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/*
*
* Copyright 2016, Google Inc.
* All rights reserved.
*
* Redistribution and use in source and binary forms, with or without
* modification, are permitted provided that the following conditions are
* met:
*
* * Redistributions of source code must retain the above copyright
* notice, this list of conditions and the following disclaimer.
* * Redistributions in binary form must reproduce the above
* copyright notice, this list of conditions and the following disclaimer
* in the documentation and/or other materials provided with the
* distribution.
* * Neither the name of Google Inc. nor the names of its
* contributors may be used to endorse or promote products derived from
* this software without specific prior written permission.
*
* THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
* "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
* LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR
* A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT
* OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL,
* SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT
* LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
* DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
* THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
* (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE
* OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
*
*/
#include <memory.h>
#include <stdio.h>
#include <grpc/grpc.h>
#include <grpc/support/alloc.h>
#include <grpc/support/log.h>
#include <grpc/support/string_util.h>
#include <grpc/support/thd.h>
#include "src/core/lib/iomgr/exec_ctx.h"
#include "src/core/lib/iomgr/iomgr.h"
#include "src/core/lib/iomgr/sockaddr_utils.h"
#include "src/core/lib/iomgr/tcp_server.h"
#include "test/core/util/port.h"
#include "test/core/util/test_config.h"
#define NUM_THREADS 100
#define NUM_OUTER_LOOPS 10
#define NUM_INNER_LOOPS 10
#define DELAY_MILLIS 10
#define POLL_MILLIS 3000
static void *tag(int n) { return (void *)(uintptr_t)n; }
static int detag(void *p) { return (int)(uintptr_t)p; }
void create_loop_destroy(void *addr) {
for (int i = 0; i < NUM_OUTER_LOOPS; ++i) {
grpc_completion_queue *cq = grpc_completion_queue_create(NULL);
grpc_channel *chan = grpc_insecure_channel_create((char *)addr, NULL, NULL);
for (int j = 0; j < NUM_INNER_LOOPS; ++j) {
gpr_timespec later_time = GRPC_TIMEOUT_MILLIS_TO_DEADLINE(DELAY_MILLIS);
grpc_connectivity_state state =
grpc_channel_check_connectivity_state(chan, 1);
grpc_channel_watch_connectivity_state(chan, state, later_time, cq, NULL);
gpr_timespec poll_time = GRPC_TIMEOUT_MILLIS_TO_DEADLINE(POLL_MILLIS);
GPR_ASSERT(grpc_completion_queue_next(cq, poll_time, NULL).type ==
GRPC_OP_COMPLETE);
}
grpc_channel_destroy(chan);
grpc_completion_queue_destroy(cq);
}
}
struct server_thread_args {
char *addr;
grpc_server *server;
grpc_completion_queue *cq;
grpc_pollset *pollset;
gpr_mu *mu;
gpr_event ready;
gpr_atm stop;
};
void server_thread(void *vargs) {
struct server_thread_args *args = (struct server_thread_args *)vargs;
grpc_event ev;
gpr_timespec deadline = gpr_inf_future(GPR_CLOCK_MONOTONIC);
ev = grpc_completion_queue_next(args->cq, deadline, NULL);
GPR_ASSERT(ev.type == GRPC_OP_COMPLETE);
GPR_ASSERT(detag(ev.tag) == 0xd1e);
}
static void on_connect(grpc_exec_ctx *exec_ctx, void *vargs, grpc_endpoint *tcp,
grpc_pollset *accepting_pollset,
grpc_tcp_server_acceptor *acceptor) {
struct server_thread_args *args = (struct server_thread_args *)vargs;
(void)acceptor;
grpc_endpoint_shutdown(exec_ctx, tcp);
