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add06955a2
These files have been missing copyright headers since
they were added in comit d0b72e2590 ("GSoC/Buflib:
Add buflib memory alocator to the core.").
Thomas Martitz seems to be the original author, which
is documented in the commit metadata and backed up by
emails from the rockbox-dev archive, for example [1].
[1]: https://www.rockbox.org/mail/archive/rockbox-dev-archive-2011-08/0000.shtml
Change-Id: Id1a3abd4975674ffbc6f7e9123ee57d49bcaa38e
162 lines
4.2 KiB
C
162 lines
4.2 KiB
C
/***************************************************************************
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* __________ __ ___.
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* Open \______ \ ____ ____ | | _\_ |__ _______ ___
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* Source | _// _ \_/ ___\| |/ /| __ \ / _ \ \/ /
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* Jukebox | | ( <_> ) \___| < | \_\ ( <_> > < <
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* Firmware |____|_ /\____/ \___ >__|_ \|___ /\____/__/\_ \
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* \/ \/ \/ \/ \/
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* $Id$
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*
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* Copyright (C) 2011 Thomas Martitz
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*
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* This program is free software; you can redistribute it and/or
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* modify it under the terms of the GNU General Public License
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* as published by the Free Software Foundation; either version 2
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* of the License, or (at your option) any later version.
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*
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* This software is distributed on an "AS IS" basis, WITHOUT WARRANTY OF ANY
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* KIND, either express or implied.
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*
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****************************************************************************/
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#include "config.h"
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#include <string.h>
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#include "system.h"
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#include "core_alloc.h"
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#include "buflib.h"
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/* not static so it can be discovered by core_get_data() */
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struct buflib_context core_ctx;
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#if (CONFIG_PLATFORM & PLATFORM_NATIVE) && !defined(__PCTOOL__)
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#if defined(IPOD_VIDEO) && !defined(BOOTLOADER)
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/* defined in linker script */
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extern unsigned char audiobuffer[];
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extern unsigned char *audiobufend_lds[];
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/* pointer to end of audio buffer filled at runtime allocator_init */
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unsigned char *audiobufend;
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#elif defined(SANSA_E200) && defined(HAVE_BOOTLOADER_USB_MODE)
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/* defined in linker script */
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extern unsigned char freebuffer[];
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extern unsigned char freebufferend[];
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/* map linker symbol to the audiobuffer in order to use core_alloc */
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unsigned char *audiobuffer = (unsigned char *)freebuffer;
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unsigned char *audiobufend = (unsigned char *)freebufferend;
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#else /* !IPOD_VIDEO, !SANSA_E200&&BOOTLOADERUSB */
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/* defined in linker script */
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extern unsigned char audiobuffer[];
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extern unsigned char audiobufend[];
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#endif
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#else /* PLATFORM_HOSTED */
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static unsigned char audiobuffer[(MEMORYSIZE-1)*1024*1024];
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unsigned char *audiobufend = audiobuffer + sizeof(audiobuffer);
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#endif
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#ifdef BUFLIB_DEBUG_PRINT
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/* debug test alloc */
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static int test_alloc;
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#endif
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void core_allocator_init(void)
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{
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unsigned char *start = ALIGN_UP(audiobuffer, sizeof(intptr_t));
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#if defined(IPOD_VIDEO) && !defined(BOOTLOADER) && !defined(SIMULATOR)
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audiobufend=(unsigned char *)audiobufend_lds;
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if(MEMORYSIZE==64 && probed_ramsize!=64)
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{
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audiobufend -= (32<<20);
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}
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#endif
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buflib_init(&core_ctx, start, audiobufend - start);
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#ifdef BUFLIB_DEBUG_PRINT
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test_alloc = core_alloc(112);
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#endif
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}
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/* Allocate memory in the "core" context. See documentation
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* of buflib_alloc_ex() for details.
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*
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* Note: Buffers allocated by this functions are movable.
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* Don't pass them to functions that call yield()
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* like disc input/output. */
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int core_alloc(size_t size)
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{
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return buflib_alloc_ex(&core_ctx, size, NULL);
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}
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int core_alloc_ex(size_t size, struct buflib_callbacks *ops)
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{
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return buflib_alloc_ex(&core_ctx, size, ops);
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}
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size_t core_available(void)
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{
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return buflib_available(&core_ctx);
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}
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size_t core_allocatable(void)
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{
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return buflib_allocatable(&core_ctx);
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}
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int core_free(int handle)
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{
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return buflib_free(&core_ctx, handle);
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}
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int core_alloc_maximum(size_t *size, struct buflib_callbacks *ops)
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{
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return buflib_alloc_maximum(&core_ctx, size, ops);
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}
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bool core_shrink(int handle, void* new_start, size_t new_size)
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{
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return buflib_shrink(&core_ctx, handle, new_start, new_size);
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}
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void core_pin(int handle)
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{
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buflib_pin(&core_ctx, handle);
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}
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void core_unpin(int handle)
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{
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buflib_unpin(&core_ctx, handle);
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}
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unsigned core_pin_count(int handle)
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{
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return buflib_pin_count(&core_ctx, handle);
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}
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#ifdef BUFLIB_DEBUG_PRINT
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int core_get_num_blocks(void)
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{
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return buflib_get_num_blocks(&core_ctx);
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}
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bool core_print_block_at(int block_num, char* buf, size_t bufsize)
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{
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return buflib_print_block_at(&core_ctx, block_num, buf, bufsize);
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}
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bool core_test_free(void)
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{
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bool ret = test_alloc > 0;
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if (ret)
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test_alloc = core_free(test_alloc);
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return ret;
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}
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#endif
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#ifdef BUFLIB_DEBUG_CHECK_VALID
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void core_check_valid(void)
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{
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buflib_check_valid(&core_ctx);
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}
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#endif
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