Add a module to distribute messages to many analysis modules

[lttv.git] / lttv / lttv / sync / data_structures.c

diff --git a/lttv/lttv/sync/data_structures.c b/lttv/lttv/sync/data_structures.c
index 70eb22c74a84f6d56f957f2d81da5f4d4422072e..c4d4d966f31025db80058b69bfadb4762411f8ef 100644 (file)
--- a/lttv/lttv/sync/data_structures.c
+++ b/lttv/lttv/sync/data_structures.c
@@ -99,15 +99,12 @@ bool isAcking(const Message* const ackSegment, const Message* const
  * Convert an IP address from 32 bit form to dotted quad
  *
  * Args:
- *   str:          A preallocated string of length >= 17
+ *   str:          A preallocated string of length >= 16
  *   addr:         Address
  */
 void convertIP(char* const str, const uint32_t addr)
 {
-       struct in_addr iaddr;
-
-       iaddr.s_addr= htonl(addr);
-       strcpy(str, inet_ntoa(iaddr));
+       strcpy(str, inet_ntoa((struct in_addr) {.s_addr= addr}));
 }
 
 
@@ -116,7 +113,7 @@ void convertIP(char* const str, const uint32_t addr)
  */
 void printTCPSegment(const Message* const segment)
 {
-       char saddr[17], daddr[17];
+       char saddr[16], daddr[16];
        SegmentKey* segmentKey;
 
        g_assert(segment->inE->type == TCP);
@@ -329,6 +326,7 @@ void destroyTCPEvent(Event* const event)
        destroyEvent(event);
 }
 
+
 /*
  * Free the memory used by a base Event
  */
@@ -545,7 +543,7 @@ void gdnDestroyBroadcast(gpointer data)
 void destroyBroadcast(Broadcast* const broadcast)
 {
        g_queue_foreach(broadcast->events, &gfDestroyEvent, NULL);
-       g_queue_clear(broadcast->events);
+       g_queue_free(broadcast->events);
        free(broadcast);
 }
 
@@ -563,3 +561,82 @@ void gfDestroyEvent(gpointer data, gpointer user_data)
 
        event->destroy(event);
 }
+
+
+/* Subtract two WallTime structs
+ *
+ * Args:
+ *   tA, tB:       WallTime
+ *
+ * Returns:
+ *   The result of tA - tB, as a double. This may incur a loss of
+ *   precision.
+ */
+double wallTimeSub(const WallTime const* tA, const WallTime const* tB)
+{
+       return (double) tA->seconds - tB->seconds + ((double) tA->nanosec - tB->nanosec) / 1e9;
+}
+
+
+/*
+ * Allocate and copy a base event
+ *
+ * Args:
+ *   newEvent:     new event, pointer will be updated
+ *   event:        event to copy
+ */
+void copyEvent(const Event* const event, Event** const newEvent)
+{
+       g_assert(event->event.tcpEvent == NULL);
+
+       *newEvent= malloc(sizeof(Event));
+       memcpy(*newEvent, event, sizeof(Event));
+}
+
+
+/*
+ * Allocate and copy a TCP event
+ *
+ * Args:
+ *   newEvent:     new event, pointer will be updated
+ *   event:        event to copy
+ */
+void copyTCPEvent(const Event* const event, Event** const newEvent)
+{
+       g_assert(event->type == TCP);
+
+       *newEvent= malloc(sizeof(Event));
+       memcpy(*newEvent, event, sizeof(Event));
+
+       (*newEvent)->event.tcpEvent= malloc(sizeof(TCPEvent));
+       memcpy((*newEvent)->event.tcpEvent, event->event.tcpEvent,
+               sizeof(TCPEvent));
+
+       (*newEvent)->event.tcpEvent->segmentKey= malloc(sizeof(SegmentKey));
+       memcpy((*newEvent)->event.tcpEvent->segmentKey,
+               event->event.tcpEvent->segmentKey, sizeof(SegmentKey));
+}
+
+
+/*
+ * Allocate and copy a UDP event
+ *
+ * Args:
+ *   newEvent:     new event, pointer will be updated
+ *   event:        event to copy
+ */
+void copyUDPEvent(const Event* const event, Event** const newEvent)
+{
+       g_assert(event->type == UDP);
+
+       *newEvent= malloc(sizeof(Event));
+       memcpy(*newEvent, event, sizeof(Event));
+
+       (*newEvent)->event.udpEvent= malloc(sizeof(UDPEvent));
+       memcpy((*newEvent)->event.udpEvent, event->event.udpEvent,
+               sizeof(UDPEvent));
+
+       (*newEvent)->event.udpEvent->datagramKey= malloc(sizeof(DatagramKey));
+       memcpy((*newEvent)->event.udpEvent->datagramKey,
+               event->event.udpEvent->datagramKey, sizeof(DatagramKey));
+}