1 | #ifndef __WINDOW_MANAGER_HPP__ |
---|
2 | #define __WINDOW_MANAGER_HPP__ |
---|
3 | |
---|
4 | #include <map> |
---|
5 | #include "mpi.hpp" |
---|
6 | #include "buffer_in.hpp" |
---|
7 | #include "buffer_out.hpp" |
---|
8 | #include "message.hpp" |
---|
9 | |
---|
10 | namespace xios |
---|
11 | { |
---|
12 | |
---|
13 | |
---|
14 | class CWindowManager |
---|
15 | { |
---|
16 | |
---|
17 | private : |
---|
18 | const MPI_Aint OFFSET_LOCK=0 ; |
---|
19 | const int SIZE_LOCK=sizeof(int) ; |
---|
20 | const MPI_Aint OFFSET_BUFFER_SIZE=OFFSET_LOCK+SIZE_LOCK ; |
---|
21 | const int SIZE_BUFFER_SIZE=sizeof(size_t) ; |
---|
22 | const MPI_Aint OFFSET_BUFFER=OFFSET_BUFFER_SIZE+SIZE_BUFFER_SIZE ; |
---|
23 | const int WINDOWS_LOCKED=-1 ; |
---|
24 | |
---|
25 | MPI_Win window_ ; |
---|
26 | void * winBuffer_ ; |
---|
27 | |
---|
28 | public : |
---|
29 | |
---|
30 | CWindowManager(MPI_Comm winComm, size_t bufferSize) |
---|
31 | { |
---|
32 | const MPI_Aint windowSize=bufferSize+OFFSET_BUFFER ; |
---|
33 | MPI_Win_allocate(windowSize, 1, MPI_INFO_NULL, winComm, &winBuffer_, &window_) ; |
---|
34 | int lock=0 ; |
---|
35 | size_t size=0 ; |
---|
36 | int commRank ; |
---|
37 | MPI_Comm_rank(winComm, &commRank) ; |
---|
38 | MPI_Win_lock(MPI_LOCK_EXCLUSIVE, commRank, 0, window_) ; |
---|
39 | MPI_Put(&lock, SIZE_LOCK, MPI_CHAR, commRank, OFFSET_LOCK, SIZE_LOCK, MPI_CHAR, window_) ; |
---|
40 | MPI_Put(&size, SIZE_BUFFER_SIZE, MPI_CHAR, commRank, OFFSET_BUFFER_SIZE, SIZE_BUFFER_SIZE, MPI_CHAR, window_) ; |
---|
41 | MPI_Win_unlock(commRank, window_) ; |
---|
42 | MPI_Barrier(winComm) ; |
---|
43 | } |
---|
44 | |
---|
45 | void lockWindow(int rank, int state ) |
---|
46 | { |
---|
47 | int lock=state ; |
---|
48 | |
---|
49 | do |
---|
50 | { |
---|
51 | MPI_Win_lock(MPI_LOCK_EXCLUSIVE, rank, 0, window_) ; |
---|
52 | MPI_Compare_and_swap(&WINDOWS_LOCKED, &state, &lock, MPI_INT, rank, OFFSET_LOCK, window_) ; |
---|
53 | MPI_Win_unlock(rank, window_) ; |
---|
54 | } while (lock!=state) ; |
---|
55 | |
---|
56 | |
---|
57 | } |
---|
58 | |
---|
59 | |
---|
60 | void unlockWindow(int rank, int state ) |
---|
61 | { |
---|
62 | int lock ; |
---|
63 | MPI_Win_lock(MPI_LOCK_EXCLUSIVE, rank, 0, window_) ; |
---|
64 | MPI_Compare_and_swap(&state, &WINDOWS_LOCKED, &lock, MPI_INT, rank, OFFSET_LOCK, window_) ; |
---|
65 | MPI_Win_unlock(rank, window_) ; |
---|
66 | } |
---|
67 | |
---|
68 | template< class T > |
---|
69 | void updateToWindow(int rank, T* object, void (T::*dumpOut)(CBufferOut&) ) |
---|
70 | { |
---|
71 | CBufferOut buffer ; |
---|
72 | (object->*dumpOut)(buffer) ; |
---|
73 | size_t size=buffer.count() ; |
---|
74 | MPI_Win_lock(MPI_LOCK_EXCLUSIVE, rank, 0, window_) ; |
---|
75 | MPI_Put(&size, SIZE_BUFFER_SIZE, MPI_CHAR, rank, OFFSET_BUFFER_SIZE, SIZE_BUFFER_SIZE, MPI_CHAR, window_) ; |
---|
