Zebediah Figura : wineusb.sys: Start an event handler thread.

[Alexandre Julliard]

Module: wine
Branch: master
Commit: eb8cb9e0cfae1d43ebccc72ded6179b60012e188
URL:    https://source.winehq.org/git/wine.git/?a=commit;h=eb8cb9e0cfae1d43ebccc72de...

Author: Zebediah Figura 
Date:   Wed Apr 15 09:43:21 2020 -0500

wineusb.sys: Start an event handler thread.

Signed-off-by: Zebediah Figura 
Signed-off-by: Alexandre Julliard

---

dlls/wineusb.sys/wineusb.c | 26 ++++++++++++++++++++++++++
 1 file changed, 26 insertions(+)

diff --git a/dlls/wineusb.sys/wineusb.c b/dlls/wineusb.sys/wineusb.c
index 14795f4ec4..060fb3d0d2 100644
--- a/dlls/wineusb.sys/wineusb.c
+++ b/dlls/wineusb.sys/wineusb.c
@@ -40,6 +40,25 @@ WINE_DEFAULT_DEBUG_CHANNEL(wineusb);

static DEVICE_OBJECT *bus_fdo, *bus_pdo;

+static BOOL thread_shutdown;
+static HANDLE event_thread;
+
+static DWORD CALLBACK event_thread_proc(void *arg)
+{
+    int ret;
+
+    TRACE("Starting event thread.\n");
+
+    while (!thread_shutdown)
+    {
+        if ((ret = libusb_handle_events(NULL)))
+            ERR("Error handling events: %s\n", libusb_strerror(ret));
+    }
+
+    TRACE("Shutting down event thread.\n");
+    return 0;
+}
+
 static NTSTATUS fdo_pnp(IRP *irp)
 {
     IO_STACK_LOCATION *stack = IoGetCurrentIrpStackLocation(irp);
@@ -55,6 +74,11 @@ static NTSTATUS fdo_pnp(IRP *irp)
             break;

case IRP_MN_REMOVE_DEVICE:
+            thread_shutdown = TRUE;
+            libusb_interrupt_event_handler(NULL);
+            WaitForSingleObject(event_thread, INFINITE);
+            CloseHandle(event_thread);
+
             irp->IoStatus.Status = STATUS_SUCCESS;
             IoSkipCurrentIrpStackLocation(irp);
             ret = IoCallDriver(bus_pdo, irp);
@@ -111,6 +135,8 @@ NTSTATUS WINAPI DriverEntry(DRIVER_OBJECT *driver, UNICODE_STRING *path)
         return STATUS_UNSUCCESSFUL;
     }

+    event_thread = CreateThread(NULL, 0, event_thread_proc, NULL, 0, NULL);
+
     driver->DriverExtension->AddDevice = driver_add_device;
     driver->DriverUnload = driver_unload;
     driver->MajorFunction[IRP_MJ_PNP] = driver_pnp;