Mercurial > jdk8-mips64-public > hotspot / file comparison
comparison: src/share/vm/opto/library_call.cpp
src/share/vm/opto/library_call.cpp
- changeset 6358
- cdb71841f4bc
- parent 6312
- 04d32e7fad07
- child 6375
- 085b304a1cc5
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| 6355:e7cf34c87433 | 6358:cdb71841f4bc |
|---|---|
| 3235 | 3235 |
| 3236 //------------------------inline_native_isInterrupted------------------ | 3236 //------------------------inline_native_isInterrupted------------------ |
| 3237 // private native boolean java.lang.Thread.isInterrupted(boolean ClearInterrupted); | 3237 // private native boolean java.lang.Thread.isInterrupted(boolean ClearInterrupted); |
| 3238 bool LibraryCallKit::inline_native_isInterrupted() { | 3238 bool LibraryCallKit::inline_native_isInterrupted() { |
| 3239 // Add a fast path to t.isInterrupted(clear_int): | 3239 // Add a fast path to t.isInterrupted(clear_int): |
| 3240 // (t == Thread.current() && (!TLS._osthread._interrupted || !clear_int)) | 3240 // (t == Thread.current() && |
| 3241 // (!TLS._osthread._interrupted || WINDOWS_ONLY(false) NOT_WINDOWS(!clear_int))) | |
| 3241 // ? TLS._osthread._interrupted : /*slow path:*/ t.isInterrupted(clear_int) | 3242 // ? TLS._osthread._interrupted : /*slow path:*/ t.isInterrupted(clear_int) |
| 3242 // So, in the common case that the interrupt bit is false, | 3243 // So, in the common case that the interrupt bit is false, |
| 3243 // we avoid making a call into the VM. Even if the interrupt bit | 3244 // we avoid making a call into the VM. Even if the interrupt bit |
| 3244 // is true, if the clear_int argument is false, we avoid the VM call. | 3245 // is true, if the clear_int argument is false, we avoid the VM call. |
| 3245 // However, if the receiver is not currentThread, we must call the VM, | 3246 // However, if the receiver is not currentThread, we must call the VM, |
| 3292 result_val->init_req(no_int_result_path, intcon(0)); | 3293 result_val->init_req(no_int_result_path, intcon(0)); |
| 3293 | 3294 |
| 3294 // drop through to next case | 3295 // drop through to next case |
| 3295 set_control( _gvn.transform(new (C) IfTrueNode(iff_bit))); | 3296 set_control( _gvn.transform(new (C) IfTrueNode(iff_bit))); |
| 3296 | 3297 |
| 3298 #ifndef TARGET_OS_FAMILY_windows | |
| 3297 // (c) Or, if interrupt bit is set and clear_int is false, use 2nd fast path. | 3299 // (c) Or, if interrupt bit is set and clear_int is false, use 2nd fast path. |
| 3298 Node* clr_arg = argument(1); | 3300 Node* clr_arg = argument(1); |
| 3299 Node* cmp_arg = _gvn.transform(new (C) CmpINode(clr_arg, intcon(0))); | 3301 Node* cmp_arg = _gvn.transform(new (C) CmpINode(clr_arg, intcon(0))); |
| 3300 Node* bol_arg = _gvn.transform(new (C) BoolNode(cmp_arg, BoolTest::ne)); | 3302 Node* bol_arg = _gvn.transform(new (C) BoolNode(cmp_arg, BoolTest::ne)); |
| 3301 IfNode* iff_arg = create_and_map_if(control(), bol_arg, PROB_FAIR, COUNT_UNKNOWN); | 3303 IfNode* iff_arg = create_and_map_if(control(), bol_arg, PROB_FAIR, COUNT_UNKNOWN); |
| 3305 result_rgn->init_req(no_clear_result_path, false_arg); | 3307 result_rgn->init_req(no_clear_result_path, false_arg); |
| 3306 result_val->init_req(no_clear_result_path, intcon(1)); | 3308 result_val->init_req(no_clear_result_path, intcon(1)); |
| 3307 | 3309 |
| 3308 // drop through to next case | 3310 // drop through to next case |
| 3309 set_control( _gvn.transform(new (C) IfTrueNode(iff_arg))); | 3311 set_control( _gvn.transform(new (C) IfTrueNode(iff_arg))); |
| 3312 #else | |
| 3313 // To return true on Windows you must read the _interrupted field | |
| 3314 // and check the the event state i.e. take the slow path. | |
| 3315 #endif // TARGET_OS_FAMILY_windows | |
| 3310 | 3316 |
| 3311 // (d) Otherwise, go to the slow path. | 3317 // (d) Otherwise, go to the slow path. |
| 3312 slow_region->add_req(control()); | 3318 slow_region->add_req(control()); |
| 3313 set_control( _gvn.transform(slow_region)); | 3319 set_control( _gvn.transform(slow_region)); |
| 3314 | 3320 |
