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class VkEncoder::Impl {
public:
Impl(IOStream* stream) : m_stream(stream), m_logEncodes(false) {
m_stream.incStreamRef();
const char* emuVkLogEncodesPropName = "qemu.vk.log";
char encodeProp[PROPERTY_VALUE_MAX];
if (property_get(emuVkLogEncodesPropName, encodeProp, nullptr) > 0) {
m_logEncodes = atoi(encodeProp) > 0;
}
}
~Impl() {
m_stream.decStreamRef();
}
VulkanCountingStream* countingStream() { return &m_countingStream; }
VulkanStreamGuest* stream() { return &m_stream; }
Pool* pool() { return &m_pool; }
ResourceTracker* resources() { return ResourceTracker::get(); }
Validation* validation() { return &m_validation; }
void log(const char* text) {
if (!m_logEncodes) return;
ALOGD("encoder log: %s", text);
}
void flush() {
lock();
m_stream.flush();
unlock();
}
// can be recursive
void lock() {
if (this == sAcquiredEncoderThreadLocal) {
++sAcquiredEncoderThreadLockLevels;
return; // recursive
}
while (mLock.test_and_set(std::memory_order_acquire));
sAcquiredEncoderThreadLocal = this;
sAcquiredEncoderThreadLockLevels = 1;
}
void unlock() {
if (this != sAcquiredEncoderThreadLocal) {
// error, trying to unlock without having locked first
return;
}
--sAcquiredEncoderThreadLockLevels;
if (0 == sAcquiredEncoderThreadLockLevels) {
mLock.clear(std::memory_order_release);
sAcquiredEncoderThreadLocal = nullptr;
}
}
void incRef() {
__atomic_add_fetch(&m_refCount, 1, __ATOMIC_SEQ_CST);
}
bool decRef() {
if (0 == __atomic_sub_fetch(&m_refCount, 1, __ATOMIC_SEQ_CST)) {
return true;
}
return false;
}
private:
VulkanCountingStream m_countingStream;
VulkanStreamGuest m_stream;
Pool m_pool { 8, 4096, 64 };
Validation m_validation;
bool m_logEncodes;
std::atomic_flag mLock = ATOMIC_FLAG_INIT;
static thread_local Impl* sAcquiredEncoderThreadLocal;
static thread_local uint32_t sAcquiredEncoderThreadLockLevels;
uint32_t m_refCount = 1;
};
VkEncoder::~VkEncoder() { }
// static
thread_local VkEncoder::Impl* VkEncoder::Impl::sAcquiredEncoderThreadLocal = nullptr;
thread_local uint32_t VkEncoder::Impl::sAcquiredEncoderThreadLockLevels = 0;
struct EncoderAutoLock {
EncoderAutoLock(VkEncoder* enc) : mEnc(enc) {
mEnc->lock();
}
~EncoderAutoLock() {
mEnc->unlock();
}
VkEncoder* mEnc;
};
VkEncoder::VkEncoder(IOStream *stream) :
mImpl(new VkEncoder::Impl(stream)) { }
void VkEncoder::flush() {
mImpl->flush();
}
void VkEncoder::lock() {
mImpl->lock();
}
void VkEncoder::unlock() {
mImpl->unlock();
}
void VkEncoder::incRef() {
mImpl->incRef();
}
bool VkEncoder::decRef() {
if (mImpl->decRef()) {
delete this;
return true;
}
return false;
}
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