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For #299, refine code.

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winlin 2017-03-25 17:21:39 +08:00
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trunk/src/app/srs_app_utility.hpp
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@ -1,33 +1,29 @@
/*
The MIT License (MIT)
Copyright (c) 2013-2017 SRS(ossrs)
Permission is hereby granted, free of charge, to any person obtaining a copy of
this software and associated documentation files (the "Software"), to deal in
the Software without restriction, including without limitation the rights to
use, copy, modify, merge, publish, distribute, sublicense, and/or sell copies of
the Software, and to permit persons to whom the Software is furnished to do so,
subject to the following conditions:
The above copyright notice and this permission notice shall be included in all
copies or substantial portions of the Software.
THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY, FITNESS
FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE AUTHORS OR
COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER
IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN
CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE SOFTWARE.
*/
/**
* The MIT License (MIT)
*
* Copyright (c) 2013-2017 SRS(ossrs)
*
* Permission is hereby granted, free of charge, to any person obtaining a copy of
* this software and associated documentation files (the "Software"), to deal in
* the Software without restriction, including without limitation the rights to
* use, copy, modify, merge, publish, distribute, sublicense, and/or sell copies of
* the Software, and to permit persons to whom the Software is furnished to do so,
* subject to the following conditions:
*
* The above copyright notice and this permission notice shall be included in all
* copies or substantial portions of the Software.
*
* THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
* IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY, FITNESS
* FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE AUTHORS OR
* COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER
* IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN
* CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE SOFTWARE.
*/
#ifndef SRS_APP_UTILITY_HPP
#define SRS_APP_UTILITY_HPP
/*
#include <srs_app_utility.hpp>
*/
#include <srs_core.hpp>
#include <vector>
@ -48,32 +44,32 @@ class SrsJsonObject;
extern int srs_socket_connect(std::string server, int port, int64_t tm, st_netfd_t* pstfd);
/**
* convert level in string to log level in int.
* @return the log level defined in SrsLogLevel.
*/
* convert level in string to log level in int.
* @return the log level defined in SrsLogLevel.
*/
extern int srs_get_log_level(std::string level);
/**
* build the path according to vhost/app/stream, where replace variables:
* [vhost], the vhost of stream.
* [app], the app of stream.
* [stream], the stream name of stream.
* @return the replaced path.
*/
* build the path according to vhost/app/stream, where replace variables:
* [vhost], the vhost of stream.
* [app], the app of stream.
* [stream], the stream name of stream.
* @return the replaced path.
*/
extern std::string srs_path_build_stream(std::string template_path, std::string vhost, std::string app, std::string stream);
/**
* build the path according to timestamp, where replace variables:
* [2006], replace this const to current year.
* [01], replace this const to current month.
* [02], replace this const to current date.
* [15], replace this const to current hour.
* [04], repleace this const to current minute.
* [05], repleace this const to current second.
* [999], repleace this const to current millisecond.
* [timestamp],replace this const to current UNIX timestamp in ms.
* @return the replaced path.
*/
* build the path according to timestamp, where replace variables:
* [2006], replace this const to current year.
* [01], replace this const to current month.
* [02], replace this const to current date.
* [15], replace this const to current hour.
* [04], repleace this const to current minute.
* [05], repleace this const to current second.
* [999], repleace this const to current millisecond.
* [timestamp],replace this const to current UNIX timestamp in ms.
* @return the replaced path.
*/
extern std::string srs_path_build_timestamp(std::string template_path);
/**
@ -118,7 +114,7 @@ public:
// the percent of usage. 0.153 is 15.3%.
float percent;
// data of /proc/[pid]/stat
// data of /proc/[pid]/stat
public:
// pid %d The process ID.
int pid;
@ -186,7 +182,7 @@ public:
long num_threads;
// itrealvalue %ld
// The time in jiffies before the next SIGALRM is sent to the process due to an interval timer. Since
// kernel 2.6.17, this field is no longer maintained, and is hard coded as 0.
// kernel 2.6.17, this field is no longer maintained, and is hard coded as 0.
long itrealvalue;
// starttime %llu (was %lu before Linux 2.6)
// The time in jiffies the process started after system boot.
@ -265,34 +261,34 @@ public:
// to stat the cpu time.
