diff options
Diffstat (limited to 'upb/pb/compile_decoder.c')
| -rw-r--r-- | upb/pb/compile_decoder.c | 217 |
1 files changed, 75 insertions, 142 deletions
diff --git a/upb/pb/compile_decoder.c b/upb/pb/compile_decoder.c index cec7b2a..89f000a 100644 --- a/upb/pb/compile_decoder.c +++ b/upb/pb/compile_decoder.c @@ -4,11 +4,6 @@ ** Code to compile a upb::Handlers into bytecode for decoding a protobuf ** according to that specific schema and destination handlers. ** -** Compiling to bytecode is always the first step. If we are using the -** interpreted decoder we leave it as bytecode and interpret that. If we are -** using a JIT decoder we use a code generator to turn the bytecode into native -** code, LLVM IR, etc. -** ** Bytecode definition is in decoder.int.h. */ @@ -23,80 +18,22 @@ #define MAXLABEL 5 #define EMPTYLABEL -1 -/* mgroup *********************************************************************/ - -static void freegroup(upb_refcounted *r) { - mgroup *g = (mgroup*)r; - upb_inttable_uninit(&g->methods); -#ifdef UPB_USE_JIT_X64 - upb_pbdecoder_freejit(g); -#endif - upb_gfree(g->bytecode); - upb_gfree(g); -} - -static void visitgroup(const upb_refcounted *r, upb_refcounted_visit *visit, - void *closure) { - const mgroup *g = (const mgroup*)r; - upb_inttable_iter i; - upb_inttable_begin(&i, &g->methods); - for(; !upb_inttable_done(&i); upb_inttable_next(&i)) { - upb_pbdecodermethod *method = upb_value_getptr(upb_inttable_iter_value(&i)); - visit(r, upb_pbdecodermethod_upcast(method), closure); - } -} - -mgroup *newgroup(const void *owner) { - mgroup *g = upb_gmalloc(sizeof(*g)); - static const struct upb_refcounted_vtbl vtbl = {visitgroup, freegroup}; - upb_refcounted_init(mgroup_upcast_mutable(g), &vtbl, owner); - upb_inttable_init(&g->methods, UPB_CTYPE_PTR); - g->bytecode = NULL; - g->bytecode_end = NULL; - return g; -} - - /* upb_pbdecodermethod ********************************************************/ -static void freemethod(upb_refcounted *r) { - upb_pbdecodermethod *method = (upb_pbdecodermethod*)r; - - if (method->dest_handlers_) { - upb_handlers_unref(method->dest_handlers_, method); - } - +static void freemethod(upb_pbdecodermethod *method) { upb_inttable_uninit(&method->dispatch); upb_gfree(method); } -static void visitmethod(const upb_refcounted *r, upb_refcounted_visit *visit, - void *closure) { - const upb_pbdecodermethod *m = (const upb_pbdecodermethod*)r; - visit(r, m->group, closure); -} - static upb_pbdecodermethod *newmethod(const upb_handlers *dest_handlers, mgroup *group) { - static const struct upb_refcounted_vtbl vtbl = {visitmethod, freemethod}; upb_pbdecodermethod *ret = upb_gmalloc(sizeof(*ret)); - upb_refcounted_init(upb_pbdecodermethod_upcast_mutable(ret), &vtbl, &ret); upb_byteshandler_init(&ret->input_handler_); - /* The method references the group and vice-versa, in a circular reference. */ - upb_ref2(ret, group); - upb_ref2(group, ret); - upb_inttable_insertptr(&group->methods, dest_handlers, upb_value_ptr(ret)); - upb_pbdecodermethod_unref(ret, &ret); - - ret->group = mgroup_upcast_mutable(group); + ret->group = group; ret->dest_handlers_ = dest_handlers; - ret->is_native_ = false; /* If we JIT, it will update this later. */ upb_inttable_init(&ret->dispatch, UPB_CTYPE_UINT64); - if (ret->dest_handlers_) { - upb_handlers_ref(ret->dest_handlers_, ret); - } return