| /* |
| * |
| * Copyright 2016, Google Inc. |
| * All rights reserved. |
| * |
| * 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 Google Inc. 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 COPYRIGHT HOLDERS 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 COPYRIGHT |
| * OWNER 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. |
| * |
| */ |
| |
| #include <stdint.h> |
| #include <string.h> |
| |
| #include <grpc/support/alloc.h> |
| #include <grpc/support/sync.h> |
| |
| #include "test/core/util/memory_counters.h" |
| |
| static gpr_mu g_memory_mutex; |
| static struct grpc_memory_counters g_memory_counters; |
| static gpr_allocation_functions g_old_allocs; |
| |
| static void *guard_malloc(size_t size); |
| static void *guard_realloc(void *vptr, size_t size); |
| static void guard_free(void *vptr); |
| |
| static void *guard_malloc(size_t size) { |
| size_t *ptr; |
| if (!size) return NULL; |
| gpr_mu_lock(&g_memory_mutex); |
| g_memory_counters.total_size_absolute += size; |
| g_memory_counters.total_size_relative += size; |
| g_memory_counters.total_allocs_absolute++; |
| g_memory_counters.total_allocs_relative++; |
| gpr_mu_unlock(&g_memory_mutex); |
| ptr = g_old_allocs.malloc_fn(size + sizeof(size)); |
| *ptr++ = size; |
| return ptr; |
| } |
| |
| static void *guard_realloc(void *vptr, size_t size) { |
| size_t *ptr = vptr; |
| if (vptr == NULL) { |
| return guard_malloc(size); |
| } |
| if (size == 0) { |
| guard_free(vptr); |
| return NULL; |
| } |
| --ptr; |
| gpr_mu_lock(&g_memory_mutex); |
| g_memory_counters.total_size_absolute += size; |
| g_memory_counters.total_size_relative -= *ptr; |
| g_memory_counters.total_size_relative += size; |
| g_memory_counters.total_allocs_absolute++; |
| gpr_mu_unlock(&g_memory_mutex); |
| ptr = g_old_allocs.realloc_fn(ptr, size + sizeof(size)); |
| *ptr++ = size; |
| return ptr; |
| } |
| |
| static void guard_free(void *vptr) { |
| size_t *ptr = vptr; |
| if (!vptr) return; |
| --ptr; |
| gpr_mu_lock(&g_memory_mutex); |
| g_memory_counters.total_size_relative -= *ptr; |
| g_memory_counters.total_allocs_relative--; |
| gpr_mu_unlock(&g_memory_mutex); |
| g_old_allocs.free_fn(ptr); |
| } |
| |
| struct gpr_allocation_functions g_guard_allocs = {guard_malloc, guard_realloc, |
| guard_free}; |
| |
| void grpc_memory_counters_init() { |
| memset(&g_memory_counters, 0, sizeof(g_memory_counters)); |
| gpr_mu_init(&g_memory_mutex); |
| g_old_allocs = gpr_get_allocation_functions(); |
| gpr_set_allocation_functions(g_guard_allocs); |
| } |
| |
| void grpc_memory_counters_destroy() { |
| gpr_set_allocation_functions(g_old_allocs); |
| gpr_mu_destroy(&g_memory_mutex); |
| } |
| |
| struct grpc_memory_counters grpc_memory_counters_snapshot() { |
| struct grpc_memory_counters counters; |
| gpr_mu_lock(&g_memory_mutex); |
| counters = g_memory_counters; |
| gpr_mu_unlock(&g_memory_mutex); |
| return counters; |
| } |