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https://gitlab.winehq.org/wine/wine-gecko.git
synced 2024-09-13 09:24:08 -07:00
Introduced a JavaScript recording script that is loaded dynamically.
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be39054e45
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@ -2864,8 +2864,8 @@ void
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js_TraceTraceMonitor(JSTracer *trc, JSTraceMonitor *tm)
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{
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TRACE_JSVALS(trc, tm->loopTableSize, tm->loopTable, "loop table");
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if (tm->recorderScriptObject)
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JS_CALL_OBJECT_TRACER(trc, tm->recorderScriptObject, "recorder script object");
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if (tm->recorder)
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JS_CALL_OBJECT_TRACER(trc, tm->recorder, "recorder object");
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}
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void
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@ -2760,7 +2760,7 @@ JS_INTERPRET(JSContext *cx)
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JS_END_MACRO
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# define BEGIN_CASE(OP) L_##OP: \
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trace_stop(#OP);
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trace_stop(cx, #OP);
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# define TRACE_CASE(OP) L_##OP:
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# define END_CASE(OP) DO_NEXT_OP(OP##_LENGTH);
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# define END_VARLEN_CASE DO_NEXT_OP(len);
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@ -2780,7 +2780,7 @@ JS_INTERPRET(JSContext *cx)
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JS_END_MACRO
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# define BEGIN_CASE(OP) case OP: \
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trace_stop(#OP);
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trace_stop(cx, #OP);
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# define TRACE_CASE(OP) case OP:
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# define END_CASE(OP) END_CASE_LEN(OP##_LENGTH)
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# define END_CASE_LEN(n) END_CASE_LENX(n)
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@ -3046,6 +3046,7 @@ JS_INTERPRET(JSContext *cx)
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* compiled a tree for us, and in that case reuse that
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* tree instead of recording a new one.
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*/
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trace_start(cx, regs.pc);
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obj = js_NewObject(cx, &js_ObjectClass, NULL, NULL, 0);
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if (!obj)
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goto error;
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@ -6968,7 +6969,7 @@ JS_INTERPRET(JSContext *cx)
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#define DEFINE_HANDLER(handler) \
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handler: \
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trace_stop(#handler);
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trace_stop(cx, #handler);
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DEFINE_HANDLER(error)
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JS_ASSERT((size_t)(regs.pc - script->code) < script->length);
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@ -21,7 +21,7 @@
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* Andreas Gal <gal@uci.edu>
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*
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* Contributor(s):
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* Brendan Eich <brendan@mozilla.org
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* Brendan Eich <brendan@mozilla.org>
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*
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* Alternatively, the contents of this file may be used under the terms of
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* either of the GNU General Public License Version 2 or later (the "GPL"),
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@ -454,12 +454,19 @@ PRIMITIVE(guard_both_jsvals_are_string)(jsval& a, jsval& b)
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return JSVAL_IS_STRING(a) && JSVAL_IS_STRING(b);
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}
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static inline void
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PRIMITIVE(trace_start)(JSContext* cx, jsbytecode* pc)
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{
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jsval args[] = { native_pointer_to_jsval(pc) };
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js_CallRecorder(cx, "start", 1, args);
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}
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/*
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* Unsupported opcodes trigger a trace stop condition and cause the trace
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* recorder to abandon the current trace.
