// Copyright 2016 The SwiftShader Authors. All Rights Reserved. // // 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. #ifndef _MMAP_INCLUDED_ #define _MMAP_INCLUDED_ // // Encapsulate memory mapped files // class TMMap { public: TMMap(const char* fileName) : fSize(-1), // -1 is the error value returned by GetFileSize() fp(nullptr), fBuff(0) // 0 is the error value returned by MapViewOfFile() { if ((fp = fopen(fileName, "r")) == NULL) return; char c = getc(fp); fSize = 0; while (c != EOF) { fSize++; c = getc(fp); } if (c == EOF) fSize++; rewind(fp); fBuff = (char*)malloc(sizeof(char) * fSize); int count = 0; c = getc(fp); while (c != EOF) { fBuff[count++] = c; c = getc(fp); } fBuff[count++] = c; } char* getData() { return fBuff; } int getSize() { return fSize; } ~TMMap() { if (fp != NULL) fclose(fp); } private: int fSize; // size of file to map in FILE *fp; char* fBuff; // the actual data; }; #endif // _MMAP_INCLUDED_