thread_local Context* Context::current_context_ = nullptr;
-#ifndef WIN32
/* Install or disable alternate signal stack, for SIGSEGV handler. */
int Context::install_sigsegv_stack(stack_t* old_stack, bool enable)
{
stack.ss_flags = enable ? 0 : SS_DISABLE;
return sigaltstack(&stack, old_stack);
}
-#endif
Context* Context::self()
{