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/*
* Copyright (C) 2019 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 ART_LIBPROFILE_PROFILE_PROFILE_HELPERS_H_
#define ART_LIBPROFILE_PROFILE_PROFILE_HELPERS_H_
#include <unistd.h>
#include <vector>
#include "base/globals.h"
namespace art {
// Returns true if all the bytes were successfully written to the file descriptor.
inline bool WriteBuffer(int fd, const uint8_t* buffer, size_t byte_count) {
while (byte_count > 0) {
int bytes_written = TEMP_FAILURE_RETRY(write(fd, buffer, byte_count));
if (bytes_written == -1) {
return false;
}
byte_count -= bytes_written; // Reduce the number of remaining bytes.
buffer += bytes_written; // Move the buffer forward.
}
return true;
}
// Add the string bytes to the buffer.
inline void AddStringToBuffer(std::vector<uint8_t>* buffer, const std::string& value) {
buffer->insert(buffer->end(), value.begin(), value.end());
}
// Insert each byte, from low to high into the buffer.
template <typename T>
inline void AddUintToBuffer(std::vector<uint8_t>* buffer, T value) {
for (size_t i = 0; i < sizeof(T); i++) {
buffer->push_back((value >> (i * kBitsPerByte)) & 0xff);
}
}
} // namespace art
#endif // ART_LIBPROFILE_PROFILE_PROFILE_HELPERS_H_
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