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8288298: Resolve multiline message parsing ambiguities in UL

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Reviewed-by: jsjolen, rcastanedalo, dholmes
This commit is contained in:
Antón Seoane Ampudia 2024-11-18 10:40:33 +00:00
parent ea8f28980c
commit 5fc4322267
2 changed files with 31 additions and 9 deletions
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32
src/hotspot/share/logging/logFileStreamOutput.cpp
View File

@ -1,5 +1,5 @@
/*
* Copyright (c) 2015, 2023, Oracle and/or its affiliates. All rights reserved.
* Copyright (c) 2015, 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
@ -30,6 +30,7 @@
#include "logging/logMessageBuffer.hpp"
#include "memory/allocation.inline.hpp"
#include "utilities/defaultStream.hpp"
#include <string.h>
const char* const LogFileStreamOutput::FoldMultilinesOptionKey = "foldmultilines";
@ -119,14 +120,35 @@ int LogFileStreamOutput::write_internal(const LogDecorations& decorations, const
int written = 0;
const bool use_decorations = !_decorators.is_empty();
if (!_fold_multilines) {
const char* base = msg;
int decorator_padding = 0;
if (use_decorations) {
WRITE_LOG_WITH_RESULT_CHECK(write_decorations(decorations), decorator_padding);
WRITE_LOG_WITH_RESULT_CHECK(jio_fprintf(_stream, " "), written);
}
written += decorator_padding;
// Search for newlines in the string and repeatedly print the substrings that end
// with each newline.
const char* next = strstr(msg, "\n");
while (next != nullptr) { // We have some newlines to print
int to_print = next - base;
WRITE_LOG_WITH_RESULT_CHECK(jio_fprintf(_stream, "%.*s\n", to_print, base), written);
if (use_decorations) {
WRITE_LOG_WITH_RESULT_CHECK(jio_fprintf(_stream, "[%*c] ", decorator_padding - 2, ' '), written); // Substracting 2 because decorator_padding includes the brackets
}
base = next + 1;
next = strstr(base, "\n");
}
// Print the end of the message
WRITE_LOG_WITH_RESULT_CHECK(jio_fprintf(_stream, "%s\n", base), written);
} else {
if (use_decorations) {
WRITE_LOG_WITH_RESULT_CHECK(write_decorations(decorations), written);
WRITE_LOG_WITH_RESULT_CHECK(jio_fprintf(_stream, " "), written);
}
if (!_fold_multilines) {
WRITE_LOG_WITH_RESULT_CHECK(jio_fprintf(_stream, "%s\n", msg), written);
} else {
char *dupstr = os::strdup_check_oom(msg, mtLogging);
char *cur = dupstr;
char *next;

4
test/hotspot/jtreg/runtime/logging/FoldMultilinesTest.java
View File

@ -1,5 +1,5 @@
/*
* Copyright (c) 2021, 2023, Oracle and/or its affiliates. All rights reserved.
* Copyright (c) 2021, 2024, Oracle and/or its affiliates. All rights reserved.
* Copyright (c) 2021 NTT DATA.
* DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER.
*
@ -41,7 +41,7 @@ public class FoldMultilinesTest {
private static String XLOG_BASE = "-Xlog:exceptions=info:";
private static String EXCEPTION_MESSAGE = "line 1\nline 2\\nstring";
private static String FOLDED_EXCEPTION_MESSAGE = "line 1\\nline 2\\\\nstring";
private static Pattern NEWLINE_LOG_PATTERN = Pattern.compile("line 1\\Rline 2\\\\nstring", Pattern.MULTILINE);
private static Pattern NEWLINE_LOG_PATTERN = Pattern.compile("line 1\\R\\[\\s+\\] line 2\\\\nstring", Pattern.MULTILINE);
private static String getLog(String out, OutputAnalyzer output) throws Exception {
return switch (out) {