Mercurial > jdk8-mips64-public > nashorn / file comparison
comparison: src/jdk/internal/dynalink/DynamicLinker.java
src/jdk/internal/dynalink/DynamicLinker.java
- changeset 101
- f8221ce53c2e
- parent 90
- 5a820fb11814
- child 443
- 01212f5e7dad
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| 100:3245e174fe3a | 101:f8221ce53c2e |
|---|---|
| 94 import jdk.internal.dynalink.linker.LinkerServices; | 94 import jdk.internal.dynalink.linker.LinkerServices; |
| 95 import jdk.internal.dynalink.support.CallSiteDescriptorFactory; | 95 import jdk.internal.dynalink.support.CallSiteDescriptorFactory; |
| 96 import jdk.internal.dynalink.support.LinkRequestImpl; | 96 import jdk.internal.dynalink.support.LinkRequestImpl; |
| 97 import jdk.internal.dynalink.support.Lookup; | 97 import jdk.internal.dynalink.support.Lookup; |
| 98 import jdk.internal.dynalink.support.RuntimeContextLinkRequestImpl; | 98 import jdk.internal.dynalink.support.RuntimeContextLinkRequestImpl; |
| 99 | |
| 100 | 99 |
| 101 /** | 100 /** |
| 102 * The linker for {@link RelinkableCallSite} objects. Users of it (scripting frameworks and language runtimes) have to | 101 * The linker for {@link RelinkableCallSite} objects. Users of it (scripting frameworks and language runtimes) have to |
| 103 * create a linker using the {@link DynamicLinkerFactory} and invoke its link method from the invokedynamic bootstrap | 102 * create a linker using the {@link DynamicLinkerFactory} and invoke its link method from the invokedynamic bootstrap |
| 104 * methods to set the target of all the call sites in the code they generate. Usual usage would be to create one class | 103 * methods to set the target of all the call sites in the code they generate. Usual usage would be to create one class |
| 244 final MethodHandle guard = guardedInvocation.getGuard(); | 243 final MethodHandle guard = guardedInvocation.getGuard(); |
| 245 guardedInvocation = guardedInvocation.dropArguments(1, prefix); | 244 guardedInvocation = guardedInvocation.dropArguments(1, prefix); |
| 246 } | 245 } |
| 247 } | 246 } |
| 248 | 247 |
| 249 if(unstableDetectionEnabled && relinkCount <= unstableRelinkThreshold && relinkCount++ == unstableRelinkThreshold) { | 248 int newRelinkCount = relinkCount; |
| 250 // Note that we'll increase the relinkCount until threshold+1 and not increase it beyond that. Threshold+1 | 249 // Note that the short-circuited "&&" evaluation below ensures we'll increment the relinkCount until |
| 251 // is treated as a special value to signal that resetAndRelink has already executed once for the unstable | 250 // threshold + 1 but not beyond that. Threshold + 1 is treated as a special value to signal that resetAndRelink |
| 252 // call site; we only want the call site to throw away its current linkage once, when it transitions to | 251 // has already executed once for the unstable call site; we only want the call site to throw away its current |
| 253 // unstable. | 252 // linkage once, when it transitions to unstable. |
| 254 callSite.resetAndRelink(guardedInvocation, createRelinkAndInvokeMethod(callSite, relinkCount)); | 253 if(unstableDetectionEnabled && newRelinkCount <= unstableRelinkThreshold && newRelinkCount++ == unstableRelinkThreshold) { |
| 254 callSite.resetAndRelink(guardedInvocation, createRelinkAndInvokeMethod(callSite, newRelinkCount)); | |
| 255 } else { | 255 } else { |
| 256 callSite.relink(guardedInvocation, createRelinkAndInvokeMethod(callSite, relinkCount)); | 256 callSite.relink(guardedInvocation, createRelinkAndInvokeMethod(callSite, newRelinkCount)); |
| 257 } | 257 } |
| 258 if(syncOnRelink) { | 258 if(syncOnRelink) { |
| 259 MutableCallSite.syncAll(new MutableCallSite[] { (MutableCallSite)callSite }); | 259 MutableCallSite.syncAll(new MutableCallSite[] { (MutableCallSite)callSite }); |
| 260 } | 260 } |
| 261 return guardedInvocation.getInvocation(); | 261 return guardedInvocation.getInvocation(); |
