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-rw-r--r--src/core/lib/support/alloc.cc102
1 files changed, 102 insertions, 0 deletions
diff --git a/src/core/lib/support/alloc.cc b/src/core/lib/support/alloc.cc
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+++ b/src/core/lib/support/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 != NULL);
+ GPR_ASSERT(functions.realloc_fn != NULL);
+ GPR_ASSERT(functions.free_fn != NULL);
+ if (functions.zalloc_fn == NULL) {
+ functions.zalloc_fn = zalloc_with_gpr_malloc;
+ }
+ g_alloc_functions = functions;
+}
+
+void *gpr_malloc(size_t size) {
+ void *p;
+ if (size == 0) return NULL;
+ 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 NULL;
+ 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 == NULL)) return NULL;
+ 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]); }