MethodLivenessResult MethodLiveness::BasicBlock::get_liveness_at(ciMethod* method, int bci) { MethodLivenessResult answer(NEW_RESOURCE_ARRAY(uintptr_t, _analyzer->bit_map_size_words()), _analyzer->bit_map_size_bits()); answer.set_is_valid(); #ifndef ASSERT if (bci == start_bci()) { answer.set_from(_entry); return answer; } #endif #ifdef ASSERT ResourceMark rm; BitMap g(_gen.size()); g.set_from(_gen); BitMap k(_kill.size()); k.set_from(_kill); #endif if (_last_bci != bci || trueInDebug) { ciBytecodeStream bytes(method); bytes.reset_to_bci(bci); bytes.set_max_bci(limit_bci()); compute_gen_kill_range(&bytes); assert(_last_bci != bci || (g.is_same(_gen) && k.is_same(_kill)), "cached computation is incorrect"); _last_bci = bci; } answer.clear(); answer.set_union(_normal_exit); answer.set_difference(_kill); answer.set_union(_gen); answer.set_union(_exception_exit); #ifdef ASSERT if (bci == start_bci()) { assert(answer.is_same(_entry), "optimized answer must be accurate"); } #endif return answer; }
OopMap::OopMap(OopMap::DeepCopyToken, OopMap* source) { // This constructor does a deep copy // of the source OopMap. set_write_stream(new CompressedWriteStream(source->omv_count() * 2)); set_omv_data(NULL); set_omv_count(0); set_offset(source->offset()); #ifdef ASSERT _locs_length = source->_locs_length; _locs_used = NEW_RESOURCE_ARRAY(OopMapValue::oop_types, _locs_length); for(int i = 0; i < _locs_length; i++) _locs_used[i] = OopMapValue::unused_value; #endif // We need to copy the entries too. for (OopMapStream oms(source); !oms.is_done(); oms.next()) { OopMapValue omv = oms.current(); omv.write_on(write_stream()); increment_count(); } }
void CodeSection::expand_locs(int new_capacity) { if (_locs_start == NULL) { initialize_locs(new_capacity); return; } else { int old_count = locs_count(); int old_capacity = locs_capacity(); if (new_capacity < old_capacity * 2) new_capacity = old_capacity * 2; relocInfo* locs_start; if (_locs_own) { locs_start = REALLOC_RESOURCE_ARRAY(relocInfo, _locs_start, old_capacity, new_capacity); } else { locs_start = NEW_RESOURCE_ARRAY(relocInfo, new_capacity); Copy::conjoint_jbytes(_locs_start, locs_start, old_capacity * sizeof(relocInfo)); _locs_own = true; } _locs_start = locs_start; _locs_end = locs_start + old_count; _locs_limit = locs_start + new_capacity; } }
void OopNCode::gc_mark_contents() { ResourceMark m; addrDesc* p = locs(), *end = locsEnd(); LocChange* changes = NEW_RESOURCE_ARRAY( LocChange, end - p); int32 locLen = 0; for (; p < end; p++) { if (!p->isOop()) { // no oops here } else { oop oldOop = (oop)p->referent(this); oop newOop = oldOop; MARK_TEMPLATE(&newOop); if (newOop != oldOop) { changes[locLen].p = p; changes[locLen].newOop = newOop; locLen++; } } } for (LocChange* l = &changes[0]; locLen > 0; locLen--, l++) { l->p->set_referent(this, (char*)l->newOop); } }
void BytecodePrinter::print_attributes(int bci, outputStream* st) { // Show attributes of pre-rewritten codes Bytecodes::Code code = Bytecodes::java_code(raw_code()); // If the code doesn't have any fields there's nothing to print. // note this is ==1 because the tableswitch and lookupswitch are // zero size (for some reason) and we want to print stuff out for them. if (Bytecodes::length_for(code) == 1) { st->cr(); return; } switch(code) { // Java specific bytecodes only matter. case Bytecodes::_bipush: st->print_cr(" " INT32_FORMAT, get_byte()); break; case Bytecodes::_sipush: st->print_cr(" " INT32_FORMAT, get_short()); break; case Bytecodes::_ldc: if (Bytecodes::uses_cp_cache(raw_code())) { print_constant(get_index_u1_cpcache(), st); } else { print_constant(get_index_u1(), st); } break; case Bytecodes::_ldc_w: case Bytecodes::_ldc2_w: if (Bytecodes::uses_cp_cache(raw_code())) { print_constant(get_index_u2_cpcache(), st); } else { print_constant(get_index_u2(), st); } break; case Bytecodes::_iload: case Bytecodes::_lload: case Bytecodes::_fload: case Bytecodes::_dload: case Bytecodes::_aload: case Bytecodes::_istore: case Bytecodes::_lstore: case Bytecodes::_fstore: case Bytecodes::_dstore: case Bytecodes::_astore: st->print_cr(" #%d", get_index_special()); break; case Bytecodes::_iinc: { int index = get_index_special(); jint offset = is_wide() ? get_short(): get_byte(); st->print_cr(" #%d " INT32_FORMAT, index, offset); } break; case Bytecodes::_newarray: { BasicType atype = (BasicType)get_index_u1(); const char* str = type2name(atype); if (str == NULL || atype == T_OBJECT || atype == T_ARRAY) { assert(false, "Unidentified basic type"); } st->print_cr(" %s", str); } break; case Bytecodes::_anewarray: { int klass_index = get_index_u2(); ConstantPool* constants = method()->constants(); Symbol* name = constants->klass_name_at(klass_index); st->print_cr(" %s ", name->as_C_string()); } break; case Bytecodes::_multianewarray: { int klass_index = get_index_u2(); int nof_dims = get_index_u1(); ConstantPool* constants = method()->constants(); Symbol* name = constants->klass_name_at(klass_index); st->print_cr(" %s %d", name->as_C_string(), nof_dims); } break; case Bytecodes::_ifeq: case Bytecodes::_ifnull: case Bytecodes::_iflt: case Bytecodes::_ifle: case Bytecodes::_ifne: case Bytecodes::_ifnonnull: case Bytecodes::_ifgt: case Bytecodes::_ifge: case Bytecodes::_if_icmpeq: case Bytecodes::_if_icmpne: case Bytecodes::_if_icmplt: case Bytecodes::_if_icmpgt: case Bytecodes::_if_icmple: case Bytecodes::_if_icmpge: case Bytecodes::_if_acmpeq: case Bytecodes::_if_acmpne: case Bytecodes::_goto: case Bytecodes::_jsr: st->print_cr(" %d", bci + get_short()); break; case Bytecodes::_goto_w: case Bytecodes::_jsr_w: st->print_cr(" %d", bci + get_int()); break; case Bytecodes::_ret: st->print_cr(" %d", get_index_special()); break; case Bytecodes::_tableswitch: { align(); int default_dest = bci + get_int(); int lo = get_int(); int hi = get_int(); int len = hi - lo + 1; jint* dest = NEW_RESOURCE_ARRAY(jint, len); for (int i = 0; i < len; i++) { dest[i] = bci + get_int(); } st->print(" %d " INT32_FORMAT " " INT32_FORMAT " ", default_dest, lo, hi); int first = true; for (int ll = lo; ll <= hi; ll++, first = false) { int idx = ll - lo; const char *format = first ? " %d:" INT32_FORMAT " (delta: %d)" : ", %d:" INT32_FORMAT " (delta: %d)"; st->print(format, ll, dest[idx], dest[idx]-bci); } st->cr(); } break; case Bytecodes::_lookupswitch: { align(); int default_dest = bci + get_int(); int len = get_int(); jint* key = NEW_RESOURCE_ARRAY(jint, len); jint* dest = NEW_RESOURCE_ARRAY(jint, len); for (int i = 0; i < len; i++) { key [i] = get_int(); dest[i] = bci + get_int(); }; st->print(" %d %d ", default_dest, len); bool first = true; for (int ll = 0; ll < len; ll++, first = false) { const char *format = first ? " " INT32_FORMAT ":" INT32_FORMAT : ", " INT32_FORMAT ":" INT32_FORMAT ; st->print(format, key[ll], dest[ll]); } st->cr(); } break; case Bytecodes::_putstatic: case Bytecodes::_getstatic: case Bytecodes::_putfield: case Bytecodes::_getfield: print_field_or_method(get_index_u2_cpcache(), st); break; case Bytecodes::_invokevirtual: case Bytecodes::_invokespecial: case Bytecodes::_invokestatic: print_field_or_method(get_index_u2_cpcache(), st); break; case Bytecodes::_invokeinterface: { int i = get_index_u2_cpcache(); int n = get_index_u1(); get_byte(); // ignore zero byte print_field_or_method(i, st); } break; case Bytecodes::_invokedynamic: print_field_or_method(get_index_u4(), st); break; case Bytecodes::_new: case Bytecodes::_checkcast: case Bytecodes::_instanceof: { int i = get_index_u2(); ConstantPool* constants = method()->constants(); Symbol* name = constants->klass_name_at(i); st->print_cr(" %d <%s>", i, name->as_C_string()); } break; case Bytecodes::_wide: // length is zero not one, but printed with no more info. break; default: ShouldNotReachHere(); break; } }
