The Tor Browser / file comparison
comparison: js/src/vm/Probes.cpp
js/src/vm/Probes.cpp
- branch
- TOR_BUG_9701
- changeset 15
- b8a032363ba2
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| -1:000000000000 | 0:abb33ff115ba |
|---|---|
| 1 /* -*- Mode: C++; tab-width: 8; indent-tabs-mode: nil; c-basic-offset: 4 -*- | |
| 2 * vim: set ts=8 sts=4 et sw=4 tw=99: | |
| 3 * This Source Code Form is subject to the terms of the Mozilla Public | |
| 4 * License, v. 2.0. If a copy of the MPL was not distributed with this | |
| 5 * file, You can obtain one at http://mozilla.org/MPL/2.0/. */ | |
| 6 | |
| 7 #include "vm/Probes-inl.h" | |
| 8 | |
| 9 #include "jscntxt.h" | |
| 10 | |
| 11 #ifdef INCLUDE_MOZILLA_DTRACE | |
| 12 #include "jsscriptinlines.h" | |
| 13 #endif | |
| 14 | |
| 15 #define TYPEOF(cx,v) (JSVAL_IS_NULL(v) ? JSTYPE_NULL : JS_TypeOfValue(cx,v)) | |
| 16 | |
| 17 using namespace js; | |
| 18 | |
| 19 const char probes::nullName[] = "(null)"; | |
| 20 const char probes::anonymousName[] = "(anonymous)"; | |
| 21 | |
| 22 bool probes::ProfilingActive = true; | |
| 23 | |
| 24 probes::JITReportGranularity | |
| 25 probes::JITGranularityRequested(JSContext *cx) | |
| 26 { | |
| 27 if (cx->runtime()->spsProfiler.enabled()) | |
| 28 return JITREPORT_GRANULARITY_LINE; | |
| 29 return JITREPORT_GRANULARITY_NONE; | |
| 30 } | |
| 31 | |
| 32 /* ICs are unregistered in a batch */ | |
| 33 void | |
| 34 probes::DiscardExecutableRegion(void *start, size_t size) | |
| 35 { | |
| 36 /* | |
| 37 * Not needed for SPS because ICs are disposed of when the normal JITChunk | |
| 38 * is disposed of | |
| 39 */ | |
| 40 } | |
| 41 | |
| 42 #ifdef INCLUDE_MOZILLA_DTRACE | |
| 43 static const char * | |
| 44 ScriptFilename(const JSScript *script) | |
| 45 { | |
| 46 if (!script) | |
| 47 return probes::nullName; | |
| 48 if (!script->filename()) | |
| 49 return probes::anonymousName; | |
| 50 return script->filename(); | |
| 51 } | |
| 52 | |
| 53 static const char * | |
| 54 FunctionName(JSContext *cx, JSFunction *fun, JSAutoByteString* bytes) | |
| 55 { | |
| 56 if (!fun) | |
| 57 return probes::nullName; | |
| 58 if (!fun->displayAtom()) | |
| 59 return probes::anonymousName; | |
| 60 return bytes->encodeLatin1(cx, fun->displayAtom()) ? bytes->ptr() : probes::nullName; | |
| 61 } | |
| 62 | |
| 63 /* | |
| 64 * These functions call the DTrace macros for the JavaScript USDT probes. | |
| 65 * Originally this code was inlined in the JavaScript code; however since | |
| 66 * a number of operations are called, these have been placed into functions | |
| 67 * to reduce any negative compiler optimization effect that the addition of | |
| 68 * a number of usually unused lines of code would cause. | |
| 69 */ | |
| 70 void | |
| 71 probes::DTraceEnterJSFun(JSContext *cx, JSFunction *fun, JSScript *script) | |
| 72 { | |
| 73 JSAutoByteString funNameBytes; | |
| 74 JAVASCRIPT_FUNCTION_ENTRY(ScriptFilename(script), probes::nullName, | |
| 75 FunctionName(cx, fun, &funNameBytes)); | |
| 76 } | |
| 77 | |
| 78 void | |
| 79 probes::DTraceExitJSFun(JSContext *cx, JSFunction *fun, JSScript *script) | |
| 80 { | |
| 81 JSAutoByteString funNameBytes; | |
| 82 JAVASCRIPT_FUNCTION_RETURN(ScriptFilename(script), probes::nullName, | |
| 83 FunctionName(cx, fun, &funNameBytes)); | |
| 84 } | |
| 85 #endif |
