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| 1 | +/* |
| 2 | + * Copyright (c) 2019, Oracle and/or its affiliates. All rights reserved. |
| 3 | + * DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER. |
| 4 | + * |
| 5 | + * The Universal Permissive License (UPL), Version 1.0 |
| 6 | + * |
| 7 | + * Subject to the condition set forth below, permission is hereby granted to any |
| 8 | + * person obtaining a copy of this software, associated documentation and/or |
| 9 | + * data (collectively the "Software"), free of charge and under any and all |
| 10 | + * copyright rights in the Software, and any and all patent rights owned or |
| 11 | + * freely licensable by each licensor hereunder covering either (i) the |
| 12 | + * unmodified Software as contributed to or provided by such licensor, or (ii) |
| 13 | + * the Larger Works (as defined below), to deal in both |
| 14 | + * |
| 15 | + * (a) the Software, and |
| 16 | + * |
| 17 | + * (b) any piece of software and/or hardware listed in the lrgrwrks.txt file if |
| 18 | + * one is included with the Software each a "Larger Work" to which the Software |
| 19 | + * is contributed by such licensors), |
| 20 | + * |
| 21 | + * without restriction, including without limitation the rights to copy, create |
| 22 | + * derivative works of, display, perform, and distribute the Software and make, |
| 23 | + * use, sell, offer for sale, import, export, have made, and have sold the |
| 24 | + * Software and the Larger Work(s), and to sublicense the foregoing rights on |
| 25 | + * either these or other terms. |
| 26 | + * |
| 27 | + * This license is subject to the following condition: |
| 28 | + * |
| 29 | + * The above copyright notice and either this complete permission notice or at a |
| 30 | + * minimum a reference to the UPL must be included in all copies or substantial |
| 31 | + * portions of the Software. |
| 32 | + * |
| 33 | + * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR |
| 34 | + * IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY, |
| 35 | + * FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE |
| 36 | + * AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER |
| 37 | + * LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, |
| 38 | + * OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE |
| 39 | + * SOFTWARE. |
| 40 | + */ |
| 41 | +package com.oracle.graal.python.builtins.objects.cext.common; |
| 42 | + |
| 43 | +import com.oracle.graal.python.builtins.PythonBuiltinClassType; |
| 44 | +import com.oracle.graal.python.nodes.PNodeWithContext; |
| 45 | +import com.oracle.graal.python.nodes.PRaiseNode; |
| 46 | +import com.oracle.truffle.api.dsl.Cached; |
| 47 | +import com.oracle.truffle.api.dsl.GenerateUncached; |
| 48 | +import com.oracle.truffle.api.dsl.Specialization; |
| 49 | +import com.oracle.truffle.api.interop.ArityException; |
| 50 | +import com.oracle.truffle.api.interop.InteropLibrary; |
| 51 | +import com.oracle.truffle.api.interop.UnknownIdentifierException; |
| 52 | +import com.oracle.truffle.api.interop.UnsupportedMessageException; |
| 53 | +import com.oracle.truffle.api.interop.UnsupportedTypeException; |
| 54 | +import com.oracle.truffle.api.library.CachedLibrary; |
| 55 | +import com.oracle.truffle.api.profiles.BranchProfile; |
| 56 | + |
| 57 | +public abstract class CExtCommonNodes { |
| 58 | + |
| 59 | + @GenerateUncached |
| 60 | + public abstract static class ImportCExtSymbolNode extends PNodeWithContext { |
| 61 | + |
| 62 | + public abstract Object execute(CExtContext nativeContext, String name); |
| 63 | + |
| 64 | + // n.b. if 'singleContextAssumption' is valid, we may also cache the native context |
| 65 | + @Specialization(guards = {"nativeContext == cachedNativeContext", "cachedName == name"}, // |
| 66 | + limit = "1", // |
| 67 | + assumptions = "singleContextAssumption()") |
