eventcore/source/eventcore/core.d
Sönke Ludwig e2e8bf30aa Change shutdown behavior to allow graceful handle leaks.
This avoids crashing in case of any handle references left-over in GC allocated memory that gets finalized after module destructors have already been run.
2018-10-26 20:40:22 +02:00

85 lines
2 KiB
D

module eventcore.core;
public import eventcore.driver;
import eventcore.drivers.posix.select;
import eventcore.drivers.posix.epoll;
import eventcore.drivers.posix.kqueue;
import eventcore.drivers.libasync;
import eventcore.drivers.winapi.driver;
import eventcore.internal.utils : mallocT, freeT;
version (EventcoreEpollDriver) alias NativeEventDriver = EpollEventDriver;
else version (EventcoreKqueueDriver) alias NativeEventDriver = KqueueEventDriver;
else version (EventcoreWinAPIDriver) alias NativeEventDriver = WinAPIEventDriver;
else version (EventcoreLibasyncDriver) alias NativeEventDriver = LibasyncEventDriver;
else version (EventcoreSelectDriver) alias NativeEventDriver = SelectEventDriver;
else alias NativeEventDriver = EventDriver;
@property NativeEventDriver eventDriver()
@safe @nogc nothrow {
static if (is(NativeEventDriver == EventDriver))
assert(s_driver !is null, "setupEventDriver() was not called for this thread.");
else {
if (!s_driver) {
s_driver = mallocT!NativeEventDriver;
}
}
return s_driver;
}
static if (!is(NativeEventDriver == EventDriver)) {
static this()
{
if (!s_isMainThread) {
if (!s_initCount++) {
assert(s_driver is null);
}
}
}
static ~this()
{
if (!s_isMainThread) {
if (!--s_initCount) {
if (s_driver) {
if (s_driver.dispose())
freeT(s_driver);
}
}
}
}
shared static this()
{
if (!s_initCount++) {
s_isMainThread = true;
}
}
shared static ~this()
{
if (!--s_initCount) {
if (s_driver) {
if (s_driver.dispose())
freeT(s_driver);
}
}
}
} else {
void setupEventDriver(EventDriver driver)
{
assert(driver !is null, "The event driver instance must be non-null.");
assert(!s_driver, "Can only set up the event driver once per thread.");
s_driver = driver;
}
}
private {
NativeEventDriver s_driver;
bool s_isMainThread;
// keeps track of nested DRuntime initializations that happen when
// (un)loading shared libaries.
int s_initCount = 0;
}