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Factor out js_ContinueRecording from js_LoopEdge.

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This commit is contained in:
Andreas Gal 2008-08-01 22:39:52 -07:00
parent 1157b3a775
commit 471c0b9fbb
1 changed files with 31 additions and 28 deletions
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59
js/src/jstracer.cpp
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@ -1444,40 +1444,43 @@ js_AttemptToExtendTree(JSContext* cx, GuardRecord* lr, Fragment* f)
return false;
}
static bool
js_ContinueRecording(JSContext* cx, TraceRecorder* r, jsbytecode* oldpc)
{
#ifdef JS_THREADSAFE
if (OBJ_SCOPE(JS_GetGlobalForObject(cx, cx->fp->scopeChain))->title.ownercx != cx) {
#ifdef DEBUG
printf("Global object not owned by this context.\n");
#endif
return false; /* we stay away from shared global objects */
}
#endif
if (r->isLoopHeader(cx)) { /* did we hit the start point? */
AUDIT(traceCompleted);
r->closeLoop(JS_TRACE_MONITOR(cx).fragmento);
js_DeleteRecorder(cx);
return false; /* done recording */
}
if (++r->backEdgeCount >= MAX_XJUMPS) {
AUDIT(returnToDifferentLoopHeader);
debug_only(printf("loop edge %d -> %d, header %d\n",
oldpc - cx->fp->script->code,
cx->fp->regs->pc - cx->fp->script->code,
(jsbytecode*)r->getFragment()->root->ip - cx->fp->script->code));
js_AbortRecording(cx, oldpc, "Loop edge does not return to header");
return false; /* done recording */
}
return true; /* keep recording (attempting to unroll inner loop) */
}
bool
js_LoopEdge(JSContext* cx, jsbytecode* oldpc, uintN& inlineCallCount)
{
JSTraceMonitor* tm = &JS_TRACE_MONITOR(cx);
/* is the recorder currently active? */
if (tm->recorder) {
TraceRecorder* r = tm->recorder;
#ifdef JS_THREADSAFE
/* XXX should this test not be earlier, to avoid even recording? */
if (OBJ_SCOPE(JS_GetGlobalForObject(cx, cx->fp->scopeChain))->title.ownercx != cx) {
#ifdef DEBUG
printf("Global object not owned by this context.\n");
#endif
return false; /* we stay away from shared global objects */
}
#endif
if (r->isLoopHeader(cx)) { /* did we hit the start point? */
AUDIT(traceCompleted);
r->closeLoop(JS_TRACE_MONITOR(cx).fragmento);
js_DeleteRecorder(cx);
return false; /* done recording */
}
if (++r->backEdgeCount >= MAX_XJUMPS) {
AUDIT(returnToDifferentLoopHeader);
debug_only(printf("loop edge %d -> %d, header %d\n",
oldpc - cx->fp->script->code,
cx->fp->regs->pc - cx->fp->script->code,
(jsbytecode*)r->getFragment()->root->ip - cx->fp->script->code));
js_AbortRecording(cx, oldpc, "Loop edge does not return to header");
return false; /* done recording */
}
return true; /* keep recording (attempting to unroll inner loop) */
}
if (tm->recorder)
return js_ContinueRecording(cx, tm->recorder, oldpc);
Fragment* f = tm->fragmento->getLoop(cx->fp->regs->pc);
if (!f->code()) {