One of the JavaScript engine performance comparisons SpiderMonkey

JavaScript is the most commonly used front-end language, and has been used in the backend, such as NodeJS, what is the performance of embedding JavaScript in C + + applications?

Take the most popular Mozilla SpiderMonkey and Google V8 to do a comparison test, first take SpiderMonkey as an example, to perform a 10,000 string of data sorting and inversion

1. Download

https://people.mozilla.org/~sstangl/mozjs-31.2.0.rc0.tar.bz2
bunzip2 mozjs-31.2.0.rc0.tar.bz2
Tar xvf mozjs-31.2.0.rc0.tar

2. Build
Https://developer.mozilla.org/en-US/docs/Mozilla/Projects/SpiderMonkey/Build_Documentation

2.1 Downloads autoconf2.13
Http://ftp.gnu.org/gnu/autoconf/autoconf-2.13.tar.gz
tar xvfz autoconf-2.13.tar.gz

./configure--prefix=/usr--program-suffix=-2.13
Make acdatadir=/usr/share/autoconf-2.13
Make acdatadir=/usr/share/autoconf-2.13 Install

2.2 Compilation Steps
CD JS/SRC
autoconf-2.13

# This name should end with "_opt. OBJ "To make the version control system ignore it.
mkdir build_opt. OBJ
CD build_opt. OBJ
.. /configure
# Use ' Mozmake ' on Windows
Make
Make Install

------------
.. /.. /dist/bin/nsinstall-t Js-config/usr/local/bin
.. /.. /dist/bin/nsinstall-t Libjs_static.a/usr/local/lib
mv-f/usr/local/lib/libjs_static.a/usr/local/lib/libmozjs-31.a
.. /.. /dist/bin/nsinstall-t Libmozjs-31.dylib/usr/local/lib
/applications/xcode.app/contents/developer/usr/bin/make-c Shell Install
.. /.. /.. /dist/bin/nsinstall-t Js/usr/local/bin
------------

2.3 Compilation Verification

#./dist/bin/js
js> print ("Hello World");
Hello World
js> quit ();

3. References
*Https://developer.mozilla.org/en-US/docs/Mozilla/Projects/SpiderMonkey/JSAPI_User_Guide
*Https://developer.mozilla.org/en-US/docs/Mozilla/Projects/SpiderMonkey/How_to_embed_the_JavaScript_engine