//------------------------------Dominator-------------------------------------- // Compute the dominator tree of the CFG. The CFG must already have been // constructed. This is the Lengauer & Tarjan O(E-alpha(E,V)) algorithm. void PhaseCFG::Dominators( ) { // Pre-grow the blocks array, prior to the ResourceMark kicking in _blocks.map(_num_blocks,0); ResourceMark rm; // Setup mappings from my Graph to Tarjan's stuff and back // Note: Tarjan uses 1-based arrays Tarjan *tarjan = NEW_RESOURCE_ARRAY(Tarjan,_num_blocks+1); // Tarjan's algorithm, almost verbatim: // Step 1: _rpo_ctr = _num_blocks; uint dfsnum = DFS( tarjan ); if( dfsnum-1 != _num_blocks ) {// Check for unreachable loops! // If the returned dfsnum does not match the number of blocks, then we // must have some unreachable loops. These can be made at any time by // IterGVN. They are cleaned up by CCP or the loop opts, but the last // IterGVN can always make more that are not cleaned up. Highly unlikely // except in ZKM.jar, where endless irreducible loops cause the loop opts // to not get run. // // Having found unreachable loops, we have made a bad RPO _block layout. // We can re-run the above DFS pass with the correct number of blocks, // and hack the Tarjan algorithm below to be robust in the presence of // such dead loops (as was done for the NTarjan code farther below). // Since this situation is so unlikely, instead I've decided to bail out. // CNC 7/24/2001 C->record_method_not_compilable("unreachable loop"); return; } _blocks._cnt = _num_blocks; // Tarjan is using 1-based arrays, so these are some initialize flags tarjan[0]._size = tarjan[0]._semi = 0; tarjan[0]._label = &tarjan[0]; uint i; for( i=_num_blocks; i>=2; i-- ) { // For all vertices in DFS order Tarjan *w = &tarjan[i]; // Get vertex from DFS // Step 2: Node *whead = w->_block->head(); for( uint j=1; j < whead->req(); j++ ) { Block *b = _bbs[whead->in(j)->_idx]; Tarjan *vx = &tarjan[b->_pre_order]; Tarjan *u = vx->EVAL(); if( u->_semi < w->_semi ) w->_semi = u->_semi; } // w is added to a bucket here, and only here. // Thus w is in at most one bucket and the sum of all bucket sizes is O(n). // Thus bucket can be a linked list. // Thus we do not need a small integer name for each Block. w->_bucket = tarjan[w->_semi]._bucket; tarjan[w->_semi]._bucket = w; w->_parent->LINK( w, &tarjan[0] ); // Step 3: for( Tarjan *vx = w->_parent->_bucket; vx; vx = vx->_bucket ) { Tarjan *u = vx->EVAL(); vx->_dom = (u->_semi < vx->_semi) ? u : w->_parent; } } // Step 4: for( i=2; i <= _num_blocks; i++ ) { Tarjan *w = &tarjan[i]; if( w->_dom != &tarjan[w->_semi] ) w->_dom = w->_dom->_dom; w->_dom_next = w->_dom_child = NULL; // Initialize for building tree later } // No immediate dominator for the root Tarjan *w = &tarjan[_broot->_pre_order]; w->_dom = NULL; w->_dom_next = w->_dom_child = NULL; // Initialize for building tree later // Convert the dominator tree array into my kind of graph for( i=1; i<=_num_blocks;i++){// For all Tarjan vertices Tarjan *t = &tarjan[i]; // Handy access Tarjan *tdom = t->_dom; // Handy access to immediate dominator if( tdom ) { // Root has no immediate dominator t->_block->_idom = tdom->_block; // Set immediate dominator t->_dom_next = tdom->_dom_child; // Make me a sibling of parent's child tdom->_dom_child = t; // Make me a child of my parent } else t->_block->_idom = NULL; // Root } w->setdepth( _num_blocks+1 ); // Set depth in dominator tree }
Block_Stack(Tarjan *tarjan, int size) : _tarjan(tarjan) { _stack = NEW_RESOURCE_ARRAY(Block_Descr, size); _stack_max = _stack + size; _stack_top = _stack - 1; // stack is empty }
// --- oops_arguments_do_impl ------------------------------------------------ void CodeBlob::oops_arguments_do_impl(frame fr, OopClosure* f) const { ResourceMark rm; // We are in some trampoline (resolve_and_patch_call) doing a GC. The // pending call has arguments that need GC'ing, but we do not yet know the // target method and cannot resolve the target method yet. frame cc = fr.sender(); // Compiled caller expected symbolOop meth_sig; bool is_static; if( cc.is_entry_frame() ) { // There's a rare race condition where the caller is an entry frame, but // the target got patched not-entrant before the call could be made. methodOop moop = cc.entry_frame_call_wrapper()->callee_method(); meth_sig = moop->signature(); is_static = moop->is_static(); } else { Bytecode_invoke*call; if(cc.is_interpreted_frame()){ // There's a rare race condition where we might need to GC in // resolve_and_patch_call but the caller is an