X-Git-Url: https://jasonwoof.com/gitweb/?p=dwm.git;a=blobdiff_plain;f=util.c;h=d8e661256ee38f37a6a6adc41462d95395263a89;hp=3553f5d3f01ab8ad5cb3d5861a1d6811238c834f;hb=7fe717c29f9dafc4fc38313adbbb7c85619dec69;hpb=8a34fa50f75f4d6d8af234ac0c4f6d40b988d700

diff --git a/util.c b/util.c
index 3553f5d..d8e6612 100644
--- a/util.c
+++ b/util.c
@@ -6,9 +6,15 @@
 #include <stdarg.h>
 #include <stdio.h>
 #include <stdlib.h>
+#include <string.h>
+#include <sys/types.h>
+#include <sys/wait.h>
+#include <unistd.h>
+
+#include "dwm.h"
 
 void
-error(char *errstr, ...) {
+error(const char *errstr, ...) {
 	va_list ap;
 	va_start(ap, errstr);
 	vfprintf(stderr, errstr, ap);
@@ -16,3 +22,74 @@ error(char *errstr, ...) {
 	exit(1);
 }
 
+static void
+bad_malloc(unsigned int size)
+{
+	fprintf(stderr, "fatal: could not malloc() %d bytes\n",
+			(int) size);
+	exit(1);
+}
+
+void *
+emallocz(unsigned int size)
+{
+	void *res = calloc(1, size);
+	if(!res)
+		bad_malloc(size);
+	return res;
+}
+
+void *
+emalloc(unsigned int size)
+{
+	void *res = malloc(size);
+	if(!res)
+		bad_malloc(size);
+	return res;
+}
+
+void *
+erealloc(void *ptr, unsigned int size)
+{
+	void *res = realloc(ptr, size);
+	if(!res)
+		bad_malloc(size);
+	return res;
+}
+
+char *
+estrdup(const char *str)
+{
+	char *res = strdup(str);
+	if(!res)
+		bad_malloc(strlen(str));
+	return res;
+}
+
+void
+swap(void **p1, void **p2)
+{
+	void *tmp = *p1;
+	*p1 = *p2;
+	*p2 = tmp;
+}
+
+void
+spawn(Arg *arg)
+{
+	char **argv = (char **)arg->argv;
+	if(!argv || !argv[0])
+		return;
+	if(fork() == 0) {
+		if(fork() == 0) {
+			if(dpy)
+				close(ConnectionNumber(dpy));
+			setsid();
+			execvp(argv[0], argv);
+			fprintf(stderr, "dwm: execvp %s", argv[0]);
+			perror(" failed");
+		}
+		exit (0);
+	}
+	wait(0);
+}