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*/
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static inline void
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PRIMITIVE(trace_stop)(const char* op)
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PRIMITIVE(trace_stop)(JSContext* cx, const char* op)
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{
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/* If we are not tracing, this is a no-op. */
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}
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@ -88,3 +88,27 @@ js_GrowLoopTable(JSContext* cx, uint32 index)
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}
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return JS_TRUE;
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}
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JSObject*
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js_GetRecorder(JSContext* cx)
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{
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JSTraceMonitor* tm = &JS_TRACE_MONITOR(cx);
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if (tm->recorder)
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return tm->recorder;
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JSScript* script = JS_CompileFile(cx, JS_GetGlobalObject(cx), "recorder.js");
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JS_ASSERT(script != NULL);
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jsval result;
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JSBool ok = JS_ExecuteScript(cx, JS_GetGlobalObject(cx), script, &result);
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JS_ASSERT(ok && JSVAL_IS_OBJECT(result));
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return tm->recorder = JSVAL_TO_OBJECT(result);
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}
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jsval
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js_CallRecorder(JSContext* cx, const char* fn, uintN argc, jsval* argv)
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{
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jsval rval;
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JSBool ok;
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ok = JS_CallFunctionName(cx, js_GetRecorder(cx), fn, argc, argv, &rval);
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JS_ASSERT(ok);
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return rval;
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}
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@ -57,8 +57,7 @@
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struct JSTraceMonitor {
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jsval *loopTable;
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uint32 loopTableSize;
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JSScript *recorderScript;
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JSObject *recorderScriptObject;
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JSObject *recorder;
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};
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#define TRACE_THRESHOLD 10
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@ -66,5 +65,17 @@ struct JSTraceMonitor {
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uint32 js_AllocateLoopTableSlot(JSRuntime *rt);
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void js_FreeLoopTableSlot(JSRuntime *rt, uint32 slot);
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JSBool js_GrowLoopTable(JSContext *cx, uint32 index);
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jsval js_CallRecorder(JSContext* cx, const char* fn, uintN argc, jsval* argv);
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/*
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* The recorder needs to keep track of native machine addresses. We speculate
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* that these addresses can be wrapped into a 31-bit integer, which is true
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* for most 32-bit machines.
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*/
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static inline jsval
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native_pointer_to_jsval(void* p) {
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JS_ASSERT(INT_FITS_IN_JSVAL((int)p));
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return INT_TO_JSVAL((int)p);
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}
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#endif /* jstracer_h___ */
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@ -414,14 +414,14 @@ guard_both_jsvals_are_string(jsval& a, jsval& b)
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return interp_guard_both_jsvals_are_string(a, b);
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}
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/*
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* Unsupported opcodes trigger a trace stop condition and cause the trace
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* recorder to abandon the current trace.
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*/
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static inline void
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trace_stop(const char* op)
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trace_start(JSContext* cx, jsbytecode* pc)
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{
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}
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static inline void
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trace_stop(JSContext* cx, const char* op)
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{
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/* If we are not tracing, this is a no-op. */
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}
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#endif /* jstracerinlines_h___ */
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45
js/src/recorder.js
Normal file
45
js/src/recorder.js
Normal file
@ -0,0 +1,45 @@
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/* -*- Mode: C; tab-width: 8; indent-tabs-mode: nil; c-basic-offset: 4 -*-
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* vim: set ts=8 sw=4 et tw=78:
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*
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* ***** BEGIN LICENSE BLOCK *****
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* Version: MPL 1.1/GPL 2.0/LGPL 2.1
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*
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* The contents of this file are subject to the Mozilla Public License Version
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* 1.1 (the "License"); you may not use this file except in compliance with
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* the License. You may obtain a copy of the License at
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* http://www.mozilla.org/MPL/
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*
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* Software distributed under the License is distributed on an "AS IS" basis,
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* WITHOUT WARRANTY OF ANY KIND, either express or implied. See the License
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* for the specific language governing rights and limitations under the
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* License.
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*
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* The Original Code is Mozilla SpiderMonkey JavaScript 1.9 code, released
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* May 28, 2008.
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*
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* The Initial Developer of the Original Code is
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* Andreas Gal <gal@uci.edu>
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*
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* Contributor(s):
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* Brendan Eich <brendan@mozilla.org>
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*
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* Alternatively, the contents of this file may be used under the terms of
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* either of the GNU General Public License Version 2 or later (the "GPL"),
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* or the GNU Lesser General Public License Version 2.1 or later (the "LGPL"),
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* in which case the provisions of the GPL or the LGPL are applicable instead
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* of those above. If you wish to allow use of your version of this file only
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* under the terms of either the GPL or the LGPL, and not to allow others to
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* use your version of this file under the terms of the MPL, indicate your
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* decision by deleting the provisions above and replace them with the notice
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* and other provisions required by the GPL or the LGPL. If you do not delete
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* the provisions above, a recipient may use your version of this file under
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* the terms of any one of the MPL, the GPL or the LGPL.
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*
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* ***** END LICENSE BLOCK ***** */
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eval({
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start: function(pc) {
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print("Recording at @" + pc);
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}
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})
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