1 /*
2 *
3 * Copyright 2015-2016 gRPC authors.
4 *
5 * Licensed under the Apache License, Version 2.0 (the "License");
6 * you may not use this file except in compliance with the License.
7 * You may obtain a copy of the License at
8 *
9 * http://www.apache.org/licenses/LICENSE-2.0
10 *
11 * Unless required by applicable law or agreed to in writing, software
12 * distributed under the License is distributed on an "AS IS" BASIS,
13 * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
14 * See the License for the specific language governing permissions and
15 * limitations under the License.
16 *
17 */
18
19 #include <signal.h>
20 #include <string.h>
21
22 #include <memory>
23 #include <mutex>
24 #include <sstream>
25 #include <string>
26
27 #include <grpc/support/log.h>
28
29 #include "src/core/lib/gpr/env.h"
30 #include "test/core/util/port.h"
31 #include "test/cpp/util/subprocess.h"
32
33 using grpc::SubProcess;
34
35 constexpr auto kNumWorkers = 2;
36
37 static SubProcess* g_driver;
38 static SubProcess* g_workers[kNumWorkers];
39
40 template <class T>
as_string(const T & val)41 std::string as_string(const T& val) {
42 std::ostringstream out;
43 out << val;
44 return out.str();
45 }
46
sighandler(int sig)47 static void sighandler(int sig) {
48 const int errno_saved = errno;
49 if (g_driver != nullptr) g_driver->Interrupt();
50 for (int i = 0; i < kNumWorkers; ++i) {
51 if (g_workers[i]) g_workers[i]->Interrupt();
52 }
53 errno = errno_saved;
54 }
55
register_sighandler()56 static void register_sighandler() {
57 struct sigaction act;
58 memset(&act, 0, sizeof(act));
59 act.sa_handler = sighandler;
60
61 sigaction(SIGINT, &act, nullptr);
62 sigaction(SIGTERM, &act, nullptr);
63 }
64
LogStatus(int status,const char * label)65 static void LogStatus(int status, const char* label) {
66 if (WIFEXITED(status)) {
67 gpr_log(GPR_INFO, "%s: subprocess exited with status %d", label,
68 WEXITSTATUS(status));
69 } else if (WIFSIGNALED(status)) {
70 gpr_log(GPR_INFO, "%s: subprocess terminated with signal %d", label,
71 WTERMSIG(status));
72 } else {
73 gpr_log(GPR_INFO, "%s: unknown subprocess status: %d", label, status);
74 }
75 }
76
main(int argc,char ** argv)77 int main(int argc, char** argv) {
78 register_sighandler();
79
80 std::string my_bin = argv[0];
81 std::string bin_dir = my_bin.substr(0, my_bin.rfind('/'));
82
83 std::ostringstream env;
84 bool first = true;
85
86 for (int i = 0; i < kNumWorkers; i++) {
87 const auto port = grpc_pick_unused_port_or_die();
88 std::vector<std::string> args = {bin_dir + "/qps_worker", "-driver_port",
89 as_string(port)};
90 g_workers[i] = new SubProcess(args);
91 if (!first) env << ",";
92 env << "localhost:" << port;
93 first = false;
94 }
95
96 gpr_setenv("QPS_WORKERS", env.str().c_str());
97 std::vector<std::string> args = {bin_dir + "/qps_json_driver"};
98 for (int i = 1; i < argc; i++) {
99 args.push_back(argv[i]);
100 }
101
102 g_driver = new SubProcess(args);
103 const int driver_join_status = g_driver->Join();
104 if (driver_join_status != 0) {
105 LogStatus(driver_join_status, "driver");
106 }
107 for (int i = 0; i < kNumWorkers; ++i) {
108 if (g_workers[i]) g_workers[i]->Interrupt();
109 }
110
111 for (int i = 0; i < kNumWorkers; ++i) {
112 if (g_workers[i]) {
113 const int worker_status = g_workers[i]->Join();
114 if (worker_status != 0) {
115 LogStatus(worker_status, "worker");
116 }
117 }
118 }
119
120 if (g_driver != nullptr) {
121 delete g_driver;
122 }
123 g_driver = nullptr;
124 for (int i = 0; i < kNumWorkers; ++i) {
125 if (g_workers[i] != nullptr) {
126 delete g_workers[i];
127 }
128 }
129 GPR_ASSERT(driver_join_status == 0);
130 }
131