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aosp12/system/libbase/logging_test.cpp

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/*
* Copyright (C) 2015 The Android Open Source Project
*
* 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 "android-base/logging.h"
#include <libgen.h>
#if defined(_WIN32)
#include <signal.h>
#endif
#include <memory>
#include <regex>
#include <string>
#include <thread>
#include "android-base/file.h"
#include "android-base/scopeguard.h"
#include "android-base/stringprintf.h"
#include "android-base/test_utils.h"
#include <gtest/gtest.h>
#ifdef __ANDROID__
#define HOST_TEST(suite, name) TEST(suite, DISABLED_ ## name)
#else
#define HOST_TEST(suite, name) TEST(suite, name)
#endif
#if defined(_WIN32)
static void ExitSignalAbortHandler(int) {
_exit(3);
}
#endif
static void SuppressAbortUI() {
#if defined(_WIN32)
// We really just want to call _set_abort_behavior(0, _CALL_REPORTFAULT) to
// suppress the Windows Error Reporting dialog box, but that API is not
// available in the OS-supplied C Runtime, msvcrt.dll, that we currently
// use (it is available in the Visual Studio C runtime).
//
// Instead, we setup a SIGABRT handler, which is called in abort() right
// before calling Windows Error Reporting. In the handler, we exit the
// process just like abort() does.
ASSERT_NE(SIG_ERR, signal(SIGABRT, ExitSignalAbortHandler));
#endif
}
TEST(logging, CHECK) {
ASSERT_DEATH({SuppressAbortUI(); CHECK(false);}, "Check failed: false ");
CHECK(true);
ASSERT_DEATH({SuppressAbortUI(); CHECK_EQ(0, 1);}, "Check failed: 0 == 1 ");
CHECK_EQ(0, 0);
std::unique_ptr<int> p;
ASSERT_DEATH(CHECK_NE(p, nullptr), "Check failed");
CHECK_EQ(p, nullptr);
CHECK_EQ(p, p);
const char* kText = "Some text";
ASSERT_DEATH(CHECK_NE(kText, kText), "Check failed");
ASSERT_DEATH(CHECK_EQ(kText, nullptr), "Check failed.*null");
CHECK_EQ(kText, kText);
ASSERT_DEATH({SuppressAbortUI(); CHECK_STREQ("foo", "bar");},
R"(Check failed: "foo" == "bar")");
CHECK_STREQ("foo", "foo");
// Test whether CHECK() and CHECK_STREQ() have a dangling if with no else.
bool flag = false;
if (true)
CHECK(true);
else
flag = true;
EXPECT_FALSE(flag) << "CHECK macro probably has a dangling if with no else";
flag = false;
if (true)
CHECK_STREQ("foo", "foo");
else
flag = true;
EXPECT_FALSE(flag) << "CHECK_STREQ probably has a dangling if with no else";
}
TEST(logging, DCHECK) {
if (android::base::kEnableDChecks) {
ASSERT_DEATH({SuppressAbortUI(); DCHECK(false);}, "DCheck failed: false ");
}
DCHECK(true);
if (android::base::kEnableDChecks) {
ASSERT_DEATH({SuppressAbortUI(); DCHECK_EQ(0, 1);}, "DCheck failed: 0 == 1 ");
}
DCHECK_EQ(0, 0);
std::unique_ptr<int> p;
if (android::base::kEnableDChecks) {
ASSERT_DEATH(DCHECK_NE(p, nullptr), "DCheck failed");
}
DCHECK_EQ(p, nullptr);
DCHECK_EQ(p, p);
if (android::base::kEnableDChecks) {
ASSERT_DEATH({SuppressAbortUI(); DCHECK_STREQ("foo", "bar");},
R"(DCheck failed: "foo" == "bar")");
}
DCHECK_STREQ("foo", "foo");
// No testing whether we have a dangling else, possibly. That's inherent to the if (constexpr)
// setup we intentionally chose to force type-checks of debug code even in release builds (so
// we don't get more bit-rot).
