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authorThe Android Open Source Project <initial-contribution@android.com>2009-03-03 18:29:04 -0800
committerThe Android Open Source Project <initial-contribution@android.com>2009-03-03 18:29:04 -0800
commite54eebbf1a908d65ee8cf80bab62821c05666d70 (patch)
tree4b825dc642cb6eb9a060e54bf8d69288fbee4904 /libpixelflinger/tinyutils/SharedBuffer.cpp
parenta1e1c1b106423de09bc918502e7a51d4ffe5a4ae (diff)
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auto import from //depot/cupcake/@135843
Diffstat (limited to 'libpixelflinger/tinyutils/SharedBuffer.cpp')
-rw-r--r--libpixelflinger/tinyutils/SharedBuffer.cpp106
1 files changed, 0 insertions, 106 deletions
diff --git a/libpixelflinger/tinyutils/SharedBuffer.cpp b/libpixelflinger/tinyutils/SharedBuffer.cpp
deleted file mode 100644
index ef781a7..0000000
--- a/libpixelflinger/tinyutils/SharedBuffer.cpp
+++ /dev/null
@@ -1,106 +0,0 @@
-/*
- * SharedBuffer.cpp
- * Android
- *
- * Copyright 2005 The Android Open Source Project
- *
- */
-
-#include <stdlib.h>
-#include <string.h>
-
-#include <cutils/atomic.h>
-
-#include "tinyutils/SharedBuffer.h"
-
-// ---------------------------------------------------------------------------
-
-namespace android {
-
-SharedBuffer* SharedBuffer::alloc(size_t size)
-{
- SharedBuffer* sb = static_cast<SharedBuffer *>(malloc(sizeof(SharedBuffer) + size));
- if (sb) {
- sb->mRefs = 1;
- sb->mSize = size;
- }
- return sb;
-}
-
-
-ssize_t SharedBuffer::dealloc(const SharedBuffer* released)
-{
- if (released->mRefs != 0) return -1; // XXX: invalid operation
- free(const_cast<SharedBuffer*>(released));
- return 0;
-}
-
-SharedBuffer* SharedBuffer::edit() const
-{
- if (onlyOwner()) {
- return const_cast<SharedBuffer*>(this);
- }
- SharedBuffer* sb = alloc(mSize);
- if (sb) {
- memcpy(sb->data(), data(), size());
- release();
- }
- return sb;
-}
-
-SharedBuffer* SharedBuffer::editResize(size_t newSize) const
-{
- if (onlyOwner()) {
- SharedBuffer* buf = const_cast<SharedBuffer*>(this);
- if (buf->mSize == newSize) return buf;
- buf = (SharedBuffer*)realloc(buf, sizeof(SharedBuffer) + newSize);
- if (buf != NULL) {
- buf->mSize = newSize;
- return buf;
- }
- }
- SharedBuffer* sb = alloc(newSize);
- if (sb) {
- const size_t mySize = mSize;
- memcpy(sb->data(), data(), newSize < mySize ? newSize : mySize);
- release();
- }
- return sb;
-}
-
-SharedBuffer* SharedBuffer::attemptEdit() const
-{
- if (onlyOwner()) {
- return const_cast<SharedBuffer*>(this);
- }
- return 0;
-}
-
-SharedBuffer* SharedBuffer::reset(size_t new_size) const
-{
- // cheap-o-reset.
- SharedBuffer* sb = alloc(new_size);
- if (sb) {
- release();
- }
- return sb;
-}
-
-void SharedBuffer::acquire() const {
- android_atomic_inc(&mRefs);
-}
-
-int32_t SharedBuffer::release(uint32_t flags) const
-{
- int32_t prev = 1;
- if (onlyOwner() || ((prev = android_atomic_dec(&mRefs)) == 1)) {
- mRefs = 0;
- if ((flags & eKeepStorage) == 0) {
- free(const_cast<SharedBuffer*>(this));
- }
- }
- return prev;
-}
-
-
-}; // namespace android