libvulkan: Discover layer libraries in entire search path (1a7eb59c) · Commits · e / os / platform_frameworks_native

vulkan/libvulkan/Android.mk

+2 −1

Original line number	Original line	Diff line number	Diff line
	@@ -49,7 +49,8 @@ LOCAL_SRC_FILES := \
	vulkan_loader_data.cpp		vulkan_loader_data.cpp
	LOCAL_ADDITIONAL_DEPENDENCIES := $(LOCAL_PATH)/Android.mk		LOCAL_ADDITIONAL_DEPENDENCIES := $(LOCAL_PATH)/Android.mk

	LOCAL_SHARED_LIBRARIES := libhardware liblog libsync libutils libcutils		LOCAL_STATIC_LIBRARIES := libziparchive
			LOCAL_SHARED_LIBRARIES := libhardware libsync libbase liblog libutils libcutils libz

	LOCAL_MODULE := libvulkan		LOCAL_MODULE := libvulkan
	include $(BUILD_SHARED_LIBRARY)		include $(BUILD_SHARED_LIBRARY)

vulkan/libvulkan/layers_extensions.cpp

+104 −52

Original line number	Original line	Diff line number	Diff line
	@@ -14,9 +14,8 @@
	* limitations under the License.		* limitations under the License.
	*/		*/

	// #define LOG_NDEBUG 0

	#include "layers_extensions.h"		#include "layers_extensions.h"

	#include <alloca.h>		#include <alloca.h>
	#include <dirent.h>		#include <dirent.h>
	#include <dlfcn.h>		#include <dlfcn.h>
	@@ -25,7 +24,12 @@
	#include <string>		#include <string>
	#include <string.h>		#include <string.h>
	#include <vector>		#include <vector>

			#include <android-base/strings.h>
			#include <cutils/properties.h>
	#include <log/log.h>		#include <log/log.h>
			#include <ziparchive/zip_archive.h>

	#include <vulkan/vulkan_loader_data.h>		#include <vulkan/vulkan_loader_data.h>

	// TODO(jessehall): The whole way we deal with extensions is pretty hokey, and		// TODO(jessehall): The whole way we deal with extensions is pretty hokey, and
	@@ -59,6 +63,8 @@ struct Layer {

	namespace {		namespace {

			const char kSystemLayerLibraryDir[] = "/data/local/debug/vulkan";

	class LayerLibrary {		class LayerLibrary {
	public:		public:
	LayerLibrary(const std::string& path)		LayerLibrary(const std::string& path)
	@@ -96,10 +102,9 @@ class LayerLibrary {

	bool LayerLibrary::Open() {		bool LayerLibrary::Open() {
	std::lock_guard<std::mutex> lock(mutex_);		std::lock_guard<std::mutex> lock(mutex_);

	if (refcount_++ == 0) {		if (refcount_++ == 0) {
			ALOGV("opening layer library '%s'", path_.c_str());
	dlhandle_ = dlopen(path_.c_str(), RTLD_NOW \| RTLD_LOCAL);		dlhandle_ = dlopen(path_.c_str(), RTLD_NOW \| RTLD_LOCAL);
	ALOGV("Opening library %s", path_.c_str());
	if (!dlhandle_) {		if (!dlhandle_) {
	ALOGE("failed to load layer library '%s': %s", path_.c_str(),		ALOGE("failed to load layer library '%s': %s", path_.c_str(),
	dlerror());		dlerror());
	@@ -107,19 +112,16 @@ bool LayerLibrary::Open() {
	return false;		return false;
	}		}
	}		}
	ALOGV("Refcount on activate is %zu", refcount_);
	return true;		return true;
	}		}

	void LayerLibrary::Close() {		void LayerLibrary::Close() {
	std::lock_guard<std::mutex> lock(mutex_);		std::lock_guard<std::mutex> lock(mutex_);

	if (--refcount_ == 0) {		if (--refcount_ == 0) {
	ALOGV("Closing library %s", path_.c_str());		ALOGV("closing layer library '%s'", path_.c_str());
	dlclose(dlhandle_);		dlclose(dlhandle_);
	dlhandle_ = nullptr;		dlhandle_ = nullptr;
	}		}
	ALOGV("Refcount on destruction is %zu", refcount_);
	}		}

