summaryrefslogtreecommitdiffstats
path: root/libs/utils/BufferedTextOutput.cpp
diff options
context:
space:
mode:
Diffstat (limited to 'libs/utils/BufferedTextOutput.cpp')
-rw-r--r--libs/utils/BufferedTextOutput.cpp279
1 files changed, 0 insertions, 279 deletions
diff --git a/libs/utils/BufferedTextOutput.cpp b/libs/utils/BufferedTextOutput.cpp
deleted file mode 100644
index 989662e..0000000
--- a/libs/utils/BufferedTextOutput.cpp
+++ /dev/null
@@ -1,279 +0,0 @@
-/*
- * Copyright (C) 2006 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 <utils/BufferedTextOutput.h>
-
-#include <utils/Atomic.h>
-#include <utils/Debug.h>
-#include <utils/Log.h>
-#include <utils/RefBase.h>
-#include <utils/Vector.h>
-#include <cutils/threads.h>
-
-#include <private/utils/Static.h>
-
-#include <stdio.h>
-#include <stdlib.h>
-
-// ---------------------------------------------------------------------------
-
-namespace android {
-
-struct BufferedTextOutput::BufferState : public RefBase
-{
- BufferState(int32_t _seq)
- : seq(_seq)
- , buffer(NULL)
- , bufferPos(0)
- , bufferSize(0)
- , atFront(true)
- , indent(0)
- , bundle(0) {
- }
- ~BufferState() {
- free(buffer);
- }
-
- status_t append(const char* txt, size_t len) {
- if ((len+bufferPos) > bufferSize) {
- void* b = realloc(buffer, ((len+bufferPos)*3)/2);
- if (!b) return NO_MEMORY;
- buffer = (char*)b;
- }
- memcpy(buffer+bufferPos, txt, len);
- bufferPos += len;
- return NO_ERROR;
- }
-
- void restart() {
- bufferPos = 0;
- atFront = true;
- if (bufferSize > 256) {
- void* b = realloc(buffer, 256);
- if (b) {
- buffer = (char*)b;
- bufferSize = 256;
- }
- }
- }
-
- const int32_t seq;
- char* buffer;
- size_t bufferPos;
- size_t bufferSize;
- bool atFront;
- int32_t indent;
- int32_t bundle;
-};
-
-struct BufferedTextOutput::ThreadState
-{
- Vector<sp<BufferedTextOutput::BufferState> > states;
-};
-
-static mutex_t gMutex;
-
-static thread_store_t tls;
-
-BufferedTextOutput::ThreadState* BufferedTextOutput::getThreadState()
-{
- ThreadState* ts = (ThreadState*) thread_store_get( &tls );
- if (ts) return ts;
- ts = new ThreadState;
- thread_store_set( &tls, ts, threadDestructor );
- return ts;
-}
-
-void BufferedTextOutput::threadDestructor(void *st)
-{
- delete ((ThreadState*)st);
-}
-
-static volatile int32_t gSequence = 0;
-
-static volatile int32_t gFreeBufferIndex = -1;
-
-static int32_t allocBufferIndex()
-{
- int32_t res = -1;
-
- mutex_lock(&gMutex);
-
- if (gFreeBufferIndex >= 0) {
- res = gFreeBufferIndex;
- gFreeBufferIndex = gTextBuffers[res];
- gTextBuffers.editItemAt(res) = -1;
-
- } else {
- res = gTextBuffers.size();
- gTextBuffers.add(-1);
- }
-
- mutex_unlock(&gMutex);
-
- return res;
-}
-
-static void freeBufferIndex(int32_t idx)
-{
- mutex_lock(&gMutex);
- gTextBuffers.editItemAt(idx) = gFreeBufferIndex;
- gFreeBufferIndex = idx;
- mutex_unlock(&gMutex);
-}
-
-// ---------------------------------------------------------------------------
-
-BufferedTextOutput::BufferedTextOutput(uint32_t flags)
- : mFlags(flags)
- , mSeq(android_atomic_inc(&gSequence))
- , mIndex(allocBufferIndex())
-{
- mGlobalState = new BufferState(mSeq);
- if (mGlobalState) mGlobalState->incStrong(this);
-}
-
-BufferedTextOutput::~BufferedTextOutput()
-{
- if (mGlobalState) mGlobalState->decStrong(this);
- freeBufferIndex(mIndex);
-}
-
-status_t BufferedTextOutput::print(const char* txt, size_t len)
-{
- //printf("BufferedTextOutput: printing %d\n", len);
-
- AutoMutex _l(mLock);
- BufferState* b = getBuffer();
-
- const char* const end = txt+len;
-
- status_t err;
-
- while (txt < end) {
- // Find the next line.