interpreted frame. call = Bytecode_invoke_at(cc.interpreter_frame_method(), cc.interpreter_frame_bci()); } else { // Normal case: find caller's callsite CodeBlob*cb=CodeCache::find_blob(cc.pc()); const DebugScope *ds = cb->debuginfo(cc.pc()); call = Bytecode_invoke_at(ds->method(), ds->bci()); } meth_sig = call->signature(); is_static = (call->adjusted_invoke_code() == Bytecodes::_invokestatic); } int argcnt = 0; // Size of signature if( !is_static ) argcnt++; // Add receiver for(SignatureStream ss(meth_sig);!ss.at_return_type();ss.next()){ argcnt++; if (ss.type() == T_LONG || ss.type() == T_DOUBLE) argcnt++; } BasicType * sig_bt = NEW_RESOURCE_ARRAY(BasicType ,argcnt); VReg::VR * regs = NEW_RESOURCE_ARRAY(VReg::VR,argcnt); int i=0; if( !is_static ) sig_bt[i++] = T_OBJECT; for(SignatureStream ss(meth_sig);!ss.at_return_type();ss.next()){ sig_bt[i++] = ss.type(); // Collect remaining bits of signature if (ss.type() == T_LONG || ss.type() == T_DOUBLE) sig_bt[i++] = T_VOID; // Longs & doubles take 2 Java slots } assert0(i==argcnt); // Now get the re-packed compiled-Java layout. Registers are numbered from // the callee's point of view. SharedRuntime::java_calling_convention(sig_bt,regs,argcnt,true); // Find the oop locations and do the GC thing for(int i=0;i<argcnt;i++){ if ((sig_bt[i] == T_OBJECT) || (sig_bt[i] == T_ARRAY)) { objectRef *loc = cc.reg_to_addr_oop(VReg::as_VOopReg(regs[i])); f->do_oop(loc); } } }
void PhaseLive::compute(uint maxlrg) { _maxlrg = maxlrg; _worklist = new (_arena) Block_List(); // Init the sparse live arrays. This data is live on exit from here! // The _live info is the live-out info. _live = (IndexSet*)_arena->Amalloc(sizeof(IndexSet)*_cfg._num_blocks); uint i; for( i=0; i<_cfg._num_blocks; i++ ) { _live[i].initialize(_maxlrg); } // Init the sparse arrays for delta-sets. ResourceMark rm; // Nuke temp storage on exit // Does the memory used by _defs and _deltas get reclaimed? Does it matter? TT // Array of values defined locally in blocks _defs = NEW_RESOURCE_ARRAY(IndexSet,_cfg._num_blocks); for( i=0; i<_cfg._num_blocks; i++ ) { _defs[i].initialize(_maxlrg); } // Array of delta-set pointers, indexed by block pre_order-1. _deltas = NEW_RESOURCE_ARRAY(IndexSet*,_cfg._num_blocks); memset( _deltas, 0, sizeof(IndexSet*)* _cfg._num_blocks); _free_IndexSet = NULL; // Blocks having done pass-1 VectorSet first_pass(Thread::current()->resource_area()); // Outer loop: must compute local live-in sets and push into predecessors. uint iters = _cfg._num_blocks; // stat counters for( uint j=_cfg._num_blocks; j>0; j-- ) { Block *b = _cfg._blocks[j-1]; // Compute the local live-in set. Start with any new live-out bits. IndexSet *use = getset( b ); IndexSet *def = &_defs[b->_pre_order-1]; uint i; for( i=b->_nodes.size(); i>1; i-- ) { Node *n = b->_nodes[i-1]; if( n->is_Phi() ) break; // BoxNodes keep their input alive as long as their uses. If we // see a BoxNode then make its input live to the Root block. // Because we are solving LIVEness, the input now becomes live // over the whole procedure, interferencing with everything else // and getting a private unshared stack slot. YeeeHaw! MachNode *mach = n->is_Mach(); if( mach && mach->ideal_Opcode() == Op_Box ) getset(_cfg._broot)->insert( _names[n->in(1)->_idx] ); uint r = _names[n->_idx]; def->insert( r ); use->remove( r ); uint cnt = n->req(); for( uint k=1; k<cnt; k++ ) { Node *nk = n->in(k); uint nkidx = nk->_idx; if( _cfg._bbs[nkidx] != b ) use->insert( _names[nkidx] ); } } // Remove anything defined by Phis and the block start instruction for( uint k=i; k>0; k-- ) { uint r = _names[b->_nodes[k-1]->_idx]; def->insert( r ); use->remove( r ); } // Push these live-in things to predecessors for( uint l=1; l<b->num_preds(); l++ ) { Block *p = _cfg._bbs[b->pred(l)->_idx]; add_liveout( p, use, first_pass ); // PhiNode uses go in the live-out set of prior blocks. for( uint k=i; k>0; k-- ) add_liveout( p, _names[b->_nodes[k-1]->in(l)->_idx], first_pass ); } freeset( b ); first_pass.set(b->_pre_order); // Inner loop: blocks that picked up new live-out values to be propagated