76 | MPI_Put(buffer.start(), size, MPI_CHAR, rank,OFFSET_BUFFER, size, MPI_CHAR, window_) ; |
---|
77 | MPI_Win_unlock(rank, window_) ; |
---|
78 | } |
---|
79 | |
---|
80 | template< typename T > |
---|
81 | void updateFromWindow(int rank, T* object, void (T::*dumpIn)(CBufferIn&) ) |
---|
82 | { |
---|
83 | size_t size ; |
---|
84 | MPI_Win_lock(MPI_LOCK_EXCLUSIVE, rank, 0, window_) ; |
---|
85 | MPI_Get(&size, SIZE_BUFFER_SIZE, MPI_CHAR, rank, OFFSET_BUFFER_SIZE, SIZE_BUFFER_SIZE, MPI_CHAR, window_) ; |
---|
86 | MPI_Win_flush(rank,window_) ; |
---|
87 | CBufferIn buffer(size) ; |
---|
88 | MPI_Get(buffer.start(), size, MPI_CHAR, rank,OFFSET_BUFFER, size, MPI_CHAR, window_) ; |
---|
89 | MPI_Win_unlock(rank, window_) ; |
---|
90 | (object->*dumpIn)(buffer) ; |
---|
91 | } |
---|
92 | |
---|
93 | template< class T > |
---|
94 | void pushToWindow(int rank, T* object, void (T::*dumpOut)(CBufferOut&) ) |
---|
95 | { |
---|
96 | size_t size ; |
---|
97 | MPI_Win_lock(MPI_LOCK_EXCLUSIVE, rank, 0, window_) ; |
---|
98 | MPI_Get(&size, SIZE_BUFFER_SIZE, MPI_CHAR, rank, OFFSET_BUFFER_SIZE, SIZE_BUFFER_SIZE, MPI_CHAR, window_) ; |
---|
99 | MPI_Win_flush(rank,window_) ; |
---|
100 | CBufferOut buffer ; |
---|
101 | (object->*dumpOut)(buffer) ; |
---|
102 | size_t bufferSize=buffer.count() ; |
---|
103 | size_t newSize = size + bufferSize; |
---|
104 | MPI_Put(&newSize, SIZE_BUFFER_SIZE, MPI_CHAR, rank, OFFSET_BUFFER_SIZE, SIZE_BUFFER_SIZE, MPI_CHAR, window_) ; |
---|
105 | MPI_Put(buffer.start(), bufferSize, MPI_CHAR, rank, OFFSET_BUFFER+size, bufferSize, MPI_CHAR, window_) ; |
---|
106 | MPI_Win_unlock(rank, window_) ; |
---|
107 | } |
---|
108 | |
---|
109 | template< typename T > |
---|
110 | void popFromWindow(int rank, T* object, void (T::*dumpIn)(CBufferIn&) ) |
---|
111 | { |
---|
112 | size_t size ; |
---|
113 | MPI_Win_lock(MPI_LOCK_EXCLUSIVE, rank, 0, window_) ; |
---|
114 | MPI_Get(&size, SIZE_BUFFER_SIZE, MPI_CHAR, rank, OFFSET_BUFFER_SIZE, SIZE_BUFFER_SIZE, MPI_CHAR, window_) ; |
---|
115 | MPI_Win_flush(rank,window_) ; |
---|
116 | CBufferIn buffer(size) ; |
---|
117 | MPI_Get(buffer.start(), size, MPI_CHAR, rank,OFFSET_BUFFER, size, MPI_CHAR, window_) ; |
---|
118 | MPI_Win_flush(rank,window_) ; |
---|
119 | (object->*dumpIn)(buffer) ; |
---|
120 | |
---|
121 | size=buffer.remain() ; |
---|
122 | MPI_Put(&size, SIZE_BUFFER_SIZE, MPI_CHAR, rank, OFFSET_BUFFER_SIZE, SIZE_BUFFER_SIZE, MPI_CHAR, window_) ; |
---|
123 | MPI_Put(buffer.ptr(),buffer.remain(), MPI_CHAR, rank, OFFSET_BUFFER, buffer.remain(), MPI_CHAR, window_) ; |
---|
124 | MPI_Win_unlock(rank, window_) ; |
---|
125 | |
---|
126 | } |
---|
127 | |
---|
128 | ~CWindowManager() |
---|
129 | { |
---|
130 | MPI_Win_free(&window_) ; |
---|
131 | } |
---|
132 | } ; |
---|
133 | } |
---|
134 | |
---|
135 | |
---|
136 | |
---|
137 | #endif |
---|