Mercurial > projects > ddmd
annotate dmd/SynchronizedStatement.d @ 122:c77e9f4f1793
Statements -> Vector
| author | Eldar Insafutdinov <e.insafutdinov@gmail.com> |
|---|---|
| date | Thu, 02 Sep 2010 23:37:49 +0100 |
| parents | e28b18c23469 |
| children | e3afd1303184 |
| 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 | |
| 40 class SynchronizedStatement : Statement | |
| 41 { | |
| 42 Expression exp; | |
| 43 Statement body_; | |
| 44 | |
| 45 this(Loc loc, Expression exp, Statement body_) | |
| 46 { | |
| 47 super(loc); | |
| 48 | |
| 49 this.exp = exp; | |
| 50 this.body_ = body_; | |
| 51 this.esync = null; | |
| 52 } | |
| 53 | |
| 72 | 54 override Statement syntaxCopy() |
| 0 | 55 { |
| 56 assert(false); | |
| 57 } | |
| 58 | |
| 72 | 59 override Statement semantic(Scope sc) |
| 0 | 60 { |
| 61 if (exp) | |
| 62 { | |
| 63 exp = exp.semantic(sc); | |
| 64 exp = resolveProperties(sc, exp); | |
| 65 ClassDeclaration cd = exp.type.isClassHandle(); | |
| 66 if (!cd) | |
| 67 error("can only synchronize on class objects, not '%s'", exp.type.toChars()); | |
| 68 else if (cd.isInterfaceDeclaration()) | |
| 69 { | |
| 70 /* Cast the interface to an object, as the object has the monitor, | |
| 71 * not the interface. | |
| 72 */ | |
| 73 Type t = new TypeIdentifier(Loc(0), Id.Object_); | |
| 74 | |
| 75 t = t.semantic(Loc(0), sc); | |
| 76 exp = new CastExp(loc, exp, t); | |
| 77 exp = exp.semantic(sc); | |
| 78 } | |
| 79 | |
| 80 static if (true) { | |
| 81 /* Rewrite as: | |
| 82 * auto tmp = exp; | |
| 83 * _d_monitorenter(tmp); | |
| 84 * try { body } finally { _d_monitorexit(tmp); } | |
| 85 */ | |
| 86 Identifier id = Lexer.uniqueId("__sync"); | |
| 87 ExpInitializer ie = new ExpInitializer(loc, exp); | |
| 88 VarDeclaration tmp = new VarDeclaration(loc, exp.type, id, ie); | |
| 89 | |
| 90 Statements cs = new Statements(); | |
|
122
c77e9f4f1793
Statements -> Vector
Eldar Insafutdinov <e.insafutdinov@gmail.com>
parents:
114
diff
changeset
|
91 cs.push(new DeclarationStatement(loc, new DeclarationExp(loc, tmp))); |
| 0 | 92 |
| 93 FuncDeclaration fdenter = FuncDeclaration.genCfunc(Type.tvoid, Id.monitorenter); | |
| 94 Expression e = new CallExp(loc, new VarExp(loc, fdenter), new VarExp(loc, tmp)); | |
| 95 e.type = Type.tvoid; // do not run semantic on e | |
|
122
c77e9f4f1793
Statements -> Vector
Eldar Insafutdinov <e.insafutdinov@gmail.com>
parents:
114
diff
changeset
|
96 cs.push(new ExpStatement(loc, e)); |
| 0 | 97 |
| 98 FuncDeclaration fdexit = FuncDeclaration.genCfunc(Type.tvoid, Id.monitorexit); | |
| 99 e = new CallExp(loc, new VarExp(loc, fdexit), new VarExp(loc, tmp)); | |
| 100 e.type = Type.tvoid; // do not run semantic on e | |
| 101 Statement s = new ExpStatement(loc, e); | |
| 102 s = new TryFinallyStatement(loc, body_, s); | |
|
122
c77e9f4f1793
Statements -> Vector
Eldar Insafutdinov <e.insafutdinov@gmail.com>
parents:
114
diff
changeset
|
103 cs.push(s); |
| 0 | 104 |
| 105 s = new CompoundStatement(loc, cs); | |
| 106 return s.semantic(sc); | |
| 107 } | |
| 108 } | |
