );
346	if( ret < 0 ) {
347	abort( "shutdown2 error: (%d) %s\n", (int)errno, strerror(errno) );
348	}
349	sout \| "done";
350
351	sout \| "Closing Socket..." \| nonl; flush( sout );
352	ret = close( server_fd );
353	if(ret < 0) {
354	abort( "close socket error: (%d) %s\n", (int)errno, strerror(errno) );
355	}
356	sout \| "done";
357
358	//===================
359	// Close Files
360	if( options.file_cache.path ) {
361	sout \| "Closing open files..." \| nonl; flush( sout );
362	close_cache();
363	sout \| "done";
364	}
365
366	sout \| "Stopping connection threads..." \| nonl; flush( sout );
367	for(i; options.clopts.nworkers) {
368	for(j; 2) {
369	ret = close(aworkers[i].conn.pipe[j]);
370	if(ret < 0) abort( "close pipe %d error: (%d) %s\n", j, (int)errno, strerror(errno) );
371	}
372	join(aworkers[i]);
373	}
374	}
375	}
376	sout \| "done";
377
378	sout \| "Stopping protocol threads..." \| nonl; flush( sout );
379	deinit_protocol();
380	sout \| "done";
381
382	sout \| "Stopping printer threads..." \| nonl; flush( sout );
383	if(stats_thrd) {
384	notify_one(stats_thrd->var);
385	}
386	delete(stats_thrd);
387	sout \| "done";
388
389	// Now that the stats printer is stopped, we can reclaim this
390	adelete(aworkers);
391	adelete(cworkers);
392	adelete(acceptors);
393	adelete(queues);
394	free(conns);
395
396	sout \| "Stopping processors/clusters..." \| nonl; flush( sout );
397	}
398	sout \| "done";
399
400	free(fds);
401
402	sout \| "Stopping processors..." \| nonl; flush( sout );
403	}
404	sout \| "done";
405	}
406
407	const size_t zipf_sizes[] = { 102, 204, 307, 409, 512, 614, 716, 819, 921, 1024, 2048, 3072, 4096, 5120, 6144, 7168, 8192, 9216, 10240, 20480, 30720, 40960, 51200, 61440, 71680, 81920, 92160, 102400, 204800, 307200, 409600, 512000, 614400, 716800, 819200, 921600 };
408	static_assert(zipf_cnts == sizeof(zipf_sizes) / sizeof(zipf_sizes[0]));

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