am 3cb007e4: am 911263dc: Merge changes I18e5e789,I5cbaae2d into ics-mr1 (2ea88290) · Commits · e / os / android_frameworks_native

opengl/include/EGL/eglext.h

+15 −0

Original line number	Diff line number	Diff line
		@@ -256,6 +256,21 @@ typedef EGLuint64NV (EGLAPIENTRYP PFNEGLGETSYSTEMTIMEFREQUENCYNVPROC)(void);
		typedef EGLuint64NV (EGLAPIENTRYP PFNEGLGETSYSTEMTIMENVPROC)(void);
		#endif


		/* EGL_ANDROID_blob_cache
		*/
		#ifndef EGL_ANDROID_blob_cache
		#define EGL_ANDROID_blob_cache 1
		typedef khronos_ssize_t EGLsizei;
		typedef void (EGLSetBlobFunc) (const void key, EGLsizei keySize, const void* value, EGLsizei valueSize);
		typedef EGLsizei (EGLGetBlobFunc) (const void key, EGLsizei keySize, void* value, EGLsizei valueSize);
		#ifdef EGL_EGLEXT_PROTOTYPES
		EGLAPI void EGLAPIENTRY eglSetBlobCacheFuncs(EGLDisplay dpy, EGLSetBlobFunc set, EGLGetBlobFunc get);
		#endif /* EGL_EGLEXT_PROTOTYPES */
		typedef void (EGLAPIENTRYP PFNEGLSETBLOBCACHEFUNCSPROC) (EGLDisplay dpy,
		EGLSetBlobFunc set, EGLGetBlobFunc get);
		#endif

		#ifdef __cplusplus
		}
		#endif

opengl/libs/EGL/egl_cache.cpp

+238 −18

Original line number	Diff line number	Diff line
		@@ -19,6 +19,21 @@
		#include "egl_impl.h"
		#include "egldefs.h"

		#include <fcntl.h>
		#include <sys/mman.h>
		#include <sys/stat.h>
		#include <sys/types.h>
		#include <unistd.h>

		// Cache size limits.
		static const size_t maxKeySize = 1024;
		static const size_t maxValueSize = 4096;
		static const size_t maxTotalSize = 64 * 1024;

		// Cache file header
		static const char* cacheFileMagic = "EGL$";
		static const size_t cacheFileHeaderSize = 8;

		// ----------------------------------------------------------------------------
		namespace android {
		// ----------------------------------------------------------------------------
		@@ -26,37 +41,37 @@ namespace android {
		#define BC_EXT_STR "EGL_ANDROID_blob_cache"

		//
		// EGL_ANDROID_blob_cache types and functions
		// Callback functions passed to EGL.
		//
		typedef khronos_ssize_t EGLsizei;

		typedef void (EGLSetBlobFunc) (const void key, EGLsizei keySize,
		const void* value, EGLsizei valueSize);

		typedef EGLsizei (EGLGetBlobFunc) (const void key, EGLsizei keySize,
		void* value, EGLsizei valueSize);
		static void setBlob(const void* key, EGLsizei keySize, const void* value,
		EGLsizei valueSize) {
		egl_cache_t::get()->setBlob(key, keySize, value, valueSize);
		}

		typedef void (EGLAPIENTRYP PFNEGLSETBLOBCACHEFUNCSPROC) (EGLDisplay dpy,
		EGLSetBlobFunc set, EGLGetBlobFunc get);
		static EGLsizei getBlob(const void* key, EGLsizei keySize, void* value,
		EGLsizei valueSize) {
		return egl_cache_t::get()->getBlob(key, keySize, value, valueSize);
		}

