| /* -*- Mode: C++; tab-width: 8; indent-tabs-mode: nil; c-basic-offset: 4 -*- |
| * vim: set ts=8 sts=4 et sw=4 tw=99: |
| * 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 |