28 #include "memory/allocation.hpp" |
28 #include "memory/allocation.hpp" |
29 |
29 |
30 class Atomic : AllStatic { |
30 class Atomic : AllStatic { |
31 public: |
31 public: |
32 // Atomically store to a location |
32 // Atomically store to a location |
33 static void store (jbyte store_value, jbyte* dest); |
33 inline static void store (jbyte store_value, jbyte* dest); |
34 static void store (jshort store_value, jshort* dest); |
34 inline static void store (jshort store_value, jshort* dest); |
35 static void store (jint store_value, jint* dest); |
35 inline static void store (jint store_value, jint* dest); |
36 static void store (jlong store_value, jlong* dest); |
36 inline static void store (jlong store_value, jlong* dest); |
37 static void store_ptr(intptr_t store_value, intptr_t* dest); |
37 inline static void store_ptr(intptr_t store_value, intptr_t* dest); |
38 static void store_ptr(void* store_value, void* dest); |
38 inline static void store_ptr(void* store_value, void* dest); |
39 |
39 |
40 static void store (jbyte store_value, volatile jbyte* dest); |
40 inline static void store (jbyte store_value, volatile jbyte* dest); |
41 static void store (jshort store_value, volatile jshort* dest); |
41 inline static void store (jshort store_value, volatile jshort* dest); |
42 static void store (jint store_value, volatile jint* dest); |
42 inline static void store (jint store_value, volatile jint* dest); |
43 static void store (jlong store_value, volatile jlong* dest); |
43 inline static void store (jlong store_value, volatile jlong* dest); |
44 static void store_ptr(intptr_t store_value, volatile intptr_t* dest); |
44 inline static void store_ptr(intptr_t store_value, volatile intptr_t* dest); |
45 static void store_ptr(void* store_value, volatile void* dest); |
45 inline static void store_ptr(void* store_value, volatile void* dest); |
46 |
46 |
47 static jlong load(volatile jlong* src); |
47 inline static jlong load(volatile jlong* src); |
48 |
48 |
49 // Atomically add to a location, return updated value |
49 // Atomically add to a location, return updated value |
50 static jint add (jint add_value, volatile jint* dest); |
50 inline static jint add (jint add_value, volatile jint* dest); |
51 static intptr_t add_ptr(intptr_t add_value, volatile intptr_t* dest); |
51 inline static intptr_t add_ptr(intptr_t add_value, volatile intptr_t* dest); |
52 static void* add_ptr(intptr_t add_value, volatile void* dest); |
52 inline static void* add_ptr(intptr_t add_value, volatile void* dest); |
53 |
53 |
54 static jlong add (jlong add_value, volatile jlong* dest); |
54 static jlong add (jlong add_value, volatile jlong* dest); |
55 |
55 |
56 // Atomically increment location |
56 // Atomically increment location |
57 static void inc (volatile jint* dest); |
57 inline static void inc (volatile jint* dest); |
58 static void inc_ptr(volatile intptr_t* dest); |
58 inline static void inc_ptr(volatile intptr_t* dest); |
59 static void inc_ptr(volatile void* dest); |
59 inline static void inc_ptr(volatile void* dest); |
60 |
60 |
61 // Atomically decrement a location |
61 // Atomically decrement a location |
62 static void dec (volatile jint* dest); |
62 inline static void dec (volatile jint* dest); |
63 static void dec_ptr(volatile intptr_t* dest); |
63 inline static void dec_ptr(volatile intptr_t* dest); |
64 static void dec_ptr(volatile void* dest); |
64 inline static void dec_ptr(volatile void* dest); |
65 |
65 |
66 // Performs atomic exchange of *dest with exchange_value. Returns old prior value of *dest. |
66 // Performs atomic exchange of *dest with exchange_value. Returns old prior value of *dest. |
67 static jint xchg(jint exchange_value, volatile jint* dest); |
67 inline static jint xchg(jint exchange_value, volatile jint* dest); |
68 static unsigned int xchg(unsigned int exchange_value, |
68 static unsigned int xchg(unsigned int exchange_value, volatile unsigned int* dest); |
69 volatile unsigned int* dest); |
|
70 |
69 |
71 static intptr_t xchg_ptr(intptr_t exchange_value, volatile intptr_t* dest); |
70 inline static intptr_t xchg_ptr(intptr_t exchange_value, volatile intptr_t* dest); |
72 static void* xchg_ptr(void* exchange_value, volatile void* dest); |
71 inline static void* xchg_ptr(void* exchange_value, volatile void* dest); |
73 |
72 |
74 // Performs atomic compare of *dest and compare_value, and exchanges *dest with exchange_value |
73 // Performs atomic compare of *dest and compare_value, and exchanges *dest with exchange_value |
75 // if the comparison succeeded. Returns prior value of *dest. Guarantees a two-way memory |
74 // if the comparison succeeded. Returns prior value of *dest. Guarantees a two-way memory |
76 // barrier across the cmpxchg. I.e., it's really a 'fence_cmpxchg_acquire'. |
75 // barrier across the cmpxchg. I.e., it's really a 'fence_cmpxchg_acquire'. |
77 static jbyte cmpxchg (jbyte exchange_value, volatile jbyte* dest, jbyte compare_value); |
76 static jbyte cmpxchg (jbyte exchange_value, volatile jbyte* dest, jbyte compare_value); |
78 static jint cmpxchg (jint exchange_value, volatile jint* dest, jint compare_value); |
77 inline static jint cmpxchg (jint exchange_value, volatile jint* dest, jint compare_value); |
79 static jlong cmpxchg (jlong exchange_value, volatile jlong* dest, jlong compare_value); |
78 inline static jlong cmpxchg (jlong exchange_value, volatile jlong* dest, jlong compare_value); |
80 |
79 |
81 static unsigned int cmpxchg(unsigned int exchange_value, |
80 static unsigned int cmpxchg(unsigned int exchange_value, |
82 volatile unsigned int* dest, |
81 volatile unsigned int* dest, |
83 unsigned int compare_value); |
82 unsigned int compare_value); |
84 |
83 |
85 static intptr_t cmpxchg_ptr(intptr_t exchange_value, volatile intptr_t* dest, intptr_t compare_value); |
84 inline static intptr_t cmpxchg_ptr(intptr_t exchange_value, volatile intptr_t* dest, intptr_t compare_value); |
86 static void* cmpxchg_ptr(void* exchange_value, volatile void* dest, void* compare_value); |
85 inline static void* cmpxchg_ptr(void* exchange_value, volatile void* dest, void* compare_value); |
87 }; |
86 }; |
88 |
87 |
89 #endif // SHARE_VM_RUNTIME_ATOMIC_HPP |
88 #endif // SHARE_VM_RUNTIME_ATOMIC_HPP |