| 109 /// static if (true) { | |
| 110 else | |
| 111 { | |
| 112 /* Generate our own critical section, then rewrite as: | |
| 113 * __gshared byte[CriticalSection.sizeof] critsec; | |
| 114 * _d_criticalenter(critsec.ptr); | |
| 115 * try { body } finally { _d_criticalexit(critsec.ptr); } | |
| 116 */ | |
| 117 Identifier id = Lexer.uniqueId("__critsec"); | |
| 118 Type t = new TypeSArray(Type.tint8, new IntegerExp(PTRSIZE + os_critsecsize())); | |
| 119 VarDeclaration tmp = new VarDeclaration(loc, t, id, null); | |
| 120 tmp.storage_class |= STCgshared | STCstatic; | |
| 121 | |
| 122 Statements cs = new Statements(); | |
|
122
c77e9f4f1793
Statements -> Vector
Eldar Insafutdinov <e.insafutdinov@gmail.com>
parents:
114
diff
changeset
|
123 cs.push(new DeclarationStatement(loc, new DeclarationExp(loc, tmp))); |
| 0 | 124 |
| 125 FuncDeclaration fdenter = FuncDeclaration.genCfunc(Type.tvoid, Id.criticalenter); | |
| 126 Expression e = new DotIdExp(loc, new VarExp(loc, tmp), Id.ptr); | |
| 127 e = e.semantic(sc); | |
| 128 e = new CallExp(loc, new VarExp(loc, fdenter), e); | |
| 129 e.type = Type.tvoid; // do not run semantic on e | |
|
122
c77e9f4f1793
Statements -> Vector
Eldar Insafutdinov <e.insafutdinov@gmail.com>
parents:
114
diff
changeset
|
130 cs.push(new ExpStatement(loc, e)); |
| 0 | 131 |
| 132 FuncDeclaration fdexit = FuncDeclaration.genCfunc(Type.tvoid, Id.criticalexit); | |
| 133 e = new DotIdExp(loc, new VarExp(loc, tmp), Id.ptr); | |
| 134 e = e.semantic(sc); | |
| 135 e = new CallExp(loc, new VarExp(loc, fdexit), e); | |
| 136 e.type = Type.tvoid; // do not run semantic on e | |
| 137 Statement s = new ExpStatement(loc, e); | |
| 138 s = new TryFinallyStatement(loc, body_, s); | |
|
122
c77e9f4f1793
Statements -> Vector
Eldar Insafutdinov <e.insafutdinov@gmail.com>
parents:
114
diff
changeset
|
139 cs.push(s); |
| 0 | 140 |
| 141 s = new CompoundStatement(loc, cs); | |
| 142 return s.semantic(sc); | |
| 143 } | |
| 144 /// } | |
| 145 if (body_) | |
| 146 body_ = body_.semantic(sc); | |
| 147 | |
| 148 return this; | |
| 149 } | |
| 150 | |
| 72 | 151 override bool hasBreak() |
| 0 | 152 { |
| 153 assert(false); | |
| 154 } | |
| 155 | |
| 72 | 156 override bool hasContinue() |
| 0 | 157 { |
| 158 assert(false); | |
| 159 } | |
| 160 | |
| 72 | 161 override bool usesEH() |
| 0 | 162 { |
| 163 assert(false); | |
| 164 } | |
| 165 | |
| 72 | 166 override BE blockExit() |
| 0 | 167 { |
| 168 assert(false); | |
| 169 } | |
| 170 | |
| 72 | 171 override void toCBuffer(OutBuffer buf, HdrGenState* hgs) |
| 0 | 172 { |
| 173 assert(false); | |
| 174 } | |
| 175 | |
| 72 | 176 override Statement inlineScan(InlineScanState* iss) |
| 0 | 177 { |
| 178 assert(false); | |
| 179 } | |
| 180 | |
| 181 // Back end | |
| 182 elem* esync; | |
| 183 | |
| 184 this(Loc loc, elem *esync, Statement body_) | |
| 185 { | |
| 186 assert(false); | |
| 187 super(loc); | |
| 188 } | |
| 189 | |
| 72 | 190 override void toIR(IRState* irs) |
| 0 | 191 { |
| 192 assert(false); | |
| 193 } | |
| 72 | 194 } |