Each trace table entry is a fixed-length record consisting of a
fixed-format portion (containing such items as the timestamp, thread
ID, and member ID) and a member-specific portion. The member-specific
portion has a fixed length, of which some (or all) can be unused.
For information about how participating products use the trace table
entry, see the product-specific documentation. The format of the trace
table entry is shown in Figure 1.
Figure 1. Format of the
trace table entry (AMODE 64)
- Time
- The 64-bit value obtained from a store clock (STCK).
- Thread ID
- The 8-byte thread ID of the thread that is adding the trace table entry.
- Member ID and Flags
- Contains 2 fields:
- Member ID
- The 1-byte member ID of the member making the trace table entry,
as follows:
- ID
- Name
- 01
- CEL
- 03
- C/C++
- 08
- Reserved
- 12
- Sockets
- Flags
- 24 flags reserved for internal use.
- Member Entry Type
- A number that indicates the type of the member-specific trace information that follows the field. To uniquely identify the information contained in a specific TTE, you must consider Member ID as well as Member Entry Type.
- Member-Specific Information
- Based on the member ID and the member entry type, this field contains the specific information for the entry, up to 104 bytes. For C/C++, the entry type of 1 is a record that records an invocation of a base C runtime library function. The entry consists of the name of the invoking function and the name of the invoked function. Entry type 2 is a record that records the return from the base library function. It contains the returned value and the value of errno.