}
#define CHECK_WOULD_LOG_DISABLED(severity) \
static_assert(android::base::severity < android::base::FATAL, "Bad input"); \
for (size_t i = static_cast<size_t>(android::base::severity) + 1; \
i <= static_cast<size_t>(android::base::FATAL); \
++i) { \
{ \
android::base::ScopedLogSeverity sls2(static_cast<android::base::LogSeverity>(i)); \
EXPECT_FALSE(WOULD_LOG(severity)) << i; \
} \
{ \
android::base::ScopedLogSeverity sls2(static_cast<android::base::LogSeverity>(i)); \
EXPECT_FALSE(WOULD_LOG(::android::base::severity)) << i; \
} \
} \
#define CHECK_WOULD_LOG_ENABLED(severity) \
for (size_t i = static_cast<size_t>(android::base::VERBOSE); \
i <= static_cast<size_t>(android::base::severity); \
++i) { \
{ \
android::base::ScopedLogSeverity sls2(static_cast<android::base::LogSeverity>(i)); \
EXPECT_TRUE(WOULD_LOG(severity)) << i; \
} \
{ \
android::base::ScopedLogSeverity sls2(static_cast<android::base::LogSeverity>(i)); \
EXPECT_TRUE(WOULD_LOG(::android::base::severity)) << i; \
} \
} \
TEST(logging, WOULD_LOG_FATAL) {
CHECK_WOULD_LOG_ENABLED(FATAL);
}
TEST(logging, WOULD_LOG_FATAL_WITHOUT_ABORT_enabled) {
CHECK_WOULD_LOG_ENABLED(FATAL_WITHOUT_ABORT);
}
TEST(logging, WOULD_LOG_ERROR_disabled) {
CHECK_WOULD_LOG_DISABLED(ERROR);
}
TEST(logging, WOULD_LOG_ERROR_enabled) {
CHECK_WOULD_LOG_ENABLED(ERROR);
}
TEST(logging, WOULD_LOG_WARNING_disabled) {
CHECK_WOULD_LOG_DISABLED(WARNING);
}
TEST(logging, WOULD_LOG_WARNING_enabled) {
CHECK_WOULD_LOG_ENABLED(WARNING);
}
TEST(logging, WOULD_LOG_INFO_disabled) {
CHECK_WOULD_LOG_DISABLED(INFO);
}
TEST(logging, WOULD_LOG_INFO_enabled) {
CHECK_WOULD_LOG_ENABLED(INFO);
}
TEST(logging, WOULD_LOG_DEBUG_disabled) {
CHECK_WOULD_LOG_DISABLED(DEBUG);
}
TEST(logging, WOULD_LOG_DEBUG_enabled) {
CHECK_WOULD_LOG_ENABLED(DEBUG);
}
TEST(logging, WOULD_LOG_VERBOSE_disabled) {
CHECK_WOULD_LOG_DISABLED(VERBOSE);
}
TEST(logging, WOULD_LOG_VERBOSE_enabled) {
CHECK_WOULD_LOG_ENABLED(VERBOSE);
}
#undef CHECK_WOULD_LOG_DISABLED
#undef CHECK_WOULD_LOG_ENABLED
#if !defined(_WIN32)
static std::string make_log_pattern(android::base::LogSeverity severity,
const char* message) {
static const char log_characters[] = "VDIWEFF";
static_assert(arraysize(log_characters) - 1 == android::base::FATAL + 1,
"Mismatch in size of log_characters and values in LogSeverity");
char log_char = log_characters[severity];
std::string holder(__FILE__);
return android::base::StringPrintf(
"%c \\d+-\\d+ \\d+:\\d+:\\d+ \\s*\\d+ \\s*\\d+ %s:\\d+] %s",
log_char, basename(&holder[0]), message);
}
#endif
static void CheckMessage(const std::string& output, android::base::LogSeverity severity,
const char* expected, const char* expected_tag = nullptr) {
// We can't usefully check the output of any of these on Windows because we
// don't have std::regex, but we can at least make sure we printed at least as
// many characters are in the log message.
