1 /*
2 * Copyright (c) 2001, 2014, Oracle and/or its affiliates. All rights reserved.
3 * DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER.
4 *
5 * This code is free software; you can redistribute it and/or modify it
6 * under the terms of the GNU General Public License version 2 only, as
7 * published by the Free Software Foundation.
8 *
9 * This code is distributed in the hope that it will be useful, but WITHOUT
10 * ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or
11 * FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License
12 * version 2 for more details (a copy is included in the LICENSE file that
13 * accompanied this code).
14 *
15 * You should have received a copy of the GNU General Public License version
16 * 2 along with this work; if not, write to the Free Software Foundation,
17 * Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA.
18 *
19 * Please contact Oracle, 500 Oracle Parkway, Redwood Shores, CA 94065 USA
20 * or visit www.oracle.com if you need additional information or have any
21 * questions.
22 *
3230
3231 //------------------------------shared_unlock----------------------------------
3232 // Emit unlocking code.
3233 void GraphKit::shared_unlock(Node* box, Node* obj) {
3234 // bci is either a monitorenter bc or InvocationEntryBci
3235 // %%% SynchronizationEntryBCI is redundant; use InvocationEntryBci in interfaces
3236 assert(SynchronizationEntryBCI == InvocationEntryBci, "");
3237
3238 if( !GenerateSynchronizationCode )
3239 return;
3240 if (stopped()) { // Dead monitor?
3241 map()->pop_monitor(); // Kill monitor from debug info
3242 return;
3243 }
3244
3245 // Memory barrier to avoid floating things down past the locked region
3246 insert_mem_bar(Op_MemBarReleaseLock);
3247
3248 const TypeFunc *tf = OptoRuntime::complete_monitor_exit_Type();
3249 UnlockNode *unlock = new UnlockNode(C, tf);
3250 uint raw_idx = Compile::AliasIdxRaw;
3251 unlock->init_req( TypeFunc::Control, control() );
3252 unlock->init_req( TypeFunc::Memory , memory(raw_idx) );
3253 unlock->init_req( TypeFunc::I_O , top() ) ; // does no i/o
3254 unlock->init_req( TypeFunc::FramePtr, frameptr() );
3255 unlock->init_req( TypeFunc::ReturnAdr, top() );
3256
3257 unlock->init_req(TypeFunc::Parms + 0, obj);
3258 unlock->init_req(TypeFunc::Parms + 1, box);
3259 unlock = _gvn.transform(unlock)->as_Unlock();
3260
3261 Node* mem = reset_memory();
3262
3263 // unlock has no side-effects, sets few values
3264 set_predefined_output_for_runtime_call(unlock, mem, TypeRawPtr::BOTTOM);
3265
3266 // Kill monitor from debug info
3267 map()->pop_monitor( );
3268 }
3269
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1 /*
2 * Copyright (c) 2001, 2015, Oracle and/or its affiliates. All rights reserved.
3 * DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER.
4 *
5 * This code is free software; you can redistribute it and/or modify it
6 * under the terms of the GNU General Public License version 2 only, as
7 * published by the Free Software Foundation.
8 *
9 * This code is distributed in the hope that it will be useful, but WITHOUT
10 * ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or
11 * FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License
12 * version 2 for more details (a copy is included in the LICENSE file that
13 * accompanied this code).
14 *
15 * You should have received a copy of the GNU General Public License version
16 * 2 along with this work; if not, write to the Free Software Foundation,
17 * Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA.
18 *
19 * Please contact Oracle, 500 Oracle Parkway, Redwood Shores, CA 94065 USA
20 * or visit www.oracle.com if you need additional information or have any
21 * questions.
22 *
3230
3231 //------------------------------shared_unlock----------------------------------
3232 // Emit unlocking code.
3233 void GraphKit::shared_unlock(Node* box, Node* obj) {
3234 // bci is either a monitorenter bc or InvocationEntryBci
3235 // %%% SynchronizationEntryBCI is redundant; use InvocationEntryBci in interfaces
3236 assert(SynchronizationEntryBCI == InvocationEntryBci, "");
3237
3238 if( !GenerateSynchronizationCode )
3239 return;
3240 if (stopped()) { // Dead monitor?
3241 map()->pop_monitor(); // Kill monitor from debug info
3242 return;
3243 }
3244
3245 // Memory barrier to avoid floating things down past the locked region
3246 insert_mem_bar(Op_MemBarReleaseLock);
3247
3248 const TypeFunc *tf = OptoRuntime::complete_monitor_exit_Type();
3249 UnlockNode *unlock = new UnlockNode(C, tf);
3250 #ifdef ASSERT
3251 unlock->set_dbg_jvms(sync_jvms());
3252 #endif
3253 uint raw_idx = Compile::AliasIdxRaw;
3254 unlock->init_req( TypeFunc::Control, control() );
3255 unlock->init_req( TypeFunc::Memory , memory(raw_idx) );
3256 unlock->init_req( TypeFunc::I_O , top() ) ; // does no i/o
3257 unlock->init_req( TypeFunc::FramePtr, frameptr() );
3258 unlock->init_req( TypeFunc::ReturnAdr, top() );
3259
3260 unlock->init_req(TypeFunc::Parms + 0, obj);
3261 unlock->init_req(TypeFunc::Parms + 1, box);
3262 unlock = _gvn.transform(unlock)->as_Unlock();
3263
3264 Node* mem = reset_memory();
3265
3266 // unlock has no side-effects, sets few values
3267 set_predefined_output_for_runtime_call(unlock, mem, TypeRawPtr::BOTTOM);
3268
3269 // Kill monitor from debug info
3270 map()->pop_monitor( );
3271 }
3272
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