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author | Tao Bao <tbao@google.com> | 2017-10-04 01:39:15 +0200 |
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committer | android-build-merger <android-build-merger@google.com> | 2017-10-04 01:39:15 +0200 |
commit | b50d7cf9c934137dcddef8cc489a6541e7757e44 (patch) | |
tree | 0f575dabb45c5c8bfed5fcd0ec788b71495fd312 /otautil/include/otautil/SysUtil.h | |
parent | Merge "screen_ui: stage marker positioning" (diff) | |
parent | Merge "otautil: Export headers." (diff) | |
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Diffstat (limited to 'otautil/include/otautil/SysUtil.h')
-rw-r--r-- | otautil/include/otautil/SysUtil.h | 53 |
1 files changed, 53 insertions, 0 deletions
diff --git a/otautil/include/otautil/SysUtil.h b/otautil/include/otautil/SysUtil.h new file mode 100644 index 000000000..52f6d20a7 --- /dev/null +++ b/otautil/include/otautil/SysUtil.h @@ -0,0 +1,53 @@ +/* + * Copyright 2006 The Android Open Source Project + * + * 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 _OTAUTIL_SYSUTIL +#define _OTAUTIL_SYSUTIL + +#include <sys/types.h> + +#include <string> +#include <vector> + +/* + * Use this to keep track of mapped segments. + */ +class MemMapping { + public: + ~MemMapping(); + // Map a file into a private, read-only memory segment. If 'filename' begins with an '@' + // character, it is a map of blocks to be mapped, otherwise it is treated as an ordinary file. + bool MapFile(const std::string& filename); + size_t ranges() const { + return ranges_.size(); + }; + + unsigned char* addr; // start of data + size_t length; // length of data + + private: + struct MappedRange { + void* addr; + size_t length; + }; + + bool MapBlockFile(const std::string& filename); + bool MapFD(int fd); + + std::vector<MappedRange> ranges_; +}; + +#endif // _OTAUTIL_SYSUTIL |