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 *
23 */
24
25 #include "precompiled.hpp"
26 #include "classfile/symbolTable.hpp"
27 #include "classfile/systemDictionary.hpp"
28 #include "classfile/vmSymbols.hpp"
29 #include "code/codeCache.hpp"
30 #include "code/dependencyContext.hpp"
31 #include "compiler/compileBroker.hpp"
32 #include "compiler/compileLog.hpp"
33 #include "compiler/compilerOracle.hpp"
34 #include "compiler/directivesParser.hpp"
35 #include "gc/shared/referencePendingListLocker.hpp"
36 #include "interpreter/linkResolver.hpp"
37 #include "memory/allocation.inline.hpp"
38 #include "oops/methodData.hpp"
39 #include "oops/method.hpp"
40 #include "oops/oop.inline.hpp"
41 #include "prims/nativeLookup.hpp"
42 #include "prims/whitebox.hpp"
43 #include "runtime/arguments.hpp"
44 #include "runtime/atomic.inline.hpp"
45 #include "runtime/compilationPolicy.hpp"
46 #include "runtime/init.hpp"
47 #include "runtime/interfaceSupport.hpp"
48 #include "runtime/javaCalls.hpp"
49 #include "runtime/os.hpp"
50 #include "runtime/sharedRuntime.hpp"
51 #include "runtime/sweeper.hpp"
52 #include "runtime/timerTrace.hpp"
53 #include "trace/tracing.hpp"
54 #include "utilities/dtrace.hpp"
55 #include "utilities/events.hpp"
884 // Positive OSROnlyBCI means only compile that bci. Negative means don't compile that BCI.
885 return;
886 }
887 }
888 #endif
889
890 // If this method is already in the compile queue, then
891 // we do not block the current thread.
892 if (compilation_is_in_queue(method)) {
893 // We may want to decay our counter a bit here to prevent
894 // multiple denied requests for compilation. This is an
895 // open compilation policy issue. Note: The other possibility,
896 // in the case that this is a blocking compile request, is to have
897 // all subsequent blocking requesters wait for completion of
898 // ongoing compiles. Note that in this case we'll need a protocol
899 // for freeing the associated compile tasks. [Or we could have
900 // a single static monitor on which all these waiters sleep.]
901 return;
902 }
903
904 // If the requesting thread is holding the pending list lock
905 // then we just return. We can't risk blocking while holding
906 // the pending list lock or a 3-way deadlock may occur
907 // between the reference handler thread, a GC (instigated
908 // by a compiler thread), and compiled method registration.
909 if (ReferencePendingListLocker::is_locked_by_self()) {
910 return;
911 }
912
913 if (TieredCompilation) {
914 // Tiered policy requires MethodCounters to exist before adding a method to
915 // the queue. Create if we don't have them yet.
916 method->get_method_counters(thread);
917 }
918
919 // Outputs from the following MutexLocker block:
920 CompileTask* task = NULL;
921 bool blocking = false;
922 CompileQueue* queue = compile_queue(comp_level);
923
924 // Acquire our lock.
925 {
926 MutexLocker locker(MethodCompileQueue_lock, thread);
927
928 // Make sure the method has not slipped into the queues since
929 // last we checked; note that those checks were "fast bail-outs".
930 // Here we need to be more careful, see 14012000 below.
931 if (compilation_is_in_queue(method)) {
932 return;
1294 // CICountOSR is a develop flag and set to 'false' by default. In a product built,
1295 // only _compilation_id is incremented.
1296 return Atomic::add(1, &_compilation_id);
1297 #endif
1298 }
1299
1300 // ------------------------------------------------------------------
1301 // CompileBroker::assign_compile_id_unlocked
1302 //
1303 // Public wrapper for assign_compile_id that acquires the needed locks
1304 uint CompileBroker::assign_compile_id_unlocked(Thread* thread, const methodHandle& method, int osr_bci) {
1305 MutexLocker locker(MethodCompileQueue_lock, thread);
1306 return assign_compile_id(method, osr_bci);
1307 }
1308
1309 /**
1310 * Should the current thread block until this compilation request
1311 * has been fulfilled?
1312 */
1313 bool CompileBroker::is_compile_blocking() {
1314 assert(!ReferencePendingListLocker::is_locked_by_self(), "possible deadlock");
1315 return !BackgroundCompilation;
1316 }
1317
1318
1319 // ------------------------------------------------------------------
1320 // CompileBroker::preload_classes
1321 void CompileBroker::preload_classes(const methodHandle& method, TRAPS) {
1322 // Move this code over from c1_Compiler.cpp
1323 ShouldNotReachHere();
1324 }
1325
1326
1327 // ------------------------------------------------------------------
1328 // CompileBroker::create_compile_task
1329 //
1330 // Create a CompileTask object representing the current request for
1331 // compilation. Add this task to the queue.
