1 /*
   2  * Copyright (c) 2016, Oracle and/or its affiliates. All rights reserved.
   3  * DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER.
   4  *
   5  * This code is free software; you can redistribute it and/or modify it
   6  * under the terms of the GNU General Public License version 2 only, as
   7  * published by the Free Software Foundation.
   8  *
   9  * This code is distributed in the hope that it will be useful, but WITHOUT
  10  * ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or
  11  * FITNESS FOR A PARTICULAR PURPOSE.  See the GNU General Public License
  12  * version 2 for more details (a copy is included in the LICENSE file that
  13  * accompanied this code).
  14  *
  15  * You should have received a copy of the GNU General Public License version
  16  * 2 along with this work; if not, write to the Free Software Foundation,
  17  * Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA.
  18  *
  19  * Please contact Oracle, 500 Oracle Parkway, Redwood Shores, CA 94065 USA
  20  * or visit www.oracle.com if you need additional information or have any
  21  * questions.
  22  *
  23  */
  24 #include "precompiled.hpp"
  25 #include "logTestFixture.hpp"
  26 #include "logTestUtils.inline.hpp"
  27 #include "logging/log.hpp"
  28 #include "logging/logStream.hpp"
  29 #include "unittest.hpp"
  30 
  31 class LogStreamTest : public LogTestFixture {
  32  protected:
  33   void verify_stream(outputStream* stream);
  34 };
  35 
  36 void LogStreamTest::verify_stream(outputStream* stream) {
  37   set_log_config(TestLogFileName, "gc=debug");
  38   stream->print("%d ", 3);
  39   stream->print("workers");
  40   stream->cr();
  41   EXPECT_TRUE(file_contains_substring(TestLogFileName, "3 workers\n"));
  42 }
  43 
  44 TEST_VM_F(LogStreamTest, from_log) {
  45   Log(gc) log;
  46   LogStream stream(log.debug());
  47 
  48   verify_stream(&stream);
  49 }
  50 
  51 TEST_VM_F(LogStreamTest, from_logtarget) {
  52   LogTarget(Debug, gc) log;
  53   LogStream stream(log);
  54 
  55   verify_stream(&stream);
  56 }
  57 
  58 TEST_VM_F(LogStreamTest, handle) {
  59   LogStreamHandle(Debug, gc) stream;
  60 
  61   verify_stream(&stream);
  62 }
  63 
  64 TEST_VM_F(LogStreamTest, no_rm) {
  65   ResourceMark rm;
  66   LogStream ls(Log(gc)::debug());
  67   verify_stream(&ls);
  68 }
  69 
  70 TEST_VM_F(LogStreamTest, TestLineBufferAllocation) {
  71   const int max_line_len = 1024;
  72   char* const test_string = (char*) os::malloc(max_line_len, mtLogging);
  73   memset(test_string, 'A', max_line_len);
  74   for (int interval = 1; interval < max_line_len; interval++) {
  75     LogStream ls(Log(logging)::info());
  76     int written = 0;
  77     while (written < max_line_len) {
  78       const int to_write = MIN2(interval, max_line_len - written);
  79       ls.write(test_string, interval);
  80       written += interval;
  81       const char* const line_buffer = ls._current_line.ptr();
  82       for (int i = 0; i < written; i++) {
  83         ASSERT_TRUE(line_buffer[i] == 'A');
  84       }
  85       ASSERT_TRUE(line_buffer[written] == '\0');
  86     }
  87     ls.cr(); // I do not expect printout, nor do I care. Just call cr() to flush and avoid assert in ~LogStream().
  88   }
  89 }
  90