Fix SDK build on Windows due to use of mmap. (9ee93d18) · Commits · e / os / platform_frameworks_native

include/utils/Tokenizer.h

+3 −1

Original line number	Diff line number	Diff line
		@@ -19,6 +19,7 @@

		#include <assert.h>
		#include <utils/Errors.h>
		#include <utils/FileMap.h>
		#include <utils/String8.h>

		namespace android {
		@@ -27,7 +28,7 @@ namespace android {
		* A simple tokenizer for loading and parsing ASCII text files line by line.
		*/
		class Tokenizer {
		Tokenizer(const String8& filename, const char* buffer, size_t length);
		Tokenizer(const String8& filename, FileMap* fileMap, const char* buffer, size_t length);

		public:
		~Tokenizer();
		@@ -108,6 +109,7 @@ private:
		Tokenizer(const Tokenizer& other); // not copyable

		String8 mFilename;
		FileMap* mFileMap;
		const char* mBuffer;
		size_t mLength;

libs/utils/Tokenizer.cpp

+17 −15

Original line number	Diff line number	Diff line
		@@ -22,7 +22,6 @@
		#include <errno.h>
		#include <sys/types.h>
		#include <sys/stat.h>
		#include <sys/mman.h>
		#include <utils/Log.h>
		#include <utils/Tokenizer.h>

		@@ -37,13 +36,16 @@ static inline bool isDelimiter(char ch, const char* delimiters) {
		}


		Tokenizer::Tokenizer(const String8& filename, const char* buffer, size_t length) :
		mFilename(filename), mBuffer(buffer), mLength(length),
		Tokenizer::Tokenizer(const String8& filename, FileMap* fileMap,
		const char* buffer, size_t length) :
		mFilename(filename), mFileMap(fileMap), mBuffer(buffer), mLength(length),
		mCurrent(buffer), mLineNumber(1) {
		}

		Tokenizer::~Tokenizer() {
		munmap((void*)mBuffer, mLength);
		if (mFileMap) {
		mFileMap->release();
		}
		}

		status_t Tokenizer::open(const String8& filename, Tokenizer** outTokenizer) {
		@@ -55,29 +57,29 @@ status_t Tokenizer::open(const String8& filename, Tokenizer** outTokenizer) {
		result = -errno;
		LOGE("Error opening file '%s', %s.", filename.string(), strerror(errno));
		} else {
		struct stat64 stat;
		if (fstat64(fd, &stat)) {
		struct stat stat;
		if (fstat(fd, &stat)) {
		result = -errno;
		LOGE("Error getting size of file '%s', %s.", filename.string(), strerror(errno));
		} else {
		size_t length = size_t(stat.st_size);
		void* buffer = mmap(NULL, length, PROT_READ, MAP_FILE \| MAP_PRIVATE, fd, 0);
		if (buffer == MAP_FAILED) {
		result = -errno;
		FileMap* fileMap = new FileMap();
		if (!fileMap->create(NULL, fd, 0, length, true)) {
		result = NO_MEMORY;
		LOGE("Error mapping file '%s', %s.", filename.string(), strerror(errno));
		} else {
		if (madvise(buffer, length, MADV_SEQUENTIAL)) {
		LOGW("Error calling madvise for mmapped file '%s', %s.", filename.string(),
		strerror(errno));
		}
		fileMap->advise(FileMap::SEQUENTIAL);

		outTokenizer = new Tokenizer(filename, static_cast<const char>(buffer), length);
		*outTokenizer = new Tokenizer(filename, fileMap,
		static_cast<const char*>(fileMap->getDataPtr()), length);
		if (!*outTokenizer) {
		result = NO_MEMORY;
		LOGE("Error allocating tokenizer for file=%s.", filename.string());
		munmap(buffer, length);
		}
		}
		if (result) {
		fileMap->release();
		}
		}
		close(fd);
		}