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 #ifdef __FreeBSD__
28 #include <sys/wait.h>
29 #endif
30
31 #include <grpc/support/log.h>
32
33 #include "src/core/lib/gprpp/crash.h"
34 #include "src/core/lib/gprpp/env.h"
35 #include "test/core/util/port.h"
36 #include "test/cpp/util/subprocess.h"
37
38 using grpc::SubProcess;
39
40 constexpr auto kNumWorkers = 2;
41
42 static SubProcess* g_driver;
43 static SubProcess* g_workers[kNumWorkers];
44
45 template <class T>
as_string(const T & val)46 std::string as_string(const T& val) {
47 std::ostringstream out;
48 out << val;
49 return out.str();
50 }
51
sighandler(int)52 static void sighandler(int /*sig*/) {
53 const int errno_saved = errno;
54 if (g_driver != nullptr) g_driver->Interrupt();
55 for (int i = 0; i < kNumWorkers; ++i) {
56 if (g_workers[i]) g_workers[i]->Interrupt();
57 }
58 errno = errno_saved;
59 }
60
register_sighandler()61 static void register_sighandler() {
62 struct sigaction act;
63 memset(&act, 0, sizeof(act));
64 act.sa_handler = sighandler;
65
66 sigaction(SIGINT, &act, nullptr);
67 sigaction(SIGTERM, &act, nullptr);
68 }
69
LogStatus(int status,const char * label)70 static void LogStatus(int status, const char* label) {
71 if (WIFEXITED(status)) {
72 gpr_log(GPR_INFO, "%s: subprocess exited with status %d", label,
73 WEXITSTATUS(status));
74 } else if (WIFSIGNALED(status)) {
75 gpr_log(GPR_INFO, "%s: subprocess terminated with signal %d", label,
76 WTERMSIG(status));
77 } else {
78 gpr_log(GPR_INFO, "%s: unknown subprocess status: %d", label, status);
79 }
80 }
81
main(int argc,char ** argv)82 int main(int argc, char** argv) {
83 register_sighandler();
84
85 std::string my_bin = argv[0];
86 std::string bin_dir = my_bin.substr(0, my_bin.rfind('/'));
87
88 std::ostringstream env;
89 bool first = true;
90
91 for (int i = 0; i < kNumWorkers; i++) {
92 const auto driver_port = grpc_pick_unused_port_or_die();
93 // ServerPort can be used or not later depending on the type of worker
94 // but we like to issue all ports required here to avoid port conflict.
95 const auto server_port = grpc_pick_unused_port_or_die();
96 std::vector<std::string> args = {bin_dir + "/qps_worker", "-driver_port",
97 as_string(driver_port), "-server_port",
98 as_string(server_port)};
99 g_workers[i] = new SubProcess(args);
100 if (!first) env << ",";
101 env << "localhost:" << driver_port;
102 first = false;
103 }
104
105 grpc_core::SetEnv("QPS_WORKERS", env.str().c_str());
106 std::vector<std::string> args = {bin_dir + "/qps_json_driver"};
107 for (int i = 1; i < argc; i++) {
108 args.push_back(argv[i]);
109 }
110
111 g_driver = new SubProcess(args);
112 const int driver_join_status = g_driver->Join();
113 if (driver_join_status != 0) {
114 LogStatus(driver_join_status, "driver");
115 }
116 for (int i = 0; i < kNumWorkers; ++i) {
117 if (g_workers[i]) g_workers[i]->Interrupt();
118 }
119
120 for (int i = 0; i < kNumWorkers; ++i) {
121 if (g_workers[i]) {
122 const int worker_status = g_workers[i]->Join();
123 if (worker_status != 0) {
124 LogStatus(worker_status, "worker");
125 }
126 }
127 }
128
129 delete g_driver;
130
131 g_driver = nullptr;
132 for (int i = 0; i < kNumWorkers; ++i) {
133 if (g_workers[i] != nullptr) {
134 delete g_workers[i];
135 }
136 }
137 GPR_ASSERT(driver_join_status == 0);
138 }
139