// @see: man 5 proc, /proc/stat
/**
* about the cpu time, @see: http://stackoverflow.com/questions/16011677/calculating-cpu-usage-using-proc-files
* for example, for ossrs.net, a single cpu machine:
* [winlin@SRS ~]$ cat /proc/uptime && cat /proc/stat
* 5275153.01 4699624.99
* cpu 43506750 973 8545744 466133337 4149365 190852 804666 0 0
* where the uptime is 5275153.01s
* generally, USER_HZ sysconf(_SC_CLK_TCK)=100, which means the unit of /proc/stat is "1/100ths seconds"
* that is, USER_HZ=1/100 seconds
* cpu total = 43506750+973+8545744+466133337+4149365+190852+804666+0+0 (USER_HZ)
* = 523331687 (USER_HZ)
* = 523331687 * 1/100 (seconds)
* = 5233316.87 seconds
* the cpu total seconds almost the uptime, the delta is more precise.
*
* we run the command about 26minutes:
* [winlin@SRS ~]$ cat /proc/uptime && cat /proc/stat
* 5276739.83 4701090.76
* cpu 43514105 973 8548948 466278556 4150480 190899 804937 0 0
* where the uptime is 5276739.83s
* cpu total = 43514105+973+8548948+466278556+4150480+190899+804937+0+0 (USER_HZ)
* = 523488898 (USER_HZ)
* = 523488898 * 1/100 (seconds)
* = 5234888.98 seconds
* where:
* uptime delta = 1586.82s
* cpu total delta = 1572.11s
* the deviation is more smaller.
*/
* about the cpu time, @see: http://stackoverflow.com/questions/16011677/calculating-cpu-usage-using-proc-files
* for example, for ossrs.net, a single cpu machine:
* [winlin@SRS ~]$ cat /proc/uptime && cat /proc/stat
* 5275153.01 4699624.99
* cpu 43506750 973 8545744 466133337 4149365 190852 804666 0 0
* where the uptime is 5275153.01s
* generally, USER_HZ sysconf(_SC_CLK_TCK)=100, which means the unit of /proc/stat is "1/100ths seconds"
* that is, USER_HZ=1/100 seconds
* cpu total = 43506750+973+8545744+466133337+4149365+190852+804666+0+0 (USER_HZ)
* = 523331687 (USER_HZ)
* = 523331687 * 1/100 (seconds)
* = 5233316.87 seconds
* the cpu total seconds almost the uptime, the delta is more precise.
*
* we run the command about 26minutes:
* [winlin@SRS ~]$ cat /proc/uptime && cat /proc/stat
* 5276739.83 4701090.76
* cpu 43514105 973 8548948 466278556 4150480 190899 804937 0 0
* where the uptime is 5276739.83s
* cpu total = 43514105+973+8548948+466278556+4150480+190899+804937+0+0 (USER_HZ)
* = 523488898 (USER_HZ)
* = 523488898 * 1/100 (seconds)
* = 5234888.98 seconds
* where:
* uptime delta = 1586.82s
* cpu total delta = 1572.11s
* the deviation is more smaller.
*/
class SrsProcSystemStat
{
public:
@ -310,26 +306,26 @@ public:
// previous cpu total = this->total() - total_delta
int64_t total_delta;
// data of /proc/stat
// data of /proc/stat
public:
// The amount of time, measured in units of USER_HZ
// The amount of time, measured in units of USER_HZ
// (1/100ths of a second on most architectures, use
// sysconf(_SC_CLK_TCK) to obtain the right value)
//
// the system spent in user mode,
// the system spent in user mode,
unsigned long long user;
// user mode with low priority (nice),
// user mode with low priority (nice),
unsigned long long nice;
// system mode,
// system mode,
unsigned long long sys;
// and the idle task, respectively.
unsigned long long idle;
// In Linux 2.6 this line includes three additional columns:
//
// iowait - time waiting for I/O to complete (since 2.5.41);
unsigned long long iowait;
// irq - time servicing interrupts (since 2.6.0-test4);
// irq - time servicing interrupts (since 2.6.0-test4);
unsigned long long irq;
// softirq - time servicing softirqs (since 2.6.0-test4).
unsigned long long softirq;
@ -339,11 +335,11 @@ public:
// ating systems when running in a virtualized environment
unsigned long long steal;
// Since Linux 2.6.24, there is a ninth column,
// Since Linux 2.6.24, there is a ninth column,
// guest, which is the time spent running a virtual CPU for guest
// operating systems under the control of the Linux kernel.
unsigned long long guest;
public:
SrsProcSystemStat();
@ -399,63 +395,63 @@ public:
// @see: http://tester-higkoo.googlecode.com/svn-history/r14/trunk/Tools/iostat/iostat.c
// @see: cat /proc/diskstats
//
// Number of issued reads.
