/* * * 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 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_atm_no_barrier_fetch_add(&g_memory_counters.total_size_absolute, (gpr_atm)size); gpr_atm_no_barrier_fetch_add(&g_memory_counters.total_size_relative, (gpr_atm)size); gpr_atm_no_barrier_fetch_add(&g_memory_counters.total_allocs_absolute, (gpr_atm)1); gpr_atm_no_barrier_fetch_add(&g_memory_counters.total_allocs_relative, (gpr_atm)1); 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_atm_no_barrier_fetch_add(&g_memory_counters.total_size_absolute, (gpr_atm)size); gpr_atm_no_barrier_fetch_add(&g_memory_counters.total_size_relative, -(gpr_atm)*ptr); gpr_atm_no_barrier_fetch_add(&g_memory_counters.total_size_relative, (gpr_atm)size); gpr_atm_no_barrier_fetch_add(&g_memory_counters.total_allocs_absolute, (gpr_atm)1); 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_atm_no_barrier_fetch_add(&g_memory_counters.total_size_relative, -(gpr_atm)*ptr); gpr_atm_no_barrier_fetch_add(&g_memory_counters.total_allocs_relative, -(gpr_atm)1); 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)); 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); } struct grpc_memory_counters grpc_memory_counters_snapshot() { struct grpc_memory_counters counters; counters.total_size_relative = gpr_atm_no_barrier_load(&g_memory_counters.total_size_relative); counters.total_size_absolute = gpr_atm_no_barrier_load(&g_memory_counters.total_size_absolute); counters.total_allocs_relative = gpr_atm_no_barrier_load(&g_memory_counters.total_allocs_relative); counters.total_allocs_absolute = gpr_atm_no_barrier_load(&g_memory_counters.total_allocs_absolute); return counters; }