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files >> //proc/thread-self/root/opt/hc_python/lib/python3.8/site-packages/greenlet/TMainGreenlet.cpp
/* -*- indent-tabs-mode: nil; tab-width: 4; -*- */ /** * Implementation of greenlet::MainGreenlet. * * Format with: * clang-format -i --style=file src/greenlet/greenlet.c * * * Fix missing braces with: * clang-tidy src/greenlet/greenlet.c -fix -checks="readability-braces-around-statements" */ #ifndef T_MAIN_GREENLET_CPP #define T_MAIN_GREENLET_CPP #include "TGreenlet.hpp" // Protected by the GIL. Incremented when we create a main greenlet, // in a new thread, decremented when it is destroyed. static Py_ssize_t G_TOTAL_MAIN_GREENLETS; namespace greenlet { greenlet::PythonAllocator<MainGreenlet> MainGreenlet::allocator; void* MainGreenlet::operator new(size_t UNUSED(count)) { return allocator.allocate(1); } void MainGreenlet::operator delete(void* ptr) { return allocator.deallocate(static_cast<MainGreenlet*>(ptr), 1); } MainGreenlet::MainGreenlet(PyGreenlet* p, ThreadState* state) : Greenlet(p, StackState::make_main()), _self(p), _thread_state(state) { G_TOTAL_MAIN_GREENLETS++; } MainGreenlet::~MainGreenlet() { G_TOTAL_MAIN_GREENLETS--; this->tp_clear(); } ThreadState* MainGreenlet::thread_state() const noexcept { return this->_thread_state; } void MainGreenlet::thread_state(ThreadState* t) noexcept { assert(!t); this->_thread_state = t; } const BorrowedMainGreenlet MainGreenlet::main_greenlet() const { return this->_self; } BorrowedMainGreenlet MainGreenlet::find_main_greenlet_in_lineage() const { return BorrowedMainGreenlet(this->_self); } bool MainGreenlet::was_running_in_dead_thread() const noexcept { return !this->_thread_state; } OwnedObject MainGreenlet::g_switch() { try { this->check_switch_allowed(); } catch (const PyErrOccurred&) { this->release_args(); throw; } switchstack_result_t err = this->g_switchstack(); if (err.status < 0) { // XXX: This code path is untested, but it is shared // with the UserGreenlet path that is tested. return this->on_switchstack_or_initialstub_failure( this, err, true, // target was me false // was initial stub ); } return err.the_new_current_greenlet->g_switch_finish(err); } int MainGreenlet::tp_traverse(visitproc visit, void* arg) { if (this->_thread_state) { // we've already traversed main, (self), don't do it again. int result = this->_thread_state->tp_traverse(visit, arg, false); if (result) { return result; } } return Greenlet::tp_traverse(visit, arg); } const OwnedObject& MainGreenlet::run() const { throw AttributeError("Main greenlets do not have a run attribute."); } void MainGreenlet::run(const BorrowedObject UNUSED(nrun)) { throw AttributeError("Main greenlets do not have a run attribute."); } void MainGreenlet::parent(const BorrowedObject raw_new_parent) { if (!raw_new_parent) { throw AttributeError("can't delete attribute"); } throw AttributeError("cannot set the parent of a main greenlet"); } const OwnedGreenlet MainGreenlet::parent() const { return OwnedGreenlet(); // null becomes None } }; // namespace greenlet #endif
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