while( _worklist->size() ) { // !!!!! // #ifdef ASSERT iters++; // #endif Block *b = _worklist->pop(); IndexSet *delta = getset(b); assert( delta->count(), "missing delta set" ); // Add new-live-in to predecessors live-out sets for( uint l=1; l<b->num_preds(); l++ ) add_liveout( _cfg._bbs[b->pred(l)->_idx], delta, first_pass ); freeset(b); } // End of while-worklist-not-empty } // End of for-all-blocks-outer-loop // We explicitly clear all of the IndexSets which we are about to release. // This allows us to recycle their internal memory into IndexSet's free list. for( i=0; i<_cfg._num_blocks; i++ ) { _defs[i].clear(); if (_deltas[i]) { // Is this always true? _deltas[i]->clear(); } } IndexSet *free = _free_IndexSet; while (free != NULL) { IndexSet *temp = free; free = free->next(); temp->clear(); } }
ExceptionHandlerTable::ExceptionHandlerTable(int initial_size) { guarantee(initial_size > 0, "initial size must be > 0"); _table = NEW_RESOURCE_ARRAY(HandlerTableEntry, initial_size); _length = 0; _size = initial_size; }
// ---------------------------------------------------------------------------- // Implicit null exception tables. Maps an exception PC offset to a // continuation PC offset. During construction it's a variable sized // array with a max size and current length. When stored inside an // nmethod a zero length table takes no space. This is detected by // nul_chk_table_size() == 0. Otherwise the table has a length word // followed by pairs of <excp-offset, const-offset>. void ImplicitExceptionTable::set_size( uint size ) { _size = size; _data = NEW_RESOURCE_ARRAY(implicit_null_entry, (size*2)); _len = 0; }
void PhaseLive::compute(uint maxlrg) { _maxlrg = maxlrg; _worklist = new (_arena) Block_List(); // Init the sparse live arrays. This data is live on exit from here! // The _live info is the live-out info. _live = (IndexSet*)_arena->Amalloc(sizeof(IndexSet) * _cfg.number_of_blocks()); uint i; for (i = 0; i < _cfg.number_of_blocks(); i++) { _live[i].initialize(_maxlrg); } if (_keep_deltas) { _livein = (IndexSet*)_arena->Amalloc(sizeof(IndexSet) * _cfg.number_of_blocks()); for (i = 0; i < _cfg.number_of_blocks(); i++) { _livein[i].initialize(_maxlrg); } } // Init the sparse arrays for delta-sets. ResourceMark rm; // Nuke temp storage on exit // Does the memory used by _defs and _deltas get reclaimed? Does it matter? TT // Array of values defined locally in blocks _defs = NEW_RESOURCE_ARRAY(IndexSet,_cfg.number_of_blocks()); for (i = 0; i < _cfg.number_of_blocks(); i++) { _defs[i].initialize(_maxlrg); } // Array of delta-set pointers, indexed by block pre_order-1. _deltas = NEW_RESOURCE_ARRAY(IndexSet*,_cfg.number_of_blocks()); memset( _deltas, 0, sizeof(IndexSet*)* _cfg.number_of_blocks()); _free_IndexSet = NULL; // Blocks having done pass-1 VectorSet first_pass(Thread::current()->resource_area()); // Outer loop: must compute local live-in sets and push into predecessors. for (uint j = _cfg.number_of_blocks(); j > 0; j--) { Block* block = _cfg.get_block(j - 1); // Compute the local live-in set. Start with any new live-out bits. IndexSet* use = getset(block); IndexSet* def = &_defs[block->_pre_order-1]; DEBUG_ONLY(IndexSet *def_outside = getfreeset();) uint i; for (i = block->number_of_nodes(); i > 1; i--) { Node* n = block->get_node(i-1); if (n->is_Phi()) { break; } uint r = _names.at(n->_idx); assert(!def_outside->member(r), "Use of external LRG overlaps the same LRG defined in this block"); def->insert( r ); use->remove( r ); uint cnt = n->req(); for (uint k = 1; k < cnt; k++) { Node *nk = n->in(k); uint nkidx = nk->_idx; if (_cfg.get_block_for_node(nk) != block) { uint u = _names.at(nkidx); use->insert(u); DEBUG_ONLY(def_outside->insert(u);) } } }
