jvmtiManageCapabilities.hpp revision 1472:c18cbe5936b8 
1/*
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24
25#ifndef _JAVA_JVMTI_MANAGE_CAPABILITIES_H_
26#define _JAVA_JVMTI_MANAGE_CAPABILITIES_H_
27
28
29
30class JvmtiManageCapabilities : public AllStatic {
31
32private:
33
34  // these four capabilities sets represent all potentially
35  // available capabilities.  They are disjoint, covering
36  // the four cases: (OnLoad vs OnLoad+live phase) X
37  // (one environment vs any environment).
38  static jvmtiCapabilities always_capabilities;
39  static jvmtiCapabilities onload_capabilities;
40  static jvmtiCapabilities always_solo_capabilities;
41  static jvmtiCapabilities onload_solo_capabilities;
42
43  // solo capabilities that have not been grabbed
44  static jvmtiCapabilities always_solo_remaining_capabilities;
45  static jvmtiCapabilities onload_solo_remaining_capabilities;
46
47  // all capabilities ever acquired
48  static jvmtiCapabilities acquired_capabilities;
49
50  // basic intenal operations
51  static jvmtiCapabilities *either(const jvmtiCapabilities *a, const jvmtiCapabilities *b, jvmtiCapabilities *result);
52  static jvmtiCapabilities *both(const jvmtiCapabilities *a, const jvmtiCapabilities *b, jvmtiCapabilities *result);
53  static jvmtiCapabilities *exclude(const jvmtiCapabilities *a, const jvmtiCapabilities *b, jvmtiCapabilities *result);
54  static bool has_some(const jvmtiCapabilities *a);
55  static void update();
56
57  // init functions
58  static jvmtiCapabilities init_always_capabilities();
59  static jvmtiCapabilities init_onload_capabilities();
60  static jvmtiCapabilities init_always_solo_capabilities();
61  static jvmtiCapabilities init_onload_solo_capabilities();
62
63public:
64  static void initialize();
65
66  // may have to adjust always capabilities when VM initialization has completed
67  static void recompute_always_capabilities();
68
69  // queries and actions
70  static void get_potential_capabilities(const jvmtiCapabilities *current,
71                                         const jvmtiCapabilities *prohibited,
72                                         jvmtiCapabilities *result);
73  static jvmtiError add_capabilities(const jvmtiCapabilities *current,
74                                     const jvmtiCapabilities *prohibited,
75                                     const jvmtiCapabilities *desired,
76                                     jvmtiCapabilities *result);
77  static void relinquish_capabilities(const jvmtiCapabilities *current,
78                                      const jvmtiCapabilities *unwanted,
79                                      jvmtiCapabilities *result);
80  static void copy_capabilities(const jvmtiCapabilities *from, jvmtiCapabilities *to);
81
82#ifndef PRODUCT
83  static void print(const jvmtiCapabilities* caps);
84#endif
85};
86
87#endif   /* _JAVA_JVMTI_MANAGE_CAPABILITIES_H_ */
88