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0928b2115e
This allows single-source compilation and whole-program optimization using something like: make CFLAGS='-flto -ffunction-sections -fdata-sections -Wl,--gc-sections' Furthermore, move more compositor-agnostic utility functions/macros to util.h, similar to the original dwm sources.
59 lines
1.1 KiB
C
59 lines
1.1 KiB
C
/* See LICENSE.dwm file for copyright and license details. */
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#include <stdarg.h>
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#include <stdio.h>
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#include <stdlib.h>
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#include <string.h>
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#include <fcntl.h>
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#define MAX(A, B) ((A) > (B) ? (A) : (B))
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#define MIN(A, B) ((A) < (B) ? (A) : (B))
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#define LENGTH(X) (sizeof X / sizeof X[0])
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#define END(A) ((A) + LENGTH(A))
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static void die(const char *fmt, ...);
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static void *ecalloc(size_t nmemb, size_t size);
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static int fd_set_nonblock(int fd);
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void
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die(const char *fmt, ...) {
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va_list ap;
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va_start(ap, fmt);
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vfprintf(stderr, fmt, ap);
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va_end(ap);
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if (fmt[0] && fmt[strlen(fmt)-1] == ':') {
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fputc(' ', stderr);
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perror(NULL);
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} else {
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fputc('\n', stderr);
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}
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exit(1);
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}
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void *
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ecalloc(size_t nmemb, size_t size)
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{
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void *p;
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if (!(p = calloc(nmemb, size)))
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die("calloc:");
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return p;
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}
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int
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fd_set_nonblock(int fd) {
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int flags = fcntl(fd, F_GETFL);
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if (flags < 0) {
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perror("fcntl(F_GETFL):");
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return -1;
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}
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if (fcntl(fd, F_SETFL, flags | O_NONBLOCK) < 0) {
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perror("fcntl(F_SETFL):");
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return -1;
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}
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return 0;
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}
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