// Number of issued reads.
// This is the total number of reads completed successfully.
// Read I/O operations
unsigned int rd_ios;
// Number of reads merged
// Reads merged
unsigned int rd_merges;
// Number of sectors read.
// Number of sectors read.
// This is the total number of sectors read successfully.
// Sectors read
unsigned long long rd_sectors;
// Number of milliseconds spent reading.
// This is the total number of milliseconds spent by all reads
// Number of milliseconds spent reading.
// This is the total number of milliseconds spent by all reads
// (as measured from make_request() to end_that_request_last()).
// Time in queue + service for read
unsigned int rd_ticks;
//
// Number of writes completed.
// Number of writes completed.
// This is the total number of writes completed successfully
// Write I/O operations
unsigned int wr_ios;
// Number of writes merged Reads and writes which are adjacent
// to each other may be merged for efficiency. Thus two 4K
// reads may become one 8K read before it is ultimately
// handed to the disk, and so it will be counted (and queued)
// Number of writes merged Reads and writes which are adjacent
// to each other may be merged for efficiency. Thus two 4K
// reads may become one 8K read before it is ultimately
// handed to the disk, and so it will be counted (and queued)
// as only one I/O. This field lets you know how often this was done.
// Writes merged
unsigned int wr_merges;
// Number of sectors written.
// Number of sectors written.
// This is the total number of sectors written successfully.
// Sectors written
unsigned long long wr_sectors;
// Number of milliseconds spent writing .
// This is the total number of milliseconds spent by all writes
// Number of milliseconds spent writing .
// This is the total number of milliseconds spent by all writes
// (as measured from make_request() to end_that_request_last()).
// Time in queue + service for write
unsigned int wr_ticks;
//
// Number of I/Os currently in progress.
// The only field that should go to zero.
// Incremented as requests are given to appropriate request_queue_t
// Number of I/Os currently in progress.
// The only field that should go to zero.
// Incremented as requests are given to appropriate request_queue_t
// and decremented as they finish.
unsigned int nb_current;
// Number of milliseconds spent doing I/Os.
// Number of milliseconds spent doing I/Os.
// This field is increased so long as field 9 is nonzero.
// Time of requests in queue
unsigned int ticks;
// Number of milliseconds spent doing I/Os.
// This field is incremented at each I/O start, I/O completion,
// I/O merge, or read of these stats by the number of I/Os in
// progress (field 9) times the number of milliseconds spent
// doing I/O since the last update of this field. This can
// provide an easy measure of both I/O completion time and
// Number of milliseconds spent doing I/Os.
// This field is incremented at each I/O start, I/O completion,
// I/O merge, or read of these stats by the number of I/Os in
// progress (field 9) times the number of milliseconds spent
// doing I/O since the last update of this field. This can
// provide an easy measure of both I/O completion time and
// the backlog that may be accumulating.
// Average queue length
unsigned int aveq;
public:
SrsDiskStat();
};
@ -466,7 +462,7 @@ extern SrsDiskStat* srs_get_disk_stat();
extern void srs_update_disk_stat();
// stat system memory info
// @see: cat /proc/meminfo
// @see: cat /proc/meminfo
class SrsMemInfo
{
public:
@ -478,7 +474,7 @@ public:
float percent_ram;
float percent_swap;
// data of /proc/meminfo
// data of /proc/meminfo
public:
// MemActive = MemTotal - MemFree
uint64_t MemActive;
@ -507,7 +503,7 @@ extern SrsMemInfo* srs_get_meminfo();
extern void srs_update_meminfo();
// system cpu hardware info.
// @see: cat /proc/cpuinfo
// @see: cat /proc/cpuinfo
// @remark, we use sysconf(_SC_NPROCESSORS_CONF) to get the cpu count.
class SrsCpuInfo
{
@ -515,7 +511,7 @@ public:
// whether the data is ok.
bool ok;
// data of /proc/cpuinfo
// data of /proc/cpuinfo
public:
// The number of processors configured.
int nb_processors;
@ -639,14 +635,14 @@ public:
int nb_conn_sys_et; // established
int nb_conn_sys_tw; // time wait
int nb_conn_sys_udp; // udp
// retrieve from srs interface
int nb_conn_srs;
public:
SrsNetworkRtmpServer();
};
// get network devices info, use cache to avoid performance problem.
extern SrsNetworkRtmpServer* srs_get_network_rtmp_server();
// the deamon st-thread will update it.