--- /dev/null
+/******************************************************************************/
+/* pfixtools: a collection of postfix related tools */
+/* ~~~~~~~~~ */
+/* ________________________________________________________________________ */
+/* */
+/* Redistribution and use in source and binary forms, with or without */
+/* modification, are permitted provided that the following conditions */
+/* are met: */
+/* */
+/* 1. Redistributions of source code must retain the above copyright */
+/* notice, this list of conditions and the following disclaimer. */
+/* 2. Redistributions in binary form must reproduce the above copyright */
+/* notice, this list of conditions and the following disclaimer in the */
+/* documentation and/or other materials provided with the distribution. */
+/* 3. The names of its contributors may not be used to endorse or promote */
+/* products derived from this software without specific prior written */
+/* permission. */
+/* */
+/* THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND */
+/* ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE */
+/* IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR */
+/* PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS */
+/* BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR */
+/* CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF */
+/* SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS */
+/* INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN */
+/* CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) */
+/* ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF */
+/* THE POSSIBILITY OF SUCH DAMAGE. */
+/******************************************************************************/
+
+/*
+ * Copyright © 2006 Pierre Habouzit
+ */
+
+#ifndef PFIXTOOLS_MEM_H
+#define PFIXTOOLS_MEM_H
+
+#include <assert.h>
+#include <ctype.h>
+#include <stdlib.h>
+#include <string.h>
+
+#define MIN(a, b) ((a) < (b) ? (a) : (b))
+#define MAX(a, b) ((a) > (b) ? (a) : (b))
+
+#define ssizeof(foo) (ssize_t)sizeof(foo)
+#define countof(foo) (ssizeof(foo) / ssizeof(foo[0]))
+
+#define p_new(type, count) ((type *)xmalloc(sizeof(type) * (count)))
+#define p_clear(p, count) ((void)memset((p), 0, sizeof(*(p)) * (count)))
+#define p_dup(p, count) xmemdup((p), sizeof(*(p)) * (count))
+#define p_dupstr(p, len) xmemdupstr((p), (len))
+#define p_realloc(pp, count) xrealloc((void*)(pp), sizeof(**(pp)) * (count))
+
+# define p_alloc_nr(x) (((x) + 16) * 3 / 2)
+# define p_allocgrow(pp, goalnb, allocnb) \
+ do { \
+ if ((goalnb) > *(allocnb)) { \
+ if (p_alloc_nr(goalnb) > *(allocnb)) { \
+ *(allocnb) = (goalnb); \
+ } else { \
+ *(allocnb) = p_alloc_nr(goalnb); \
+ } \
+ p_realloc(pp, *(allocnb)); \
+ } \
+ } while (0)
+
+#ifdef __GNUC__
+
+# define p_delete(mem_pp) \
+ do { \
+ typeof(**(mem_pp)) **__ptr = (mem_pp); \
+ free(*__ptr); \
+ *__ptr = NULL; \
+ } while(0)
+
+#else
+
+# define p_delete(mem_p) \
+ do { \
+ void *__ptr = (mem_p); \
+ free(*__ptr); \
+ *(void **)__ptr = NULL; \
+ } while (0)
+
+#endif
+
+static inline void *xmalloc(ssize_t size) {
+ void *mem;
+
+ if (size <= 0)
+ return NULL;
+
+ mem = calloc(size, 1);
+ if (!mem)
+ abort();
+ return mem;
+}
+
+static inline void xmemfree(void **ptr) {
+ p_delete(ptr);
+}
+
+static inline void xrealloc(void **ptr, ssize_t newsize) {
+ if (newsize <= 0) {
+ p_delete(ptr);
+ } else {
+ *ptr = realloc(*ptr, newsize);
+ if (!*ptr)
+ abort();
+ }
+}
+
+static inline void *xmemdup(const void *src, ssize_t size) {
+ return memcpy(xmalloc(size), src, size);
+}
+
+static inline void *xmemdupstr(const void *src, ssize_t len) {
+ char *res = memcpy(xmalloc(len + 1), src, len);
+ res[len] = '\0';
+ return res;
+}
+
+
+#define DO_INIT(type, prefix) \
+ static inline type * prefix##_init(type *var) { \
+ p_clear(var, 1); \
+ return var; \
+ }
+#define DO_WIPE(type, prefix) \
+ static inline void prefix##_wipe(type *var __attribute__((unused))) { }
+
+#define DO_NEW(type, prefix) \
+ static inline type * prefix##_new(void) { \
+ return prefix##_init(p_new(type, 1)); \
+ }
+#define DO_DELETE(type, prefix) \
+ static inline void __attribute__((nonnull)) \
+ prefix##_delete(type **var) { \
+ if (*var) { \
+ prefix##_wipe(*var); \
+ p_delete(var); \
+ } \
+ }
+
+#endif /* PFIXTOOLS_MEM_H */
projects / apps / pfixtools.git / blobdiff