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/*
* Copyright (c) 2016, 2024, Oracle and/or its affiliates. All rights reserved.
* DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER.
*
* This code is free software; you can redistribute it and/or modify it
* under the terms of the GNU General Public License version 2 only, as
* published by the Free Software Foundation.
*
* This code is distributed in the hope that it will be useful, but WITHOUT
* ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or
* FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License
* version 2 for more details (a copy is included in the LICENSE file that
* accompanied this code).
*
* You should have received a copy of the GNU General Public License version
* 2 along with this work; if not, write to the Free Software Foundation,
* Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA.
*
* Please contact Oracle, 500 Oracle Parkway, Redwood Shores, CA 94065 USA
* or visit www.oracle.com if you need additional information or have any
* questions.
*
*/
#include "precompiled.hpp"
#include "jvm.h"
#include "logTestFixture.hpp"
#include "logTestUtils.inline.hpp"
#include "logging/log.hpp"
#include "logging/logMessage.hpp"
#include "logging/logStream.hpp"
#include "memory/resourceArea.hpp"
#include "unittest.hpp"
class LogStreamTest : public LogTestFixture {
protected:
void verify_stream(outputStream* stream);
};
void LogStreamTest::verify_stream(outputStream* stream) {
set_log_config(TestLogFileName, "gc=debug");
stream->print("%d ", 3);
stream->print("workers");
stream->cr();
EXPECT_TRUE(file_contains_substring(TestLogFileName, "3 workers\n"));
}
TEST_VM_F(LogStreamTest, from_log) {
Log(gc) log;
LogStream stream(log.debug());
verify_stream(&stream);
}
TEST_VM_F(LogStreamTest, from_logtarget) {
LogTarget(Debug, gc) log;
LogStream stream(log);
verify_stream(&stream);
}
TEST_VM_F(LogStreamTest, handle) {
LogStreamHandle(Debug, gc) stream;
verify_stream(&stream);
}
TEST_VM_F(LogStreamTest, no_rm) {
ResourceMark rm;
LogStream ls(Log(gc)::debug());
verify_stream(&ls);
}
TEST_VM_F(LogStreamTest, TestLineBufferAllocation) {
const int max_line_len = 1024;
char* const test_string = (char*) os::malloc(max_line_len, mtLogging);
memset(test_string, 'A', max_line_len);
Log(gc) log;
set_log_config(TestLogFileName, "gc=debug");
for (int interval = 1; interval < max_line_len; interval++) {
LogStream ls(log.debug());
int written = 0;
while (written < max_line_len) {
const int to_write = MIN2(interval, max_line_len - written);
ls.write(test_string, interval);
written += interval;
const char* const line_buffer = ls._current_line.buffer();
for (int i = 0; i < written; i++) {
ASSERT_TRUE(line_buffer[i] == 'A');
}
ASSERT_TRUE(line_buffer[written] == '\0');
}
}
}
// LogStream allows interleaving of other messages.
// Compare this to NonInterLeavingLogStreamTest_NonInterleavingStream
TEST_VM_F(LogStreamTest, InterleavingStream) {
set_log_config(TestLogFileName, "gc=info");
const char* message_order[] = {"1", "I am one line", "2", "but", "3", "I am not", nullptr};
{
LogStream foo(Log(gc)::info());
if (foo.is_enabled()) {
foo.print("I am");
log_info(gc)("1");
foo.print_cr(" one line");
log_info(gc)("2");
foo.print_cr("but");
log_info(gc)("3");
foo.print_cr("I am not");
}
}
EXPECT_TRUE(file_contains_substrings_in_order(TestLogFileName, message_order));
}
// NonInterleavingLogStream does not allow interleaving of other messages.
// Compare this to LogStreamTest_InterleavingStream
TEST_VM_F(LogStreamTest, NonInterleavingStream) {
set_log_config(TestLogFileName, "gc=info");
const char* message_order[] = {"1", "2" , "3", "I am one line", "but", "I am not", nullptr};
{
LogMessage(gc) lm ;
NonInterleavingLogStream foo{LogLevelType::Info, lm};
if (foo.is_enabled()) {
foo.print("I am");
log_info(gc)("1");
foo.print_cr(" one line");
log_info(gc)("2");
foo.print_cr("but");
log_info(gc)("3");
foo.print_cr("I am not");
}
}
EXPECT_TRUE(file_contains_substrings_in_order(TestLogFileName, message_order));
}
// Test, in release build, that the internal line buffer of a LogStream
// object caps out at 1M.
TEST_VM_F(LogStreamTest, TestLineBufferAllocationCap) {
LogStream ls(Log(logging)::info());
for (size_t i = 0; i < (1*M + 512); i ++) {
ls.print_raw("A");
}
const char* const line_buffer = ls._current_line.buffer();
ASSERT_TRUE(strlen(line_buffer) == 1*M - 1);
// reset to prevent assert for unflushed content
ls._current_line.reset();
}
TEST_VM_F(LogStreamTest, autoflush_on_destruction) {
Log(gc) log;
set_log_config(TestLogFileName, "gc=debug");
{
LogStream stream(log.debug());
stream.print("ABCD"); // Unfinished line. I expect not to assert upon leaving the scope.
}
EXPECT_TRUE(file_contains_substring(TestLogFileName, "ABCD\n"));
}
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