grpc_endpoint_destroy(exec_ctx, tcp);
grpc_pollset_kick(args->pollset, NULL);
}
void bad_server_thread(void *vargs) {
struct server_thread_args *args = (struct server_thread_args *)vargs;
grpc_exec_ctx exec_ctx = GRPC_EXEC_CTX_INIT;
struct sockaddr_storage addr;
socklen_t addr_len = sizeof(addr);
int port;
grpc_tcp_server *s = grpc_tcp_server_create(NULL);
memset(&addr, 0, sizeof(addr));
addr.ss_family = AF_INET;
port = grpc_tcp_server_add_port(s, (struct sockaddr *)&addr, addr_len);
GPR_ASSERT(port > 0);
gpr_asprintf(&args->addr, "localhost:%d", port);
grpc_tcp_server_start(&exec_ctx, s, &args->pollset, 1, on_connect, args);
gpr_event_set(&args->ready, (void *)1);
gpr_mu_lock(args->mu);
while (gpr_atm_acq_load(&args->stop) == 0) {
gpr_timespec now = gpr_now(GPR_CLOCK_MONOTONIC);
gpr_timespec deadline =
gpr_time_add(now, gpr_time_from_millis(100, GPR_TIMESPAN));
grpc_pollset_worker *worker = NULL;
grpc_pollset_work(&exec_ctx, args->pollset, &worker, now, deadline);
gpr_mu_unlock(args->mu);
grpc_exec_ctx_finish(&exec_ctx);
gpr_mu_lock(args->mu);
}
gpr_mu_unlock(args->mu);
grpc_tcp_server_unref(&exec_ctx, s);
grpc_exec_ctx_finish(&exec_ctx);
gpr_free(args->addr);
}
static void done_pollset_shutdown(grpc_exec_ctx *exec_ctx, void *pollset,
bool success) {
grpc_pollset_destroy(pollset);
gpr_free(pollset);
}
int main(int argc, char **argv) {
struct server_thread_args args;
memset(&args, 0, sizeof(args));
grpc_test_init(argc, argv);
grpc_init();
gpr_thd_id threads[NUM_THREADS];
gpr_thd_id server;
char *localhost = gpr_strdup("localhost:54321");
gpr_thd_options options = gpr_thd_options_default();
gpr_thd_options_set_joinable(&options);
/* First round, no server */
gpr_log(GPR_DEBUG, "Wave 1");
for (size_t i = 0; i < NUM_THREADS; ++i) {
gpr_thd_new(&threads[i], create_loop_destroy, localhost, &options);
}
for (size_t i = 0; i < NUM_THREADS; ++i) {
gpr_thd_join(threads[i]);
}
gpr_free(localhost);
/* Second round, actual grpc server */
gpr_log(GPR_DEBUG, "Wave 2");
int port = grpc_pick_unused_port_or_die();
gpr_asprintf(&args.addr, "localhost:%d", port);
args.server = grpc_server_create(NULL, NULL);
grpc_server_add_insecure_http2_port(args.server, args.addr);
args.cq = grpc_completion_queue_create(NULL);
grpc_server_register_completion_queue(args.server, args.cq, NULL);
grpc_server_start(args.server);
gpr_thd_new(&server, server_thread, &args, &options);
for (size_t i = 0; i < NUM_THREADS; ++i) {
gpr_thd_new(&threads[i], create_loop_destroy, args.addr, &options);
}
for (size_t i = 0; i < NUM_THREADS; ++i) {
gpr_thd_join(threads[i]);
}
grpc_server_shutdown_and_notify(args.server, args.cq, tag(0xd1e));
gpr_thd_join(server);
grpc_server_destroy(args.server);
grpc_completion_queue_destroy(args.cq);
gpr_free(args.addr);
/* Third round, bogus tcp server */
gpr_log(GPR_DEBUG, "Wave 3");
args.pollset = gpr_malloc(grpc_pollset_size());
grpc_pollset_init(args.pollset, &args.mu);
gpr_event_init(&args.ready);
gpr_thd_new(&server, bad_server_thread, &args, &options);
gpr_event_wait(&args.ready, gpr_inf_future(GPR_CLOCK_MONOTONIC));
for (size_t i = 0; i < NUM_THREADS; ++i) {
gpr_thd_new(&threads[i], create_loop_destroy, args.addr, &options);
}
for (size_t i = 0; i < NUM_THREADS; ++i) {
gpr_thd_join(threads[i]);
}
gpr_atm_rel_store(&args.stop, 1);
gpr_thd_join(server);
grpc_exec_ctx exec_ctx = GRPC_EXEC_CTX_INIT;
grpc_pollset_shutdown(
&exec_ctx, args.pollset,
grpc_closure_create(done_pollset_shutdown, args.pollset));
grpc_exec_ctx_finish(&exec_ctx);
grpc_shutdown();
return 0;
}
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