ASSERT_GT(output.length(), strlen(expected));
ASSERT_NE(nullptr, strstr(output.c_str(), expected)) << output;
if (expected_tag != nullptr) {
ASSERT_NE(nullptr, strstr(output.c_str(), expected_tag)) << output;
}
#if !defined(_WIN32)
std::string regex_str;
if (expected_tag != nullptr) {
regex_str.append(expected_tag);
regex_str.append(" ");
}
regex_str.append(make_log_pattern(severity, expected));
std::regex message_regex(regex_str);
ASSERT_TRUE(std::regex_search(output, message_regex)) << output;
#endif
}
static void CheckMessage(CapturedStderr& cap, android::base::LogSeverity severity,
const char* expected, const char* expected_tag = nullptr) {
cap.Stop();
std::string output = cap.str();
return CheckMessage(output, severity, expected, expected_tag);
}
#define CHECK_LOG_STREAM_DISABLED(severity) \
{ \
android::base::ScopedLogSeverity sls1(android::base::FATAL); \
CapturedStderr cap1; \
LOG_STREAM(severity) << "foo bar"; \
cap1.Stop(); \
ASSERT_EQ("", cap1.str()); \
} \
{ \
android::base::ScopedLogSeverity sls1(android::base::FATAL); \
CapturedStderr cap1; \
LOG_STREAM(::android::base::severity) << "foo bar"; \
cap1.Stop(); \
ASSERT_EQ("", cap1.str()); \
}
#define CHECK_LOG_STREAM_ENABLED(severity) \
{ \
android::base::ScopedLogSeverity sls2(android::base::severity); \
CapturedStderr cap2; \
LOG_STREAM(severity) << "foobar"; \
CheckMessage(cap2, android::base::severity, "foobar"); \
} \
{ \
android::base::ScopedLogSeverity sls2(android::base::severity); \
CapturedStderr cap2; \
LOG_STREAM(::android::base::severity) << "foobar"; \
CheckMessage(cap2, android::base::severity, "foobar"); \
} \
TEST(logging, LOG_STREAM_FATAL_WITHOUT_ABORT_enabled) {
ASSERT_NO_FATAL_FAILURE(CHECK_LOG_STREAM_ENABLED(FATAL_WITHOUT_ABORT));
}
TEST(logging, LOG_STREAM_ERROR_disabled) {
CHECK_LOG_STREAM_DISABLED(ERROR);
}
TEST(logging, LOG_STREAM_ERROR_enabled) {
ASSERT_NO_FATAL_FAILURE(CHECK_LOG_STREAM_ENABLED(ERROR));
}
TEST(logging, LOG_STREAM_WARNING_disabled) {
CHECK_LOG_STREAM_DISABLED(WARNING);
}
TEST(logging, LOG_STREAM_WARNING_enabled) {
ASSERT_NO_FATAL_FAILURE(CHECK_LOG_STREAM_ENABLED(WARNING));
}
TEST(logging, LOG_STREAM_INFO_disabled) {
CHECK_LOG_STREAM_DISABLED(INFO);
}
TEST(logging, LOG_STREAM_INFO_enabled) {
ASSERT_NO_FATAL_FAILURE(CHECK_LOG_STREAM_ENABLED(INFO));
}
TEST(logging, LOG_STREAM_DEBUG_disabled) {
CHECK_LOG_STREAM_DISABLED(DEBUG);
}
TEST(logging, LOG_STREAM_DEBUG_enabled) {
ASSERT_NO_FATAL_FAILURE(CHECK_LOG_STREAM_ENABLED(DEBUG));
}
TEST(logging, LOG_STREAM_VERBOSE_disabled) {
CHECK_LOG_STREAM_DISABLED(VERBOSE);
}
TEST(logging, LOG_STREAM_VERBOSE_enabled) {
ASSERT_NO_FATAL_FAILURE(CHECK_LOG_STREAM_ENABLED(VERBOSE));
}
#undef CHECK_LOG_STREAM_DISABLED
#undef CHECK_LOG_STREAM_ENABLED
#define CHECK_LOG_DISABLED(severity) \
{ \
android::base::ScopedLogSeverity sls1(android::base::FATAL); \
CapturedStderr cap1; \
LOG(severity) << "foo bar"; \
cap1.Stop(); \
ASSERT_EQ("", cap1.str()); \
} \
{ \
android::base::ScopedLogSeverity sls1(android::base::FATAL); \
CapturedStderr cap1; \