	bool LayerLibrary::EnumerateLayers(size_t library_idx,		bool LayerLibrary::EnumerateLayers(size_t library_idx,
	@@ -131,7 +133,7 @@ bool LayerLibrary::EnumerateLayers(size_t library_idx,
	reinterpret_cast<PFN_vkEnumerateInstanceExtensionProperties>(		reinterpret_cast<PFN_vkEnumerateInstanceExtensionProperties>(
	dlsym(dlhandle_, "vkEnumerateInstanceExtensionProperties"));		dlsym(dlhandle_, "vkEnumerateInstanceExtensionProperties"));
	if (!enumerate_instance_layers \|\| !enumerate_instance_extensions) {		if (!enumerate_instance_layers \|\| !enumerate_instance_extensions) {
	ALOGV("layer library '%s' misses some instance enumeraion functions",		ALOGE("layer library '%s' missing some instance enumeration functions",
	path_.c_str());		path_.c_str());
	return false;		return false;
	}		}
	@@ -150,7 +152,7 @@ bool LayerLibrary::EnumerateLayers(size_t library_idx,
	VkResult result = enumerate_instance_layers(&num_instance_layers, nullptr);		VkResult result = enumerate_instance_layers(&num_instance_layers, nullptr);
	if (result != VK_SUCCESS \|\| !num_instance_layers) {		if (result != VK_SUCCESS \|\| !num_instance_layers) {
	if (result != VK_SUCCESS) {		if (result != VK_SUCCESS) {
	ALOGW(		ALOGE(
	"vkEnumerateInstanceLayerProperties failed for library '%s': "		"vkEnumerateInstanceLayerProperties failed for library '%s': "
	"%d",		"%d",
	path_.c_str(), result);		path_.c_str(), result);
	@@ -161,7 +163,7 @@ bool LayerLibrary::EnumerateLayers(size_t library_idx,
	result = enumerate_device_layers(VK_NULL_HANDLE, &num_device_layers,		result = enumerate_device_layers(VK_NULL_HANDLE, &num_device_layers,
	nullptr);		nullptr);
	if (result != VK_SUCCESS) {		if (result != VK_SUCCESS) {
	ALOGW(		ALOGE(
	"vkEnumerateDeviceLayerProperties failed for library '%s': %d",		"vkEnumerateDeviceLayerProperties failed for library '%s': %d",
	path_.c_str(), result);		path_.c_str(), result);
	return false;		return false;
	@@ -173,7 +175,7 @@ bool LayerLibrary::EnumerateLayers(size_t library_idx,
	(num_instance_layers + num_device_layers) * sizeof(VkLayerProperties)));		(num_instance_layers + num_device_layers) * sizeof(VkLayerProperties)));
	result = enumerate_instance_layers(&num_instance_layers, properties);		result = enumerate_instance_layers(&num_instance_layers, properties);
	if (result != VK_SUCCESS) {		if (result != VK_SUCCESS) {
	ALOGW("vkEnumerateInstanceLayerProperties failed for library '%s': %d",		ALOGE("vkEnumerateInstanceLayerProperties failed for library '%s': %d",
	path_.c_str(), result);		path_.c_str(), result);
	return false;		return false;
	}		}
	@@ -181,7 +183,7 @@ bool LayerLibrary::EnumerateLayers(size_t library_idx,
	result = enumerate_device_layers(VK_NULL_HANDLE, &num_device_layers,		result = enumerate_device_layers(VK_NULL_HANDLE, &num_device_layers,
	properties + num_instance_layers);		properties + num_instance_layers);
	if (result != VK_SUCCESS) {		if (result != VK_SUCCESS) {
	ALOGW(		ALOGE(
