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Merge "Break up clock_getcpuclockid tests."

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Elliott Hughes 2017-11-30 16:31:35 +00:00 committed by Gerrit Code Review
commit 9fd5626507
1 changed files with 12 additions and 11 deletions
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23
tests/time_test.cpp
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@ -654,31 +654,32 @@ TEST(time, clock) {
ASSERT_LT(t1 - t0, CLOCKS_PER_SEC / 1000);
}
pid_t GetInvalidPid() {
FILE* fp = fopen("/proc/sys/kernel/pid_max", "r");
static pid_t GetInvalidPid() {
std::unique_ptr<FILE, decltype(&fclose)> fp{fopen("/proc/sys/kernel/pid_max", "r"), fclose};
long pid_max;
fscanf(fp, "%ld", &pid_max);
pid_t invalid_pid = static_cast<pid_t>(pid_max + 1);
fclose(fp);
return invalid_pid;
fscanf(fp.get(), "%ld", &pid_max);
return static_cast<pid_t>(pid_max + 1);
}
TEST(time, clock_getcpuclockid) {
// For current process.
TEST(time, clock_getcpuclockid_current) {
clockid_t clockid;
ASSERT_EQ(0, clock_getcpuclockid(getpid(), &clockid));
timespec ts;
ASSERT_EQ(0, clock_gettime(clockid, &ts));
}
// For parent process.
TEST(time, clock_getcpuclockid_parent) {
clockid_t clockid;
ASSERT_EQ(0, clock_getcpuclockid(getppid(), &clockid));
timespec ts;
ASSERT_EQ(0, clock_gettime(clockid, &ts));
}
// For invalid process.
TEST(time, clock_getcpuclockid_ESRCH) {
// We can't use -1 for invalid pid here, because clock_getcpuclockid() can't detect it.
errno = 0;
// If this fails, your kernel needs commit e1b6b6ce to be backported.
clockid_t clockid;
ASSERT_EQ(ESRCH, clock_getcpuclockid(GetInvalidPid(), &clockid)) << "\n"
<< "Please ensure that the following kernel patches or their replacements have been applied:\n"
<< "* https://git.kernel.org/pub/scm/linux/kernel/git/torvalds/linux.git/"