zend_dtrace.c

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/*
   +----------------------------------------------------------------------+
   | Zend Engine                                                          |
   +----------------------------------------------------------------------+
   | Copyright (c) Zend Technologies Ltd. (http://www.zend.com)           |
   +----------------------------------------------------------------------+
   | This source file is subject to version 2.00 of the Zend license,     |
   | that is bundled with this package in the file LICENSE, and is        |
   | available through the world-wide-web at the following url:           |
   | http://www.zend.com/license/2_00.txt.                                |
   | If you did not receive a copy of the Zend license and are unable to  |
   | obtain it through the world-wide-web, please send a note to          |
   | license@zend.com so we can mail you a copy immediately.              |
   +----------------------------------------------------------------------+
   | Authors: David Soria Parra <david.soriaparra@sun.com>                |
   +----------------------------------------------------------------------+
*/
 
#include "zend.h"
#include "zend_API.h"
#include "zend_dtrace.h"
 
#ifdef HAVE_DTRACE
 
ZEND_API zend_op_array *(*zend_dtrace_compile_file)(zend_file_handle *file_handle, int type);
ZEND_API void (*zend_dtrace_execute)(zend_op_array *op_array);
ZEND_API void (*zend_dtrace_execute_internal)(zend_execute_data *execute_data, zval *return_value);
 
/* PHP DTrace probes {{{ */
static inline const char *dtrace_get_executed_filename(void)
{
    zend_execute_data *ex = EG(current_execute_data);
 
    while (ex && (!ex->func || !ZEND_USER_CODE(ex->func->type))) {
        ex = ex->prev_execute_data;
    }
    if (ex) {
        return ZSTR_VAL(ex->func->op_array.filename);
    } else {
        return zend_get_executed_filename();
    }
}
 
ZEND_API zend_op_array *dtrace_compile_file(zend_file_handle *file_handle, int type)
{
    zend_op_array *res;
    DTRACE_COMPILE_FILE_ENTRY(ZSTR_VAL(file_handle->opened_path), ZSTR_VAL(file_handle->filename));
    res = compile_file(file_handle, type);
    DTRACE_COMPILE_FILE_RETURN(ZSTR_VAL(file_handle->opened_path), ZSTR_VAL(file_handle->filename));
 
    return res;
}
 
/* We wrap the execute function to have fire the execute-entry/return and function-entry/return probes */
ZEND_API void dtrace_execute_ex(zend_execute_data *execute_data)
{
    int lineno;
    const char *scope, *filename, *funcname, *classname;
    scope = filename = funcname = classname = NULL;
 
    /* we need filename and lineno for both execute and function probes */
    if (DTRACE_EXECUTE_ENTRY_ENABLED() || DTRACE_EXECUTE_RETURN_ENABLED()
        || DTRACE_FUNCTION_ENTRY_ENABLED() || DTRACE_FUNCTION_RETURN_ENABLED()) {
        filename = dtrace_get_executed_filename();
        lineno = zend_get_executed_lineno();
    }
 
    if (DTRACE_FUNCTION_ENTRY_ENABLED() || DTRACE_FUNCTION_RETURN_ENABLED()) {
        classname = get_active_class_name(&scope);
        funcname = get_active_function_name();
    }
 
    if (DTRACE_EXECUTE_ENTRY_ENABLED()) {
        DTRACE_EXECUTE_ENTRY((char *)filename, lineno);
    }
 
    if (DTRACE_FUNCTION_ENTRY_ENABLED() && funcname != NULL) {
        DTRACE_FUNCTION_ENTRY((char *)funcname, (char *)filename, lineno, (char *)classname, (char *)scope);
    }
 
    execute_ex(execute_data);
 
    if (DTRACE_FUNCTION_RETURN_ENABLED() && funcname != NULL) {
        DTRACE_FUNCTION_RETURN((char *)funcname, (char *)filename, lineno, (char *)classname, (char *)scope);
    }
 
    if (DTRACE_EXECUTE_RETURN_ENABLED()) {
        DTRACE_EXECUTE_RETURN((char *)filename, lineno);
    }
}
 
ZEND_API void dtrace_execute_internal(zend_execute_data *execute_data, zval *return_value)
{
    int lineno;
    const char *filename;
    if (DTRACE_EXECUTE_ENTRY_ENABLED() || DTRACE_EXECUTE_RETURN_ENABLED()) {
        filename = dtrace_get_executed_filename();
        lineno = zend_get_executed_lineno();
    }
 
    if (DTRACE_EXECUTE_ENTRY_ENABLED()) {
        DTRACE_EXECUTE_ENTRY((char *)filename, lineno);
    }
 
    execute_internal(execute_data, return_value);
 
    if (DTRACE_EXECUTE_RETURN_ENABLED()) {
        DTRACE_EXECUTE_RETURN((char *)filename, lineno);
    }
}
 
void dtrace_error_notify_cb(int type, zend_string *error_filename, uint32_t error_lineno, zend_string *message)
{
    if (DTRACE_ERROR_ENABLED()) {
        DTRACE_ERROR(ZSTR_VAL(message), ZSTR_VAL(error_filename), error_lineno);
    }
}
 
/* }}} */
 
#endif /* HAVE_DTRACE */