add offsetof helper
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963cfaa843
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@ -31,6 +31,7 @@
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#ifndef WIN32
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#include <unistd.h>
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#include <stddef.h>
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#ifndef DARWIN
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#include <strings.h>
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#endif
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@ -100,6 +101,12 @@
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#define strnEQ(s1, s2, n) (strncmp(s1, s2, n) == 0)
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#endif
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#ifdef offsetof
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#define sigar_offsetof offsetof
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#else
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#define sigar_offsetof(type, field) ((size_t)(&((type *)0)->field))
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#endif
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#define SIGAR_MSEC 1000L
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#define SIGAR_NSEC 1000000000L
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