- const char* first = txt;
- while (txt < end && *txt != '\n') txt++;
-
- // Include this and all following empty lines.
- while (txt < end && *txt == '\n') txt++;
-
- // Special cases for first data on a line.
- if (b->atFront) {
- if (b->indent > 0) {
- // If this is the start of a line, add the indent.
- const char* prefix = stringForIndent(b->indent);
- err = b->append(prefix, strlen(prefix));
- if (err != NO_ERROR) return err;
-
- } else if (*(txt-1) == '\n' && !b->bundle) {
- // Fast path: if we are not indenting or bundling, and
- // have been given one or more complete lines, just write
- // them out without going through the buffer.
-
- // Slurp up all of the lines.
- const char* lastLine = txt+1;
- while (txt < end) {
- if (*txt++ == '\n') lastLine = txt;
- }
- struct iovec vec;
- vec.iov_base = (void*)first;
- vec.iov_len = lastLine-first;
- //printf("Writing %d bytes of data!\n", vec.iov_len);
- writeLines(vec, 1);
- txt = lastLine;
- continue;
- }
- }
-
- // Append the new text to the buffer.
- err = b->append(first, txt-first);
- if (err != NO_ERROR) return err;
- b->atFront = *(txt-1) == '\n';
-
- // If we have finished a line and are not bundling, write
- // it out.
- //printf("Buffer is now %d bytes\n", b->bufferPos);
- if (b->atFront && !b->bundle) {
- struct iovec vec;
- vec.iov_base = b->buffer;
- vec.iov_len = b->bufferPos;
- //printf("Writing %d bytes of data!\n", vec.iov_len);
- writeLines(vec, 1);
- b->restart();
- }
- }
-
- return NO_ERROR;
-}
-
-void BufferedTextOutput::moveIndent(int delta)
-{
- AutoMutex _l(mLock);
- BufferState* b = getBuffer();
- b->indent += delta;
- if (b->indent < 0) b->indent = 0;
-}
-
-void BufferedTextOutput::pushBundle()
-{
- AutoMutex _l(mLock);
- BufferState* b = getBuffer();
- b->bundle++;
-}
-
-void BufferedTextOutput::popBundle()
-{
- AutoMutex _l(mLock);
- BufferState* b = getBuffer();
- b->bundle--;
- LOG_FATAL_IF(b->bundle < 0,
- "TextOutput::popBundle() called more times than pushBundle()");
- if (b->bundle < 0) b->bundle = 0;
-
- if (b->bundle == 0) {
- // Last bundle, write out data if it is complete. If it is not
- // complete, don't write until the last line is done... this may
- // or may not be the write thing to do, but it's the easiest.
- if (b->bufferPos > 0 && b->atFront) {
- struct iovec vec;
- vec.iov_base = b->buffer;
- vec.iov_len = b->bufferPos;
- writeLines(vec, 1);
- b->restart();
- }
- }
-}
-
-BufferedTextOutput::BufferState* BufferedTextOutput::getBuffer() const
-{
- if ((mFlags&MULTITHREADED) != 0) {
- ThreadState* ts = getThreadState();
- if (ts) {
- while (ts->states.size() <= (size_t)mIndex) ts->states.add(NULL);
- BufferState* bs = ts->states[mIndex].get();
- if (bs != NULL && bs->seq == mSeq) return bs;
-
- ts->states.editItemAt(mIndex) = new BufferState(mIndex);
- bs = ts->states[mIndex].get();
- if (bs != NULL) return bs;
- }
- }
-
- return mGlobalState;
-}
-
-}; // namespace android
generated by cgit v1.1 at 2024-12-27 22:23:27 +0000