LOG(::android::base::severity) << "foo bar"; \
cap1.Stop(); \
ASSERT_EQ("", cap1.str()); \
}
#define CHECK_LOG_ENABLED(severity) \
{ \
android::base::ScopedLogSeverity sls2(android::base::severity); \
CapturedStderr cap2; \
LOG(severity) << "foobar"; \
CheckMessage(cap2, android::base::severity, "foobar"); \
} \
{ \
android::base::ScopedLogSeverity sls2(android::base::severity); \
CapturedStderr cap2; \
LOG(::android::base::severity) << "foobar"; \
CheckMessage(cap2, android::base::severity, "foobar"); \
} \
TEST(logging, LOG_FATAL) {
ASSERT_DEATH({SuppressAbortUI(); LOG(FATAL) << "foobar";}, "foobar");
ASSERT_DEATH({SuppressAbortUI(); LOG(::android::base::FATAL) << "foobar";}, "foobar");
}
TEST(logging, LOG_FATAL_WITHOUT_ABORT_enabled) {
ASSERT_NO_FATAL_FAILURE(CHECK_LOG_ENABLED(FATAL_WITHOUT_ABORT));
}
TEST(logging, LOG_ERROR_disabled) {
CHECK_LOG_DISABLED(ERROR);
}
TEST(logging, LOG_ERROR_enabled) {
ASSERT_NO_FATAL_FAILURE(CHECK_LOG_ENABLED(ERROR));
}
TEST(logging, LOG_WARNING_disabled) {
CHECK_LOG_DISABLED(WARNING);
}
TEST(logging, LOG_WARNING_enabled) {
ASSERT_NO_FATAL_FAILURE(CHECK_LOG_ENABLED(WARNING));
}
TEST(logging, LOG_INFO_disabled) {
CHECK_LOG_DISABLED(INFO);
}
TEST(logging, LOG_INFO_enabled) {
ASSERT_NO_FATAL_FAILURE(CHECK_LOG_ENABLED(INFO));
}
TEST(logging, LOG_DEBUG_disabled) {
CHECK_LOG_DISABLED(DEBUG);
}
TEST(logging, LOG_DEBUG_enabled) {
ASSERT_NO_FATAL_FAILURE(CHECK_LOG_ENABLED(DEBUG));
}
TEST(logging, LOG_VERBOSE_disabled) {
CHECK_LOG_DISABLED(VERBOSE);
}
TEST(logging, LOG_VERBOSE_enabled) {
ASSERT_NO_FATAL_FAILURE(CHECK_LOG_ENABLED(VERBOSE));
}
#undef CHECK_LOG_DISABLED
#undef CHECK_LOG_ENABLED
TEST(logging, LOG_complex_param) {
#define CHECK_LOG_COMBINATION(use_scoped_log_severity_info, use_logging_severity_info) \
{ \
android::base::ScopedLogSeverity sls( \
(use_scoped_log_severity_info) ? ::android::base::INFO : ::android::base::WARNING); \
CapturedStderr cap; \
LOG((use_logging_severity_info) ? ::android::base::INFO : ::android::base::WARNING) \
<< "foobar"; \
if ((use_scoped_log_severity_info) || !(use_logging_severity_info)) { \
ASSERT_NO_FATAL_FAILURE(CheckMessage( \
cap, (use_logging_severity_info) ? ::android::base::INFO : ::android::base::WARNING, \
"foobar")); \
} else { \
cap.Stop(); \
ASSERT_EQ("", cap.str()); \
} \
}
CHECK_LOG_COMBINATION(false,false);
CHECK_LOG_COMBINATION(false,true);
CHECK_LOG_COMBINATION(true,false);
CHECK_LOG_COMBINATION(true,true);
#undef CHECK_LOG_COMBINATION
}
TEST(logging, LOG_does_not_clobber_errno) {
CapturedStderr cap;
errno = 12345;
LOG(INFO) << (errno = 67890);
EXPECT_EQ(12345, errno) << "errno was not restored";
ASSERT_NO_FATAL_FAILURE(CheckMessage(cap, android::base::INFO, "67890"));
}
TEST(logging, PLOG_does_not_clobber_errno) {
CapturedStderr cap;
errno = 12345;
PLOG(INFO) << (errno = 67890);
EXPECT_EQ(12345, errno) << "errno was not restored";
ASSERT_NO_FATAL_FAILURE(CheckMessage(cap, android::base::INFO, "67890"));
}
TEST(logging, LOG_does_not_have_dangling_if) {
CapturedStderr cap; // So the logging below has no side-effects.