	"vkEnumerateDeviceLayerProperties failed for library '%s': %d",		"vkEnumerateDeviceLayerProperties failed for library '%s': %d",
	path_.c_str(), result);		path_.c_str(), result);
	return false;		return false;
	@@ -203,9 +205,9 @@ bool LayerLibrary::EnumerateLayers(size_t library_idx,
	result =		result =
	enumerate_instance_extensions(props.layerName, &count, nullptr);		enumerate_instance_extensions(props.layerName, &count, nullptr);
	if (result != VK_SUCCESS) {		if (result != VK_SUCCESS) {
	ALOGW(		ALOGE(
	"vkEnumerateInstanceExtensionProperties(%s) failed for library "		"vkEnumerateInstanceExtensionProperties(\"%s\") failed for "
	"'%s': %d",		"library '%s': %d",
	props.layerName, path_.c_str(), result);		props.layerName, path_.c_str(), result);
	instance_layers.resize(prev_num_instance_layers);		instance_layers.resize(prev_num_instance_layers);
	return false;		return false;
	@@ -214,9 +216,9 @@ bool LayerLibrary::EnumerateLayers(size_t library_idx,
	result = enumerate_instance_extensions(		result = enumerate_instance_extensions(
	props.layerName, &count, layer.instance_extensions.data());		props.layerName, &count, layer.instance_extensions.data());
	if (result != VK_SUCCESS) {		if (result != VK_SUCCESS) {
	ALOGW(		ALOGE(
	"vkEnumerateInstanceExtensionProperties(%s) failed for library "		"vkEnumerateInstanceExtensionProperties(\"%s\") failed for "
	"'%s': %d",		"library '%s': %d",
	props.layerName, path_.c_str(), result);		props.layerName, path_.c_str(), result);
	instance_layers.resize(prev_num_instance_layers);		instance_layers.resize(prev_num_instance_layers);
	return false;		return false;
	@@ -234,8 +236,8 @@ bool LayerLibrary::EnumerateLayers(size_t library_idx,
	result = enumerate_device_extensions(		result = enumerate_device_extensions(
	VK_NULL_HANDLE, props.layerName, &count, nullptr);		VK_NULL_HANDLE, props.layerName, &count, nullptr);
	if (result != VK_SUCCESS) {		if (result != VK_SUCCESS) {
	ALOGW(		ALOGE(
	"vkEnumerateDeviceExtensionProperties(%s) failed for "		"vkEnumerateDeviceExtensionProperties(\"%s\") failed for "
	"library '%s': %d",		"library '%s': %d",
	props.layerName, path_.c_str(), result);		props.layerName, path_.c_str(), result);
	instance_layers.resize(prev_num_instance_layers);		instance_layers.resize(prev_num_instance_layers);
	@@ -246,8 +248,8 @@ bool LayerLibrary::EnumerateLayers(size_t library_idx,
	VK_NULL_HANDLE, props.layerName, &count,		VK_NULL_HANDLE, props.layerName, &count,
	layer.device_extensions.data());		layer.device_extensions.data());
	if (result != VK_SUCCESS) {		if (result != VK_SUCCESS) {
	ALOGW(		ALOGE(
	"vkEnumerateDeviceExtensionProperties(%s) failed for "		"vkEnumerateDeviceExtensionProperties(\"%s\") failed for "
	"library '%s': %d",		"library '%s': %d",
	props.layerName, path_.c_str(), result);		props.layerName, path_.c_str(), result);
	instance_layers.resize(prev_num_instance_layers);		instance_layers.resize(prev_num_instance_layers);
	@@ -256,8 +258,9 @@ bool LayerLibrary::EnumerateLayers(size_t library_idx,
	}		}

