jdk8-mips64-public/hotspot: src/share/vm/runtime/threadCritical.hpp@c07dd9be16e8

8013496: Code cache management command line options work only in special order. Another order of arguments does not deliver the second parameter to the jvm.
Summary: Moved check that ReservedCodeCacheSize >= InitialCodeCacheSize to Arguments::check_vm_args_consistency(). As a result, the ordering in which the two parameters are given to the VM is not relevant. Added a regression test.
Reviewed-by: kvn, twisti

     1 /*

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     3  * DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER.

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    12  * version 2 for more details (a copy is included in the LICENSE file that

    13  * accompanied this code).

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    25 #ifndef SHARE_VM_RUNTIME_THREADCRITICAL_HPP

    26 #define SHARE_VM_RUNTIME_THREADCRITICAL_HPP

    28 #include "memory/allocation.hpp"

    30 // ThreadCritical is used to protect short non-blocking critical sections.

    31 // This class must use no vm facilities that require initialization.

    32 // It is used very early in the vm's initialization, in allocation

    33 // code and other areas. ThreadCritical regions are reentrant.

    34 //

    35 // Due to race conditions during vm exit, some of the os level

    36 // synchronization primitives may not be deallocated at exit. It

    37 // is a good plan to implement the platform dependent sections of

    38 // code with resources that are recoverable during process

    39 // cleanup by the os. Calling the initialize method before use

    40 // is also problematic, it is best to use preinitialized primitives

    41 // if possible. As an example:

    42 //

    43 // mutex_t  mp  =  DEFAULTMUTEX;

    44 //

    45 // Also note that this class is declared as a StackObj to enforce

    46 // block structured short locks. It cannot be declared a ResourceObj

    47 // or CHeapObj, due to initialization issues.

    49 class ThreadCritical : public StackObj {

    50  friend class os;

    51  private:

    52   static void initialize();

    53   static void release();

    55  public:

    56   ThreadCritical();

    57   ~ThreadCritical();

    58 };

    60 #endif // SHARE_VM_RUNTIME_THREADCRITICAL_HPP

Mercurial > jdk8-mips64-public > hotspot / file revision

src/share/vm/runtime/threadCritical.hpp@c07dd9be16e8

src/share/vm/runtime/threadCritical.hpp