Mercurial > projects > ddmd
annotate dmd/SynchronizedStatement.d @ 187:b0d41ff5e0df
Added expandability scheme outlined in http://www.dsource.org/forums/viewtopic.php?t=5659&sid=6f2150ff5b0bffcd47512a6a7608d218
| author | Abscissa |
|---|---|
| date | Tue, 07 Jun 2011 23:37:34 -0400 |
| parents | e3afd1303184 |
| children |
| rev | line source |
|---|---|
| 0 | 1 module dmd.SynchronizedStatement; |
| 2 | |
| 114 | 3 import dmd.common; |
| 0 | 4 import dmd.Statement; |
| 5 import dmd.IntegerExp; | |
| 6 import dmd.TypeSArray; | |
| 7 import dmd.CompoundStatement; | |
| 8 import dmd.Loc; | |
| 9 import dmd.Scope; | |
| 10 import dmd.Expression; | |
| 11 import dmd.ClassDeclaration; | |
| 12 import dmd.Id; | |
| 13 import dmd.TypeIdentifier; | |
| 14 import dmd.Type; | |
| 15 import dmd.OutBuffer; | |
| 16 import dmd.HdrGenState; | |
| 17 import dmd.InlineScanState; | |
| 18 import dmd.IRState; | |
| 19 import dmd.CastExp; | |
| 20 import dmd.TryFinallyStatement; | |
| 21 import dmd.ExpStatement; | |
| 22 import dmd.CallExp; | |
| 23 import dmd.DeclarationExp; | |
| 24 import dmd.VarExp; | |
| 25 import dmd.DeclarationStatement; | |
| 26 import dmd.ArrayTypes; | |
| 27 import dmd.Statement; | |
| 28 import dmd.VarDeclaration; | |
| 29 import dmd.ExpInitializer; | |
| 30 import dmd.Lexer; | |
| 31 import dmd.Identifier; | |
| 32 import dmd.FuncDeclaration; | |
| 33 import dmd.BE; | |
| 34 import dmd.STC; | |
| 35 import dmd.DotIdExp; | |
| 36 | |
| 37 import dmd.backend.elem; | |
| 38 import dmd.backend.Util; | |
| 39 | |
|
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b0d41ff5e0df
Added expandability scheme outlined in http://www.dsource.org/forums/viewtopic.php?t=5659&sid=6f2150ff5b0bffcd47512a6a7608d218
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40 import dmd.DDMDExtensions; |
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Added expandability scheme outlined in http://www.dsource.org/forums/viewtopic.php?t=5659&sid=6f2150ff5b0bffcd47512a6a7608d218
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41 |
| 0 | 42 class SynchronizedStatement : Statement |
| 43 { | |
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Added expandability scheme outlined in http://www.dsource.org/forums/viewtopic.php?t=5659&sid=6f2150ff5b0bffcd47512a6a7608d218
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44 mixin insertMemberExtension!(typeof(this)); |
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Added expandability scheme outlined in http://www.dsource.org/forums/viewtopic.php?t=5659&sid=6f2150ff5b0bffcd47512a6a7608d218
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45 |
| 0 | 46 Expression exp; |
| 47 Statement body_; | |
| 48 | |
| 49 this(Loc loc, Expression exp, Statement body_) | |
| 50 { | |
| 178 | 51 register(); |
| 0 | 52 super(loc); |
| 53 | |
| 54 this.exp = exp; | |
| 55 this.body_ = body_; | |
| 56 this.esync = null; | |
| 57 } | |
| 58 | |
| 72 | 59 override Statement syntaxCopy() |
| 0 | 60 { |
| 61 assert(false); | |
| 62 } | |
| 63 | |
| 72 | 64 override Statement semantic(Scope sc) |
| 0 | 65 { |
| 66 if (exp) | |
| 67 { | |
| 68 exp = exp.semantic(sc); | |
| 69 exp = resolveProperties(sc, exp); | |
| 70 ClassDeclaration cd = exp.type.isClassHandle(); | |
| 71 if (!cd) | |
| 72 error("can only synchronize on class objects, not '%s'", exp.type.toChars()); | |
| 73 else if (cd.isInterfaceDeclaration()) | |
| 74 { | |
| 75 /* Cast the interface to an object, as the object has the monitor, | |
| 76 * not the interface. | |
| 77 */ | |
| 78 Type t = new TypeIdentifier(Loc(0), Id.Object_); | |
| 79 | |
| 80 t = t.semantic(Loc(0), sc); | |
| 81 exp = new CastExp(loc, exp, t); | |
| 82 exp = exp.semantic(sc); | |
| 83 } | |
| 84 | |
| 85 static if (true) { | |
| 86 /* Rewrite as: | |
| 87 * auto tmp = exp; | |
| 88 * _d_monitorenter(tmp); | |
| 89 * try { body } finally { _d_monitorexit(tmp); } | |
| 90 */ | |
| 91 Identifier id = Lexer.uniqueId("__sync"); | |
| 92 ExpInitializer ie = new ExpInitializer(loc, exp); | |
