blob: bb684421840326e16ed28d9df7d41cb901f556a1 [file] [log] [blame]
/*
* Copyright (C) 2011 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 "logging.h"
#include "runtime.h"
#include "thread.h"
#include "utils.h"
namespace art {
art::Mutex& GetLoggingLock() {
static art::Mutex lock("LogMessage lock");
return lock;
}
LogMessage::~LogMessage() {
// Finish constructing the message.
if (data_->error != -1) {
data_->buffer << ": " << strerror(data_->error);
}
std::string msg(data_->buffer.str());
// Do the actual logging with the lock held.
{
art::MutexLock mu(GetLoggingLock());
if (msg.find('\n') == std::string::npos) {
LogLine(msg.c_str());
} else {
msg += '\n';
size_t i = 0;
while (i < msg.size()) {
size_t nl = msg.find('\n', i);
msg[nl] = '\0';
LogLine(&msg[i]);
i = nl + 1;
}
}
}
// Abort if necessary.
if (data_->severity == FATAL) {
art::Runtime::Abort(data_->file, data_->line_number);
}
delete data_;
}
std::ostream& LogMessage::stream() {
return data_->buffer;
}
/*
* Print a hex dump in this format:
*
* 01234567: 00 11 22 33 44 55 66 77 88 99 aa bb cc dd ee ff 0123456789abcdef\n
*
* Does not use printf() or other string-formatting calls.
*/
void HexDump(const void* address, size_t byte_count, bool show_actual_address) {
static const char gHexDigit[] = "0123456789abcdef";
const unsigned char* addr = reinterpret_cast<const unsigned char*>(address);
char out[77]; /* exact fit */
unsigned int offset; /* offset to show while printing */
if (show_actual_address) {
offset = (int) addr;
} else {
offset = 0;
}
memset(out, ' ', sizeof(out)-1);
out[8] = ':';
out[sizeof(out)-2] = '\n';
out[sizeof(out)-1] = '\0';
int gap = (int) offset & 0x0f;
while (byte_count) {
unsigned int lineOffset = offset & ~0x0f;
int i, count;
char* hex = out;
char* asc = out + 59;
for (i = 0; i < 8; i++) {
*hex++ = gHexDigit[lineOffset >> 28];
lineOffset <<= 4;
}
hex++;
hex++;
count = ((int)byte_count > 16-gap) ? 16-gap : (int)byte_count; /* cap length */
CHECK_NE(count, 0);
CHECK_LE(count + gap, 16);
if (gap) {
/* only on first line */
hex += gap * 3;
asc += gap;
}
for (i = gap ; i < count+gap; i++) {
*hex++ = gHexDigit[*addr >> 4];
*hex++ = gHexDigit[*addr & 0x0f];
hex++;
if (*addr >= 0x20 && *addr < 0x7f /*isprint(*addr)*/)
*asc++ = *addr;
else
*asc++ = '.';
addr++;
}
for ( ; i < 16; i++) {
/* erase extra stuff; only happens on last line */
*hex++ = ' ';
*hex++ = ' ';
hex++;
*asc++ = ' ';
}
LOG(INFO) << out;
gap = 0;
byte_count -= count;
offset += count;
}
}
} // namespace art