// Do the test two ways: once where we hypothesize that LOG()'s if
// will evaluate to true (when severity is high enough) and once when we
// expect it to evaluate to false (when severity is not high enough).
bool flag = false;
if (true)
LOG(INFO) << "foobar";
else
flag = true;
EXPECT_FALSE(flag) << "LOG macro probably has a dangling if with no else";
flag = false;
if (true)
LOG(VERBOSE) << "foobar";
else
flag = true;
EXPECT_FALSE(flag) << "LOG macro probably has a dangling if with no else";
}
#define CHECK_PLOG_DISABLED(severity) \
{ \
android::base::ScopedLogSeverity sls1(android::base::FATAL); \
CapturedStderr cap1; \
PLOG(severity) << "foo bar"; \
cap1.Stop(); \
ASSERT_EQ("", cap1.str()); \
} \
{ \
android::base::ScopedLogSeverity sls1(android::base::FATAL); \
CapturedStderr cap1; \
PLOG(severity) << "foo bar"; \
cap1.Stop(); \
ASSERT_EQ("", cap1.str()); \
}
#define CHECK_PLOG_ENABLED(severity) \
{ \
android::base::ScopedLogSeverity sls2(android::base::severity); \
CapturedStderr cap2; \
errno = ENOENT; \
PLOG(severity) << "foobar"; \
CheckMessage(cap2, android::base::severity, "foobar: No such file or directory"); \
} \
{ \
android::base::ScopedLogSeverity sls2(android::base::severity); \
CapturedStderr cap2; \
errno = ENOENT; \
PLOG(severity) << "foobar"; \
CheckMessage(cap2, android::base::severity, "foobar: No such file or directory"); \
} \
TEST(logging, PLOG_FATAL) {
ASSERT_DEATH({SuppressAbortUI(); PLOG(FATAL) << "foobar";}, "foobar");
ASSERT_DEATH({SuppressAbortUI(); PLOG(::android::base::FATAL) << "foobar";}, "foobar");
}
TEST(logging, PLOG_FATAL_WITHOUT_ABORT_enabled) {
ASSERT_NO_FATAL_FAILURE(CHECK_PLOG_ENABLED(FATAL_WITHOUT_ABORT));
}
TEST(logging, PLOG_ERROR_disabled) {
CHECK_PLOG_DISABLED(ERROR);
}
TEST(logging, PLOG_ERROR_enabled) {
ASSERT_NO_FATAL_FAILURE(CHECK_PLOG_ENABLED(ERROR));
}
TEST(logging, PLOG_WARNING_disabled) {
CHECK_PLOG_DISABLED(WARNING);
}
TEST(logging, PLOG_WARNING_enabled) {
ASSERT_NO_FATAL_FAILURE(CHECK_PLOG_ENABLED(WARNING));
}
TEST(logging, PLOG_INFO_disabled) {
CHECK_PLOG_DISABLED(INFO);
}
TEST(logging, PLOG_INFO_enabled) {
ASSERT_NO_FATAL_FAILURE(CHECK_PLOG_ENABLED(INFO));
}
TEST(logging, PLOG_DEBUG_disabled) {
CHECK_PLOG_DISABLED(DEBUG);
}
TEST(logging, PLOG_DEBUG_enabled) {
ASSERT_NO_FATAL_FAILURE(CHECK_PLOG_ENABLED(DEBUG));
}
TEST(logging, PLOG_VERBOSE_disabled) {
CHECK_PLOG_DISABLED(VERBOSE);
}
TEST(logging, PLOG_VERBOSE_enabled) {
ASSERT_NO_FATAL_FAILURE(CHECK_PLOG_ENABLED(VERBOSE));
}
#undef CHECK_PLOG_DISABLED
#undef CHECK_PLOG_ENABLED
TEST(logging, UNIMPLEMENTED) {
std::string expected = android::base::StringPrintf("%s unimplemented ", __PRETTY_FUNCTION__);
CapturedStderr cap;
errno = ENOENT;
UNIMPLEMENTED(ERROR);
ASSERT_NO_FATAL_FAILURE(CheckMessage(cap, android::base::ERROR, expected.c_str()));
}
static void NoopAborter(const char* msg ATTRIBUTE_UNUSED) {
LOG(ERROR) << "called noop";
}
TEST(logging, LOG_FATAL_NOOP_ABORTER) {
CapturedStderr cap;
{
android::base::SetAborter(NoopAborter);
android::base::ScopedLogSeverity sls(android::base::ERROR);
LOG(FATAL) << "foobar";
cap.Stop();