| 68 | + @SuppressWarnings("unused") |
| 69 | + static Object doReceiverCachedIdentity(CExtContext nativeContext, String name, |
| 70 | + @Cached("nativeContext") CExtContext cachedNativeContext, |
| 71 | + @Cached("name") String cachedName, |
| 72 | + @Cached("importCAPISymbolUncached(nativeContext, name)") Object sym) { |
| 73 | + return sym; |
| 74 | + } |
| 75 | + |
| 76 | + // n.b. if 'singleContextAssumption' is valid, we may also cache the native context |
| 77 | + @Specialization(guards = {"nativeContext == cachedNativeContext", "cachedName.equals(name)"}, // |
| 78 | + limit = "1", // |
| 79 | + assumptions = "singleContextAssumption()", // |
| 80 | + replaces = "doReceiverCachedIdentity") |
| 81 | + @SuppressWarnings("unused") |
| 82 | + static Object doReceiverCached(CExtContext nativeContext, String name, |
| 83 | + @Cached("nativeContext") CExtContext cachedNativeContext, |
| 84 | + @Cached("name") String cachedName, |
| 85 | + @Cached("importCAPISymbolUncached(nativeContext, name)") Object sym) { |
| 86 | + return sym; |
| 87 | + } |
| 88 | + |
| 89 | + @Specialization(replaces = {"doReceiverCachedIdentity", "doReceiverCached"}, // |
| 90 | + limit = "1") |
| 91 | + static Object doWithContext(CExtContext nativeContext, String name, |
| 92 | + @CachedLibrary("nativeContext.getLLVMLibrary()") @SuppressWarnings("unused") InteropLibrary interopLib, |
| 93 | + @Cached PRaiseNode raiseNode) { |
| 94 | + return importCAPISymbol(raiseNode, interopLib, nativeContext.getLLVMLibrary(), name); |
| 95 | + } |
| 96 | + |
| 97 | + protected static Object importCAPISymbolUncached(CExtContext nativeContext, String name) { |
| 98 | + Object capiLibrary = nativeContext.getLLVMLibrary(); |
| 99 | + return importCAPISymbol(PRaiseNode.getUncached(), InteropLibrary.getFactory().getUncached(capiLibrary), capiLibrary, name); |
| 100 | + } |
| 101 | + |
| 102 | + private static Object importCAPISymbol(PRaiseNode raiseNode, InteropLibrary library, Object capiLibrary, String name) { |
| 103 | + try { |
| 104 | + return library.readMember(capiLibrary, name); |
| 105 | + } catch (UnknownIdentifierException e) { |
| 106 | + throw raiseNode.raise(PythonBuiltinClassType.SystemError, "invalid C API function: %s", name); |
| 107 | + } catch (UnsupportedMessageException e) { |
| 108 | + throw raiseNode.raise(PythonBuiltinClassType.SystemError, "corrupted C API library object: %s", capiLibrary); |
| 109 | + } |
| 110 | + } |
| 111 | + } |
| 112 | + |
| 113 | + @GenerateUncached |
| 114 | + public abstract static class PCallCExtFunction extends PNodeWithContext { |
| 115 | + |
| 116 | + public final Object call(CExtContext nativeContext, String name, Object... args) { |
| 117 | + return execute(nativeContext, name, args); |
| 118 | + } |
| 119 | + |
| 120 | + public abstract Object execute(CExtContext nativeContext, String name, Object[] args); |
| 121 | + |
| 122 | + @Specialization |
| 123 | + static Object doIt(CExtContext nativeContext, String name, Object[] args, |
| 124 | + @CachedLibrary(limit = "1") InteropLibrary interopLibrary, |
| 125 | + @Cached ImportCExtSymbolNode importCExtSymbolNode, |
| 126 | + @Cached BranchProfile profile, |
| 127 | + @Cached PRaiseNode raiseNode) { |
| 128 | + try { |
| 129 | + return interopLibrary.execute(importCExtSymbolNode.execute(nativeContext, name), args); |
| 130 | + } catch (UnsupportedTypeException | ArityException e) { |
| 131 | + profile.enter(); |
| 132 | + throw raiseNode.raise(PythonBuiltinClassType.TypeError, e); |
| 133 | + } catch (UnsupportedMessageException e) { |
| 134 | + profile.enter(); |
| 135 | + throw raiseNode.raise(PythonBuiltinClassType.TypeError, "C API symbol %s is not callable", name); |
| 136 | + } |
| 137 | + } |
| 138 | + } |
| 139 | + |
| 140 | +} |
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