1 // Copyright 2016 The Chromium Authors. All rights reserved. 2 // Use of this source code is governed by a BSD-style license that can be 3 // found in the LICENSE file. 4 5 #ifndef BASE_MEMORY_SHARED_MEMORY_HELPER_H_ 6 #define BASE_MEMORY_SHARED_MEMORY_HELPER_H_ 7 8 #include "base/memory/shared_memory.h" 9 10 #include <fcntl.h> 11 12 namespace base { 13 14 #if !defined(OS_ANDROID) 15 // Makes a temporary file, fdopens it, and then unlinks it. |fp| is populated 16 // with the fdopened FILE. |readonly_fd| is populated with the opened fd if 17 // options.share_read_only is true. |path| is populated with the location of 18 // the file before it was unlinked. 19 // Returns false if there's an unhandled failure. 20 bool CreateAnonymousSharedMemory(const SharedMemoryCreateOptions& options, 21 ScopedFILE* fp, 22 ScopedFD* readonly_fd, 23 FilePath* path); 24 25 // Takes the outputs of CreateAnonymousSharedMemory and maps them properly to 26 // |mapped_file| or |readonly_mapped_file|, depending on which one is populated. 27 bool PrepareMapFile(ScopedFILE fp, ScopedFD readonly_fd, int* mapped_file, 28 int* readonly_mapped_file); 29 #endif 30 31 } // namespace base 32 33 #endif // BASE_MEMORY_SHARED_MEMORY_HELPER_H_ 34