android::base::SetAborter(android::base::DefaultAborter);
}
std::string output = cap.str();
ASSERT_NO_FATAL_FAILURE(CheckMessage(output, android::base::FATAL, "foobar"));
ASSERT_NO_FATAL_FAILURE(CheckMessage(output, android::base::ERROR, "called noop"));
ASSERT_DEATH({SuppressAbortUI(); LOG(FATAL) << "foobar";}, "foobar");
}
struct CountLineAborter {
static void CountLineAborterFunction(const char* msg) {
while (*msg != 0) {
if (*msg == '\n') {
newline_count++;
}
msg++;
}
}
static size_t newline_count;
};
size_t CountLineAborter::newline_count = 0;
TEST(logging, LOG_FATAL_ABORTER_MESSAGE) {
CountLineAborter::newline_count = 0;
android::base::SetAborter(CountLineAborter::CountLineAborterFunction);
android::base::ScopedLogSeverity sls(android::base::ERROR);
CapturedStderr cap;
LOG(FATAL) << "foo\nbar";
EXPECT_EQ(CountLineAborter::newline_count, 1U);
}
TEST(logging, SetAborterReturnsOldFunction) {
// std::function is not comparable, it only supports a null check.
android::base::AbortFunction old_aborter;
EXPECT_FALSE(old_aborter);
old_aborter = android::base::SetAborter(android::base::DefaultAborter);
EXPECT_TRUE(old_aborter);
}
__attribute__((constructor)) void TestLoggingInConstructor() {
LOG(ERROR) << "foobar";
}
TEST(logging, StdioLogger) {
CapturedStderr cap_err;
CapturedStdout cap_out;
android::base::SetLogger(android::base::StdioLogger);
LOG(INFO) << "out";
LOG(ERROR) << "err";
cap_err.Stop();
cap_out.Stop();
// For INFO we expect just the literal "out\n".
ASSERT_EQ("out\n", cap_out.str());
// Whereas ERROR logging includes the program name.
ASSERT_EQ(android::base::Basename(android::base::GetExecutablePath()) + ": err\n", cap_err.str());
}
TEST(logging, SetLoggerReturnsOldFunction) {
// std::function is not comparable, it only supports a null check.
android::base::LogFunction old_function;
EXPECT_FALSE(old_function);
old_function = android::base::SetLogger(android::base::StdioLogger);
EXPECT_TRUE(old_function);
}
TEST(logging, ForkSafe) {
#if !defined(_WIN32)
using namespace android::base;
SetLogger(
[&](LogId, LogSeverity, const char*, const char*, unsigned int, const char*) { sleep(3); });
auto guard = make_scope_guard([&] {
#ifdef __ANDROID__
SetLogger(LogdLogger());
#else
SetLogger(StderrLogger);
#endif
});
auto thread = std::thread([] {
LOG(ERROR) << "This should sleep for 3 seconds, long enough to fork another process, if there "
"is no intervention";
});
thread.detach();
auto pid = fork();
ASSERT_NE(-1, pid);
if (pid == 0) {
// Reset the logger, so the next message doesn't sleep().
SetLogger([](LogId, LogSeverity, const char*, const char*, unsigned int, const char*) {});
LOG(ERROR) << "This should succeed in the child, only if libbase is forksafe.";
_exit(EXIT_SUCCESS);
}
// Wait for up to 3 seconds for the child to exit.
int tries = 3;
bool found_child = false;
while (tries-- > 0) {
auto result = waitpid(pid, nullptr, WNOHANG);
EXPECT_NE(-1, result);
if (result == pid) {
found_child = true;
break;
}
sleep(1);
}
EXPECT_TRUE(found_child);
// Kill the child if it did not exit.
if (!found_child) {
kill(pid, SIGKILL);
}
#endif
}
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