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/*
*
* Copyright 2019 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.
*
*/
#include <spawn.h>
#include <sstream>
#include <string>
#include <thread>
#include <vector>
#include <gtest/gtest.h>
#include "absl/time/time.h"
#include <grpc/grpc.h>
#include <grpc/support/log.h>
#include "src/core/lib/gprpp/sync.h"
#include "src/core/lib/iomgr/closure.h"
#include "src/core/lib/iomgr/error.h"
#include "src/core/lib/iomgr/exec_ctx.h"
#include "src/core/lib/iomgr/timer.h"
#include "src/core/lib/iomgr/timer_manager.h"
#include "test/core/util/test_config.h"
extern char** environ;
#ifdef GPR_ANDROID
// Android doesn't have posix_spawn. Use std::system instead
void run_cmd(const char* cmd) { std::system(cmd); }
#else
void run_cmd(const char* cmd) {
pid_t pid;
const char* argv[] = {const_cast<const char*>("sh"),
const_cast<const char*>("-c"), cmd, nullptr};
int status;
status = posix_spawn(&pid, const_cast<const char*>("/bin/sh"), nullptr,
nullptr, const_cast<char**>(argv), environ);
if (status == 0) {
if (waitpid(pid, &status, 0) == -1) {
perror("waitpid");
}
}
}
#endif
class TimeJumpTest : public ::testing::TestWithParam<std::string> {
protected:
void SetUp() override {
// Skip test if slowdown factor > 1
if (grpc_test_slowdown_factor() != 1) {
GTEST_SKIP();
} else {
grpc_init();
}
}
void TearDown() override {
// Skip test if slowdown factor > 1
if (grpc_test_slowdown_factor() == 1) {
run_cmd("sudo sntp -sS pool.ntp.org");
grpc_shutdown();
}
}
const int kWaitTimeMs = 1500;
};
std::vector<std::string> CreateTestScenarios() {
return {"-1M", "+1M", "-1H", "+1H", "-1d", "+1d", "-1y", "+1y"};
}
INSTANTIATE_TEST_SUITE_P(TimeJump, TimeJumpTest,
::testing::ValuesIn(CreateTestScenarios()));
TEST_P(TimeJumpTest, TimerRunning) {
grpc_core::ExecCtx exec_ctx;
grpc_timer timer;
grpc_timer_init(&timer,
grpc_core::Timestamp::Now() + grpc_core::Duration::Seconds(3),
GRPC_CLOSURE_CREATE(
[](void*, grpc_error_handle error) {
GPR_ASSERT(error == absl::CancelledError());
},
nullptr, grpc_schedule_on_exec_ctx));
gpr_sleep_until(grpc_timeout_milliseconds_to_deadline(100));
std::ostringstream cmd;
cmd << "sudo date `date -v" << GetParam() << " \"+%m%d%H%M%y\"`";
run_cmd(cmd.str().c_str());
gpr_sleep_until(grpc_timeout_milliseconds_to_deadline(kWaitTimeMs));
// We expect 1 wakeup/sec when there are not timer expiries
int64_t wakeups = grpc_timer_manager_get_wakeups_testonly();
gpr_log(GPR_DEBUG, "wakeups: %" PRId64 "", wakeups);
GPR_ASSERT(wakeups <= 3);
grpc_timer_cancel(&timer);
}
TEST_P(TimeJumpTest, TimedWait) {
grpc_core::CondVar cond;
grpc_core::Mutex mu;
{
grpc_core::MutexLock lock(&mu);
std::thread thd = std::thread([]() {
gpr_sleep_until(grpc_timeout_milliseconds_to_deadline(100));
std::ostringstream cmd;
cmd << "sudo date `date -v" << GetParam() << " \"+%m%d%H%M%y\"`";
run_cmd(cmd.str().c_str());
});
gpr_timespec before = gpr_now(GPR_CLOCK_MONOTONIC);
bool timedout = cond.WaitWithTimeout(&mu, absl::Milliseconds(kWaitTimeMs));
gpr_timespec after = gpr_now(GPR_CLOCK_MONOTONIC);
int32_t elapsed_ms = gpr_time_to_millis(gpr_time_sub(after, before));
gpr_log(GPR_DEBUG, "After wait, timedout = %d elapsed_ms = %d", timedout,
elapsed_ms);
GPR_ASSERT(1 == timedout);
GPR_ASSERT(1 ==
gpr_time_similar(gpr_time_sub(after, before),
gpr_time_from_millis(kWaitTimeMs, GPR_TIMESPAN),
gpr_time_from_millis(50, GPR_TIMESPAN)));
thd.join();
}
// We expect 1 wakeup/sec when there are not timer expiries
int64_t wakeups = grpc_timer_manager_get_wakeups_testonly();
gpr_log(GPR_DEBUG, "wakeups: %" PRId64 "", wakeups);
GPR_ASSERT(wakeups <= 3);
}
int main(int argc, char** argv) {
grpc::testing::TestEnvironment env(&argc, argv);
::testing::InitGoogleTest(&argc, argv);
return RUN_ALL_TESTS();
}
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