/*
* If the jit maturity counter is enabled, update it with the current amount of
* emitted code.
*/
void reportJitMaturity(const CodeCache& code) {
auto static jitMaturityCounter = ServiceData::createCounter("jit.maturity");
// Optimized translations are faster than profiling translations, which are
// faster than the interpreter. But when optimized translations are
// generated, some profiling translations will become dead. We assume the
// incremental value of an optimized translation over the corresponding
// profiling translations is comparable to the incremental value of a
// profiling translation of similar size; thus we don't have to apply
// different weights to code in different regions.
auto const codeSize =
code.hot().used() + code.main().used() + code.prof().used();
if (jitMaturityCounter) {
// EvalJitMatureSize is supposed to to be set to approximately 20% of the
// code that will give us full performance, so recover the "fully mature"
// size with some math.
auto const fullSize = RuntimeOption::EvalJitMatureSize * 5;
auto const after = codeSize >= fullSize ? 100
: (codeSize * 100 / fullSize);
auto const before = jitMaturityCounter->getValue();
if (after > before) jitMaturityCounter->setValue(after);
}
if (!s_loggedJitMature.load(std::memory_order_relaxed) &&
StructuredLog::enabled() &&
codeSize >= RuntimeOption::EvalJitMatureSize &&
!s_loggedJitMature.exchange(true, std::memory_order_relaxed)) {
StructuredLogEntry cols;
cols.setInt("jit_mature_sec", time(nullptr) - HttpServer::StartTime);
StructuredLog::log("hhvm_warmup", cols);
}
}
void relocateStubs(TransLoc& loc, TCA frozenStart, TCA frozenEnd,
RelocationInfo& rel, CodeCache& cache,
CodeGenFixups& fixups) {
auto const stubSize = svcreq::stub_size();
for (auto addr : fixups.m_reusedStubs) {
if (!loc.contains(addr)) continue;
always_assert(frozenStart <= addr);
CodeBlock dest;
dest.init(cache.frozen().frontier(), stubSize, "New Stub");
x64::relocate(rel, dest, addr, addr + stubSize, fixups, nullptr);
cache.frozen().skip(stubSize);
if (addr != frozenStart) {
rel.recordRange(frozenStart, addr, frozenStart, addr);
}
frozenStart = addr + stubSize;
}
if (frozenStart != frozenEnd) {
rel.recordRange(frozenStart, frozenEnd, frozenStart, frozenEnd);
}
x64::adjustForRelocation(rel);
x64::adjustMetaDataForRelocation(rel, nullptr, fixups);
x64::adjustCodeForRelocation(rel, fixups);
}
UnlinkedFunctionExecutable* UnlinkedFunctionExecutable::fromGlobalCode(const Identifier& name, ExecState* exec, Debugger*, const SourceCode& source, JSObject** exception)
{
ParserError error;
CodeCache* codeCache = exec->globalData().codeCache();
UnlinkedFunctionExecutable* executable = codeCache->getFunctionExecutableFromGlobalCode(exec->globalData(), name, source, error);
if (error.m_type != ParserError::ErrorNone) {
*exception = error.toErrorObject(exec->lexicalGlobalObject(), source);
return 0;
}
return executable;
}
UnlinkedFunctionExecutable* UnlinkedFunctionExecutable::fromGlobalCode(const Identifier& name, ExecState* exec, Debugger*, const SourceCode& source, JSObject** exception)
{
ParserError error;
VM& vm = exec->vm();
CodeCache* codeCache = vm.codeCache();
UnlinkedFunctionExecutable* executable = codeCache->getFunctionExecutableFromGlobalCode(vm, name, source, error);
if (exec->lexicalGlobalObject()->hasDebugger())
exec->lexicalGlobalObject()->debugger()->sourceParsed(exec, source.provider(), error.m_line, error.m_message);
if (error.m_type != ParserError::ErrorNone) {
*exception = error.toErrorObject(exec->lexicalGlobalObject(), source);
return 0;
}
return executable;
}
UnlinkedFunctionExecutable* UnlinkedFunctionExecutable::fromGlobalCode(
const Identifier& name, ExecState& exec, const SourceCode& source,
JSObject*& exception, int overrideLineNumber)
{
ParserError error;
VM& vm = exec.vm();
CodeCache* codeCache = vm.codeCache();
UnlinkedFunctionExecutable* executable = codeCache->getFunctionExecutableFromGlobalCode(vm, name, source, error);
auto& globalObject = *exec.lexicalGlobalObject();
if (globalObject.hasDebugger())
globalObject.debugger()->sourceParsed(&exec, source.provider(), error.line(), error.message());
if (error.isValid()) {
exception = error.toErrorObject(&globalObject, source, overrideLineNumber);
return nullptr;
}
return executable;
}
TransRelocInfo toTRI(const CodeCache& code) {
TransRelocInfo tri;
tri.sk = SrcKey(skInt);
tri.argNum = argNum;
tri.coldStart = code.base() + coldRange.first;
tri.coldEnd = code.base() + coldRange.second;
for (auto& ib : incomingBranches) {
tri.incomingBranches.push_back(IncomingBranch(ib));
}
for (auto& ai : addressImmediates) {
tri.fixups.addressImmediates.insert(ai + code.base());
}
for (auto& cp : codePointers) {
tri.fixups.codePointers.insert((TCA*)cp);
}
for (auto v : alignments) {
tri.fixups.alignments.emplace(v.first + code.base(), v.second);
}
return tri;
}