Sara@2: /* 
Sara@2:  * File:   first.cpp
Sara@2:  * Author: sara
Sara@2:  *
Sara@2:  * Created on December 30, 2013, 11:41 AM
Sara@2:  */
Sara@2: 
Sara@2: #include <cstdlib>
Sara@2: /* Include the JSAPI header file to get access to SpiderMonkey. */
Sara@2: #include "jsapi.h"
Sara@2: #include <pthread.h>
Sara@2: 
Sara@2: using namespace std;
Sara@2: struct thread_parameter
Sara@2: {
Sara@2:  // char *uncompiledScript;
Sara@2:    // JSObject *sharedGlobalObject;
Sara@2:    // JSRuntime *currRt;
Sara@2:     char *tempstr;
Sara@2:    
Sara@2: 
Sara@2: };
Sara@2: /* The class of the global object. */
Sara@2: JSRuntime *rt;
Sara@2: JSObject  *global;
Sara@2: static JSClass global_class = {
Sara@2:     "global", JSCLASS_GLOBAL_FLAGS,
Sara@2:     JS_PropertyStub, JS_PropertyStub, JS_PropertyStub, JS_StrictPropertyStub,
Sara@2:     JS_EnumerateStub, JS_ResolveStub, JS_ConvertStub, JS_FinalizeStub,
Sara@2:     JSCLASS_NO_OPTIONAL_MEMBERS
Sara@2: };
Sara@2: 
Sara@2: /* The error reporter callback. */
Sara@2: void reportError(JSContext *cx, const char *message, JSErrorReport *report)
Sara@2: {
Sara@2:     fprintf(stderr, "%s:%u:%s\n",
Sara@2:             report->filename ? report->filename : "<no filename=\"filename\">",
Sara@2:             (unsigned int) report->lineno,
Sara@2:             message);
Sara@2: }
Sara@2: /** the function which the thread executes when is created at main 
Sara@2:  *@parameter structure of all the argument the function needs
Sara@2:  *@return return null at the end 
Sara@2: */ 
Sara@2: void *threadFunction(void* arg){
Sara@2:  /* indicates that the execution of the script is executed successfully or not*/
Sara@2:  bool execute;
Sara@2:  int temp = 1;
Sara@2: // char *script = "'Hi' + 'Sara'";
Sara@2:  char threadScript[] = "'Hi ' + 'Sara!'";
Sara@2:  char *scr = threadScript;
Sara@2:   JSString *outStr;
Sara@2: /* carries the value of the last expression of the script*/
Sara@2:  jsval rval1;
Sara@2:  
Sara@2: /* The new context which is created by the thread*/
Sara@2:   JSContext *currContext;
Sara@2: /* pass the incoming argument of the function */
Sara@2: // struct thread_parameter *arg1 = (struct thread_parameter *) arg;
Sara@2: //const char *uncScript = (const char*)arg->uncompiledScript;
Sara@2:   //scr = (char *)arg;
Sara@2: /*Creates new context to be attached to the creator thread*/ 
Sara@2: currContext = JS_NewContext(rt, 8192);
Sara@2:   if (currContext == NULL)
Sara@2:        return NULL;
Sara@2: /* In a thread safe build every entry to the api that uses
Sara@2:    context must be in a request for thread safety*/
Sara@2:   JS_BeginRequest(currContext);
Sara@2:    JS_SetOptions(currContext, JSOPTION_VAROBJFIX | JSOPTION_JIT | JSOPTION_METHODJIT);
Sara@2:    JS_SetVersion(currContext, JSVERSION_LATEST);
Sara@2: /*Compiles the incoming script*/
Sara@2:   JSObject *compiledScript = JS_CompileScript(currContext, global, scr,strlen(scr), "threadFilename", 0);
Sara@2: /*Executes the compiled script*/
Sara@2:    execute = JS_ExecuteScript(currContext, global, compiledScript, &rval1);
Sara@2:       if ( rval1 == JS_FALSE)//rval == JS_NULL |
Sara@2:         return NULL;
Sara@2:     /*gets the returned value of the last expression of the executed script*/
Sara@2:     outStr = JS_ValueToString(currContext, rval1);
Sara@2:     printf("%s\n", JS_EncodeString(currContext, outStr));
Sara@2: /*Ends the request */
Sara@2:     JS_EndRequest(currContext);
Sara@2: /*Destroy the context of that thread*/
Sara@2:      JS_DestroyContext(currContext);
Sara@2:  //printf("HI, Sara");
Sara@2:     return NULL;
Sara@2:     
Sara@2: }
Sara@2: /*
Sara@2:  * 
Sara@2:  */
Sara@2: int main(int argc, const char *argv[]) {
Sara@2: 
Sara@2:      /* JSAPI variables. */
Sara@2:     //JSRuntime *rt;
Sara@2:     JSContext *cx;
Sara@2:    // JSObject  *global;
Sara@2: /* id of the created thread*/
Sara@2:     pthread_t thread_id;
Sara@2: 
Sara@2:     /* Create a JS runtime. You always need at least one runtime per process. */
Sara@2:     rt = JS_NewRuntime(8 * 1024 * 1024);
Sara@2:     if (rt == NULL)
Sara@2:         return 1;
Sara@2: 
Sara@2:     /* 
Sara@2:      * Create a context. You always need a context per thread.
