mirror of https://github.com/nodejs/node.git
46 lines
1.7 KiB
C
46 lines
1.7 KiB
C
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// Copyright Joyent, Inc. and other Node contributors.
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//
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// Permission is hereby granted, free of charge, to any person obtaining a
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// copy of this software and associated documentation files (the
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// "Software"), to deal in the Software without restriction, including
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// without limitation the rights to use, copy, modify, merge, publish,
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// distribute, sublicense, and/or sell copies of the Software, and to permit
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// persons to whom the Software is furnished to do so, subject to the
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// following conditions:
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//
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// The above copyright notice and this permission notice shall be included
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// in all copies or substantial portions of the Software.
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//
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// THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS
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// OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF
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// MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN
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// NO EVENT SHALL THE AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM,
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// DAMAGES OR OTHER LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR
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// OTHERWISE, ARISING FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE
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// USE OR OTHER DEALINGS IN THE SOFTWARE.
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#ifndef SRC_NODE_INTERNALS_H_
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#define SRC_NODE_INTERNALS_H_
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namespace node {
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#ifndef offset_of
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// g++ in strict mode complains loudly about the system offsetof() macro
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// because it uses NULL as the base address.
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#define offset_of(type, member) \
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((intptr_t) ((char *) &(((type *) 8)->member) - 8))
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#endif
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#ifndef container_of
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#define container_of(ptr, type, member) \
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((type *) ((char *) (ptr) - offset_of(type, member)))
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#endif
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#ifndef ARRAY_SIZE
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#define ARRAY_SIZE(a) (sizeof((a)) / sizeof((a)[0]))
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#endif
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} // namespace node
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#endif // SRC_NODE_INTERNALS_H_
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