Mercurial > hg > truffle
annotate src/share/vm/runtime/reflectionCompat.hpp @ 1721:413ad0331a0c
6977924: Changes for 6975078 produce build error with certain gcc versions
Summary: The changes introduced for 6975078 assign badHeapOopVal to the _allocation field in the ResourceObj class. In 32 bit linux builds with certain versions of gcc this assignment will be flagged as an error while compiling allocation.cpp. In 32 bit builds the constant value badHeapOopVal (which is cast to an intptr_t) is negative. The _allocation field is typed as an unsigned intptr_t and gcc catches this as an error.
Reviewed-by: jcoomes, ysr, phh
author | johnc |
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date | Wed, 18 Aug 2010 10:59:06 -0700 |
parents | c18cbe5936b8 |
children | f95d63e2154a |
rev | line source |
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0 | 1 /* |
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19 * Please contact Oracle, 500 Oracle Parkway, Redwood Shores, CA 94065 USA |
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6941466: Oracle rebranding changes for Hotspot repositories
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21 * questions. |
0 | 22 * |
23 */ | |
24 | |
25 // During the development of the JDK 1.4 reflection implementation | |
26 // based on dynamic bytecode generation, it was hoped that the bulk of | |
27 // the native code for reflection could be removed. Unfortunately | |
28 // there is currently a significant cost associated with loading the | |
29 // stub classes which impacts startup time. Until this cost can be | |
30 // reduced, the JVM entry points JVM_InvokeMethod and | |
31 // JVM_NewInstanceFromConstructor are still needed; these and their | |
32 // dependents currently constitute the bulk of the native code for | |
33 // reflection. If this cost is reduced in the future, the | |
34 // NativeMethodAccessorImpl and NativeConstructorAccessorImpl classes | |
35 // can be removed from sun.reflect and all of the code guarded by this | |
36 // flag removed from the product build. (Non-product builds, | |
37 // specifically the "optimized" target, would retain the code so they | |
38 // could be dropped into earlier JDKs for comparative benchmarking.) | |
39 | |
40 //#ifndef PRODUCT | |
41 # define SUPPORT_OLD_REFLECTION | |
42 //#endif |