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/*
*
* Copyright 2017 gRPC authors.
*
* Licensed under the Apache License, Version 2.0 (the "License");
* you may not use this file except in compliance with the License.
* You may obtain a copy of the License at
*
* http://www.apache.org/licenses/LICENSE-2.0
*
* Unless required by applicable law or agreed to in writing, software
* distributed under the License is distributed on an "AS IS" BASIS,
* WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
* See the License for the specific language governing permissions and
* limitations under the License.
*
*/
/* When individual tests run in an isolated runtime environment (e.g. each test
* runs in a separate container) the framework takes a round-robin pick of a
* port within certain range. There is no need to recycle ports.
*/
#include <grpc/support/atm.h>
#include <grpc/support/log.h>
#include <grpc/support/time.h>
#include <stdlib.h>
#include "src/core/lib/iomgr/port.h"
#include "test/core/util/test_config.h"
#if defined(GRPC_PORT_ISOLATED_RUNTIME)
#include "test/core/util/port.h"
#define MIN_PORT 1025
#define MAX_PORT 32766
static int get_random_port_offset() {
srand(gpr_now(GPR_CLOCK_REALTIME).tv_nsec);
double rnd = static_cast<double>(rand()) /
(static_cast<double>(RAND_MAX) + 1.0); // values from [0,1)
return static_cast<int>(rnd * (MAX_PORT - MIN_PORT + 1));
}
static int s_initial_offset = get_random_port_offset();
static gpr_atm s_pick_counter = 0;
int grpc_pick_unused_port_or_die(void) {
int orig_counter_val =
static_cast<int>(gpr_atm_full_fetch_add(&s_pick_counter, 1));
GPR_ASSERT(orig_counter_val < (MAX_PORT - MIN_PORT + 1));
return MIN_PORT +
(s_initial_offset + orig_counter_val) % (MAX_PORT - MIN_PORT + 1);
}
void grpc_recycle_unused_port(int port) { (void)port; }
#endif /* GRPC_PORT_ISOLATED_RUNTIME */
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