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	emalloc.h - blind - suckless command-line video editing utility
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	emalloc.h (2045B)
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	1 /* See LICENSE file for copyright and license details. */
	2 #include <stdlib.h>
	3 #include <stdint.h>
	4
	5 #define emalloc(...) enmalloc(1, __VA_ARGS__)
	6 #define emalloc2(...) enmalloc2(1, __VA_ARGS__)
	7 #define emalloc3(...) enmalloc3(1, __VA_ARGS__)
	8 #define ecalloc(...) encalloc(1, __VA_ARGS__)
	9 #define erealloc(...) enrealloc(1, __VA_ARGS__)
	10 #define erealloc2(...) enrealloc2(1, __VA_ARGS__)
	11 #define erealloc3(...) enrealloc3(1, __VA_ARGS__)
	12
	13 #define malloc2(n, m) malloc(n * m);
	14 #define malloc3(n1, n2, n3) malloc(n1 * n2 * n3);
	15 #define realloc2(p, n, m) realloc(p, n * m);
	16 #define realloc3(p, n1, n2, n3) realloc(p, n1 * n2 * n3);
	17
	18 static inline void *
	19 enmalloc(int status, size_t n)
	20 {
	21 void *ptr = malloc(n);
	22 if (!ptr)
	23 enprintf(status, "malloc: out of memory\n");
	24 return ptr;
	25 }
	26
	27 static inline void *
	28 enmalloc2(int status, size_t n, size_t m)
	29 {
	30 void *ptr;
	31 if (n > SIZE_MAX / m \|\| !(ptr = malloc(n * m)))
	32 enprintf(status, "malloc: out of memory\n");
	33 return ptr;
	34 }
	35
	36 static inline void *
	37 enmalloc3(int status, size_t n1, size_t n2, size_t n3)
	38 {
	39 void *ptr;
	40 size_t n = n1;
	41 if (n2 > SIZE_MAX / n \|\|
	42 n3 > SIZE_MAX / (n *= n2) \|\|
	43 !(ptr = malloc(n * n3)))
	44 enprintf(status, "malloc: out of memory\n");
	45 return ptr;
	46 }
	47
	48 static inline void *
	49 encalloc(int status, size_t n, size_t m)
	50 {
	51 void *ptr = calloc(n, m);
	52 if (!ptr)
	53 enprintf(status, "calloc: out of memory\n");
	54 return ptr;
	55 }
	56
	57 static inline void *
	58 enrealloc(int status, void *ptr, size_t n)
	59 {
	60 ptr = realloc(ptr, n);
	61 if (!ptr)
	62 enprintf(status, "realloc: out of memory\n");
	63 return ptr;
	64 }
	65
	66 static inline void *
	67 enrealloc2(int status, void *ptr, size_t n, size_t m)
	68 {
	69 if (n > SIZE_MAX / m \|\| !(ptr = realloc(ptr, n * m)))
	70 enprintf(status, "realloc: out of memory\n");
	71 return ptr;
	72 }
	73
	74 static inline void *
	75 enrealloc3(int status, void *ptr, size_t n1, size_t n2, size_t n3)
	76 {
	77 size_t n = n1;
	78 if (n2 > SIZE_MAX / n \|\|
	79 n3 > SIZE_MAX / (n *= n2) \|\|
	80 !(ptr = realloc(ptr, n * n3)))
	81 enprintf(status, "realloc: out of memory\n");
	82 return ptr;
	83 }