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Alternative way to deal with allocating reactor vs early init

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of "local_engine" pointer that does not mix allocation types.
This commit is contained in:
Calle Wilund
2015-03-09 19:31:23 +01:00
parent 2642f82d89
commit 9d93dd1ac3
1 changed files with 19 additions and 7 deletions
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26
core/reactor.cc
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@@ -1318,16 +1318,28 @@ void smp::pin(unsigned cpu_id) {
#endif
void smp::allocate_reactor() {
static thread_local std::unique_ptr<reactor> reactor_holder;
// we cannot just write "local_engin = new reactor" since reactor's constructor
// uses local_engine
struct set_local_engine {
set_local_engine(reactor * r) {
local_engine = r;
}
~set_local_engine() {
local_engine = nullptr;
}
};
class local_reactor : private set_local_engine, public reactor {
public:
local_reactor()
: set_local_engine(this)
{}
};
static thread_local std::unique_ptr<local_reactor> reactor_holder;
assert(!reactor_holder);
// we cannot just write "local_engin = new reactor" since reactor's constructor
// uses local_engine
auto buf = new (with_alignment(64)) char[sizeof(reactor)];
local_engine = reinterpret_cast<reactor*>(buf);
new (buf) reactor;
reactor_holder.reset(local_engine);
reactor_holder.reset(new local_reactor());
}
void smp::cleanup() {