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Diffstat (limited to 'ChangeLog')
| -rw-r--r-- | ChangeLog | 38 |
1 files changed, 38 insertions, 0 deletions
@@ -1,5 +1,43 @@ 2015-05-22 Kaz Kylheku <kaz@kylheku.com> + Ligher weight debug instrumentation. + + This speeds up the TXR Lisp interpreter, because do_eval + sets up a debug frame and uses debug_return. + + * debug.c (debug_block_s): Symbol removed. + (debug_init): Remove initialization of debug_block_s. + + * debug.h (debug_block_s): Declaration removed. + (debug_enter): Do not establish a named block or a catch block; + no time-wasting unwind stack manipulation at all. + The debug_depth variable is managed by the extended setjmp + context now. Provide a return value variable, and a well-defined name to + branch to to exit from the debug block. + (debug_return): Do not use heavy-weight uw_block_return; + simply set the return variable and branch to debug_return_out + label. + + * signal.h (EJ_DBG_MEMB, EJ_DBG_SAVE, EJ_DBG_REST, + EJ_OPT_MEMB, EJ_OPT_SAVE, EJ_OPT_REST): New macros. + (extended_jmp_buf): Define optional global state + variables using EJ_OPT_MEMB. + (extended_setjmp): Save and restore optional + globals using EJ_OPT_SAVE and EJ_OPT_RESTORE. + Now debug_depth is saved and restored if + debugging support is compiled in. + + * match.c (open_data_source): Remove bogus debug_return + invocations which were uncovered here by changes to the macro. + + * eval.c (do_eval, expand_macro): debug_return must now be after + debug_end, because it won't dynamically clean up frames that it doesn't + know about. The set_dyn_env is no longer unreachable in expand_macro; + it is now necessary because debug_return isn't doing the longjmp + that previously restored dyn_env. + +2015-05-22 Kaz Kylheku <kaz@kylheku.com> + * place.tl (pushnew): New macro. * lisplib.c (set_place_dlt_entries): Add pushnew. |