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nghttp2/tests/malloc_wrapper.c

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+/*
+ * nghttp2 - HTTP/2 C Library
+ *
+ * Copyright (c) 2012 Tatsuhiro Tsujikawa
+ *
+ * Permission is hereby granted, free of charge, to any person obtaining
+ * a copy of this software and associated documentation files (the
+ * "Software"), to deal in the Software without restriction, including
+ * without limitation the rights to use, copy, modify, merge, publish,
+ * distribute, sublicense, and/or sell copies of the Software, and to
+ * permit persons to whom the Software is furnished to do so, subject to
+ * the following conditions:
+ *
+ * The above copyright notice and this permission notice shall be
+ * included in all copies or substantial portions of the Software.
+ *
+ * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND,
+ * EXPRESS OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF
+ * MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND
+ * NONINFRINGEMENT. IN NO EVENT SHALL THE AUTHORS OR COPYRIGHT HOLDERS BE
+ * LIABLE FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN AN ACTION
+ * OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN CONNECTION
+ * WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE SOFTWARE.
+ */
+#include "malloc_wrapper.h"
+
+int nghttp2_failmalloc = 0;
+int nghttp2_failstart = 0;
+int nghttp2_countmalloc = 1;
+int nghttp2_nmalloc = 0;
+
+#define CHECK_PREREQ                                                           \
+  do {                                                                         \
+    if (nghttp2_failmalloc && nghttp2_nmalloc >= nghttp2_failstart) {          \
+      return NULL;                                                             \
+    }                                                                          \
+    if (nghttp2_countmalloc) {                                                 \
+      ++nghttp2_nmalloc;                                                       \
+    }                                                                          \
+  } while (0)
+
+static void *my_malloc(size_t size, void *mud) {
+  (void)mud;
+
+  CHECK_PREREQ;
+  return malloc(size);
+}
+
+static void my_free(void *ptr, void *mud) {
+  (void)mud;
+
+  free(ptr);
+}
+
+static void *my_calloc(size_t nmemb, size_t size, void *mud) {
+  (void)mud;
+
+  CHECK_PREREQ;
+  return calloc(nmemb, size);
+}
+
+static void *my_realloc(void *ptr, size_t size, void *mud) {
+  (void)mud;
+
+  CHECK_PREREQ;
+  return realloc(ptr, size);
+}
+
+static nghttp2_mem mem = {NULL, my_malloc, my_free, my_calloc, my_realloc};
+
+nghttp2_mem *nghttp2_mem_fm(void) { return &mem; }
+
+static int failmalloc_bk, countmalloc_bk;
+
+void nghttp2_failmalloc_pause(void) {
+  failmalloc_bk = nghttp2_failmalloc;
+  countmalloc_bk = nghttp2_countmalloc;
+  nghttp2_failmalloc = 0;
+  nghttp2_countmalloc = 0;
+}
+
+void nghttp2_failmalloc_unpause(void) {
+  nghttp2_failmalloc = failmalloc_bk;
+  nghttp2_countmalloc = countmalloc_bk;
+}