//------------------------------set_oop---------------------------------------- void PhaseRegAlloc::set_oop( const Node *n, bool is_an_oop ) { if( is_an_oop ) { _node_oops.set(n->_idx); } } //------------------------------is_oop----------------------------------------- bool PhaseRegAlloc::is_oop( const Node *n ) const { return _node_oops.test(n->_idx) != 0; } // Allocate _node_regs table with at least "size" elements void PhaseRegAlloc::alloc_node_regs(int size) { _node_regs_max_index = size + (size >> 1) + NodeRegsOverflowSize; _node_regs = NEW_RESOURCE_ARRAY( OptoRegPair, _node_regs_max_index ); // We assume our caller will fill in all elements up to size-1, so // only the extra space we allocate is initialized here. for( uint i = size; i < _node_regs_max_index; ++i ) _node_regs[i].set_bad(); } #ifndef PRODUCT void PhaseRegAlloc::print_statistics() { tty->print_cr("Total frameslots = %d, Max frameslots = %d", _total_framesize, _max_framesize); int i; for (i=0; i < _num_allocators; i++) { _alloc_statistics[i](); }
int DTraceJSDT::pd_activate( void* moduleBaseAddress, jstring module, jint providers_count, JVM_DTraceProvider* providers) { // We need sections: // (1) STRTAB // ( // (2) PROVIDER // (3) PROBES // (4) PROBOFFS // (5) PROBARGS // ) * Number of Providers // Type of sections we create enum { STRTAB = 0, PROVIDERS = 1, PROBES = 2, PROBE_OFFSETS = 3, ARG_OFFSETS = 4, NUM_SECTIONS = 5 }; static int alignment_for[NUM_SECTIONS] = { 1, 4, 8, 4, 1 }; ResourceMark rm; uint32_t num_sections = 1 + 4 * providers_count; uint32_t offset = sizeof(dof_hdr_t) + (num_sections * sizeof(dof_sec_t)); uint32_t* secoffs = NEW_RESOURCE_ARRAY(uint32_t, num_sections); uint32_t* secsize = NEW_RESOURCE_ARRAY(uint32_t, num_sections); // Store offsets of all strings here in such order: // zero-string (always 0) // provider1-name // probe1-function // probe1-name // arg-1 // arg-2 // ... // probe2-function // probe2-name // arg-1 // arg-2 // provider2-name // ... uint32_t strcount = 0; // Count the number of strings we'll need for(int prvc = 0; prvc < providers_count; ++prvc) { JVM_DTraceProvider* provider = &providers[prvc]; // Provider name ++strcount; for(int prbc = 0; prbc < provider->probe_count; ++prbc) { JVM_DTraceProbe* p = &(provider->probes[prbc]); symbolOop sig = JNIHandles::resolve_jmethod_id(p->method)->signature(); // function + name + one per argument strcount += 2 + ArgumentCount(sig).size(); } } // Create place for string offsets uint32_t* stroffs = NEW_RESOURCE_ARRAY(uint32_t, strcount + 1); uint32_t string_index = 0; uint32_t curstr = 0; // First we need an empty string: "" stroffs[curstr++] = string_index; string_index += strlen("") + 1; for(int prvc = 0; prvc < providers_count; ++prvc) { JVM_DTraceProvider* provider = &providers[prvc]; char* provider_name = java_lang_String::as_utf8_string( JNIHandles::resolve_non_null(provider->name)); stroffs[curstr++] = string_index; string_index += strlen(provider_name) + 1; // All probes for(int prbc = 0; prbc < provider->probe_count; ++prbc) { JVM_DTraceProbe* p = &(provider->probes[prbc]); char* function = java_lang_String::as_utf8_string( JNIHandles::resolve_non_null(p->function)); stroffs[curstr++] = string_index; string_index += strlen(function) + 1; char* name = java_lang_String::as_utf8_string( JNIHandles::resolve_non_null(p->name)); stroffs[curstr++] = string_index; string_index += strlen(name) + 1; symbolOop sig = JNIHandles::resolve_jmethod_id(p->method)->signature(); SignatureStream ss(sig); for ( ; !ss.at_return_type(); ss.next()) { BasicType bt = ss.type(); const char* t = NULL; if (bt == T_OBJECT && ss.as_symbol_or_null() == vmSymbols::java_lang_String()) { t = string_sig; } else if (bt == T_LONG) { t = long_sig; } else { t = int_sig; } stroffs[curstr++] = string_index; string_index += strlen(t) + 1; } } } secoffs[STRTAB] = offset; secsize[STRTAB] = string_index; offset += string_index; // Calculate the size of the rest for(int prvc = 0; prvc < providers_count; ++prvc) { JVM_DTraceProvider* provider = &providers[prvc]; size_t provider_sec = PROVIDERS + prvc * 4; size_t probe_sec = PROBES + prvc * 4; size_t probeoffs_sec = PROBE_OFFSETS + prvc * 4; size_t argoffs_sec = ARG_OFFSETS + prvc * 4; // Allocate space for the provider data struction secoffs[provider_sec] = align_size_up(offset, alignment_for[PROVIDERS]); secsize[provider_sec] = sizeof(dof_provider_t); offset = secoffs[provider_sec] + secsize[provider_sec]; // Allocate space for all the probes