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57 lines
1.8 KiB
57 lines
1.8 KiB
/*
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* Copyright (C) 2019 The Android Open Source Project
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*
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* Licensed under the Apache License, Version 2.0 (the "License");
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* you may not use this file except in compliance with the License.
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* You may obtain a copy of the License at
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*
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* http://www.apache.org/licenses/LICENSE-2.0
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*
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* Unless required by applicable law or agreed to in writing, software
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* distributed under the License is distributed on an "AS IS" BASIS,
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* WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
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* See the License for the specific language governing permissions and
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* limitations under the License.
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*/
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#ifndef ART_LIBPROFILE_PROFILE_PROFILE_HELPERS_H_
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#define ART_LIBPROFILE_PROFILE_PROFILE_HELPERS_H_
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#include <unistd.h>
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#include <vector>
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#include "base/globals.h"
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namespace art {
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// Returns true if all the bytes were successfully written to the file descriptor.
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inline bool WriteBuffer(int fd, const uint8_t* buffer, size_t byte_count) {
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while (byte_count > 0) {
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int bytes_written = TEMP_FAILURE_RETRY(write(fd, buffer, byte_count));
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if (bytes_written == -1) {
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return false;
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}
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byte_count -= bytes_written; // Reduce the number of remaining bytes.
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buffer += bytes_written; // Move the buffer forward.
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}
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return true;
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}
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// Add the string bytes to the buffer.
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inline void AddStringToBuffer(std::vector<uint8_t>* buffer, const std::string& value) {
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buffer->insert(buffer->end(), value.begin(), value.end());
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}
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// Insert each byte, from low to high into the buffer.
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template <typename T>
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inline void AddUintToBuffer(std::vector<uint8_t>* buffer, T value) {
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for (size_t i = 0; i < sizeof(T); i++) {
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buffer->push_back((value >> (i * kBitsPerByte)) & 0xff);
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}
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}
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} // namespace art
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#endif // ART_LIBPROFILE_PROFILE_PROFILE_HELPERS_H_
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