diff options
author | Joshua Haberman <joshua@reverberate.org> | 2011-04-01 15:40:06 -0700 |
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committer | Joshua Haberman <joshua@reverberate.org> | 2011-04-01 15:40:06 -0700 |
commit | 9eb4d695c49a85f7f72ad68c3c31affd61fef984 (patch) | |
tree | 79b7fde57e6f31a19405688a5f9e29e3f9cf7ab2 /src/upb_decoder.h | |
parent | 19517cc6f39871abf4a0705b49cfed9049ca6033 (diff) |
First rough version of the JIT.
It can successfully parse SpeedMessage1.
Preliminary results: 750MB/s on Core2 2.4GHz.
This number is 2.5x proto2.
This isn't apples-to-apples, because
proto2 is parsing to a struct and we are
just doing stream parsing, but for apps
that are currently using proto2, this is the
improvement they would see if they could
move to stream-based processing.
Unfortunately perf-regression-test.py is
broken, and I'm not 100% sure why. It would
be nice to fix it first (to ensure that
there are no performance regressions for
the table-based decoder) but I'm really
impatient to get the JIT checked in.
Diffstat (limited to 'src/upb_decoder.h')
-rw-r--r-- | src/upb_decoder.h | 19 |
1 files changed, 16 insertions, 3 deletions
diff --git a/src/upb_decoder.h b/src/upb_decoder.h index bb54930..1be31c4 100644 --- a/src/upb_decoder.h +++ b/src/upb_decoder.h @@ -27,13 +27,12 @@ extern "C" { /* upb_decoder *****************************************************************/ +struct dasm_State; + struct _upb_decoder { // Bytesrc from which we pull serialized data. upb_bytesrc *bytesrc; - // Dispatcher to which we push parsed data. - upb_dispatcher dispatcher; - // String to hold our input buffer; is only active if d->buf != NULL. upb_string *bufstr; @@ -48,6 +47,7 @@ struct _upb_decoder { // End of this buffer, relative to *ptr. const char *end; + const char *jit_end; // Members which may also be written by the JIT: @@ -57,8 +57,21 @@ struct _upb_decoder { // End of this submessage, relative to *ptr. const char *submsg_end; + // MIN(end, submsg_end) + const char *effective_end; + // Where we will store any errors that occur. upb_status *status; + + // Dispatcher to which we push parsed data. + upb_dispatcher dispatcher; + + // JIT-generated machine code (else NULL). + char *jit_code; + size_t jit_size; + char *debug_info; + + struct dasm_State *dynasm; }; // A upb_decoder decodes the binary protocol buffer format, writing the data it |