1 files changed, 102 insertions, 0 deletions
diff --git a/src/core/lib/gpr/alloc.cc b/src/core/lib/gpr/alloc.cc
new file mode 100644
index 0000000000..518bdb99f7
--- /dev/null
+++ b/src/core/lib/gpr/alloc.cc
@@ -0,0 +1,102 @@
+/*
+ *
+ * Copyright 2015 gRPC authors.
+ *
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
+ *
+ *     http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ *
+ */
+
+#include <grpc/support/alloc.h>
+
+#include <grpc/support/log.h>
+#include <grpc/support/port_platform.h>
+#include <stdlib.h>
+#include <string.h>
+#include "src/core/lib/profiling/timers.h"
+
+static void* zalloc_with_calloc(size_t sz) { return calloc(sz, 1); }
+
+static void* zalloc_with_gpr_malloc(size_t sz) {
+  void* p = gpr_malloc(sz);
+  memset(p, 0, sz);
+  return p;
+}
+
+static gpr_allocation_functions g_alloc_functions = {malloc, zalloc_with_calloc,
+                                                     realloc, free};
+
+gpr_allocation_functions gpr_get_allocation_functions() {
+  return g_alloc_functions;
+}
+
+void gpr_set_allocation_functions(gpr_allocation_functions functions) {
+  GPR_ASSERT(functions.malloc_fn != nullptr);
+  GPR_ASSERT(functions.realloc_fn != nullptr);
+  GPR_ASSERT(functions.free_fn != nullptr);
+  if (functions.zalloc_fn == nullptr) {
+    functions.zalloc_fn = zalloc_with_gpr_malloc;
+  }
+  g_alloc_functions = functions;
+}
+
+void* gpr_malloc(size_t size) {
+  void* p;
+  if (size == 0) return nullptr;
+  GPR_TIMER_BEGIN("gpr_malloc", 0);
+  p = g_alloc_functions.malloc_fn(size);
+  if (!p) {
+    abort();
+  }
+  GPR_TIMER_END("gpr_malloc", 0);
+  return p;
+}
+
+void* gpr_zalloc(size_t size) {
+  void* p;
+  if (size == 0) return nullptr;
+  GPR_TIMER_BEGIN("gpr_zalloc", 0);
+  p = g_alloc_functions.zalloc_fn(size);
+  if (!p) {
+    abort();
+  }
+  GPR_TIMER_END("gpr_zalloc", 0);
+  return p;
+}
+
+void gpr_free(void* p) {
+  GPR_TIMER_BEGIN("gpr_free", 0);
+  g_alloc_functions.free_fn(p);
+  GPR_TIMER_END("gpr_free", 0);
+}
+
+void* gpr_realloc(void* p, size_t size) {
+  if ((size == 0) && (p == nullptr)) return nullptr;
+  GPR_TIMER_BEGIN("gpr_realloc", 0);
+  p = g_alloc_functions.realloc_fn(p, size);
+  if (!p) {
+    abort();
+  }
+  GPR_TIMER_END("gpr_realloc", 0);
+  return p;
+}
+
+void* gpr_malloc_aligned(size_t size, size_t alignment_log) {
+  size_t alignment = ((size_t)1) << alignment_log;
+  size_t extra = alignment - 1 + sizeof(void*);
+  void* p = gpr_malloc(size + extra);
+  void** ret = (void**)(((uintptr_t)p + extra) & ~(alignment - 1));
+  ret[-1] = p;
+  return (void*)ret;
+}
+
+void gpr_free_aligned(void* ptr) { gpr_free(((void**)ptr)[-1]); }