	instance_layers.push_back(layer);		instance_layers.push_back(layer);
	ALOGV(" added %s layer '%s'",		ALOGD("added %s layer '%s' from library '%s'",
	(layer.is_global) ? "global" : "instance", props.layerName);		(layer.is_global) ? "global" : "instance", props.layerName,
			path_.c_str());
	}		}

	return true;		return true;
	@@ -280,12 +283,12 @@ void* LayerLibrary::GetGPA(const Layer& layer,
	return gpa;		return gpa;
	}		}

			// ----------------------------------------------------------------------------

	std::vector<LayerLibrary> g_layer_libraries;		std::vector<LayerLibrary> g_layer_libraries;
	std::vector<Layer> g_instance_layers;		std::vector<Layer> g_instance_layers;

	void AddLayerLibrary(const std::string& path) {		void AddLayerLibrary(const std::string& path) {
	ALOGV("examining layer library '%s'", path.c_str());

	LayerLibrary library(path);		LayerLibrary library(path);
	if (!library.Open())		if (!library.Open())
	return;		return;
	@@ -300,34 +303,81 @@ void AddLayerLibrary(const std::string& path) {
	g_layer_libraries.emplace_back(std::move(library));		g_layer_libraries.emplace_back(std::move(library));
	}		}

	void DiscoverLayersInDirectory(const std::string& dir_path) {		template <typename Functor>
	ALOGV("looking for layers in '%s'", dir_path.c_str());		void ForEachFileInDir(const std::string& dirname, Functor functor) {
			auto dir_deleter = [](DIR* handle) { closedir(handle); };
	DIR* directory = opendir(dir_path.c_str());		std::unique_ptr<DIR, decltype(dir_deleter)> dir(opendir(dirname.c_str()),
	if (!directory) {		dir_deleter);
			if (!dir) {
			// It's normal for some search directories to not exist, especially
			// /data/local/debug/vulkan.
	int err = errno;		int err = errno;
	ALOGV_IF(err != ENOENT, "failed to open layer directory '%s': %s (%d)",		ALOGW_IF(err != ENOENT, "failed to open layer directory '%s': %s",
	dir_path.c_str(), strerror(err), err);		dirname.c_str(), strerror(err));
	return;		return;
	}		}
			ALOGD("searching for layers in '%s'", dirname.c_str());
	std::string path;		dirent* entry;
	path.reserve(dir_path.size() + 20);		while ((entry = readdir(dir.get())) != nullptr)
	path.append(dir_path);		functor(entry->d_name);
	path.append("/");

	struct dirent* entry;
	while ((entry = readdir(directory))) {
	size_t libname_len = strlen(entry->d_name);
	if (strncmp(entry->d_name, "libVkLayer", 10) != 0 \|\|
	strncmp(entry->d_name + libname_len - 3, ".so", 3) != 0)
	continue;
	path.append(entry->d_name);
	AddLayerLibrary(path);
	path.resize(dir_path.size() + 1);
	}		}

	closedir(directory);		template <typename Functor>
			void ForEachFileInZip(const std::string& zipname,
			const std::string& dir_in_zip,
			Functor functor) {
			int32_t err;
			ZipArchiveHandle zip = nullptr;
			if ((err = OpenArchive(zipname.c_str(), &zip)) != 0) {
			ALOGE("failed to open apk '%s': %d", zipname.c_str(), err);
			return;
			}
			std::string prefix(dir_in_zip + "/");
			const ZipString prefix_str(prefix.c_str());
			void* iter_cookie = nullptr;
			if ((err = StartIteration(zip, &iter_cookie, &prefix_str, nullptr)) != 0) {
			ALOGE("failed to iterate entries in apk '%s': %d", zipname.c_str(),
			err);
			CloseArchive(zip);
			return;
			}
			ALOGD("searching for layers in '%s!/%s'", zipname.c_str(),
			dir_in_zip.c_str());
			ZipEntry entry;
			ZipString name;
			while (Next(iter_cookie, &entry, &name) == 0) {
			std::string filename(
			reinterpret_cast<const char*>(name.name) + prefix.length(),
			name.name_length - prefix.length());
			// only enumerate direct entries of the directory, not subdirectories
			if (filename.find('/') == filename.npos)
			functor(filename);
			}
			EndIteration(iter_cookie);
			CloseArchive(zip);
			}

			template <typename Functor>
			void ForEachFileInPath(const std::string& path, Functor functor) {
			size_t zip_pos = path.find("!/");
			if (zip_pos == std::string::npos) {
			ForEachFileInDir(path, functor);
			} else {
			ForEachFileInZip(path.substr(0, zip_pos), path.substr(zip_pos + 2),
			functor);
			}
			}

			void DiscoverLayersInPathList(const std::string& pathstr) {
			std::vector<std::string> paths = android::base::Split(pathstr, ":");
			for (const auto& path : paths) {
			ForEachFileInPath(path, [&](const std::string& filename) {
			if (android::base::StartsWith(filename, "libVkLayer") &&
			android::base::EndsWith(filename, ".so")) {
			AddLayerLibrary(path + "/" + filename);
			}
			});
			}
	}		}

	const VkExtensionProperties* FindExtension(		const VkExtensionProperties* FindExtension(
	@@ -350,10 +400,12 @@ void* GetLayerGetProcAddr(const Layer& layer,
	} // anonymous namespace		} // anonymous namespace

	void DiscoverLayers() {		void DiscoverLayers() {
	if (prctl(PR_GET_DUMPABLE, 0, 0, 0, 0))		if (property_get_bool("ro.debuggable", false) &&
	DiscoverLayersInDirectory("/data/local/debug/vulkan");		prctl(PR_GET_DUMPABLE, 0, 0, 0, 0)) {
			DiscoverLayersInPathList(kSystemLayerLibraryDir);
			}
	if (!LoaderData::GetInstance().layer_path.empty())		if (!LoaderData::GetInstance().layer_path.empty())
	DiscoverLayersInDirectory(LoaderData::GetInstance().layer_path.c_str());		DiscoverLayersInPathList(LoaderData::GetInstance().layer_path);
	}		}

	uint32_t GetLayerCount() {		uint32_t GetLayerCount() {