| 93 VarDeclaration tmp = new VarDeclaration(loc, exp.type, id, ie); | |
| 94 | |
| 95 Statements cs = new Statements(); | |
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96 cs.push(new DeclarationStatement(loc, new DeclarationExp(loc, tmp))); |
| 0 | 97 |
| 98 FuncDeclaration fdenter = FuncDeclaration.genCfunc(Type.tvoid, Id.monitorenter); | |
| 99 Expression e = new CallExp(loc, new VarExp(loc, fdenter), new VarExp(loc, tmp)); | |
| 100 e.type = Type.tvoid; // do not run semantic on e | |
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101 cs.push(new ExpStatement(loc, e)); |
| 0 | 102 |
| 103 FuncDeclaration fdexit = FuncDeclaration.genCfunc(Type.tvoid, Id.monitorexit); | |
| 104 e = new CallExp(loc, new VarExp(loc, fdexit), new VarExp(loc, tmp)); | |
| 105 e.type = Type.tvoid; // do not run semantic on e | |
| 106 Statement s = new ExpStatement(loc, e); | |
| 107 s = new TryFinallyStatement(loc, body_, s); | |
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108 cs.push(s); |
| 0 | 109 |
| 110 s = new CompoundStatement(loc, cs); | |
| 111 return s.semantic(sc); | |
| 112 } | |
| 113 } | |
| 114 /// static if (true) { | |
| 115 else | |
| 116 { | |
| 117 /* Generate our own critical section, then rewrite as: | |
| 118 * __gshared byte[CriticalSection.sizeof] critsec; | |
| 119 * _d_criticalenter(critsec.ptr); | |
| 120 * try { body } finally { _d_criticalexit(critsec.ptr); } | |
| 121 */ | |
| 122 Identifier id = Lexer.uniqueId("__critsec"); | |
| 123 Type t = new TypeSArray(Type.tint8, new IntegerExp(PTRSIZE + os_critsecsize())); | |
| 124 VarDeclaration tmp = new VarDeclaration(loc, t, id, null); | |
| 125 tmp.storage_class |= STCgshared | STCstatic; | |
| 126 | |
| 127 Statements cs = new Statements(); | |
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128 cs.push(new DeclarationStatement(loc, new DeclarationExp(loc, tmp))); |
| 0 | 129 |
| 130 FuncDeclaration fdenter = FuncDeclaration.genCfunc(Type.tvoid, Id.criticalenter); | |
| 131 Expression e = new DotIdExp(loc, new VarExp(loc, tmp), Id.ptr); | |
| 132 e = e.semantic(sc); | |
| 133 e = new CallExp(loc, new VarExp(loc, fdenter), e); | |
| 134 e.type = Type.tvoid; // do not run semantic on e | |
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135 cs.push(new ExpStatement(loc, e)); |
| 0 | 136 |
| 137 FuncDeclaration fdexit = FuncDeclaration.genCfunc(Type.tvoid, Id.criticalexit); | |
| 138 e = new DotIdExp(loc, new VarExp(loc, tmp), Id.ptr); | |
| 139 e = e.semantic(sc); | |
| 140 e = new CallExp(loc, new VarExp(loc, fdexit), e); | |
| 141 e.type = Type.tvoid; // do not run semantic on e | |
| 142 Statement s = new ExpStatement(loc, e); | |
| 143 s = new TryFinallyStatement(loc, body_, s); | |
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144 cs.push(s); |
| 0 | 145 |
| 146 s = new CompoundStatement(loc, cs); | |
| 147 return s.semantic(sc); | |
| 148 } | |
| 149 /// } | |
| 150 if (body_) | |
| 151 body_ = body_.semantic(sc); | |
| 152 | |
| 153 return this; | |
| 154 } | |
| 155 | |
| 72 | 156 override bool hasBreak() |
| 0 | 157 { |
| 158 assert(false); | |
| 159 } | |
| 160 | |
| 72 | 161 override bool hasContinue() |
| 0 | 162 { |
| 163 assert(false); | |
| 164 } | |
| 165 | |
| 72 | 166 override bool usesEH() |
| 0 | 167 { |
| 168 assert(false); | |
| 169 } | |
| 170 | |
| 72 | 171 override BE blockExit() |
| 0 | 172 { |
| 173 assert(false); | |
| 174 } | |
| 175 | |
| 72 | 176 override void toCBuffer(OutBuffer buf, HdrGenState* hgs) |
| 0 | 177 { |
| 178 assert(false); | |
| 179 } | |
| 180 | |
| 72 | 181 override Statement inlineScan(InlineScanState* iss) |
| 0 | 182 { |
| 183 assert(false); | |
| 184 } | |
| 185 | |
| 186 // Back end | |
| 187 elem* esync; | |
| 188 | |
| 189 this(Loc loc, elem *esync, Statement body_) | |
| 190 { | |
| 178 | 191 register(); |
| 0 | 192 assert(false); |
| 193 super(loc); | |
| 194 } | |
| 195 | |
| 72 | 196 override void toIR(IRState* irs) |
| 0 | 197 { |
| 198 assert(false); | |
| 199 } | |
| 72 | 200 } |