Sara@2:      * Note that this program is not multi-threaded.
Sara@2:      This thread is used by the main thread only
Sara@2:      */
Sara@2:     cx = JS_NewContext(rt, 8192);
Sara@2:     if (cx == NULL)
Sara@2:         return 1;
Sara@2:     JS_BeginRequest(cx);
Sara@2:     JS_SetOptions(cx, JSOPTION_VAROBJFIX | JSOPTION_JIT | JSOPTION_METHODJIT);
Sara@2:     JS_SetVersion(cx, JSVERSION_LATEST);
Sara@2:     JS_SetErrorReporter(cx, reportError);
Sara@2: 
Sara@2:     /*
Sara@2:      * Create the global object in a new compartment.
Sara@2:      * You always need a global object per context.
Sara@2:      */
Sara@2:     
Sara@2:     global = JS_NewCompartmentAndGlobalObject(cx, &global_class, NULL);
Sara@2:     if (global == NULL)
Sara@2:         return 1;
Sara@2: 
Sara@2:     /*
Sara@2:      * Populate the global object with the standard JavaScript
Sara@2:      * function and object classes, such as Object, Array, Date.
Sara@2:      */
Sara@2:     if (!JS_InitStandardClasses(cx, global))
Sara@2:         return 1;
Sara@2: 
Sara@2:     /* Your application code here. This may include JSAPI calls
Sara@2:      * to create your own custom JavaScript objects and to run scripts.
Sara@2:      *
Sara@2:      * The following example code creates a literal JavaScript script,
Sara@2:      * evaluates it, and prints the result to stdout.
Sara@2:      *
Sara@2:      * Errors are conventionally saved in a JSBool variable named ok.
Sara@2:      */
Sara@2: 
Sara@2: 
Sara@2:     /** Create the thread here....*/
Sara@2:     struct thread_parameter threadArg;
Sara@2:     //threadArg.sharedGlobalObject = global;
Sara@2:      char threadScript[] = "'Hi ' + 'Sara!'";
Sara@2:     //threadArg.tempstr = threadScript;
Sara@2:     //threadArg.currRt = rt;
Sara@2:    
Sara@2:     pthread_create(&thread_id, NULL, &threadFunction,NULL);
Sara@2: /*****************************************************************/
Sara@2:     const char *script = "'Hello ' + 'World!'";
Sara@2:     jsval rval;
Sara@2:     JSString *str;
Sara@2:     JSBool ok;
Sara@2:     const char *filename = "noname";
Sara@2:     uintN lineno = 0;
Sara@2:     ok = JS_EvaluateScript(cx, global, script, strlen(script),
Sara@2:                            filename, lineno, &rval);
Sara@2:     if ( rval == JS_FALSE)//rval == JS_NULL |
Sara@2:         return 1;
Sara@2:     str = JS_ValueToString(cx, rval);
Sara@2:     printf("%s\n", JS_EncodeString(cx, str));
Sara@2: 
Sara@2:     /* End of your application code */
Sara@2: 
Sara@2:     /* Clean things up and shut down SpiderMonkey. */
Sara@2:     JS_EndRequest(cx);
Sara@2:     JS_DestroyContext(cx);
Sara@2:     JS_DestroyRuntime(rt);
Sara@2:     JS_ShutDown();
Sara@2:     
Sara@2:     return 0;
Sara@2: }
Sara@2: