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author | Ben Cheng <bccheng@google.com> | 2014-03-25 22:37:19 -0700 |
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committer | Ben Cheng <bccheng@google.com> | 2014-03-25 22:37:19 -0700 |
commit | 1bc5aee63eb72b341f506ad058502cd0361f0d10 (patch) | |
tree | c607e8252f3405424ff15bc2d00aa38dadbb2518 /gcc-4.9/libgo/runtime/interface.h | |
parent | 283a0bf58fcf333c58a2a92c3ebbc41fb9eb1fdb (diff) | |
download | toolchain_gcc-1bc5aee63eb72b341f506ad058502cd0361f0d10.tar.gz toolchain_gcc-1bc5aee63eb72b341f506ad058502cd0361f0d10.tar.bz2 toolchain_gcc-1bc5aee63eb72b341f506ad058502cd0361f0d10.zip |
Initial checkin of GCC 4.9.0 from trunk (r208799).
Change-Id: I48a3c08bb98542aa215912a75f03c0890e497dba
Diffstat (limited to 'gcc-4.9/libgo/runtime/interface.h')
-rw-r--r-- | gcc-4.9/libgo/runtime/interface.h | 57 |
1 files changed, 57 insertions, 0 deletions
diff --git a/gcc-4.9/libgo/runtime/interface.h b/gcc-4.9/libgo/runtime/interface.h new file mode 100644 index 000000000..f3068a656 --- /dev/null +++ b/gcc-4.9/libgo/runtime/interface.h @@ -0,0 +1,57 @@ +/* interface.h -- the interface type for Go. + + Copyright 2009 The Go Authors. All rights reserved. + Use of this source code is governed by a BSD-style + license that can be found in the LICENSE file. */ + +#ifndef LIBGO_INTERFACE_H +#define LIBGO_INTERFACE_H + +struct __go_type_descriptor; + +/* A variable of interface type is an instance of this struct, if the + interface has any methods. */ + +struct __go_interface +{ + /* A pointer to the interface method table. The first pointer is + the type descriptor of the object. Subsequent pointers are + pointers to functions. This is effectively the vtable for this + interface. The function pointers are in the same order as the + list in the internal representation of the interface, which sorts + them by name. */ + const void **__methods; + + /* The object. If the object is a pointer--if the type descriptor + code is GO_PTR or GO_UNSAFE_POINTER--then this field is the value + of the object itself. Otherwise this is a pointer to memory + which holds the value. */ + void *__object; +}; + +/* A variable of an empty interface type is an instance of this + struct. */ + +struct __go_empty_interface +{ + /* The type descriptor of the object. */ + const struct __go_type_descriptor *__type_descriptor; + + /* The object. This is the same as __go_interface above. */ + void *__object; +}; + +extern void * +__go_convert_interface (const struct __go_type_descriptor *, + const struct __go_type_descriptor *); + +extern void * +__go_convert_interface_2 (const struct __go_type_descriptor *, + const struct __go_type_descriptor *, + _Bool may_fail); + +extern _Bool +__go_can_convert_to_interface(const struct __go_type_descriptor *, + const struct __go_type_descriptor *); + +#endif /* !defined(LIBGO_INTERFACE_H) */ |