michael@0: /* -*- Mode: C++; tab-width: 8; indent-tabs-mode: nil; c-basic-offset: 4 -*-
michael@0:  * vim: set ts=8 sts=4 et sw=4 tw=99:
michael@0:  * This Source Code Form is subject to the terms of the Mozilla Public
michael@0:  * License, v. 2.0. If a copy of the MPL was not distributed with this
michael@0:  * file, You can obtain one at http://mozilla.org/MPL/2.0/. */
michael@0: 
michael@0: #include "vm/Probes-inl.h"
michael@0: 
michael@0: #include "jscntxt.h"
michael@0: 
michael@0: #ifdef INCLUDE_MOZILLA_DTRACE
michael@0: #include "jsscriptinlines.h"
michael@0: #endif
michael@0: 
michael@0: #define TYPEOF(cx,v)    (JSVAL_IS_NULL(v) ? JSTYPE_NULL : JS_TypeOfValue(cx,v))
michael@0: 
michael@0: using namespace js;
michael@0: 
michael@0: const char probes::nullName[] = "(null)";
michael@0: const char probes::anonymousName[] = "(anonymous)";
michael@0: 
michael@0: bool probes::ProfilingActive = true;
michael@0: 
michael@0: probes::JITReportGranularity
michael@0: probes::JITGranularityRequested(JSContext *cx)
michael@0: {
michael@0:     if (cx->runtime()->spsProfiler.enabled())
michael@0:         return JITREPORT_GRANULARITY_LINE;
michael@0:     return JITREPORT_GRANULARITY_NONE;
michael@0: }
michael@0: 
michael@0: /* ICs are unregistered in a batch */
michael@0: void
michael@0: probes::DiscardExecutableRegion(void *start, size_t size)
michael@0: {
michael@0:     /*
michael@0:      * Not needed for SPS because ICs are disposed of when the normal JITChunk
michael@0:      * is disposed of
michael@0:      */
michael@0: }
michael@0: 
michael@0: #ifdef INCLUDE_MOZILLA_DTRACE
michael@0: static const char *
michael@0: ScriptFilename(const JSScript *script)
michael@0: {
michael@0:     if (!script)
michael@0:         return probes::nullName;
michael@0:     if (!script->filename())
michael@0:         return probes::anonymousName;
michael@0:     return script->filename();
michael@0: }
michael@0: 
michael@0: static const char *
michael@0: FunctionName(JSContext *cx, JSFunction *fun, JSAutoByteString* bytes)
michael@0: {
michael@0:     if (!fun)
michael@0:         return probes::nullName;
michael@0:     if (!fun->displayAtom())
michael@0:         return probes::anonymousName;
michael@0:     return bytes->encodeLatin1(cx, fun->displayAtom()) ? bytes->ptr() : probes::nullName;
michael@0: }
michael@0: 
michael@0: /*
michael@0:  * These functions call the DTrace macros for the JavaScript USDT probes.
michael@0:  * Originally this code was inlined in the JavaScript code; however since
michael@0:  * a number of operations are called, these have been placed into functions
michael@0:  * to reduce any negative compiler optimization effect that the addition of
michael@0:  * a number of usually unused lines of code would cause.
michael@0:  */
michael@0: void
michael@0: probes::DTraceEnterJSFun(JSContext *cx, JSFunction *fun, JSScript *script)
michael@0: {
michael@0:     JSAutoByteString funNameBytes;
michael@0:     JAVASCRIPT_FUNCTION_ENTRY(ScriptFilename(script), probes::nullName,
michael@0:                               FunctionName(cx, fun, &funNameBytes));
michael@0: }
michael@0: 
michael@0: void
michael@0: probes::DTraceExitJSFun(JSContext *cx, JSFunction *fun, JSScript *script)
michael@0: {
michael@0:     JSAutoByteString funNameBytes;
michael@0:     JAVASCRIPT_FUNCTION_RETURN(ScriptFilename(script), probes::nullName,
michael@0:                                FunctionName(cx, fun, &funNameBytes));
michael@0: }
michael@0: #endif