diff options
Diffstat (limited to 'libs/hwui/DisplayListLogBuffer.cpp')
| -rw-r--r-- | libs/hwui/DisplayListLogBuffer.cpp | 112 |
1 files changed, 0 insertions, 112 deletions
diff --git a/libs/hwui/DisplayListLogBuffer.cpp b/libs/hwui/DisplayListLogBuffer.cpp deleted file mode 100644 index bc9e7bd..0000000 --- a/libs/hwui/DisplayListLogBuffer.cpp +++ /dev/null @@ -1,112 +0,0 @@ -/* - * 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 "DisplayListLogBuffer.h" - -// BUFFER_SIZE size must be one more than a multiple of COMMAND_SIZE to ensure -// that mStart always points at the next command, not just the next item -#define NUM_COMMANDS 50 -#define BUFFER_SIZE ((NUM_COMMANDS) + 1) - -/** - * DisplayListLogBuffer is a utility class which logs the most recent display - * list operations in a circular buffer. The log is process-wide, because we - * only care about the most recent operations, not the operations on a per-window - * basis for a given activity. The purpose of the log is to provide more debugging - * information in a bug report, by telling us not just where a process hung (which - * generally is just reported as a stack trace at the Java level) or crashed, but - * also what happened immediately before that hang or crash. This may help track down - * problems in the native rendering code or driver interaction related to the display - * list operations that led up to the hang or crash. - * - * The log is implemented as a circular buffer for both space and performance - * reasons - we only care about the last several operations to give us context - * leading up to the problem, and we don't want to constantly copy data around or do - * additional mallocs to keep the most recent operations logged. Only numbers are - * logged to make the operation fast. If and when the log is output, we process this - * data into meaningful strings. - * - * There is an assumption about the format of the command (currently 2 ints: the - * opcode and the nesting level). If the type of information logged changes (for example, - * we may want to save a timestamp), then the size of the buffer and the way the - * information is recorded in writeCommand() should change to suit. - */ - -namespace android { - -#ifdef USE_OPENGL_RENDERER -using namespace uirenderer; -ANDROID_SINGLETON_STATIC_INSTANCE(DisplayListLogBuffer); -#endif - -namespace uirenderer { - - -DisplayListLogBuffer::DisplayListLogBuffer() { - mBufferFirst = (OpLog*) malloc(BUFFER_SIZE * sizeof(OpLog)); - mStart = mBufferFirst; - mBufferLast = mBufferFirst + BUFFER_SIZE - 1; - mEnd = mStart; -} - -DisplayListLogBuffer::~DisplayListLogBuffer() { - free(mBufferFirst); -} - -/** - * Called from DisplayListRenderer to output the current buffer into the - * specified FILE. This only happens in a dumpsys/bugreport operation. - */ -void DisplayListLogBuffer::outputCommands(FILE *file) -{ - OpLog* tmpBufferPtr = mStart; - while (true) { - if (tmpBufferPtr == mEnd) { - break; - } - - fprintf(file, "%*s%s\n", 2 * tmpBufferPtr->level, "", tmpBufferPtr->label); - - tmpBufferPtr++; - if (tmpBufferPtr > mBufferLast) { - tmpBufferPtr = mBufferFirst; - } - } -} - -/** - * Store the given level and label in the buffer and increment/wrap the mEnd - * and mStart values as appropriate. Label should point to static memory. - */ -void DisplayListLogBuffer::writeCommand(int level, const char* label) { - mEnd->level = level; - mEnd->label = label; - - if (mEnd == mBufferLast) { - mEnd = mBufferFirst; - } else { - mEnd++; - } - if (mEnd == mStart) { - mStart++; - if (mStart > mBufferLast) { - mStart = mBufferFirst; - } - } -} - -}; // namespace uirenderer -}; // namespace android |
