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src/share/vm/logging/logTagSet.cpp

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rev 11119 : [mq]: 8146948


  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 "logging/logDecorations.hpp"
  26 #include "logging/logLevel.hpp"
  27 #include "logging/logOutput.hpp"
  28 #include "logging/logTag.hpp"
  29 #include "logging/logTagSet.hpp"

  30 #include "memory/allocation.inline.hpp"

  31 
  32 LogTagSet*  LogTagSet::_list      = NULL;
  33 size_t      LogTagSet::_ntagsets  = 0;
  34 
  35 // This constructor is called only during static initialization.
  36 // See the declaration in logTagSet.hpp for more information.
  37 LogTagSet::LogTagSet(PrefixWriter prefix_writer, LogTagType t0, LogTagType t1, LogTagType t2, LogTagType t3, LogTagType t4)
  38     : _next(_list), _write_prefix(prefix_writer) {
  39   _tag[0] = t0;
  40   _tag[1] = t1;
  41   _tag[2] = t2;
  42   _tag[3] = t3;
  43   _tag[4] = t4;
  44   for (_ntags = 0; _ntags < LogTag::MaxTags && _tag[_ntags] != LogTag::__NO_TAG; _ntags++) {
  45   }
  46   _list = this;
  47   _ntagsets++;
  48 
  49   // Set the default output to warning and error level for all new tagsets.
  50   _output_list.set_output_level(LogOutput::Stderr, LogLevel::Default);


 102   char buf[vwrite_buffer_size];
 103   va_list saved_args;           // For re-format on buf overflow.
 104   va_copy(saved_args, args);
 105   size_t prefix_len = _write_prefix(buf, sizeof(buf));
 106   // Check that string fits in buffer; resize buffer if necessary
 107   int ret = os::log_vsnprintf(buf + prefix_len, sizeof(buf) - prefix_len, fmt, args);
 108   assert(ret >= 0, "Log message buffer issue");
 109   if ((size_t)ret >= sizeof(buf)) {
 110     size_t newbuf_len = prefix_len + ret + 1;
 111     char* newbuf = NEW_C_HEAP_ARRAY(char, newbuf_len, mtLogging);
 112     memcpy(newbuf, buf, prefix_len);
 113     ret = os::log_vsnprintf(newbuf + prefix_len, newbuf_len - prefix_len, fmt, saved_args);
 114     assert(ret >= 0, "Log message buffer issue");
 115     log(level, newbuf);
 116     FREE_C_HEAP_ARRAY(char, newbuf);
 117   } else {
 118     log(level, buf);
 119   }
 120   va_end(saved_args);
 121 }











































  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 "logging/logDecorations.hpp"
  26 #include "logging/logLevel.hpp"
  27 #include "logging/logOutput.hpp"
  28 #include "logging/logTag.hpp"
  29 #include "logging/logTagSet.hpp"
  30 #include "logging/logTagSetDescriptions.inline.hpp"
  31 #include "memory/allocation.inline.hpp"
  32 #include "utilities/ostream.hpp"
  33 
  34 LogTagSet*  LogTagSet::_list      = NULL;
  35 size_t      LogTagSet::_ntagsets  = 0;
  36 
  37 // This constructor is called only during static initialization.
  38 // See the declaration in logTagSet.hpp for more information.
  39 LogTagSet::LogTagSet(PrefixWriter prefix_writer, LogTagType t0, LogTagType t1, LogTagType t2, LogTagType t3, LogTagType t4)
  40     : _next(_list), _write_prefix(prefix_writer) {
  41   _tag[0] = t0;
  42   _tag[1] = t1;
  43   _tag[2] = t2;
  44   _tag[3] = t3;
  45   _tag[4] = t4;
  46   for (_ntags = 0; _ntags < LogTag::MaxTags && _tag[_ntags] != LogTag::__NO_TAG; _ntags++) {
  47   }
  48   _list = this;
  49   _ntagsets++;
  50 
  51   // Set the default output to warning and error level for all new tagsets.
  52   _output_list.set_output_level(LogOutput::Stderr, LogLevel::Default);


 104   char buf[vwrite_buffer_size];
 105   va_list saved_args;           // For re-format on buf overflow.
 106   va_copy(saved_args, args);
 107   size_t prefix_len = _write_prefix(buf, sizeof(buf));
 108   // Check that string fits in buffer; resize buffer if necessary
 109   int ret = os::log_vsnprintf(buf + prefix_len, sizeof(buf) - prefix_len, fmt, args);
 110   assert(ret >= 0, "Log message buffer issue");
 111   if ((size_t)ret >= sizeof(buf)) {
 112     size_t newbuf_len = prefix_len + ret + 1;
 113     char* newbuf = NEW_C_HEAP_ARRAY(char, newbuf_len, mtLogging);
 114     memcpy(newbuf, buf, prefix_len);
 115     ret = os::log_vsnprintf(newbuf + prefix_len, newbuf_len - prefix_len, fmt, saved_args);
 116     assert(ret >= 0, "Log message buffer issue");
 117     log(level, newbuf);
 118     FREE_C_HEAP_ARRAY(char, newbuf);
 119   } else {
 120     log(level, buf);
 121   }
 122   va_end(saved_args);
 123 }
 124 
 125 static const size_t TagSetBufferSize = 128;
 126 
 127 void LogTagSet::describe_tagsets(outputStream* out) {
 128   out->print_cr("Described tag combinations:");
 129   for (const LogTagSetDescription* d = tagset_descriptions; d->tagset != NULL; d++) {
 130     char buf[TagSetBufferSize];
 131     d->tagset->label(buf, sizeof(buf), "+");
 132     out->print_cr(" %s: %s", buf, d->descr);
 133   }
 134 }
 135 
 136 static int qsort_strcmp(const void* a, const void* b) {
 137   return strcmp((*(const char**)a), (*(const char**)b));
 138 }
 139 
 140 void LogTagSet::list_all_tagsets(outputStream* out) {
 141   char** tagset_labels = NEW_C_HEAP_ARRAY(char*, _ntagsets, mtLogging);
 142 
 143   // Generate the list of tagset labels
 144   size_t idx = 0;
 145   for (LogTagSet* ts = first(); ts != NULL; ts = ts->next()) {
 146     char buf[TagSetBufferSize];
 147     ts->label(buf, sizeof(buf), "+");
 148     tagset_labels[idx++] = os::strdup_check_oom(buf, mtLogging);
 149   }
 150   assert(idx == _ntagsets, "_ntagsets and list of tagsets not in sync");
 151 
 152   // Sort them lexicographically
 153   qsort(tagset_labels, _ntagsets, sizeof(*tagset_labels), qsort_strcmp);
 154 
 155   // Print and then free the labels
 156   out->print("All available tag sets: ");
 157   for (idx = 0; idx < _ntagsets; idx++) {
 158     out->print("%s%s", (idx == 0 ? "" : ", "), tagset_labels[idx]);
 159     os::free(tagset_labels[idx]);
 160   }
 161   out->cr();
 162   FREE_C_HEAP_ARRAY(char*, tagset_labels);
 163 }
 164 
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