ret; } @@ -114,16 +51,28 @@ bool upb_pbdecodermethod_isnative(const upb_pbdecodermethod *m) { return m->is_native_; } -const upb_pbdecodermethod *upb_pbdecodermethod_new( - const upb_pbdecodermethodopts *opts, const void *owner) { - const upb_pbdecodermethod *ret; - upb_pbcodecache cache; - upb_pbcodecache_init(&cache); - ret = upb_pbcodecache_getdecodermethod(&cache, opts); - upb_pbdecodermethod_ref(ret, owner); - upb_pbcodecache_uninit(&cache); - return ret; +/* mgroup *********************************************************************/ + +static void freegroup(mgroup *g) { + upb_inttable_iter i; + + upb_inttable_begin(&i, &g->methods); + for(; !upb_inttable_done(&i); upb_inttable_next(&i)) { + freemethod(upb_value_getptr(upb_inttable_iter_value(&i))); + } + + upb_inttable_uninit(&g->methods); + upb_gfree(g->bytecode); + upb_gfree(g); +} + +mgroup *newgroup() { + mgroup *g = upb_gmalloc(sizeof(*g)); + upb_inttable_init(&g->methods, UPB_CTYPE_PTR); + g->bytecode = NULL; + g->bytecode_end = NULL; + return g; } @@ -355,7 +304,7 @@ static void putop(compiler *c, int op, ...) { va_end(ap); } -#if defined(UPB_USE_JIT_X64) || defined(UPB_DUMP_BYTECODE) +#if defined(UPB_DUMP_BYTECODE) const char *upb_pbdecoder_getopname(unsigned int op) { #define QUOTE(x) #x @@ -558,7 +507,7 @@ static upb_pbdecodermethod *find_submethod(const compiler *c, static void putsel(compiler *c, opcode op, upb_selector_t sel, const upb_handlers *h) { - if (upb_handlers_gethandler(h, sel)) { + if (upb_handlers_gethandler(h, sel, NULL)) { putop(c, op, sel); } } @@ -574,9 +523,9 @@ static bool haslazyhandlers(const upb_handlers *h, const upb_fielddef *f) { if (!upb_fielddef_lazy(f)) return false; - return upb_handlers_gethandler(h, getsel(f, UPB_HANDLER_STARTSTR)) || - upb_handlers_gethandler(h, getsel(f, UPB_HANDLER_STRING)) || - upb_handlers_gethandler(h, getsel(f, UPB_HANDLER_ENDSTR)); + return upb_handlers_gethandler(h, getsel(f, UPB_HANDLER_STARTSTR), NULL) || + upb_handlers_gethandler(h, getsel(f, UPB_HANDLER_STRING), NULL) || + upb_handlers_gethandler(h, getsel(f, UPB_HANDLER_ENDSTR), NULL); } @@ -814,10 +763,13 @@ static void find_methods(compiler *c, const upb_handlers *h) { upb_value v; upb_msg_field_iter i; const upb_msgdef *md; + upb_pbdecodermethod *method; if (upb_inttable_lookupptr(&c->group->methods, h, &v)) return; - newmethod(h, c->group); + + method = newmethod(h, c->group); + upb_inttable_insertptr(&c->group->methods, h, upb_value_ptr(method)); /* Find submethods. */ md = upb_handlers_msgdef(h); @@ -866,42 +818,15 @@ static void set_bytecode_handlers(mgroup *g) { } -/* JIT setup. *****************************************************************/ - -#ifdef UPB_USE_JIT_X64 - -static void sethandlers(mgroup *g, bool allowjit) { - g->jit_code = NULL; - if (allowjit) { - /* Compile byte-code into machine code, create handlers. */ - upb_pbdecoder_jit(g); - } else { - set_bytecode_handlers(g); - } -} - -#else /* UPB_USE_JIT_X64 */ - -static void sethandlers(mgroup *g, bool allowjit) { - /* No JIT compiled in; use bytecode handlers unconditionally. */ - UPB_UNUSED(allowjit); - set_bytecode_handlers(g); -} - -#endif /* UPB_USE_JIT_X64 */ - - /* TODO(haberman): allow this to be constructed for an arbitrary set of dest * handlers and other mgroups (but verify we have a transitive closure). */ -const mgroup *mgroup_new(const upb_handlers *dest, bool allowjit, bool lazy, - const void *owner) { +const mgroup *mgroup_new(const upb_handlers *dest, bool allowjit, bool lazy) { mgroup *g; compiler *c; UPB_UNUSED(allowjit); - UPB_ASSERT(upb_handlers_isfrozen(dest)); - g = newgroup(owner); + g = newgroup(); c = newcompiler(g, lazy); find_methods(c, dest); @@ -932,63 +857,71 @@ const mgroup *mgroup_new(const upb_handlers *dest, bool allowjit, bool lazy, } #endif - sethandlers(g, allowjit); + set_bytecode_handlers(g); return g; } /* upb_pbcodecache ************************************************************/ -void upb_pbcodecache_init(upb_pbcodecache *c) { - upb_inttable_init(&c->groups, UPB_CTYPE_CONSTPTR); - c->allow_jit_ = true; +upb_pbcodecache *upb_pbcodecache_new(upb_handlercache *dest) { + upb_pbcodecache *c = upb_gmalloc(sizeof(*c)); + + if (!c) return NULL; + + c->dest = dest; + c->allow_jit = true; + c->lazy = false; + + c->arena = upb_arena_new(); + if (!upb_inttable_init(&c->groups, UPB_CTYPE_CONSTPTR)) return NULL; + + return c; } -void upb_pbcodecache_uninit(upb_pbcodecache *c) { - upb_inttable_iter i; - upb_inttable_begin(&i, &c->groups); - for(; !upb_inttable_done(&i); upb_inttable_next(&i)) { - const mgroup *group = upb_value_getconstptr(upb_inttable_iter_value(&i)); - mgroup_unref(group, c); +void upb_pbcodecache_free(upb_pbcodecache *c) { + size_t i; + + for (i = 0; i < upb_inttable_count(&c->groups); i++) { + upb_value v; + bool ok = upb_inttable_lookup(&c->groups, i, &v); + UPB_ASSERT(ok); + freegroup((void*)upb_value_getconstptr(v)); } + upb_inttable_uninit(&c->groups); + upb_arena_free(c->arena); + upb_gfree(c); } bool upb_pbcodecache_allowjit(const upb_pbcodecache *c) { - return c->allow_jit_; + return c->allow_jit; } -bool upb_pbcodecache_setallowjit(upb_pbcodecache *c, bool allow) { - if (upb_inttable_count(&c->groups) > 0) - return false; - c->allow_jit_ = allow; - return true; +void upb_pbcodecache_setallowjit(upb_pbcodecache *c, bool allow) { + UPB_ASSERT(upb_inttable_count(&c->groups) == 0); + c->allow_jit = allow; +} + +void upb_pbdecodermethodopts_setlazy(upb_pbcodecache *c, bool lazy) { + UPB_ASSERT(upb_inttable_count(&c->groups) == 0); + c->lazy = lazy; } -const upb_pbdecodermethod *upb_pbcodecache_getdecodermethod( - upb_pbcodecache *c, const upb_pbdecodermethodopts *opts) { +const upb_pbdecodermethod *upb_pbcodecache_get(upb_pbcodecache *c, + const upb_msgdef *md) { upb_value v; bool ok; + const upb_handlers *h; + const mgroup *g; /* Right now we build a new DecoderMethod every time. * TODO(haberman): properly cache methods by their true key. */ - const mgroup *g = mgroup_new(opts->handlers, c->allow_jit_, opts->lazy, c); + h = upb_handlercache_get(c->dest, md); + g = mgroup_new(h, c->allow_jit, c->lazy); upb_inttable_push(&c->groups, upb_value_constptr(g)); - ok = upb_inttable_lookupptr(&g->methods, opts->handlers, &v); + ok = upb_inttable_lookupptr(&g->methods, h, &v); UPB_ASSERT(ok); return upb_value_getptr(v); } - - -/* upb_pbdecodermethodopts ****************************************************/ - -void upb_pbdecodermethodopts_init(upb_pbdecodermethodopts *opts, - const upb_handlers *h) { - opts->handlers = h; - opts->lazy = false; -} - -void upb_pbdecodermethodopts_setlazy(upb_pbdecodermethodopts *opts, bool lazy) { - opts->lazy = lazy; -} |