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d810d0de | 1 | // $Id$ |
2 | // Main authors: Matevz Tadel & Alja Mrak-Tadel: 2006, 2007 | |
3 | ||
4 | /************************************************************************** | |
5 | * Copyright(c) 1998-2008, ALICE Experiment at CERN, all rights reserved. * | |
6 | * See http://aliceinfo.cern.ch/Offline/AliRoot/License.html for * | |
7 | * full copyright notice. * | |
8 | **************************************************************************/ | |
87f60d9e | 9 | #include <TObject.h> |
10 | #include <TList.h> | |
11 | #include <TTimer.h> | |
12 | #include <TROOT.h> | |
13 | ||
14 | #include <TThread.h> | |
15 | #include <TMutex.h> | |
16 | #include <TCondition.h> | |
17 | ||
18 | class CommandQueue : public TObject | |
19 | { | |
20 | public: | |
21 | class Command : public TObject | |
22 | { | |
23 | public: | |
24 | TString fCommand; | |
25 | TCondition *fAwakeCond; // awake thread after command executed | |
26 | ||
27 | Command(const TString& cmd, TCondition* cond) : fCommand(cmd), fAwakeCond(cond) {} | |
28 | ||
29 | ClassDef(Command, 0); // An entry in the command-queue. | |
30 | }; | |
31 | ||
32 | TList fQueue; | |
33 | TMutex fQueueLock; | |
34 | TTimer fQueueTimer; | |
35 | Bool_t fQueueTimerSet; | |
36 | ||
37 | CommandQueue() | |
38 | { | |
39 | fQueueTimer.Connect("Timeout()", "CommandQueue", this, "ProcessQueue()"); | |
40 | fQueueTimerSet = kFALSE; | |
41 | } | |
42 | ||
43 | // Destructor, cleanup missing. | |
44 | ||
45 | //-------------------------------- | |
46 | ||
47 | void RegisterCommand(const TString& cmd, TCondition* cond=0) | |
48 | { | |
49 | fQueueLock.Lock(); | |
50 | fQueue.Add(new Command(cmd, cond)); | |
51 | if (!fQueueTimerSet) { | |
52 | // Force execution in main thread when it is free. | |
53 | fQueueTimer.Start(0, kTRUE); | |
54 | fQueueTimerSet = kTRUE; | |
55 | } | |
56 | fQueueLock.UnLock(); | |
57 | } | |
58 | ||
59 | virtual void ProcessQueue() | |
60 | { | |
61 | Int_t n_proccessed = 0; | |
62 | ||
63 | while (1) { | |
64 | fQueueLock.Lock(); | |
65 | Command* c = (Command*) fQueue.First(); | |
66 | fQueue.RemoveFirst(); | |
67 | fQueueLock.UnLock(); | |
68 | ||
69 | { // Put this into virtual void ProcessComand(Command*); | |
70 | // Need also exception handling. | |
71 | gROOT->ProcessLineFast(c->fCommand); | |
72 | ++n_proccessed; | |
73 | if (c->fAwakeCond != 0) { | |
74 | c->fAwakeCond->GetMutex()->Lock(); | |
75 | c->fAwakeCond->Signal(); | |
76 | c->fAwakeCond->GetMutex()->UnLock(); | |
77 | } | |
78 | } | |
79 | delete c; | |
80 | ||
81 | fQueueLock.Lock(); | |
82 | if (fQueue.IsEmpty()) { | |
83 | fQueueTimerSet = kFALSE; | |
84 | fQueueLock.UnLock(); | |
85 | break; | |
86 | } | |
87 | fQueueLock.UnLock(); | |
88 | } | |
89 | ||
90 | printf("CommandQueue::ProcessQueue() processed %d commands.\n", n_proccessed); | |
91 | } | |
92 | ||
93 | ClassDef(CommandQueue,0); // Command queue for exection in global CINT context. | |
94 | }; | |
95 | ||
96 | //============================================================================= | |
97 | // Global variable | |
98 | //============================================================================= | |
99 | ||
100 | CommandQueue* g_cmd_queue = 0; | |
101 | ||
102 | void command_queue() | |
103 | { | |
104 | g_cmd_queue = new CommandQueue; | |
105 | printf("Starting command-queue ...\n"); | |
106 | } | |
107 | ||
108 | // ============================================================================ | |
84aff7a4 | 109 | // TEveUtil side |
87f60d9e | 110 | // ============================================================================ |
111 | ||
84aff7a4 | 112 | #include <TEve.h> |
113 | #include <TEveManager.h> | |
114 | #include <TEvePointSet.h> | |
87f60d9e | 115 | |
116 | #include <TRandom.h> | |
117 | ||
118 | void make_crap(void* arg) | |
119 | { | |
120 | Int_t num = 1024; | |
121 | TRandom rnd(0); | |
122 | ||
84aff7a4 | 123 | TEvePointSet* ps = new TEvePointSet("Testus", num); |
87f60d9e | 124 | for (Int_t i=0; i<num; ++i) { |
125 | ps->SetNextPoint(rnd.Uniform(-100, 100), | |
126 | rnd.Uniform(-100, 100), | |
127 | rnd.Uniform(-100, 100)); | |
128 | } | |
129 | ps->SetMainColor((Color_t)kRed); | |
84aff7a4 | 130 | printf("make_crap() -> produced TEvePointSet* %p)\n", ps); |
87f60d9e | 131 | |
132 | ((CommandQueue*)arg)->RegisterCommand | |
84aff7a4 | 133 | (Form("register_crap((TEveElement*)0x%lx)", ps)); |
87f60d9e | 134 | } |
135 | ||
84aff7a4 | 136 | void register_crap(TEveElement* el) |
87f60d9e | 137 | { |
84aff7a4 | 138 | printf("register_crap(TEveElement* %p)\n", el); |
139 | gEve->AddElement(el); | |
140 | gEve->Redraw3D(); | |
87f60d9e | 141 | } |
142 | ||
143 | void test() | |
144 | { | |
145 | TThread* thr = new TThread(make_crap, g_cmd_queue); | |
146 | thr->Run(); | |
147 | } |