1332 CompileTask* CompileBroker::create_compile_task(CompileQueue* queue,
1333 int compile_id,
1334 const methodHandle& method,
|
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 *
23 */
24
25 #include "precompiled.hpp"
26 #include "classfile/symbolTable.hpp"
27 #include "classfile/systemDictionary.hpp"
28 #include "classfile/vmSymbols.hpp"
29 #include "code/codeCache.hpp"
30 #include "code/dependencyContext.hpp"
31 #include "compiler/compileBroker.hpp"
32 #include "compiler/compileLog.hpp"
33 #include "compiler/compilerOracle.hpp"
34 #include "compiler/directivesParser.hpp"
35 #include "interpreter/linkResolver.hpp"
36 #include "memory/allocation.inline.hpp"
37 #include "oops/methodData.hpp"
38 #include "oops/method.hpp"
39 #include "oops/oop.inline.hpp"
40 #include "prims/nativeLookup.hpp"
41 #include "prims/whitebox.hpp"
42 #include "runtime/arguments.hpp"
43 #include "runtime/atomic.inline.hpp"
44 #include "runtime/compilationPolicy.hpp"
45 #include "runtime/init.hpp"
46 #include "runtime/interfaceSupport.hpp"
47 #include "runtime/javaCalls.hpp"
48 #include "runtime/os.hpp"
49 #include "runtime/sharedRuntime.hpp"
50 #include "runtime/sweeper.hpp"
51 #include "runtime/timerTrace.hpp"
52 #include "trace/tracing.hpp"
53 #include "utilities/dtrace.hpp"
54 #include "utilities/events.hpp"
883 // Positive OSROnlyBCI means only compile that bci. Negative means don't compile that BCI.
884 return;
885 }
886 }
887 #endif
888
889 // If this method is already in the compile queue, then
890 // we do not block the current thread.
891 if (compilation_is_in_queue(method)) {
892 // We may want to decay our counter a bit here to prevent
893 // multiple denied requests for compilation. This is an
894 // open compilation policy issue. Note: The other possibility,
895 // in the case that this is a blocking compile request, is to have
896 // all subsequent blocking requesters wait for completion of
897 // ongoing compiles. Note that in this case we'll need a protocol
898 // for freeing the associated compile tasks. [Or we could have
899 // a single static monitor on which all these waiters sleep.]
900 return;
901 }
902
903 if (TieredCompilation) {
904 // Tiered policy requires MethodCounters to exist before adding a method to
905 // the queue. Create if we don't have them yet.
906 method->get_method_counters(thread);
907 }
908
909 // Outputs from the following MutexLocker block:
910 CompileTask* task = NULL;
911 bool blocking = false;
912 CompileQueue* queue = compile_queue(comp_level);
913
914 // Acquire our lock.
915 {
916 MutexLocker locker(MethodCompileQueue_lock, thread);
917
918 // Make sure the method has not slipped into the queues since
919 // last we checked; note that those checks were "fast bail-outs".
920 // Here we need to be more careful, see 14012000 below.
921 if (compilation_is_in_queue(method)) {
922 return;
1284 // CICountOSR is a develop flag and set to 'false' by default. In a product built,
1285 // only _compilation_id is incremented.
1286 return Atomic::add(1, &_compilation_id);
1287 #endif
1288 }
1289
1290 // ------------------------------------------------------------------
1291 // CompileBroker::assign_compile_id_unlocked
1292 //
1293 // Public wrapper for assign_compile_id that acquires the needed locks
1294 uint CompileBroker::assign_compile_id_unlocked(Thread* thread, const methodHandle& method, int osr_bci) {
1295 MutexLocker locker(MethodCompileQueue_lock, thread);
1296 return assign_compile_id(method, osr_bci);
1297 }
1298
1299 /**
1300 * Should the current thread block until this compilation request
1301 * has been fulfilled?
1302 */
1303 bool CompileBroker::is_compile_blocking() {
1304 return !BackgroundCompilation;
1305 }
1306
1307
1308 // ------------------------------------------------------------------
1309 // CompileBroker::preload_classes
1310 void CompileBroker::preload_classes(const methodHandle& method, TRAPS) {
1311 // Move this code over from c1_Compiler.cpp
1312 ShouldNotReachHere();
1313 }
1314
1315
1316 // ------------------------------------------------------------------
1317 // CompileBroker::create_compile_task
1318 //
1319 // Create a CompileTask object representing the current request for
1320 // compilation. Add this task to the queue.
1321 CompileTask* CompileBroker::create_compile_task(CompileQueue* queue,
1322 int compile_id,
1323 const methodHandle& method,
|