malloc

[protos/libecoli.git] / lib / ecoli_malloc.c

diff --git a/lib/ecoli_malloc.c b/lib/ecoli_malloc.c
new file mode 100644 (file)
index 0000000..11782a7
--- /dev/null
+++ b/lib/ecoli_malloc.c
@@ -0,0 +1,111 @@
+/*
+ * Copyright (c) 2016, Olivier MATZ <zer0@droids-corp.org>
+ *
+ * Redistribution and use in source and binary forms, with or without
+ * modification, are permitted provided that the following conditions are met:
+ *
+ *     * Redistributions of source code must retain the above copyright
+ *       notice, this list of conditions and the following disclaimer.
+ *     * 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.
+ *     * Neither the name of the University of California, Berkeley nor the
+ *       names of its contributors may 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 AND 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.
+ */
+
+
+#include <ecoli_malloc.h>
+
+#include <stdlib.h>
+#include <string.h>
+#include <errno.h>
+
+struct ec_malloc_handler ec_malloc_handler;
+
+int ec_malloc_register(ec_malloc_t usr_malloc, ec_free_t usr_free,
+       ec_realloc_t usr_realloc)
+{
+       if (usr_malloc == NULL || usr_free == NULL || usr_realloc == NULL)
+               return -1;
+
+       ec_malloc_handler.malloc = usr_malloc;
+       ec_malloc_handler.free = usr_free;
+       ec_malloc_handler.realloc = usr_realloc;
+
+       return 0;
+}
+
+void *__ec_malloc(size_t size)
+{
+       return ec_malloc_handler.malloc(size);
+}
+
+void __ec_free(void *ptr)
+{
+       ec_malloc_handler.free(ptr);
+}
+
+void *__ec_calloc(size_t nmemb, size_t size)
+{
+       void *ptr;
+       size_t total;
+
+       total = size * nmemb;
+       if (nmemb != 0 && size != (total / nmemb)) {
+               errno = ENOMEM;
+               return NULL;
+       }
+
+       ptr = __ec_malloc(total);
+       if (ptr == NULL)
+               return NULL;
+
+       memset(ptr, 0, size);
+       return ptr;
+}
+
+void *__ec_realloc(void *ptr, size_t size)
+{
+       return ec_malloc_handler.realloc(ptr, size);
+}
+
+char *__ec_strdup(const char *s)
+{
+       size_t sz = strlen(s) + 1;
+       char *s2;
+
+       s2 = __ec_malloc(sz);
+       if (s2 == NULL)
+               return NULL;
+
+       memcpy(s2, s, sz);
+
+       return s2;
+}
+
+char *__ec_strndup(const char *s, size_t n)
+{
+       size_t sz = strnlen(s, n);
+       char *s2;
+
+       s2 = __ec_malloc(sz + 1);
+       if (s2 == NULL)
+               return NULL;
+
+       memcpy(s2, s, sz);
+       s2[sz] = '\0';
+
+       return s2;
+}