mirror of
https://gitlab.winehq.org/wine/wine-gecko.git
synced 2024-09-13 09:24:08 -07:00
7c96945e3c
--HG-- extra : rebase_source : 3e77b67fa9fe2cc31312ad99951cf92258a98e64
189 lines
5.5 KiB
C++
189 lines
5.5 KiB
C++
/* -*- Mode: C++; tab-width: 8; indent-tabs-mode: nil; c-basic-offset: 4 -*-
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* vim: set ts=8 sw=4 et tw=80:
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*
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* ***** BEGIN LICENSE BLOCK *****
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* Version: MPL 1.1/GPL 2.0/LGPL 2.1
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*
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* The contents of this file are subject to the Mozilla Public License Version
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* 1.1 (the "License"); you may not use this file except in compliance with
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* the License. You may obtain a copy of the License at
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* http://www.mozilla.org/MPL/
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*
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* Software distributed under the License is distributed on an "AS IS" basis,
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* WITHOUT WARRANTY OF ANY KIND, either express or implied. See the License
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* for the specific language governing rights and limitations under the
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* License.
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*
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* Copyright (C) 2007 Sun Microsystems, Inc. All Rights Reserved.
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*
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* Contributor(s):
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* Brendan Eich <brendan@mozilla.org>
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*
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* Alternatively, the contents of this file may be used under the terms of
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* either of the GNU General Public License Version 2 or later (the "GPL"),
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* or the GNU Lesser General Public License Version 2.1 or later (the "LGPL"),
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* in which case the provisions of the GPL or the LGPL are applicable instead
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* of those above. If you wish to allow use of your version of this file only
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* under the terms of either the GPL or the LGPL, and not to allow others to
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* use your version of this file under the terms of the MPL, indicate your
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* decision by deleting the provisions above and replace them with the notice
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* and other provisions required by the GPL or the LGPL. If you do not delete
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* the provisions above, a recipient may use your version of this file under
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* the terms of any one of the MPL, the GPL or the LGPL.
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*
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* ***** END LICENSE BLOCK ***** */
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#include "jsapi.h"
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#include "jsutil.h"
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#include "jsatom.h"
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#include "jscntxt.h"
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#include "jsdbgapi.h"
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#include "jsfun.h"
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#include "jsinterp.h"
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#include "jsobj.h"
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#include "jsscript.h"
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#include "jsstr.h"
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#ifdef __APPLE__
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#include "sharkctl.h"
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#endif
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#include "jsprobes.h"
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#include <sys/types.h>
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#define TYPEOF(cx,v) (JSVAL_IS_NULL(v) ? JSTYPE_NULL : JS_TypeOfValue(cx,v))
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using namespace js;
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const char Probes::nullName[] = "(null)";
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const char *
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Probes::FunctionClassname(const JSFunction *fun)
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{
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return (fun && !FUN_INTERPRETED(fun) && !(fun->flags & JSFUN_TRCINFO) && FUN_CLASP(fun))
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? (char *)FUN_CLASP(fun)->name
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: nullName;
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}
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const char *
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Probes::ScriptFilename(JSScript *script)
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{
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return (script && script->filename) ? (char *)script->filename : nullName;
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}
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int
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Probes::FunctionLineNumber(JSContext *cx, const JSFunction *fun)
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{
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if (fun && FUN_INTERPRETED(fun))
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return (int) JS_GetScriptBaseLineNumber(cx, FUN_SCRIPT(fun));
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return 0;
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}
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/*
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* This function is used to convert function arguments and return value (jsval)
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* into the following based on each value's type tag:
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*
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* jsval returned
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* -------------------
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* STRING -> void *
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* INT -> int
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* DOUBLE -> double *
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* BOOLEAN -> int
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* OBJECT -> void *
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*
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* All are presented as void * for DTrace consumers to use, after shifting or
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* masking out the JavaScript type bits. This allows D scripts to use ints and
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* booleans directly and copyinstr() for string arguments, when types are known
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* beforehand.
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*
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* This is used by the function-args and function-rval probes, which also
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* provide raw (unmasked) jsvals should type info be useful from D scripts.
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*/
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#if 0
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static void *
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jsprobes_jsvaltovoid(JSContext *cx, const js::Value &argval)
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{
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if (argval.isNull())
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return (void *)JS_TYPE_STR(JSTYPE_NULL);
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if (argval.isUndefined())
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return (void *)JS_TYPE_STR(JSTYPE_VOID);
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if (argval.isBoolean())
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return (void *)argval.toBoolean();
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if (argval.isNumber()) {
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if (argval.isInt32())
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return (void *)argval.toInt32();
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// FIXME Now what?
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//return (void *)argval.toDouble();
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}
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return argval.toGCThing();
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}
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#endif
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const char *
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Probes::FunctionName(JSContext *cx, const JSFunction *fun, JSAutoByteString *bytes)
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{
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if (!fun)
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return nullName;
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JSAtom *atom = fun->atom;
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if (!atom) {
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/*
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* TODO: maybe do more work here to figure out the name of the property
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* or variable that held the anonymous function that we're calling, if anyone
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* cares; an easy workaround is to just give your anonymous functions names.
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*/
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return nullName;
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}
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return bytes->encode(cx, atom) ? bytes->ptr() : nullName;
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}
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#ifdef INCLUDE_MOZILLA_DTRACE
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/*
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* These functions call the DTrace macros for the JavaScript USDT probes.
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* Originally this code was inlined in the JavaScript code; however since
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* a number of operations are called, these have been placed into functions
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* to reduce any negative compiler optimization effect that the addition of
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* a number of usually unused lines of code would cause.
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*/
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void
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Probes::enterJSFunImpl(JSContext *cx, JSFunction *fun, JSScript *script)
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{
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JSAutoByteString funNameBytes;
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JAVASCRIPT_FUNCTION_ENTRY(ScriptFilename(script), FunctionClassname(fun),
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FunctionName(cx, fun, &funNameBytes));
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}
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void
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Probes::handleFunctionReturn(JSContext *cx, JSFunction *fun, JSScript *script)
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{
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JSAutoByteString funNameBytes;
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JAVASCRIPT_FUNCTION_RETURN(ScriptFilename(script), FunctionClassname(fun),
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FunctionName(cx, fun, &funNameBytes));
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}
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#endif
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bool
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Probes::startProfiling()
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{
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#ifdef MOZ_SHARK
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if (Shark::Start())
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return true;
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#endif
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return false;
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}
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void
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Probes::stopProfiling()
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{
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#ifdef MOZ_SHARK
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Shark::Stop();
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#endif
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}
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