23 lines
1011 B
C
23 lines
1011 B
C
#ifndef DEFS_H_
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#define DEFS_H_
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#include <stdint.h>
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#include <stdbool.h>
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#include <stdlib.h>
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#include <stddef.h>
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#define lengthof(arr) (sizeof(arr) / sizeof(*arr))
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#define containerof(ptr, contype, membpath) ((contype*)(0 ? (void)(((contype*)NULL)->membpath = *(ptr)) : (void)0, ((char *)(ptr)) - offsetof(contype, membpath)))
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// Assuming child type has a field for the base type
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// So for structs it is usually actual downcast, but for unions it is an upcast
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#define DOWNCAST(contype, basename, ptr) containerof(ptr, contype, as_##basename)
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// Expects ptr to be of type srctype* or void*, returns (dsttype*)ptr
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#define IMPLICIT_CAST(dsttype, srctype, ptr) (((union { typeof(srctype) *src; typeof(dsttype) *dst; }){.src = ptr}).dst)
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#define T_ALLOC(count, T) ((T*)calloc(count, sizeof(T)))
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#define MODULE_CONSTRUCTOR(name) __attribute__((constructor)) static void name(void)
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#define DEBUG_PRINT_VALUE(x, fmt) fprintf(stderr, #x " = " fmt "\n", x); fflush(stderr)
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#endif /* end of include guard: DEFS_H_ */
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