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-rw-r--r--libs/utils/MemoryHeapBase.cpp183
1 files changed, 0 insertions, 183 deletions
diff --git a/libs/utils/MemoryHeapBase.cpp b/libs/utils/MemoryHeapBase.cpp
deleted file mode 100644
index 8251728..0000000
--- a/libs/utils/MemoryHeapBase.cpp
+++ /dev/null
@@ -1,183 +0,0 @@
-/*
- * Copyright (C) 2008 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.
- */
-
-#define LOG_TAG "MemoryHeapBase"
-
-#include <stdlib.h>
-#include <stdint.h>
-#include <unistd.h>
-#include <fcntl.h>
-#include <errno.h>
-#include <sys/types.h>
-#include <sys/stat.h>
-#include <sys/ioctl.h>
-
-#include <cutils/log.h>
-#include <cutils/ashmem.h>
-#include <cutils/atomic.h>
-
-#include <utils/MemoryHeapBase.h>
-
-#if HAVE_ANDROID_OS
-#include <linux/android_pmem.h>
-#endif
-
-
-namespace android {
-
-// ---------------------------------------------------------------------------
-
-MemoryHeapBase::MemoryHeapBase()
- : mFD(-1), mSize(0), mBase(MAP_FAILED),
- mDevice(NULL), mNeedUnmap(false)
-{
-}
-
-MemoryHeapBase::MemoryHeapBase(size_t size, uint32_t flags, char const * name)
- : mFD(-1), mSize(0), mBase(MAP_FAILED), mFlags(flags),
- mDevice(0), mNeedUnmap(false)
-{
- const size_t pagesize = getpagesize();
- size = ((size + pagesize-1) & ~(pagesize-1));
- int fd = ashmem_create_region(name == NULL ? "MemoryHeapBase" : name, size);
- LOGE_IF(fd<0, "error creating ashmem region: %s", strerror(errno));
- if (fd >= 0) {
- if (mapfd(fd, size) == NO_ERROR) {
- if (flags & READ_ONLY) {
- ashmem_set_prot_region(fd, PROT_READ);
- }
- }
- }
-}
-
-MemoryHeapBase::MemoryHeapBase(const char* device, size_t size, uint32_t flags)
- : mFD(-1), mSize(0), mBase(MAP_FAILED), mFlags(flags),
- mDevice(0), mNeedUnmap(false)
-{
- int fd = open(device, O_RDWR);
- LOGE_IF(fd<0, "error opening %s: %s", device, strerror(errno));
- if (fd >= 0) {
- const size_t pagesize = getpagesize();
- size = ((size + pagesize-1) & ~(pagesize-1));
- if (mapfd(fd, size) == NO_ERROR) {
- mDevice = device;
- }
- }
-}
-
-MemoryHeapBase::MemoryHeapBase(int fd, size_t size, uint32_t flags)
- : mFD(-1), mSize(0), mBase(MAP_FAILED), mFlags(flags),
- mDevice(0), mNeedUnmap(false)
-{
- const size_t pagesize = getpagesize();
- size = ((size + pagesize-1) & ~(pagesize-1));
- mapfd(dup(fd), size);
-}
-
-status_t MemoryHeapBase::init(int fd, void *base, int size, int flags, const char* device)
-{
- if (mFD != -1) {
- return INVALID_OPERATION;
- }
- mFD = fd;
- mBase = base;
- mSize = size;
- mFlags = flags;
- mDevice = device;
- return NO_ERROR;
-}
-
-status_t MemoryHeapBase::mapfd(int fd, size_t size)
-{
- if (size == 0) {
- // try to figure out the size automatically
-#if HAVE_ANDROID_OS
- // first try the PMEM ioctl
- pmem_region reg;
- int err = ioctl(fd, PMEM_GET_TOTAL_SIZE, &reg);
- if (err == 0)
- size = reg.len;
-#endif
- if (size == 0) { // try fstat
- struct stat sb;
- if (fstat(fd, &sb) == 0)
- size = sb.st_size;
- }
- // if it didn't work, let mmap() fail.
- }
-
- if ((mFlags & DONT_MAP_LOCALLY) == 0) {
- void* base = (uint8_t*)mmap(0, size,
- PROT_READ|PROT_WRITE, MAP_SHARED, fd, 0);
- if (base == MAP_FAILED) {
- LOGE("mmap(fd=%d, size=%u) failed (%s)",
- fd, uint32_t(size), strerror(errno));
- close(fd);
- return -errno;
- }
- //LOGD("mmap(fd=%d, base=%p, size=%lu)", fd, base, size);
- mBase = base;
- mNeedUnmap = true;
- } else {
- mBase = 0; // not MAP_FAILED
- mNeedUnmap = false;
- }
- mFD = fd;
- mSize = size;
- return NO_ERROR;
-}
-
-MemoryHeapBase::~MemoryHeapBase()
-{
- dispose();
-}
-
-void MemoryHeapBase::dispose()
-{
- int fd = android_atomic_or(-1, &mFD);
- if (fd >= 0) {
- if (mNeedUnmap) {
- //LOGD("munmap(fd=%d, base=%p, size=%lu)", fd, mBase, mSize);
- munmap(mBase, mSize);
- }
- mBase = 0;
- mSize = 0;
- close(fd);
- }
-}
-
-int MemoryHeapBase::getHeapID() const {
- return mFD;
-}
-
-void* MemoryHeapBase::getBase() const {
- return mBase;
-}
-
-size_t MemoryHeapBase::getSize() const {
- return mSize;
-}
-
-uint32_t MemoryHeapBase::getFlags() const {
- return mFlags;
-}
-
-const char* MemoryHeapBase::getDevice() const {
- return mDevice;
-}
-
-// ---------------------------------------------------------------------------
-}; // namespace android