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24 
25 #ifndef SHARE_PRIMS_JVMTIMANAGECAPABILITIES_HPP
26 #define SHARE_PRIMS_JVMTIMANAGECAPABILITIES_HPP
27 
28 #include "jvmtifiles/jvmti.h"
29 #include "memory/allocation.hpp"
30 
31 class JvmtiManageCapabilities : public AllStatic {
32 
33 private:
34 
35   // these four capabilities sets represent all potentially
36   // available capabilities.  They are disjoint, covering
37   // the four cases: (OnLoad vs OnLoad+live phase) X
38   // (one environment vs any environment).
39   static jvmtiCapabilities always_capabilities;
40   static jvmtiCapabilities onload_capabilities;
41   static jvmtiCapabilities always_solo_capabilities;
42   static jvmtiCapabilities onload_solo_capabilities;
43 
44   // solo capabilities that have not been grabbed
45   static jvmtiCapabilities always_solo_remaining_capabilities;
46   static jvmtiCapabilities onload_solo_remaining_capabilities;
47 
48   // all capabilities ever acquired
49   static jvmtiCapabilities acquired_capabilities;
50 
51   // basic intenal operations
52   static jvmtiCapabilities *either(const jvmtiCapabilities *a, const jvmtiCapabilities *b, jvmtiCapabilities *result);
53   static jvmtiCapabilities *both(const jvmtiCapabilities *a, const jvmtiCapabilities *b, jvmtiCapabilities *result);
54   static jvmtiCapabilities *exclude(const jvmtiCapabilities *a, const jvmtiCapabilities *b, jvmtiCapabilities *result);
55   static bool has_some(const jvmtiCapabilities *a);
56   static void update();
57 
58   // init functions
59   static jvmtiCapabilities init_always_capabilities();
60   static jvmtiCapabilities init_onload_capabilities();
61   static jvmtiCapabilities init_always_solo_capabilities();
62   static jvmtiCapabilities init_onload_solo_capabilities();
63 
64 public:
65   static void initialize();
66 
67   // queries and actions
68   static void get_potential_capabilities(const jvmtiCapabilities *current,
69                                          const jvmtiCapabilities *prohibited,
70                                          jvmtiCapabilities *result);
71   static jvmtiError add_capabilities(const jvmtiCapabilities *current,
72                                      const jvmtiCapabilities *prohibited,
73                                      const jvmtiCapabilities *desired,
74                                      jvmtiCapabilities *result);
75   static void relinquish_capabilities(const jvmtiCapabilities *current,
76                                       const jvmtiCapabilities *unwanted,
77                                       jvmtiCapabilities *result);
78   static void copy_capabilities(const jvmtiCapabilities *from, jvmtiCapabilities *to);
79 
80 #ifndef PRODUCT
81   static void print(const jvmtiCapabilities* caps);
82 #endif
83 };
84 
85 #endif // SHARE_PRIMS_JVMTIMANAGECAPABILITIES_HPP
86