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/*
* Licensed to the Apache Software Foundation (ASF) under one
* or more contributor license agreements. See the NOTICE file
* distributed with this work for additional information
* regarding copyright ownership. The ASF licenses this file
* to you 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.
*/
#include <limits.h>
#include <stdlib.h>
#include "utils.hpp"
#include "logger.hpp"
#include "drill/common.hpp"
#if defined _WIN32 || defined _WIN64
//Windows header files redefine 'max'
#ifdef max
#undef max
#endif
#endif
namespace Drill{
boost::random::random_device Utils::s_RNG;
boost::random::mt19937 Utils::s_URNG(s_RNG());
boost::uniform_int<> Utils::s_uniformDist(0,std::numeric_limits<int>::max()-1);
boost::variate_generator<boost::random::mt19937&, boost::uniform_int<> > Utils::s_randomNumber(s_URNG, s_uniformDist);
boost::mutex AllocatedBuffer::s_memCVMutex;
boost::condition_variable AllocatedBuffer::s_memCV;
size_t AllocatedBuffer::s_allocatedMem = 0;
bool AllocatedBuffer::s_isBufferLimitReached = false;
boost::mutex s_utilMutex;
ByteBuf_t Utils::allocateBuffer(size_t len){
boost::lock_guard<boost::mutex> memLock(AllocatedBuffer::s_memCVMutex);
AllocatedBuffer::s_allocatedMem += len;
//http://stackoverflow.com/questions/2688466/why-mallocmemset-is-slower-than-calloc
ByteBuf_t b = (ByteBuf_t)calloc(len, sizeof(Byte_t));
size_t safeSize = DrillClientConfig::getBufferLimit() - MEM_CHUNK_SIZE;
if (b != NULL && AllocatedBuffer::s_allocatedMem >= safeSize){
AllocatedBuffer::s_isBufferLimitReached = true;
}
return b;
}
void Utils::freeBuffer(ByteBuf_t b, size_t len){
boost::lock_guard<boost::mutex> memLock(AllocatedBuffer::s_memCVMutex);
AllocatedBuffer::s_allocatedMem -= len;
free(b);
size_t safeSize = DrillClientConfig::getBufferLimit() - MEM_CHUNK_SIZE;
if (b != NULL && AllocatedBuffer::s_allocatedMem < safeSize){
AllocatedBuffer::s_isBufferLimitReached = false;
//signal any waiting threads
AllocatedBuffer::s_memCV.notify_one();
}
}
void Utils::parseConnectStr(const char* connectStr,
std::string& pathToDrill,
std::string& protocol,
std::string& hostPortStr){
boost::lock_guard<boost::mutex> memLock(s_utilMutex);
char u[MAX_CONNECT_STR + 1];
strncpy(u, connectStr, MAX_CONNECT_STR); u[MAX_CONNECT_STR] = 0;
char* z = strtok(u, "=");
char* c = strtok(NULL, "/");
char* p = strtok(NULL, "");
if (p != NULL) pathToDrill = std::string("/") + p;
protocol = z; hostPortStr = c;
return;
}
void Utils::shuffle(std::vector<std::string>& vector){
std::random_shuffle(vector.begin(), vector.end(), Utils::s_randomNumber);
return;
}
void Utils::add(std::vector<std::string>& vector1, std::vector<std::string>& vector2){
std::vector<std::string>::iterator it;
for (it = vector2.begin(); it != vector2.end(); it++) {
std::vector<std::string>::iterator it2 = std::find(vector1.begin(), vector1.end(), *it);
if (it2 == vector1.end()){
vector1.push_back(*it);
}
}
}
AllocatedBuffer::AllocatedBuffer(size_t l){
m_pBuffer = NULL;
m_pBuffer = Utils::allocateBuffer(l);
m_bufSize = m_pBuffer != NULL ? l : 0;
}
AllocatedBuffer::~AllocatedBuffer(){
Utils::freeBuffer(m_pBuffer, m_bufSize);
m_pBuffer = NULL;
m_bufSize = 0;
}
} // namespace
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