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/* -*- Mode: C++; tab-width: 8; indent-tabs-mode: nil; c-basic-offset: 4 -*-
* This Source Code Form is subject to the terms of the Mozilla Public
* License, v. 2.0. If a copy of the MPL was not distributed with this
* file, You can obtain one at http://mozilla.org/MPL/2.0/. */
#include "vm/Probes-inl.h"
#include "jscntxt.h"
#ifdef INCLUDE_MOZILLA_DTRACE
#include "jsscriptinlines.h"
#endif
#define TYPEOF(cx,v) (v.isNull() ? JSTYPE_NULL : JS_TypeOfValue(cx,v))
using namespace js;
const char probes::nullName[] = "(null)";
const char probes::anonymousName[] = "(anonymous)";
bool probes::ProfilingActive = true;
#ifdef INCLUDE_MOZILLA_DTRACE
static const char*
ScriptFilename(const JSScript* script)
{
if (!script)
return probes::nullName;
if (!script->filename())
return probes::anonymousName;
return script->filename();
}
static const char*
FunctionName(JSContext* cx, JSFunction* fun, JSAutoByteString* bytes)
{
if (!fun)
return probes::nullName;
if (!fun->displayAtom())
return probes::anonymousName;
return bytes->encodeLatin1(cx, fun->displayAtom()) ? bytes->ptr() : probes::nullName;
}
/*
* These functions call the DTrace macros for the JavaScript USDT probes.
* Originally this code was inlined in the JavaScript code; however since
* a number of operations are called, these have been placed into functions
* to reduce any negative compiler optimization effect that the addition of
* a number of usually unused lines of code would cause.
*/
void
probes::DTraceEnterJSFun(JSContext* cx, JSFunction* fun, JSScript* script)
{
JSAutoByteString funNameBytes;
JAVASCRIPT_FUNCTION_ENTRY(ScriptFilename(script), probes::nullName,
FunctionName(cx, fun, &funNameBytes));
}
void
probes::DTraceExitJSFun(JSContext* cx, JSFunction* fun, JSScript* script)
{
JSAutoByteString funNameBytes;
JAVASCRIPT_FUNCTION_RETURN(ScriptFilename(script), probes::nullName,
FunctionName(cx, fun, &funNameBytes));
}
#endif
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