4. Test Procedures

#include "jsapi.h" #include <stdio.h> #include <stdlib.h> #include <sys/time.h> #include <time.h > #include <unistd.h> #define Trace_minargs 2#define Time_fmt_len 50using namespace js;//The class of the global O Bject.static Jsclass Globalclass = {"Global", Jsclass_global_flags, Js_propertystub, Js_deletepropertystub, JS_Pro Pertystub, Js_strictpropertystub, Js_enumeratestub, Js_resolvestub, Js_convertstub, nullptr, nullptr, Nullpt    R, nullptr, Js_globalobjecttracehook};long long Current_timestamp (char Arrtimestr[time_fmt_len]) {struct Timeval TV;    struct tm* ptm;    Char time_string[40]; Gettimeofday (&AMP;TV, NULL);        Get current time if (arrtimestr) {ptm = LocalTime (&tv.tv_sec);  /* Format The date and time, down to a single second.        */strftime (time_string, sizeof (time_string), "%y-%m-%d%h:%m:%s", PTM);  /* Compute milliseconds from microseconds. *///snprintf (char * restrict str, size_tSize, const char * restrict format, snprintf (Arrtimestr, Time_fmt_len, "%s.%0    6d ", time_string, tv.tv_usec); } Long Long Total_us = tv.tv_sec * 1000000LL + tv.tv_usec;    Caculate milliseconds//printf ("milliseconds:%lld\n", milliseconds); return Total_us;} [SpiderMonkey] Use Jsbool instead of bool.static bool Debug_trace (jscontext *cx, unsigned argc, Jsval *vp) {JS::        Callargs args = CALLARGSFROMVP (argc, VP);    if (args.length () > 0) {char Sztimestr[time_fmt_len] = {'} '};        Current_timestamp (SZTIMESTR);        Jsstring *str = args[0].tostring ();    printf ("[%s]%s\n", Sztimestr, Js_encodestring (CX, str)); } return true; typedef void (* Jserrorreporter) (Jscontext *cx, const char *message, Jserrorreport *report);//the error reporter Callba            Ck.void Report_error (Jscontext *cx, const char *message, Jserrorreport *report) {fprintf (stderr, "%s:%u:%s\n", Report->filename?         Report->filename: "[no filename]",   (unsigned int) report->lineno, message);}    int Load_file_malloc (const char* szfile, char*& pbuffer, long* pbufsize = null) {file * pFile = null;    Long lsize = 0;    size_t result = 0;    PFile = fopen (Szfile, "R");        if (PFile = = NULL) {fputs ("File open Error", stderr);    return 1;    }//Obtain file Size:fseek (pFile, 0, seek_end);    lsize = Ftell (pFile);    Rewind (PFile);    Allocate memory to contain the whole File:pbuffer = (char*) malloc (sizeof (char) * lsize);        if (pbuffer = = NULL) {fputs ("Memory allocate Error", stderr);        Fclose (PFile);    return 2;    }//Copy the file into the Buffer:result = Fread (pbuffer, 1, lsize, pFile);        if (Result! = lsize) {fputs ("Reading file Error", stderr);        Fclose (PFile);    return 3;    } if (pbufsize) *pbufsize = lsize;    Fclose (PFile); return 0;} int Test (Jscontext *cx, rootedobject* pglobal, const char* pscript) {//rootedobject GlobaL = *pglobal;    Js::rootedvalue Rval (CX);    Jsautocompartment ac (CX, *pglobal);    Js_initstandardclasses (CX, *pglobal);    const char *filename = "Noname";    int Lineno = 1;    bool OK = js_definefunction (cx, *pglobal, "Debug_trace", Debug_trace, Trace_minargs, 0);    if (!ok) return 1;    OK = Js_evaluatescript (cx, *pglobal, Pscript, strlen (pscript), filename, Lineno, &rval);    if (!ok) return 2;    Jsstring *str = rval.tostring ();    printf ("%s\n", js_encodestring (CX, str)); return 0;}    int run (Jscontext *cx, const char* pscript) {//Enter a request before running anything in the context.    Jsautorequest ar (CX);    Create the global object and a new compartment.    Rootedobject Global (CX);    Global = Js_newglobalobject (CX, &globalclass, nullptr, JS::D ontfireonnewglobalhook);    if (!global) return 1;    Enter the new Global object ' s compartment.    Jsautocompartment AC (CX, Global); Populate theGlobal object with the Globals, like object and//Array. if (!    Js_initstandardclasses (CX, Global)) return 1; Your application code here.    This could include JSAPI calls to create your//own custom JS objects and run scripts.    Long Long begin_time = Current_timestamp (NULL);    Test (CX, &global, pscript);    Long Long end_time = Current_timestamp (NULL);    printf ("Calling costs%lld microseconds\n", end_time-begin_time); return 0;}    int main (int argc, const char *argv[]) {//Initialize the JS engine. if (!    Js_init ()) return 1;    Create a JS runtime.    Jsruntime *rt = js_newruntime (8L * 1024L * 1024L, js_use_helper_threads);    if (!RT) return 1;    Create a context.    Jscontext *cx = Js_newcontext (RT, 8192);    if (!CX) return 1;    Js_seterrorreporter (jscontext *cx, jserrorreporter er);    Js_seterrorreporter (CX, report_error);    int status = 0;        if (argc > 1) {char* buffer = NULL; int ret = Load_file_malloc (argv[1], buffer);        if (ret! = 0) {return ret;        } status = Run (cx, buffer);    Free if (buffer) free (buffer);        } else {const char *script = "' Hello ' + ' world, it is ' +new Date ()";    Status = Run (CX, script);    }//Shut everything down.    Js_destroycontext (CX);    Js_destroyruntime (RT);    Js_shutdown (); return status;}

Test JavaScript scripts

function Random_str () {    var text = "";    var possible = "ABCDEFGHIJKLMNOPQRSTUVWXYZabcdefghijklmnopqrstuvwxyz0123456789";    for (var i=0; i < 8; i++)        text + = Possible.charat (Math.floor (Math.random () * possible.length))    ; return text;} var array = new Array (), for (var i = 0; i < 10000; i++) {Array[array.length] = Random_str ();} Debug_trace ("Begin sort and reverse array which length=" + array.length); Array.Sort (); Array.reverse ();d ebug_trace (" Done, First element= "+ array[0]+", "+" last element= "+ array[array.length-1]);

Test results

$./test/spidermonkeytest./test/arraysort.js

[2015-05-07 21:07:29.762895] begin sort and reverse array which length=10000
[2015-05-07 21:07:29.766270] done, first ELEMENT=ZZJG0PNH, last Element=0000lzbe

Calling costs 52492 microseconds

Performance is still, about 4 milliseconds, next step to see how Google V8 Performance

One of the JavaScript engine performance comparisons SpiderMonkey