1 files changed, 127 insertions, 0 deletions
diff --git a/libparc/parc/algol/parc_EventSignal.c b/libparc/parc/algol/parc_EventSignal.c
new file mode 100755
index 00000000..7b8d1191
--- /dev/null
+++ b/libparc/parc/algol/parc_EventSignal.c
@@ -0,0 +1,127 @@
+/*
+ * Copyright (c) 2017 Cisco and/or its affiliates.
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at:
+ *
+ *     http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ */
+
+/**
+ */
+#include <config.h>
+
+#include <LongBow/runtime.h>
+
+#include "internal_parc_Event.h"
+#include <parc/algol/parc_EventScheduler.h>
+#include <parc/algol/parc_EventSignal.h>
+#include <parc/algol/parc_FileOutputStream.h>
+#include <parc/logging/parc_Log.h>
+#include <parc/logging/parc_LogReporterFile.h>
+
+static int _parc_event_signal_debug_enabled = 0;
+
+#define parcEventSignal_LogDebug(parcEventSignal, ...) \
+    if (_parc_event_signal_debug_enabled) \
+        parcLog_Debug(parcEventScheduler_GetLogger(parcEventSignal->eventScheduler), __VA_ARGS__)
+
+/**
+ * Current implementation based on top of libevent2
+ */
+#include <event2/event.h>
+#include <event2/util.h>
+
+struct PARCEventSignal {
+    /**
+     * The event instance.
+     */
+    struct event *event;
+
+    // Event scheduler we have been queued with
+    PARCEventScheduler *eventScheduler;
+
+    PARCEventSignal_Callback *callback;
+    void *callbackUserData;
+};
+
+static void
+_parc_event_signal_callback(evutil_socket_t fd, short flags, void *context)
+{
+    PARCEventSignal *parcEventSignal = (PARCEventSignal *) context;
+    parcEventSignal_LogDebug(parcEventSignal,
+                             "_parc_event_signal_callback(fd=%x,flags=%x,parcEventSignal=%p)\n",
+                             fd, flags, parcEventSignal);
+    parcEventSignal->callback((int) fd, internal_libevent_type_to_PARCEventType(flags),
+                              parcEventSignal->callbackUserData);
+}
+
+PARCEventSignal *
+parcEventSignal_Create(PARCEventScheduler *eventScheduler, int signal, PARCEventType flags, PARCEvent_Callback *callback, void *callbackArgs)
+{
+    PARCEventSignal *parcEventSignal = parcMemory_Allocate(sizeof(PARCEventSignal));
+    assertNotNull(parcEventSignal, "parcMemory_Allocate(%zu) returned NULL", sizeof(PARCEventSignal));
+
+    parcEventSignal->eventScheduler = eventScheduler;
+    parcEventSignal->callback = callback;
+    parcEventSignal->callbackUserData = callbackArgs;
+
+    parcEventSignal->event = event_new(parcEventScheduler_GetEvBase(eventScheduler), signal,
+                                       internal_PARCEventType_to_libevent_type(flags),
+                                       _parc_event_signal_callback, parcEventSignal);
+    assertNotNull(parcEventSignal->event, "Could not create a new event!");
+
+    parcEventSignal_LogDebug(parcEventSignal,
+                             "parcEventSignal_Create(base=%p,signal=%x,flags=%x,cb=%p,args=%p) = %p\n",
+                             parcEventScheduler_GetEvBase(eventScheduler), signal, flags,
+                             callback, callbackArgs, parcEventSignal);
+    return parcEventSignal;
+}
+
+int
+parcEventSignal_Start(PARCEventSignal *parcEventSignal)
+{
+    parcEventSignal_LogDebug(parcEventSignal, "parcEventSignal_Start(event=%p)\n", parcEventSignal);
+    assertNotNull(parcEventSignal, "parcEventStart_Signal must be passed a valid event!");
+
+    int result = event_add(parcEventSignal->event, NULL);
+    return result;
+}
+
+int
+parcEventSignal_Stop(PARCEventSignal *parcEventSignal)
+{
+    parcEventSignal_LogDebug(parcEventSignal, "parcEventSignal_Stop(event=%p)\n", parcEventSignal);
+    assertNotNull(parcEventSignal, "parcEvent_Stop must be passed a valid event!");
+
+    int result = event_del(parcEventSignal->event);
+    return result;
+}
+
+void
+parcEventSignal_Destroy(PARCEventSignal **parcEventSignal)
+{
+    parcEventSignal_LogDebug((*parcEventSignal), "parcEventSignal_Destroy(event=%p)\n", parcEventSignal);
+    assertNotNull(*parcEventSignal, "parcEvent_Destroy must be passed a valid parcEventSignal!");
+    assertNotNull((*parcEventSignal)->event, "parcEvent_Destroy passed a null event!");
+    event_free((*parcEventSignal)->event);
+    parcMemory_Deallocate((void **) parcEventSignal);
+}
+
+void
+parcEventSignal_EnableDebug(void)
+{
+    _parc_event_signal_debug_enabled = 1;
+}
+
+void
+parcEventSignal_DisableDebug(void)
+{
+    _parc_event_signal_debug_enabled = 0;
+}