Use priority heap to order by timestamp

[babeltrace.git] / include / babeltrace / ctf / metadata.h

diff --git a/include/babeltrace/ctf/metadata.h b/include/babeltrace/ctf/metadata.h
index 903d018dd9cb7c6811fcb9ce42712a29864c88f3..453c9f7085276de0b4ba5eb6798b475f5d6d7363 100644 (file)
--- a/include/babeltrace/ctf/metadata.h
+++ b/include/babeltrace/ctf/metadata.h
@@ -29,6 +29,7 @@
 #include <glib.h>
 
 #define CTF_MAGIC      0xC1FC1FC1
+#define TSDL_MAGIC     0x75D11D57
 
 struct ctf_trace;
 struct ctf_stream_class;
@@ -95,6 +96,9 @@ struct ctf_trace {
        DIR *dir;
        int dirfd;
        int flags;              /* open flags */
+
+       /* Heap of streams, ordered to always get the lowest timestam */
+       struct ptr_heap *stream_heap;
 };
 
 #define CTF_STREAM_SET_FIELD(ctf_stream, field)                                \
@@ -178,4 +182,19 @@ struct ctf_event {
        } field_mask;
 };
 
+#define HEADER_END             char end_field
+#define header_sizeof(type)    offsetof(typeof(type), end_field)
+
+struct metadata_packet_header {
+       uint32_t magic;                 /* 0x75D11D57 */
+       uint8_t  uuid[16];              /* Unique Universal Identifier */
+       uint32_t checksum;              /* 0 if unused */
+       uint32_t content_size;          /* in bits */
+       uint32_t packet_size;           /* in bits */
+       uint8_t  compression_scheme;    /* 0 if unused */
+       uint8_t  encryption_scheme;     /* 0 if unused */
+       uint8_t  checksum_scheme;       /* 0 if unused */
+       HEADER_END;
+};
+
 #endif /* _BABELTRACE_CTF_METADATA_H */