secoffs[probe_sec] = align_size_up(offset, alignment_for[PROBES]); secsize[probe_sec] = sizeof(dof_probe_t) * provider->probe_count; offset = secoffs[probe_sec] + secsize[probe_sec]; // Allocate space for the probe offsets secoffs[probeoffs_sec] = align_size_up(offset, alignment_for[PROBE_OFFSETS]); secsize[probeoffs_sec] = sizeof(uint32_t) * provider->probe_count; offset = secoffs[probeoffs_sec] + secsize[probeoffs_sec]; // We need number of arguments argoffs uint32_t argscount = 0; for(int prbc = 0; prbc < provider->probe_count; ++prbc) { JVM_DTraceProbe* p = &(provider->probes[prbc]); symbolOop sig = JNIHandles::resolve_jmethod_id(p->method)->signature(); argscount += ArgumentCount(sig).size(); } secoffs[argoffs_sec] = align_size_up(offset, alignment_for[ARG_OFFSETS]); secsize[argoffs_sec] = sizeof(uint8_t) * argscount; offset = secoffs[argoffs_sec] + secsize[argoffs_sec]; } uint32_t size = offset; uint8_t* dof = NEW_RESOURCE_ARRAY(uint8_t, size); if (!dof) { return -1; } memset((void*)dof, 0, size); // Fill memory with proper values dof_hdr_t* hdr = (dof_hdr_t*)dof; hdr->dofh_ident[DOF_ID_MAG0] = DOF_MAG_MAG0; hdr->dofh_ident[DOF_ID_MAG1] = DOF_MAG_MAG1; hdr->dofh_ident[DOF_ID_MAG2] = DOF_MAG_MAG2; hdr->dofh_ident[DOF_ID_MAG3] = DOF_MAG_MAG3; hdr->dofh_ident[DOF_ID_MODEL] = DOF_MODEL_NATIVE; // No variants hdr->dofh_ident[DOF_ID_ENCODING] = DOF_ENCODE_NATIVE; // No variants hdr->dofh_ident[DOF_ID_VERSION] = DOF_VERSION_1; // No variants hdr->dofh_ident[DOF_ID_DIFVERS] = DIF_VERSION_2; // No variants // all other fields of ident to zero hdr->dofh_flags = 0; hdr->dofh_hdrsize = sizeof(dof_hdr_t); hdr->dofh_secsize = sizeof(dof_sec_t); hdr->dofh_secnum = num_sections; hdr->dofh_secoff = sizeof(dof_hdr_t); hdr->dofh_loadsz = size; hdr->dofh_filesz = size; // First section: STRTAB dof_sec_t* sec = (dof_sec_t*)(dof + sizeof(dof_hdr_t)); sec->dofs_type = DOF_SECT_STRTAB; sec->dofs_align = alignment_for[STRTAB]; sec->dofs_flags = DOF_SECF_LOAD; sec->dofs_entsize = 0; sec->dofs_offset = secoffs[STRTAB]; sec->dofs_size = secsize[STRTAB]; // Make data for this section char* str = (char*)(dof + sec->dofs_offset); *str = 0; str += 1; // "" // Run through all strings again for(int prvc = 0; prvc < providers_count; ++prvc) { JVM_DTraceProvider* provider = &providers[prvc]; char* provider_name = java_lang_String::as_utf8_string( JNIHandles::resolve_non_null(provider->name)); strcpy(str, provider_name); str += strlen(provider_name) + 1; // All probes for(int prbc = 0; prbc < provider->probe_count; ++prbc) { JVM_DTraceProbe* p = &(provider->probes[prbc]); char* function = java_lang_String::as_utf8_string( JNIHandles::resolve_non_null(p->function)); strcpy(str, function); str += strlen(str) + 1; char* name = java_lang_String::as_utf8_string( JNIHandles::resolve_non_null(p->name)); strcpy(str, name); str += strlen(name) + 1; symbolOop sig = JNIHandles::resolve_jmethod_id(p->method)->signature(); SignatureStream ss(sig); for ( ; !ss.at_return_type(); ss.next()) { BasicType bt = ss.type(); const char* t; if (bt == T_OBJECT && ss.as_symbol_or_null() == vmSymbols::java_lang_String()) { t = string_sig; } else if (bt == T_LONG) { t = long_sig; } else { t = int_sig; } strcpy(str, t); str += strlen(t) + 1; } } } curstr = 1; for(int prvc = 0; prvc < providers_count; ++prvc) { JVM_DTraceProvider* provider = &providers[prvc]; size_t provider_sec = PROVIDERS + prvc * 4; size_t probe_sec = PROBES + prvc * 4; size_t probeoffs_sec = PROBE_OFFSETS + prvc * 4; size_t argoffs_sec = ARG_OFFSETS + prvc * 4; // PROVIDER /////////////////////////////////////////////////////////////// // Section header sec = (dof_sec_t*) (dof + sizeof(dof_hdr_t) + sizeof(dof_sec_t) * provider_sec); sec->dofs_type = DOF_SECT_PROVIDER; sec->dofs_align = alignment_for[PROVIDERS]; sec->dofs_flags = DOF_SECF_LOAD; sec->dofs_entsize = 0; sec->dofs_offset = secoffs[provider_sec]; sec->dofs_size = secsize[provider_sec]; // Make provider decriiption dof_provider_t* prv = (dof_provider_t*)(dof + sec->dofs_offset); prv->dofpv_strtab = STRTAB; prv->dofpv_probes = probe_sec; prv->dofpv_prargs = argoffs_sec; prv->dofpv_proffs = probeoffs_sec; prv->dofpv_name = stroffs[curstr++]; // Index in string table prv->dofpv_provattr = DOF_ATTR( provider->providerAttributes.nameStability, provider->providerAttributes.dataStability, provider->providerAttributes.dependencyClass); prv->dofpv_modattr = DOF_ATTR( provider->moduleAttributes.nameStability, provider->moduleAttributes.dataStability, provider->moduleAttributes.dependencyClass); prv->dofpv_funcattr = DOF_ATTR( provider->functionAttributes.nameStability, provider->functionAttributes.dataStability, provider->functionAttributes.dependencyClass); prv->dofpv_nameattr = DOF_ATTR( provider->nameAttributes.nameStability, provider->nameAttributes.dataStability, provider->nameAttributes.dependencyClass); prv->dofpv_argsattr = DOF_ATTR( provider->argsAttributes.nameStability, provider->argsAttributes.dataStability, provider->argsAttributes.dependencyClass); // PROBES ///////////////////////////////////////////////////////////////// // Section header sec = (dof_sec_t*) (dof + sizeof(dof_hdr_t) + sizeof(dof_sec_t) * probe_sec); sec->dofs_type = DOF_SECT_PROBES; sec->dofs_align = alignment_for[PROBES]; sec->dofs_flags = DOF_SECF_LOAD; sec->dofs_entsize = sizeof(dof_probe_t); sec->dofs_offset = secoffs[probe_sec]; sec->dofs_size = secsize[probe_sec]; // Make probes descriptions uint32_t argsoffs = 0; for(int prbc = 0; prbc < provider->probe_count; ++prbc) { JVM_DTraceProbe* probe = &(provider->probes[prbc]); methodOop m = JNIHandles::resolve_jmethod_id(probe->method); int arg_count = ArgumentCount(m->signature()).size(); assert(m->code() != NULL, "must have an nmethod"); dof_probe_t* prb = (dof_probe_t*)(dof + sec->dofs_offset + prbc * sizeof(dof_probe_t)); prb->dofpr_addr = (uint64_t)m->code()->entry_point(); prb->dofpr_func = stroffs[curstr++]; // Index in string table prb->dofpr_name = stroffs[curstr++]; // Index in string table prb->dofpr_nargv = stroffs[curstr ]; // Index in string table // We spent siglen strings here curstr += arg_count; prb->dofpr_xargv = prb->dofpr_nargv; // Same bunch of strings prb->dofpr_argidx = argsoffs; prb->dofpr_offidx = prbc; prb->dofpr_nargc = arg_count; prb->dofpr_xargc = arg_count; prb->dofpr_noffs = 1; // Number of offsets // Next bunch of offsets argsoffs += arg_count; } // PROFFS ///////////////////////////////////////////////////////////////// // Section header sec = (dof_sec_t*) (dof + sizeof(dof_hdr_t) + sizeof(dof_sec_t) * probeoffs_sec); sec->dofs_type = DOF_SECT_PROFFS; sec->dofs_align = alignment_for[PROBE_OFFSETS]; sec->dofs_flags = DOF_SECF_LOAD; sec->dofs_entsize = sizeof(uint32_t); sec->dofs_offset = secoffs[probeoffs_sec]; sec->dofs_size = secsize[probeoffs_sec]; // Make offsets for (int prbc = 0; prbc < provider->probe_count; ++prbc) { uint32_t* pof = (uint32_t*)(dof + sec->dofs_offset + sizeof(uint32_t) * prbc); JVM_DTraceProbe* probe = &(provider->probes[prbc]); methodOop m = JNIHandles::resolve_jmethod_id(probe->method); *pof = m->code()->trap_offset(); } // PRARGS ///////////////////////////////////////////////////////////////// // Section header sec = (dof_sec_t*) (dof + sizeof(dof_hdr_t) + sizeof(dof_sec_t) * argoffs_sec); sec->dofs_type = DOF_SECT_PRARGS; sec->dofs_align = alignment_for[ARG_OFFSETS]; sec->dofs_flags = DOF_SECF_LOAD; sec->dofs_entsize = sizeof(uint8_t); sec->dofs_offset = secoffs[argoffs_sec]; sec->dofs_size = secsize[argoffs_sec]; // Make arguments uint8_t* par = (uint8_t*)(dof + sec->dofs_offset); for (int prbc = 0; prbc < provider->probe_count; ++prbc) { JVM_DTraceProbe* p = &(provider->probes[prbc]); symbolOop sig = JNIHandles::resolve_jmethod_id(p->method)->signature(); uint8_t count = (uint8_t)ArgumentCount(sig).size(); for (uint8_t i = 0; i < count; ++i) { *par++ = i; } } } // Register module return dof_register(module, dof, moduleBaseAddress); }
//============================================================================= //------------------------------UnionFind-------------------------------------- UnionFind::UnionFind( uint max ) : _cnt(max), _max(max), _indices(NEW_RESOURCE_ARRAY(uint,max)) { Copy::zero_to_bytes( _indices, sizeof(uint)*max ); }