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/*
* Copyright (c) 2014, Ford Motor Company
* All rights reserved.
*
* Redistribution and use in source and binary forms, with or without
* modification, are permitted provided that the following conditions are met:
*
* Redistributions of source code must retain the above copyright notice, this
* list of conditions and the following disclaimer.
*
* Redistributions in binary form must reproduce the above copyright notice,
* this list of conditions and the following
* disclaimer in the documentation and/or other materials provided with the
* distribution.
*
* Neither the name of the Ford Motor Company nor the names of its contributors
* may be used to endorse or promote products derived from this software
* without specific prior written permission.
*
* THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS "AS IS"
* AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
* IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
* ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT HOLDER OR CONTRIBUTORS BE
* LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR
* CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF
* SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS
* INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN
* CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE)
* ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE
* POSSIBILITY OF SUCH DAMAGE.
*/
#ifndef SRC_COMPONENTS_UTILS_INCLUDE_UTILS_RESOURCE_USAGE_H_
#define SRC_COMPONENTS_UTILS_INCLUDE_UTILS_RESOURCE_USAGE_H_
#include <sys/resource.h>
#if defined(__QNXNTO__)
#include <sys/procfs.h>
#endif
#include "utils/macro.h"
#include <string>
#include <iostream>
#include "utils/logger.h"
#define MAX_COMM_LEN 128
#define MAX_CMDLINE_LEN 128
namespace utils {
struct ResourseUsage {
long long int utime;
long long int stime;
long long int memory;
};
class Resources {
public:
typedef uint32_t MemInfo;
#if defined(__QNXNTO__)
typedef procfs_info PidStats;
#elif defined(OS_LINUX)
struct PidStats {
int pid;
char comm[MAX_COMM_LEN];
char state;
int ppid;
int pgrp;
int session;
int tty_nr;
int tpgid;
unsigned int flags;
unsigned long minflt;
unsigned long cminflt;
unsigned long majflt;
unsigned long cmajflt;
unsigned long utime;
long stime;
long cutime;
long cstime;
long priority;
long nice;
long num_threads;
long itrealvalue;
unsigned long long starttime;
unsigned long vsize;
long rss;
unsigned long rsslim;
unsigned long startcode;
unsigned long endcode;
unsigned long startstack;
unsigned long kstkesp;
unsigned long kstkeip;
unsigned long signal;
unsigned long blocked;
unsigned long sigignore;
unsigned long sigcatch;
unsigned long wchan;
unsigned long nswap;
unsigned long cnswap;
int exit_signal;
int processor;
unsigned int rt_priority;
unsigned int policy;
unsigned long long delayacct_blkio_ticks;
unsigned long guest_time;
long int cguest_time;
};
#else
#endif
public:
/*
* @brief Returns current resource usage of process
* @return Raw pointer on ResourseUsage if success, otherwise return NULL
*/
static ResourseUsage* getCurrentResourseUsage();
private:
#ifdef BUILD_TESTS
friend class ResourceUsagePrivateTest;
FRIEND_TEST(ResourceUsagePrivateTest, ReadStatFileTest);
FRIEND_TEST(ResourceUsagePrivateTest, GetProcInfoTest);
FRIEND_TEST(ResourceUsagePrivateTest, GetMemInfoTest);
FRIEND_TEST(ResourceUsagePrivateTest, GetStatPathTest_FileExists);
FRIEND_TEST(ResourceUsagePrivateTest, GetStatPathTest_ReadFile);
FRIEND_TEST(ResourceUsagePrivateTest, GetProcPathTest);
#endif
/*
* @brief reads /proc/PID/stat file on linux
* do not work on QNX ( return false, output wan't be changed )
* @param output - storage for result string ( there will be separated content of /proc/PID/stat )
* @return true on succes false onb fail
*/
static bool ReadStatFile(std::string& output);
/*
* @brief Grab information about curent process
* @param output - storage for result struct
* @return true on succes false onb fail
*/
static bool GetProcInfo(PidStats& output);
/*
* @brief Grab process memory information
* @param output - storage for result struct
* @return true on succes false onb fail
*/
static bool GetMemInfo(MemInfo& output);
/*
* @brief return path to /proc/PID/stat file on linux
* return path to /proc/PID/as file on linux
* @return path to file
*/
static std::string GetStatPath();
/*
* @brief return path to /proc/PID directry
* @return path to dir
*/
static std::string GetProcPath();
/*
* path to /proc/ directory
*/
static const char* proc;
};
}
#endif /* SRC_COMPONENTS_UTILS_INCLUDE_UTILS_RESOURCE_USAGE_H_ */
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