Global lock levels.
Introduce the notion of the mutators/GC being a shared-exclusive (aka
reader-writer) lock. Introduce globally ordered locks, analysable by
annotalysis, statically at compile time. Add locking attributes to
methods.
More subtly, remove the heap_lock_ and split between various locks that
are held for smaller periods (where work doesn't get blocked). Remove
buggy Dalvik style thread transitions. Make GC use CMS in all cases when
concurrent is enabled. Fix bug where suspend counts rather than debug
suspend counts were sent to JDWP. Move the PathClassLoader to
WellKnownClasses. In debugger refactor calls to send request and
possibly suspend. Break apart different VmWait thread states. Move
identity hash code to a shared method.
Change-Id: Icdbfc3ce3fcccd14341860ac7305d8e97b51f5c6
diff --git a/src/oat/jni/calling_convention.h b/src/oat/jni/calling_convention.h
index ae6c7ed..121d1f8 100644
--- a/src/oat/jni/calling_convention.h
+++ b/src/oat/jni/calling_convention.h
@@ -41,9 +41,9 @@
return result;
}
- // Register that holds result of this method
+ // Register that holds result of this method invocation.
virtual ManagedRegister ReturnRegister() = 0;
- // Register reserved for scratch usage during procedure calls
+ // Register reserved for scratch usage during procedure calls.
virtual ManagedRegister InterproceduralScratchRegister() = 0;
// Offset of Method within the frame
@@ -224,6 +224,8 @@
// Location where the return value of a call can be squirreled if another
// call is made following the native call
FrameOffset ReturnValueSaveLocation() const;
+ // Register that holds result if it is integer.
+ virtual ManagedRegister IntReturnRegister() = 0;
// Callee save registers to spill prior to native code (which may clobber)
virtual const std::vector<ManagedRegister>& CalleeSaveRegisters() const = 0;
@@ -232,10 +234,6 @@
virtual uint32_t CoreSpillMask() const = 0;
virtual uint32_t FpSpillMask() const = 0;
- // Returns true if the method register will have been clobbered during argument
- // set up
- virtual bool IsMethodRegisterClobberedPreCall() = 0;
-
// An extra scratch register live after the call
virtual ManagedRegister ReturnScratchRegister() const = 0;