Ejemplo n.º 1
0
bool
ModuleGenerator::finishFuncExports()
{
    // ModuleGenerator::exportedFuncs_ is an unordered HashSet. The
    // FuncExportVector stored in Metadata needs to be stored sorted by
    // function index to allow O(log(n)) lookup at runtime.

    Uint32Vector funcIndices;
    if (!funcIndices.reserve(exportedFuncs_.count()))
        return false;

    for (Uint32Set::Range r = exportedFuncs_.all(); !r.empty(); r.popFront())
        funcIndices.infallibleAppend(r.front());

    std::sort(funcIndices.begin(), funcIndices.end());

    MOZ_ASSERT(metadata_->funcExports.empty());
    if (!metadata_->funcExports.reserve(exportedFuncs_.count()))
        return false;

    for (uint32_t funcIndex : funcIndices) {
        Sig sig;
        if (!sig.clone(funcSig(funcIndex)))
            return false;

        metadata_->funcExports.infallibleEmplaceBack(Move(sig),
                                                     funcIndex,
                                                     funcIndexToCodeRange_[funcIndex]);
    }

    return true;
}
Ejemplo n.º 2
0
bool
ModuleGenerator::finishFuncExports()
{
    // In addition to all the functions that were explicitly exported, any
    // element of an exported table is also exported.

    for (ElemSegment& elems : elemSegments_) {
        if (shared_->tables[elems.tableIndex].external) {
            for (uint32_t funcIndex : elems.elemFuncIndices) {
                if (!exportedFuncs_.put(funcIndex))
                    return false;
            }
        }
    }

    // ModuleGenerator::exportedFuncs_ is an unordered HashSet. The
    // FuncExportVector stored in Metadata needs to be stored sorted by
    // function index to allow O(log(n)) lookup at runtime.

    Uint32Vector sorted;
    if (!sorted.reserve(exportedFuncs_.count()))
        return false;

    for (Uint32Set::Range r = exportedFuncs_.all(); !r.empty(); r.popFront())
        sorted.infallibleAppend(r.front());

    std::sort(sorted.begin(), sorted.end());

    MOZ_ASSERT(metadata_->funcExports.empty());
    if (!metadata_->funcExports.reserve(sorted.length()))
        return false;

    for (uint32_t funcIndex : sorted) {
        Sig sig;
        if (!sig.clone(funcSig(funcIndex)))
            return false;

        uint32_t codeRangeIndex = funcToCodeRange_[funcIndex];
        metadata_->funcExports.infallibleEmplaceBack(Move(sig), funcIndex, codeRangeIndex);
    }

    return true;
}