The Tor Browser: js/src/vm/Probes-inl.h@6474c204b198

Cloned upstream origin tor-browser at tor-browser-31.3.0esr-4.5-1-build1
revision ID fc1c9ff7c1b2defdbc039f12214767608f46423f for hacking purpose.

     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/. */

     7 #ifndef vm_Probes_inl_h

     8 #define vm_Probes_inl_h

    10 #include "vm/Probes.h"

    12 #include "jscntxt.h"

    14 namespace js {

    16 /*

    17  * Many probe handlers are implemented inline for minimal performance impact,

    18  * especially important when no backends are enabled.

    19  */

    21 inline bool

    22 probes::CallTrackingActive(JSContext *cx)

    23 {

    24 #ifdef INCLUDE_MOZILLA_DTRACE

    25     if (JAVASCRIPT_FUNCTION_ENTRY_ENABLED() || JAVASCRIPT_FUNCTION_RETURN_ENABLED())

    26         return true;

    27 #endif

    28 #ifdef MOZ_TRACE_JSCALLS

    29     if (cx->functionCallback)

    30         return true;

    31 #endif

    32     return false;

    33 }

    35 inline bool

    36 probes::WantNativeAddressInfo(JSContext *cx)

    37 {

    38     return (cx->reportGranularity >= JITREPORT_GRANULARITY_FUNCTION &&

    39             JITGranularityRequested(cx) >= JITREPORT_GRANULARITY_FUNCTION);

    40 }

    42 inline bool

    43 probes::EnterScript(JSContext *cx, JSScript *script, JSFunction *maybeFun,

    44                     InterpreterFrame *fp)

    45 {

    46 #ifdef INCLUDE_MOZILLA_DTRACE

    47     if (JAVASCRIPT_FUNCTION_ENTRY_ENABLED())

    48         DTraceEnterJSFun(cx, maybeFun, script);

    49 #endif

    50 #ifdef MOZ_TRACE_JSCALLS

    51     cx->doFunctionCallback(maybeFun, script, 1);

    52 #endif

    54     JSRuntime *rt = cx->runtime();

    55     if (rt->spsProfiler.enabled()) {

    56         if (!rt->spsProfiler.enter(script, maybeFun))

    57             return false;

    58         JS_ASSERT_IF(!fp->isGeneratorFrame(), !fp->hasPushedSPSFrame());

    59         fp->setPushedSPSFrame();

    60     }

    62     return true;

    63 }

    65 inline void

    66 probes::ExitScript(JSContext *cx, JSScript *script, JSFunction *maybeFun, bool popSPSFrame)

    67 {

    68 #ifdef INCLUDE_MOZILLA_DTRACE

    69     if (JAVASCRIPT_FUNCTION_RETURN_ENABLED())

    70         DTraceExitJSFun(cx, maybeFun, script);

    71 #endif

    72 #ifdef MOZ_TRACE_JSCALLS

    73     cx->doFunctionCallback(maybeFun, script, 0);

    74 #endif

    76     if (popSPSFrame)

    77         cx->runtime()->spsProfiler.exit(script, maybeFun);

    78 }

    80 inline bool

    81 probes::StartExecution(JSScript *script)

    82 {

    83     bool ok = true;

    85 #ifdef INCLUDE_MOZILLA_DTRACE

    86     if (JAVASCRIPT_EXECUTE_START_ENABLED())

    87         JAVASCRIPT_EXECUTE_START((script->filename() ? (char *)script->filename() : nullName),

    88                                  script->lineno());

    89 #endif

    91     return ok;

    92 }

    94 inline bool

    95 probes::StopExecution(JSScript *script)

    96 {

    97     bool ok = true;

    99 #ifdef INCLUDE_MOZILLA_DTRACE

   100     if (JAVASCRIPT_EXECUTE_DONE_ENABLED())

   101         JAVASCRIPT_EXECUTE_DONE((script->filename() ? (char *)script->filename() : nullName),

   102                                 script->lineno());

   103 #endif

   105     return ok;

   106 }

   108 } /* namespace js */

   110 #endif /* vm_Probes_inl_h */

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