| Geant4 Cross Reference |
1 //
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24 // ********************************************************************
25 //
26 // G4PDefManager class implementation
27 //
28 // Author: Xin Dong, 25.01.2009 - First implementation
29 // from automatic MT conversion.
30 // --------------------------------------------------------------------
31
32 #include "G4PDefManager.hh"
33
34 #include "G4AutoLock.hh"
35 #include "globals.hh"
36
37 #include "pwdefs.hh"
38
39 #include <cstdlib>
40
41 void G4PDefData::initialize()
42 {
43 theProcessManager = nullptr;
44 theTrackingManager = nullptr;
45 }
46
47 G4int& G4PDefManager::slavetotalspace()
48 {
49 G4ThreadLocalStatic G4int _instance = 0;
50 return _instance;
51 }
52
53 G4PDefData*& G4PDefManager::offset()
54 {
55 G4ThreadLocalStatic G4PDefData* _instance = nullptr;
56 return _instance;
57 }
58
59 G4PDefManager::G4PDefManager()
60 {
61 G4MUTEXINIT(mutex);
62 }
63
64 G4int G4PDefManager::CreateSubInstance()
65 // Invoked by the master or work thread to create a new subinstance
66 // whenever a new split class instance is created. For each worker
67 // thread, ions are created dynamically.
68 {
69 G4AutoLock l(&mutex);
70 ++totalobj;
71 if (totalobj > slavetotalspace()) {
72 l.unlock();
73 NewSubInstances();
74 l.lock();
75 }
76 return (totalobj - 1);
77 }
78
79 void G4PDefManager::NewSubInstances()
80 // Invoked by each worker thread to grow the subinstance array and
81 // initialize each new subinstance using a particular method defined
82 // by the subclass.
83 {
84 G4AutoLock l(&mutex);
85 if (slavetotalspace() >= totalobj) {
86 return;
87 }
88 G4int originaltotalspace = slavetotalspace();
89 slavetotalspace() = totalobj + 512;
90 offset() = (G4PDefData*)realloc(offset(), slavetotalspace() * sizeof(G4PDefData));
91 if (offset() == nullptr) {
92 G4Exception("G4PDefManager::NewSubInstances()", "OutOfMemory", FatalException,
93 "Cannot malloc space!");
94 }
95
96 for (G4int i = originaltotalspace; i < slavetotalspace(); ++i) {
97 offset()[i].initialize();
98 }
99 }
100
101 // Invoked by all threads to free the subinstance array.
102 void G4PDefManager::FreeSlave()
103 {
104 if (offset() == nullptr) {
105 return;
106 }
107 free(offset());
108 offset() = nullptr;
109 }
110
111 G4PDefData* G4PDefManager::GetOffset()
112 {
113 return offset();
114 }
115
116 // Use recycled work area, which was created previously.
117 void G4PDefManager::UseWorkArea(G4PDefData* newOffset)
118 {
119 if ((offset() != nullptr) && (offset() != newOffset)) {
120 G4Exception("G4PDefManager::UseWorkspace()", "InvalidCondition", FatalException,
121 "Thread already has workspace - cannot use another.");
122 }
123 offset() = newOffset;
124 }
125
126 // Detach this thread from this Location
127 // The object which calls this method is responsible for it.
128 G4PDefData* G4PDefManager::FreeWorkArea()
129 {
130 G4PDefData* offsetRet = offset();
131 offset() = nullptr;
132 return offsetRet;
133 }
134