js/src/vm/Probes.cpp@b8a032363ba2 (annotated)
js/src/vm/Probes.cpp
Thu, 22 Jan 2015 13:21:57 +0100
- author
- Michael Schloh von Bennewitz <michael@schloh.com>
- date
- Thu, 22 Jan 2015 13:21:57 +0100
- branch
- TOR_BUG_9701
- changeset 15
- b8a032363ba2
- permissions
- -rw-r--r--
Incorporate requested changes from Mozilla in review:
https://bugzilla.mozilla.org/show_bug.cgi?id=1123480#c6
| michael@0 | 1 | /* -*- Mode: C++; tab-width: 8; indent-tabs-mode: nil; c-basic-offset: 4 -*- |
| michael@0 | 2 | * vim: set ts=8 sts=4 et sw=4 tw=99: |
| michael@0 | 3 | * This Source Code Form is subject to the terms of the Mozilla Public |
| michael@0 | 4 | * License, v. 2.0. If a copy of the MPL was not distributed with this |
| michael@0 | 5 | * file, You can obtain one at http://mozilla.org/MPL/2.0/. */ |
| michael@0 | 6 | |
| michael@0 | 7 | #include "vm/Probes-inl.h" |
| michael@0 | 8 | |
| michael@0 | 9 | #include "jscntxt.h" |
| michael@0 | 10 | |
| michael@0 | 11 | #ifdef INCLUDE_MOZILLA_DTRACE |
| michael@0 | 12 | #include "jsscriptinlines.h" |
| michael@0 | 13 | #endif |
| michael@0 | 14 | |
| michael@0 | 15 | #define TYPEOF(cx,v) (JSVAL_IS_NULL(v) ? JSTYPE_NULL : JS_TypeOfValue(cx,v)) |
| michael@0 | 16 | |
| michael@0 | 17 | using namespace js; |
| michael@0 | 18 | |
| michael@0 | 19 | const char probes::nullName[] = "(null)"; |
| michael@0 | 20 | const char probes::anonymousName[] = "(anonymous)"; |
| michael@0 | 21 | |
| michael@0 | 22 | bool probes::ProfilingActive = true; |
| michael@0 | 23 | |
| michael@0 | 24 | probes::JITReportGranularity |
| michael@0 | 25 | probes::JITGranularityRequested(JSContext *cx) |
| michael@0 | 26 | { |
| michael@0 | 27 | if (cx->runtime()->spsProfiler.enabled()) |
| michael@0 | 28 | return JITREPORT_GRANULARITY_LINE; |
| michael@0 | 29 | return JITREPORT_GRANULARITY_NONE; |
| michael@0 | 30 | } |
| michael@0 | 31 | |
| michael@0 | 32 | /* ICs are unregistered in a batch */ |
| michael@0 | 33 | void |
| michael@0 | 34 | probes::DiscardExecutableRegion(void *start, size_t size) |
| michael@0 | 35 | { |
| michael@0 | 36 | /* |
| michael@0 | 37 | * Not needed for SPS because ICs are disposed of when the normal JITChunk |
| michael@0 | 38 | * is disposed of |
| michael@0 | 39 | */ |
| michael@0 | 40 | } |
| michael@0 | 41 | |
| michael@0 | 42 | #ifdef INCLUDE_MOZILLA_DTRACE |
| michael@0 | 43 | static const char * |
| michael@0 | 44 | ScriptFilename(const JSScript *script) |
| michael@0 | 45 | { |
| michael@0 | 46 | if (!script) |
| michael@0 | 47 | return probes::nullName; |
| michael@0 | 48 | if (!script->filename()) |
| michael@0 | 49 | return probes::anonymousName; |
| michael@0 | 50 | return script->filename(); |
| michael@0 | 51 | } |
| michael@0 | 52 | |
| michael@0 | 53 | static const char * |
| michael@0 | 54 | FunctionName(JSContext *cx, JSFunction *fun, JSAutoByteString* bytes) |
| michael@0 | 55 | { |
| michael@0 | 56 | if (!fun) |
| michael@0 | 57 | return probes::nullName; |
| michael@0 | 58 | if (!fun->displayAtom()) |
| michael@0 | 59 | return probes::anonymousName; |
| michael@0 | 60 | return bytes->encodeLatin1(cx, fun->displayAtom()) ? bytes->ptr() : probes::nullName; |
| michael@0 | 61 | } |
| michael@0 | 62 | |
| michael@0 | 63 | /* |
| michael@0 | 64 | * These functions call the DTrace macros for the JavaScript USDT probes. |
| michael@0 | 65 | * Originally this code was inlined in the JavaScript code; however since |
| michael@0 | 66 | * a number of operations are called, these have been placed into functions |
| michael@0 | 67 | * to reduce any negative compiler optimization effect that the addition of |
| michael@0 | 68 | * a number of usually unused lines of code would cause. |
| michael@0 | 69 | */ |
| michael@0 | 70 | void |
| michael@0 | 71 | probes::DTraceEnterJSFun(JSContext *cx, JSFunction *fun, JSScript *script) |
| michael@0 | 72 | { |
| michael@0 | 73 | JSAutoByteString funNameBytes; |
| michael@0 | 74 | JAVASCRIPT_FUNCTION_ENTRY(ScriptFilename(script), probes::nullName, |
| michael@0 | 75 | FunctionName(cx, fun, &funNameBytes)); |
| michael@0 | 76 | } |
| michael@0 | 77 | |
| michael@0 | 78 | void |
| michael@0 | 79 | probes::DTraceExitJSFun(JSContext *cx, JSFunction *fun, JSScript *script) |
| michael@0 | 80 | { |
| michael@0 | 81 | JSAutoByteString funNameBytes; |
| michael@0 | 82 | JAVASCRIPT_FUNCTION_RETURN(ScriptFilename(script), probes::nullName, |
| michael@0 | 83 | FunctionName(cx, fun, &funNameBytes)); |
| michael@0 | 84 | } |
| michael@0 | 85 | #endif |
