| i#6289: Add timestamps at buffer end and around syscalls (#6290) Adds a timestamp+cpuid pair at the end of normal buffers, to help separate trace output i/o time. Adds a timestamp+cpuid pair before and after each application syscall. It appears around the syscall marker. The trace buffer is no longer output pre-syscall (this addresses #3113) except for i-filtered traces or small-window traces where we need a frequent trace size check. Adds a timestamp+cpuid pair when a kernel transfer event occurs. The trace buffer is no longer output here. Fixes the existing behavior where the post-syscall-buffer's timestamp contains the pre-syscall time. Bumps the trace version for this change as the contents of post-syscall timestamps are now different. Augments the documentation around timestamps and adds a missing entry on syscall markers. Adds some invariant checks, and improve existing syscall marker checks. Further checks are more difficult as the post-syscall time is not present when there is no post-syscall event, such as with exit or sigreturn. Did some manual testing with the view tool. Applies several auxiliary changes required to get all modes to work with these additional timestamps: + Removes the timestamp+cpuid from the split-pipe header, as that timestamp is delayed by i/o and results in misleading out-of-order timestamps. + Prevents pipe-splitting before a cpuid, to avoid a confusing sequence. + Fixes a bug where a syscall marker is missing when the prior block wrote out its buffer (#6291). + Fixes #6245 by re-instating the footer for non-split window files and removing the template .* from PR #6165 which was hiding the warning (this one could possibly be split into its own PR). + Adjusts the PC discontinuity relaxation for online unfetched instrs (#4915) to check the size now that there's no timestamp. Issue: #4915 Fixes #6289 Fixes #3113 Fixes #6291 Fixes #6245 | 2 年前 |
| i#5520 memtrace encodings: Add new feature slides pdf (#5685) Adds a "News" line to the drmemtrace docs with a link to a new pdf of slides explaining the new embedded instruction encodings along with a preview of the forthcoming seek feature. Issue: #5520 | 3 年前 |