work around #32087 by polling for I/O on windows inside thread loops (#32109)

JeffBezanson · web-flow · commit 4247a48ec297 · 2019-05-23T14:37:58.000-04:00
diff --git a/src/partr.c b/src/partr.c
@@ -314,7 +314,11 @@ JL_DLLEXPORT jl_task_t *jl_task_get_next(jl_value_t *getsticky)
                 }
                 uv_loop_t *loop = jl_global_event_loop();
                 loop->stop_flag = 0;
+#ifdef _OS_WINDOWS_
+                uv_run(loop, UV_RUN_NOWAIT);
+#else
                 uv_run(loop, UV_RUN_ONCE);
+#endif
                 JL_UV_UNLOCK();
             }
             else {

Original file line number	Diff line number	Diff line change
`@@ -314,7 +314,11 @@ JL_DLLEXPORT jl_task_t jl_task_get_next(jl_value_t getsticky)`
`314`	`314`	`}`
`315`	`315`	`uv_loop_t *loop = jl_global_event_loop();`
`316`	`316`	`loop->stop_flag = 0;`
	`317`	`+#ifdef _OS_WINDOWS_`
	`318`	`+ uv_run(loop, UV_RUN_NOWAIT);`
	`319`	`+#else`
`317`	`320`	`uv_run(loop, UV_RUN_ONCE);`
	`321`	`+#endif`
`318`	`322`	`JL_UV_UNLOCK();`
`319`	`323`	`}`
`320`	`324`	`else {`