*
* Babeltrace Trace Converter Library
*
- * Copyright 2010 - Mathieu Desnoyers <mathieu.desnoyers@efficios.com>
+ * Copyright 2010-2011 EfficiOS Inc. and Linux Foundation
+ *
+ * Author: Mathieu Desnoyers <mathieu.desnoyers@efficios.com>
*
* Permission is hereby granted, free of charge, to any person obtaining a copy
* of this software and associated documentation files (the "Software"), to deal
#include <babeltrace/ctf/types.h>
#include <babeltrace/ctf/metadata.h>
#include <babeltrace/ctf-text/types.h>
+#include <babeltrace/prio_heap.h>
-static
-int convert_stream(struct ctf_text_stream_pos *sout,
- struct ctf_file_stream *sin)
+static int read_event(struct ctf_file_stream *sin)
{
int ret;
- /* For each event, print header, context, payload */
- /* TODO: order events by timestamps across streams */
- for (;;) {
- ret = sin->pos.parent.event_cb(&sin->pos.parent, sin->stream);
- if (ret == EOF)
- break;
- else if (ret) {
- fprintf(stdout, "[error] Reading event failed.\n");
- goto error;
- }
- ret = sout->parent.event_cb(&sout->parent, sin->stream);
- if (ret) {
- fprintf(stdout, "[error] Writing event failed.\n");
- goto error;
- }
+ ret = sin->pos.parent.event_cb(&sin->pos.parent, &sin->parent);
+ if (ret == EOF)
+ return EOF;
+ else if (ret) {
+ fprintf(stdout, "[error] Reading event failed.\n");
+ return ret;
}
-
return 0;
+}
-error:
- return ret;
+/*
+ * returns true if a < b, false otherwise.
+ */
+int stream_compare(void *a, void *b)
+{
+ struct ctf_file_stream *s_a = a, *s_b = b;
+
+ if (s_a->parent.timestamp < s_b->parent.timestamp)
+ return 1;
+ else
+ return 0;
}
int convert_trace(struct trace_descriptor *td_write,
- struct trace_descriptor *td_read)
+ struct trace_collection *trace_collection_read)
{
- struct ctf_trace *tin = container_of(td_read, struct ctf_trace, parent);
- struct ctf_text_stream_pos *sout =
- container_of(td_write, struct ctf_text_stream_pos, trace_descriptor);
- int stream_id, filenr;
- int ret;
+ struct ptr_heap *stream_heap;
+ struct ctf_text_stream_pos *sout;
+ int i, stream_id;
+ int ret = 0;
- /* For each stream (TODO: order events by timestamp) */
- for (stream_id = 0; stream_id < tin->streams->len; stream_id++) {
- struct ctf_stream_class *stream = g_ptr_array_index(tin->streams, stream_id);
+ stream_heap = g_new(struct ptr_heap, 1);
+ heap_init(stream_heap, 0, stream_compare);
+ sout = container_of(td_write, struct ctf_text_stream_pos,
+ trace_descriptor);
- if (!stream)
- continue;
- for (filenr = 0; filenr < stream->files->len; filenr++) {
- struct ctf_file_stream *file_stream = g_ptr_array_index(stream->files, filenr);
- ret = convert_stream(sout, file_stream);
- if (ret) {
- fprintf(stdout, "[error] Printing stream %d failed.\n", stream_id);
- goto error;
+ for (i = 0; i < trace_collection_read->array->len; i++) {
+ struct ctf_trace *tin;
+ struct trace_descriptor *td_read;
+
+ td_read = g_ptr_array_index(trace_collection_read->array, i);
+ tin = container_of(td_read, struct ctf_trace, parent);
+
+ /* Populate heap with each stream */
+ for (stream_id = 0; stream_id < tin->streams->len;
+ stream_id++) {
+ struct ctf_stream_class *stream;
+ int filenr;
+
+ stream = g_ptr_array_index(tin->streams, stream_id);
+ if (!stream)
+ continue;
+ for (filenr = 0; filenr < stream->streams->len;
+ filenr++) {
+ struct ctf_file_stream *file_stream;
+
+ file_stream = g_ptr_array_index(stream->streams,
+ filenr);
+
+ ret = read_event(file_stream);
+ if (ret == EOF) {
+ ret = 0;
+ continue;
+ } else if (ret) {
+ goto end;
+ }
+ /* Add to heap */
+ ret = heap_insert(stream_heap, file_stream);
+ if (ret) {
+ fprintf(stdout,
+ "[error] Out of memory.\n");
+ goto end;
+ }
}
}
}
- return 0;
+ /* Replace heap entries until EOF for each stream (heap empty) */
+ for (;;) {
+ struct ctf_file_stream *file_stream, *removed;
+
+ file_stream = heap_maximum(stream_heap);
+ if (!file_stream) {
+ /* end of file for all streams */
+ ret = 0;
+ break;
+ }
+ ret = sout->parent.event_cb(&sout->parent, &file_stream->parent);
+ if (ret) {
+ fprintf(stdout, "[error] Writing event failed.\n");
+ goto end;
+ }
+ ret = read_event(file_stream);
+ if (ret == EOF) {
+ removed = heap_remove(stream_heap);
+ assert(removed == file_stream);
+ ret = 0;
+ continue;
+ } else if (ret)
+ goto end;
+ /* Reinsert the file stream into the heap, and rebalance. */
+ removed = heap_replace_max(stream_heap, file_stream);
+ assert(removed == file_stream);
+ }
-error:
+end:
+ heap_free(stream_heap);
+ g_free(stream_heap);
return ret;
}
projects / babeltrace.git / blobdiff