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Atmosphere/stratosphere/libstratosphere/source/waitablemanager.cpp

105 lines
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3.4 KiB
C++

#include <switch.h>
#include <algorithm>
#include <stratosphere/waitablemanager.hpp>
unsigned int WaitableManager::get_num_signalable() {
unsigned int n = 0;
for (auto & waitable : this->waitables) {
n += waitable->get_num_waitables();
}
return n;
}
void WaitableManager::add_waitable(IWaitable *waitable) {
this->waitables.push_back(waitable);
}
void WaitableManager::process_internal(bool break_on_timeout) {
std::vector<IWaitable *> signalables;
std::vector<Handle> handles;
int handle_index = 0;
Result rc;
while (1) {
/* Create vector of signalable items. */
signalables.resize(this->get_num_signalable(), NULL);
unsigned int n = 0;
for (auto & waitable : this->waitables) {
waitable->get_waitables(signalables.data() + n);
n += waitable->get_num_waitables();
}
/* Sort signalables by priority. */
std::sort(signalables.begin(), signalables.end(), IWaitable::compare);
/* Copy out handles. */
handles.resize(signalables.size());
std::transform(signalables.begin(), signalables.end(), handles.begin(), [](IWaitable *w) { return w->get_handle(); });
rc = svcWaitSynchronization(&handle_index, handles.data(), signalables.size(), this->timeout);
if (R_SUCCEEDED(rc)) {
/* Handle a signaled waitable. */
/* TODO: What timeout should be passed here? */
rc = signalables[handle_index]->handle_signaled(0);
for (int i = 0; i < handle_index; i++) {
signalables[i]->update_priority();
}
} else if (rc == 0xEA01) {
/* Timeout. */
for (auto & waitable : signalables) {
waitable->update_priority();
}
if (break_on_timeout) {
return;
}
} else if (rc != 0xF601) {
/* TODO: Panic. When can this happen? */
}
if (rc == 0xF601) {
/* handles[handle_index] was closed! */
/* Close the handle. */
svcCloseHandle(handles[handle_index]);
/* If relevant, remove from waitables. */
this->waitables.erase(std::remove(this->waitables.begin(), this->waitables.end(), signalables[handle_index]), this->waitables.end());
/* Delete it. */
if (signalables[handle_index]->has_parent()) {
signalables[handle_index]->get_parent()->delete_child(signalables[handle_index]);
} else {
delete signalables[handle_index];
}
/* If relevant, remove from signalables. */
signalables.erase(std::remove(signalables.begin(), signalables.end(), signalables[handle_index]), signalables.end());
for (int i = 0; i < handle_index; i++) {
signalables[i]->update_priority();
}
}
/* Do deferred callback for each waitable. */
for (auto & waitable : signalables) {
if (waitable->get_deferred()) {
waitable->handle_deferred();
}
}
}
}
void WaitableManager::process() {
WaitableManager::process_internal(false);
}
void WaitableManager::process_until_timeout() {
WaitableManager::process_internal(true);
}