From 9202b3fdfdaf890752d7472692296490ec55c750 Mon Sep 17 00:00:00 2001 From: Craig Tiller Date: Sun, 12 Mar 2017 22:30:38 -0700 Subject: Arena allocator for grpc --- src/core/lib/support/arena.h | 54 ++++++++++++++++++++++++++++++++++++++++++++ 1 file changed, 54 insertions(+) create mode 100644 src/core/lib/support/arena.h (limited to 'src/core/lib/support/arena.h') diff --git a/src/core/lib/support/arena.h b/src/core/lib/support/arena.h new file mode 100644 index 0000000000..c28033ffc3 --- /dev/null +++ b/src/core/lib/support/arena.h @@ -0,0 +1,54 @@ +/* + * + * Copyright 2017, 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. + * + */ + +// \file Arena based allocator +// Allows very fast allocation of memory, but that memory cannot be freed until +// the arena as a whole is freed +// Tracks the total memory allocated against it, so that future arenas can +// pre-allocate the right amount of memory + +#ifndef GRPC_CORE_LIB_SUPPORT_ARENA_H +#define GRPC_CORE_LIB_SUPPORT_ARENA_H + +#include + +typedef struct gpr_arena gpr_arena; + +// Create an arena, with \a initial_size bytes in the first allocated buffer +gpr_arena *gpr_arena_create(size_t initial_size); +// Allocate \a size bytes from the arena +void *gpr_arena_alloc(gpr_arena *arena, size_t size); +// Destroy an arena, returning the total number of bytes allocated +size_t gpr_arena_destroy(gpr_arena *arena); + +#endif /* GRPC_CORE_LIB_SUPPORT_ARENA_H */ -- cgit v1.2.3