PHP kernel two big stream request processing _php Tutorial

PHP kernel two major stream request processing

static int Php_handler (Request_rec *r) {/* Initiliaze the context */php_struct * volatile ctx;        void *conf;        Apr_bucket_brigade * Volatile Brigade;        Apr_bucket *bucket;        apr_status_t RV;        Request_rec * volatile parent_req = NULL;        Tsrmls_fetch (); Zend_file_handle zfd;        Zfd.type = Zend_handle_filename;        Zfd.filename = (char *) r->filename;        Zfd.free_filename = 0; Zfd.opened_path = null;zend_execute_scripts (Zend_include tsrmls_cc, NULL, 1, &AMP;ZFD); ZEND_API int zend_execute_scripts (int type tsrmls_dc, zval **retval, int file_count, ...)/* * {{*/{... eg (active_op_array) = \zend_compile_file (File_handle, type TSRMLS_CC); Zend_execute (eg (active_op_array) TSRMLS _CC); Zend_api void Execute (zend_op_array *op_array tsrmls_dc)  {    //Initialize execution context      Zend_ Execute_data Execute_data;       //If there is an exception, exit execution      if (EG (exception) {         return,     }       /* Initialize Execute_data */     EX (FBC) = NULL; Initialize the function being called      EX (object) = NULL; Initialize the object being called      EX (old_error_reporting) = NULL; Initialize error reporting variables           //Allocate space for execution stack      if (Op_array->t < Temp_va R_stack_limit) {         EX (Ts) = (temp_variable *) Do_alloca (sizeof (temp_variable) * op_array-& Gt T);     } else {         EX (Ts) = (temp_variable *) safe_emalloc (sizeof (TEMP_VARIABL e), op_array->t, 0);     }     //Allocate space for temporary variables and initialize these spaces      EX (CVs) = (zval***) do_alloca (sizeof (ZV al**) * Op_array->last_var);      memset (EX (CVs), 0, sizeof (zval**) * Op_array->last_var);            EX (op_array) = Op_array;           //Toggle Execution Context      EX (original_in_execution) = EG (in_execution);      EX (symbol_table) = EG (active_symbol_table);      EX (prev_execute_data) = EG (Current_execute_data); Pushes the execution data in the current global variable stack      EG (current_execute_data) = &execute_data; Pushes the current execution context stack        EG (in_execution) = 1;     /Initialize first instruction (opcode)     /*     #define ZEND_VM_SET_OPCODE (NEW_OP) \& nbsp;    Check_symbol_tables () \     EX (opline) = new_op          Execute_data.opline for the currently executing opcode     * *      if (op_array->start_op) {   &NB Sp     Zend_vm_set_opcode (OP_ARRAY-&GT;START_OP);     } else {         Zend_vm_set_opcode (op_array->opcodes);    &NB Sp }        if (OP_ARRAY-&GT;uses_this && eg (this)) {         EG (this)->refcount++;/* for $this pointer */&NBS p;        if (Zend_hash_add (EG (active_symbol_table), "This", sizeof ("the"), &eg (this), sizeof ( Zval *), NULL) ==failure) {             EG (this)->refcount--;      &N Bsp  }     }       //Assign the memory address of the storage opline to the EXECUTOR_GLOBALS.ONLINE_PTR, OpCode execution      EG (opline_ptr) = &ex (Opline) can be tracked in real time;        EX (function_state). function = (zend_function *) Op_array;      EG (function_state_ptr) = &ex (function_state);   #if zend_debug     /* function_state.function_symbol_table is saved as-is to a stack,   &n Bsp  * which is an intentional UMR.  shut it up if we ' re in debug.      */     EX (function_state). Function_symbol_ta ble = NULL;   #endif            while (1) {  #ifdef zend_win32          if (EG (timed_out)) {             zend_timeout (0),        &N Bsp }   #endif                   //loop calls each Opline handler function if it is launched function, the return value is greater than 0, exit          if (EX (opline)->handler (&execute_data tsrmls_cc) > 0) {&nbsp ;      return;         }       }      Zend_error_noreturn (e_error, "A Rrived at end of main loop which shouldn ' t happen ");  }  

http://www.bkjia.com/PHPjc/914780.html www.bkjia.com true http://www.bkjia.com/PHPjc/914780.html techarticle PHP kernel Two major flow request processing static int Php_handler (Request_rec *r) {/* Initiliaze the context */php_struct * volatile ctx; void *co nf Apr_bucket_brigade * Volatile Brigad ...

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