		//
		// egl_cache_t definition
		//
		static void setBlob(const void* key, EGLsizei keySize, const void* value,
		EGLsizei valueSize) {
		egl_cache_t::egl_cache_t() :
		mInitialized(false),
		mBlobCache(NULL) {
		}

		static EGLsizei getBlob(const void* key, EGLsizei keySize, void* value,
		EGLsizei valueSize) {
		return 0;
		egl_cache_t::~egl_cache_t() {
		}

		egl_cache_t egl_cache_t::sCache;

		egl_cache_t* egl_cache_t::get() {
		static egl_cache_t theCache;
		return &theCache;
		return &sCache;
		}

		void egl_cache_t::initialize(egl_display_t *display) {
		Mutex::Autolock lock(mMutex);
		for (int i = 0; i < IMPL_NUM_IMPLEMENTATIONS; i++) {
		egl_connection_t* const cnx = &gEGLImpl[i];
		if (cnx->dso && cnx->major >= 0 && cnx->minor >= 0) {
		@@ -79,7 +94,8 @@ void egl_cache_t::initialize(egl_display_t *display) {
		continue;
		}

		eglSetBlobCacheFuncs(display->disp[i].dpy, setBlob, getBlob);
		eglSetBlobCacheFuncs(display->disp[i].dpy, android::setBlob,
		android::getBlob);
		EGLint err = cnx->egl.eglGetError();
		if (err != EGL_SUCCESS) {
		LOGE("eglSetBlobCacheFuncs resulted in an error: %#x",
		@@ -88,6 +104,210 @@ void egl_cache_t::initialize(egl_display_t *display) {
		}
		}
		}
		mInitialized = true;
		}

		void egl_cache_t::terminate() {
		Mutex::Autolock lock(mMutex);
		if (mBlobCache != NULL) {
		saveBlobCacheLocked();
		mBlobCache = NULL;
		}
		mInitialized = false;
		}

		void egl_cache_t::setBlob(const void* key, EGLsizei keySize, const void* value,
		EGLsizei valueSize) {
		Mutex::Autolock lock(mMutex);

		if (keySize < 0 \|\| valueSize < 0) {
		LOGW("EGL_ANDROID_blob_cache set: negative sizes are not allowed");
		return;
		}

		if (mInitialized) {
		sp<BlobCache> bc = getBlobCacheLocked();
		bc->set(key, keySize, value, valueSize);
		}
		}

		EGLsizei egl_cache_t::getBlob(const void* key, EGLsizei keySize, void* value,
		EGLsizei valueSize) {
		Mutex::Autolock lock(mMutex);

		if (keySize < 0 \|\| valueSize < 0) {
		LOGW("EGL_ANDROID_blob_cache set: negative sizes are not allowed");
		return 0;
		}

		if (mInitialized) {
		sp<BlobCache> bc = getBlobCacheLocked();
		return bc->get(key, keySize, value, valueSize);
		}
		return 0;
		}

		void egl_cache_t::setCacheFilename(const char* filename) {
		Mutex::Autolock lock(mMutex);
		mFilename = filename;
		}

		sp<BlobCache> egl_cache_t::getBlobCacheLocked() {
		if (mBlobCache == NULL) {
		mBlobCache = new BlobCache(maxKeySize, maxValueSize, maxTotalSize);
		loadBlobCacheLocked();
		}
		return mBlobCache;
		}

		static uint32_t crc32c(const uint8_t* buf, size_t len) {
		const uint32_t polyBits = 0x82F63B78;
		uint32_t r = 0;
		for (size_t i = 0; i < len; i++) {
		r ^= buf[i];
		for (int j = 0; j < 8; j++) {
		if (r & 1) {
		r = (r >> 1) ^ polyBits;
		} else {
		r >>= 1;
		}
		}
		}
		return r;
		}

		void egl_cache_t::saveBlobCacheLocked() {
		if (mFilename.length() > 0) {
		size_t cacheSize = mBlobCache->getFlattenedSize();
		size_t headerSize = cacheFileHeaderSize;
		const char* fname = mFilename.string();

		// Try to create the file with no permissions so we can write it
		// without anyone trying to read it.
		int fd = open(fname, O_CREAT \| O_EXCL \| O_RDWR, 0);
		if (fd == -1) {
		if (errno == EEXIST) {
		// The file exists, delete it and try again.
		if (unlink(fname) == -1) {
		// No point in retrying if the unlink failed.
		LOGE("error unlinking cache file %s: %s (%d)", fname,
		strerror(errno), errno);
		return;
		}
		// Retry now that we've unlinked the file.
		fd = open(fname, O_CREAT \| O_EXCL \| O_RDWR, 0);
		}
		if (fd == -1) {
		LOGE("error creating cache file %s: %s (%d)", fname,
		strerror(errno), errno);
		return;
		}
		}

		size_t fileSize = headerSize + cacheSize;
		if (ftruncate(fd, fileSize) == -1) {
		LOGE("error setting cache file size: %s (%d)", strerror(errno),
		errno);
		close(fd);
		unlink(fname);
		return;
		}

		uint8_t* buf = reinterpret_cast<uint8_t*>(mmap(NULL, fileSize,
		PROT_WRITE, MAP_SHARED, fd, 0));
		if (buf == MAP_FAILED) {
		LOGE("error mmaping cache file: %s (%d)", strerror(errno),
		errno);
		close(fd);
		unlink(fname);
		return;
		}

		status_t err = mBlobCache->flatten(buf + headerSize, cacheSize, NULL,
		0);
		if (err != OK) {
		LOGE("error writing cache contents: %s (%d)", strerror(-err),
		-err);
		munmap(buf, fileSize);
		close(fd);
		unlink(fname);
		return;
		}

		// Write the file magic and CRC
		memcpy(buf, cacheFileMagic, 4);
		uint32_t* crc = reinterpret_cast<uint32_t*>(buf + 4);
		*crc = crc32c(buf + headerSize, cacheSize);

		munmap(buf, fileSize);
		fchmod(fd, S_IRUSR);
		close(fd);
		}
		}

		void egl_cache_t::loadBlobCacheLocked() {
		if (mFilename.length() > 0) {
		size_t headerSize = cacheFileHeaderSize;

		int fd = open(mFilename.string(), O_RDONLY, 0);
		if (fd == -1) {
		if (errno != ENOENT) {
		LOGE("error opening cache file %s: %s (%d)", mFilename.string(),
		strerror(errno), errno);
		}
		return;
		}

		struct stat statBuf;
		if (fstat(fd, &statBuf) == -1) {
		LOGE("error stat'ing cache file: %s (%d)", strerror(errno), errno);
		close(fd);
		return;
		}

		// Sanity check the size before trying to mmap it.
		size_t fileSize = statBuf.st_size;
		if (fileSize > maxTotalSize * 2) {
		LOGE("cache file is too large: %#llx", statBuf.st_size);
		close(fd);
		return;
		}

		uint8_t* buf = reinterpret_cast<uint8_t*>(mmap(NULL, fileSize,
		PROT_READ, MAP_PRIVATE, fd, 0));
		if (buf == MAP_FAILED) {
		LOGE("error mmaping cache file: %s (%d)", strerror(errno),
		errno);
		close(fd);
		return;
		}

		// Check the file magic and CRC
		size_t cacheSize = fileSize - headerSize;
		if (memcmp(buf, cacheFileMagic, 4) != 0) {
		LOGE("cache file has bad mojo");
		close(fd);
		return;
		}
		uint32_t* crc = reinterpret_cast<uint32_t*>(buf + 4);
		if (crc32c(buf + headerSize, cacheSize) != *crc) {
		LOGE("cache file failed CRC check");
		close(fd);
		return;
		}

		status_t err = mBlobCache->unflatten(buf + headerSize, cacheSize, NULL, 0);
		if (err != OK) {
		LOGE("error reading cache contents: %s (%d)", strerror(-err),
		-err);
		munmap(buf, fileSize);
		close(fd);
		return;
		}

		munmap(buf, fileSize);
		close(fd);
		}
		}

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

opengl/libs/EGL/egl_cache.h

+91 −1

Original line number	Diff line number	Diff line
		@@ -14,20 +14,110 @@
		** limitations under the License.
		*/

		#ifndef ANDROID_EGL_CACHE_H
		#define ANDROID_EGL_CACHE_H

		#include <EGL/egl.h>
		#include <EGL/eglext.h>

		#include <utils/BlobCache.h>
		#include <utils/String8.h>
		#include <utils/StrongPointer.h>

		// ----------------------------------------------------------------------------
		namespace android {
		// ----------------------------------------------------------------------------

		class egl_display_t;

		class egl_cache_t {
		class EGLAPI egl_cache_t {
		public:

		// get returns a pointer to the singleton egl_cache_t object. This
		// singleton object will never be destroyed.
		static egl_cache_t* get();

		// initialize puts the egl_cache_t into an initialized state, such that it
		// is able to insert and retrieve entries from the cache. This should be
		// called when EGL is initialized. When not in the initialized state the
		// getBlob and setBlob methods will return without performing any cache
		// operations.
		void initialize(egl_display_t* display);

		// terminate puts the egl_cache_t back into the uninitialized state. When
		// in this state the getBlob and setBlob methods will return without
		// performing any cache operations.
		void terminate();

		// setBlob attempts to insert a new key/value blob pair into the cache.
		// This will be called by the hardware vendor's EGL implementation via the
		// EGL_ANDROID_blob_cache extension.
		void setBlob(const void* key, EGLsizei keySize, const void* value,
		EGLsizei valueSize);

		// getBlob attempts to retrieve the value blob associated with a given key
		// blob from cache. This will be called by the hardware vendor's EGL
		// implementation via the EGL_ANDROID_blob_cache extension.
		EGLsizei getBlob(const void* key, EGLsizei keySize, void* value,
		EGLsizei valueSize);

		// setCacheFilename sets the name of the file that should be used to store
		// cache contents from one program invocation to another.
		void setCacheFilename(const char* filename);

		private:
		// Creation and (the lack of) destruction is handled internally.
		egl_cache_t();
		~egl_cache_t();

		// Copying is disallowed.
		egl_cache_t(const egl_cache_t&); // not implemented
		void operator=(const egl_cache_t&); // not implemented

		// getBlobCacheLocked returns the BlobCache object being used to store the
		// key/value blob pairs. If the BlobCache object has not yet been created,
		// this will do so, loading the serialized cache contents from disk if
		// possible.
		sp<BlobCache> getBlobCacheLocked();

		// saveBlobCache attempts to save the current contents of mBlobCache to
		// disk.
		void saveBlobCacheLocked();

		// loadBlobCache attempts to load the saved cache contents from disk into
		// mBlobCache.
		void loadBlobCacheLocked();

		// mInitialized indicates whether the egl_cache_t is in the initialized
		// state. It is initialized to false at construction time, and gets set to
		// true when initialize is called. It is set back to false when terminate
		// is called. When in this state, the cache behaves as normal. When not,
		// the getBlob and setBlob methods will return without performing any cache
		// operations.
		bool mInitialized;

		// mBlobCache is the cache in which the key/value blob pairs are stored. It
		// is initially NULL, and will be initialized by getBlobCacheLocked the
		// first time it's needed.
		sp<BlobCache> mBlobCache;

		// mFilename is the name of the file for storing cache contents in between
		// program invocations. It is initialized to an empty string at
		// construction time, and can be set with the setCacheFilename method. An
		// empty string indicates that the cache should not be saved to or restored
		// from disk.
		String8 mFilename;

		// mMutex is the mutex used to prevent concurrent access to the member
		// variables. It must be locked whenever the member variables are accessed.
		mutable Mutex mMutex;

		// sCache is the singleton egl_cache_t object.
		static egl_cache_t sCache;
		};

		// ----------------------------------------------------------------------------
		}; // namespace android
		// ----------------------------------------------------------------------------

		#endif // ANDROID_EGL_CACHE_H

opengl/libs/EGL/egl_display.cpp

+1 −0

Original line number	Diff line number	Diff line
		@@ -44,6 +44,7 @@ egl_display_t::egl_display_t() :

		egl_display_t::~egl_display_t() {
		magic = 0;
		egl_cache_t::get()->terminate();
		}

		egl_display_t* egl_display_t::get(EGLDisplay dpy) {

opengl/libs/EGL/egl_display.h

+1 −2

Original line number	Diff line number	Diff line
		@@ -59,7 +59,7 @@ struct egl_config_t {

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

		class egl_display_t {
		class EGLAPI egl_display_t { // marked as EGLAPI for testing purposes
		static egl_display_t sDisplay[NUM_DISPLAYS];
		EGLDisplay getDisplay(EGLNativeDisplayType display);

		@@ -141,4 +141,3 @@ EGLBoolean validate_display_surface(EGLDisplay dpy, EGLSurface surface);
		// ----------------------------------------------------------------------------

		#endif // ANDROID_EGL_DISPLAY_H