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/*
**
** Copyright 2009, 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 "GraphicBufferAllocator"
#define ATRACE_TAG ATRACE_TAG_GRAPHICS
#include <cutils/log.h>
#include <utils/Singleton.h>
#include <utils/String8.h>
#include <utils/Trace.h>
#include <ui/GraphicBufferAllocator.h>
namespace android {
// ---------------------------------------------------------------------------
ANDROID_SINGLETON_STATIC_INSTANCE( GraphicBufferAllocator )
Mutex GraphicBufferAllocator::sLock;
KeyedVector<buffer_handle_t,
GraphicBufferAllocator::alloc_rec_t> GraphicBufferAllocator::sAllocList;
GraphicBufferAllocator::GraphicBufferAllocator()
: mAllocDev(0)
{
hw_module_t const* module;
int err = hw_get_module(GRALLOC_HARDWARE_MODULE_ID, &module);
ALOGE_IF(err, "FATAL: can't find the %s module", GRALLOC_HARDWARE_MODULE_ID);
if (err == 0) {
gralloc_open(module, &mAllocDev);
}
}
GraphicBufferAllocator::~GraphicBufferAllocator()
{
gralloc_close(mAllocDev);
}
void GraphicBufferAllocator::dump(String8& result) const
{
Mutex::Autolock _l(sLock);
KeyedVector<buffer_handle_t, alloc_rec_t>& list(sAllocList);
size_t total = 0;
const size_t SIZE = 4096;
char buffer[SIZE];
snprintf(buffer, SIZE, "Allocated buffers:\n");
result.append(buffer);
const size_t c = list.size();
for (size_t i=0 ; i<c ; i++) {
const alloc_rec_t& rec(list.valueAt(i));
if (rec.size) {
snprintf(buffer, SIZE, "%10p: %7.2f KiB | %4u (%4u) x %4u | %8X | 0x%08x\n",
list.keyAt(i), rec.size/1024.0f,
rec.w, rec.s, rec.h, rec.format, rec.usage);
} else {
snprintf(buffer, SIZE, "%10p: unknown | %4u (%4u) x %4u | %8X | 0x%08x\n",
list.keyAt(i),
rec.w, rec.s, rec.h, rec.format, rec.usage);
}
result.append(buffer);
total += rec.size;
}
snprintf(buffer, SIZE, "Total allocated (estimate): %.2f KB\n", total/1024.0f);
result.append(buffer);
if (mAllocDev->common.version >= 1 && mAllocDev->dump) {
mAllocDev->dump(mAllocDev, buffer, SIZE);
result.append(buffer);
}
}
void GraphicBufferAllocator::dumpToSystemLog()
{
String8 s;
GraphicBufferAllocator::getInstance().dump(s);
ALOGD("%s", s.string());
}
status_t GraphicBufferAllocator::alloc(uint32_t w, uint32_t h, PixelFormat format,
int usage, buffer_handle_t* handle, int32_t* stride)
{
ATRACE_CALL();
// make sure to not allocate a N x 0 or 0 x N buffer, since this is
// allowed from an API stand-point allocate a 1x1 buffer instead.
if (!w || !h)
w = h = 1;
// we have a h/w allocator and h/w buffer is requested
status_t err;
err = mAllocDev->alloc(mAllocDev, w, h, format, usage, handle, stride);
ALOGW_IF(err, "alloc(%u, %u, %d, %08x, ...) failed %d (%s)",
w, h, format, usage, err, strerror(-err));
if (err == NO_ERROR) {
Mutex::Autolock _l(sLock);
KeyedVector<buffer_handle_t, alloc_rec_t>& list(sAllocList);
int bpp = bytesPerPixel(format);
if (bpp < 0) {
// probably a HAL custom format. in any case, we don't know
// what its pixel size is.
bpp = 0;
}
alloc_rec_t rec;
rec.w = w;
rec.h = h;
rec.s = *stride;
rec.format = format;
rec.usage = usage;
rec.size = h * stride[0] * bpp;
list.add(*handle, rec);
}
return err;
}
class BufferLiberatorThread : public Thread {
public:
static void queueCaptiveBuffer(buffer_handle_t handle) {
static sp<BufferLiberatorThread> thread(new BufferLiberatorThread);
static bool running = false;
if (!running) {
thread->run("BufferLiberator");
running = true;
}
{
Mutex::Autolock lock(thread->mMutex);
thread->mQueue.push_back(handle);
thread->mCondition.signal();
}
}
private:
BufferLiberatorThread() {}
virtual bool threadLoop() {
buffer_handle_t handle;
{
Mutex::Autolock lock(mMutex);
while (mQueue.isEmpty()) {
mCondition.wait(mMutex);
}
handle = mQueue[0];
mQueue.removeAt(0);
}
status_t err;
GraphicBufferAllocator& gba(GraphicBufferAllocator::get());
{ // Scope for tracing
ATRACE_NAME("gralloc::free");
err = gba.mAllocDev->free(gba.mAllocDev, handle);
}
ALOGW_IF(err, "free(...) failed %d (%s)", err, strerror(-err));
if (err == NO_ERROR) {
Mutex::Autolock _l(GraphicBufferAllocator::sLock);
KeyedVector<buffer_handle_t, GraphicBufferAllocator::alloc_rec_t>&
list(GraphicBufferAllocator::sAllocList);
list.removeItem(handle);
}
return true;
}
Vector<buffer_handle_t> mQueue;
Condition mCondition;
Mutex mMutex;
};
status_t GraphicBufferAllocator::free(buffer_handle_t handle)
{
BufferLiberatorThread::queueCaptiveBuffer(handle);
return NO_ERROR;
}
// ---------------------------------------------------------------------------
}; // namespace android
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