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rockbox/firmware/chunk_alloc.c

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chunk_alloc chunk_alloc allows arrays (or any data) to be allocated in smaller chunks you have to save the indices.. variable data will have variable indices you need to store these as [chunk_alloc] doesn't keep track if you have a fixed size for each alloc you can do indice / sizeof(data) or index * sizeof(data) to convert Lots of debug stuff still in and it needs optimization User provides chunk_size and max_chunks max_chunks * struct chunk will be allocated at start with (1) chunk_size allocation initially alloc_chunk() with size = 0 shrinks the last allocation to the size of the data used add OOM checks on buflib_alloc -- oops move bytes available to the header -- less memory per chunk & better alignment keep track of the current in use chunk index -- should speed things up a bit Now allows: realloc chunk header larger allocations than chunk size reallocs smaller than existing will shrink the current array rather than alloc a new and copy data Comments welcome :) Change-Id: I8ed170eef73da95da19430a80b32e5debf0c8276
2023-01-08 06:42:27 +00:00
/***************************************************************************
* __________ __ ___.
* Open \______ \ ____ ____ | | _\_ |__ _______ ___
* Source | _// _ \_/ ___\| |/ /| __ \ / _ \ \/ /
* Jukebox | | ( <_> ) \___| < | \_\ ( <_> > < <
* Firmware |____|_ /\____/ \___ >__|_ \|___ /\____/__/\_ \
* \/ \/ \/ \/ \/
* $Id$
*
* Copyright (C) 2023 by William Wilgus
*
* This program is free software; you can redistribute it and/or
* modify it under the terms of the GNU General Public License
* as published by the Free Software Foundation; either version 2
* of the License, or (at your option) any later version.
*
* This software is distributed on an "AS IS" basis, WITHOUT WARRANTY OF ANY
* KIND, either express or implied.
*
****************************************************************************/
/* [chunk_alloc] allows arrays (or any data) to be allocated in smaller chunks */
#include "chunk_alloc.h"
#include "panic.h"
//#define LOGF_ENABLE
#include "logf.h"
#ifndef MAX
#define MAX(a,b) ((a) > (b) ? (a) : (b))
#endif
#ifndef MIN
#define MIN(a,b) ((a) < (b) ? (a) : (b))
#endif
/*Note on offsets returned
* variable data will have variable offsets you need to
* store these as [chunk_alloc] doesn't keep track
* if you have a fixed size for each alloc you can do
* offset / sizeof(data) or index * sizeof(data) to convert
*/
chunk alloc add buflib_get_pinned and chunk caching Change-Id: Ia581656793b8ce9b80545705cfbba0fb225bb616
2023-01-16 06:14:15 +00:00
struct chunk_alloc
chunk_alloc chunk_alloc allows arrays (or any data) to be allocated in smaller chunks you have to save the indices.. variable data will have variable indices you need to store these as [chunk_alloc] doesn't keep track if you have a fixed size for each alloc you can do indice / sizeof(data) or index * sizeof(data) to convert Lots of debug stuff still in and it needs optimization User provides chunk_size and max_chunks max_chunks * struct chunk will be allocated at start with (1) chunk_size allocation initially alloc_chunk() with size = 0 shrinks the last allocation to the size of the data used add OOM checks on buflib_alloc -- oops move bytes available to the header -- less memory per chunk & better alignment keep track of the current in use chunk index -- should speed things up a bit Now allows: realloc chunk header larger allocations than chunk size reallocs smaller than existing will shrink the current array rather than alloc a new and copy data Comments welcome :) Change-Id: I8ed170eef73da95da19430a80b32e5debf0c8276
2023-01-08 06:42:27 +00:00
{
int handle; /* data handle of buflib allocated bytes */
size_t max_start_offset; /* start of last allocation */
};
chunk alloc add buflib_get_pinned and chunk caching Change-Id: Ia581656793b8ce9b80545705cfbba0fb225bb616
2023-01-16 06:14:15 +00:00
#define CHUNK_ARRSZ(n) (sizeof(struct chunk_alloc) * n)
chunk_alloc chunk_alloc allows arrays (or any data) to be allocated in smaller chunks you have to save the indices.. variable data will have variable indices you need to store these as [chunk_alloc] doesn't keep track if you have a fixed size for each alloc you can do indice / sizeof(data) or index * sizeof(data) to convert Lots of debug stuff still in and it needs optimization User provides chunk_size and max_chunks max_chunks * struct chunk will be allocated at start with (1) chunk_size allocation initially alloc_chunk() with size = 0 shrinks the last allocation to the size of the data used add OOM checks on buflib_alloc -- oops move bytes available to the header -- less memory per chunk & better alignment keep track of the current in use chunk index -- should speed things up a bit Now allows: realloc chunk header larger allocations than chunk size reallocs smaller than existing will shrink the current array rather than alloc a new and copy data Comments welcome :) Change-Id: I8ed170eef73da95da19430a80b32e5debf0c8276
2023-01-08 06:42:27 +00:00
chunk alloc add buflib_get_pinned and chunk caching Change-Id: Ia581656793b8ce9b80545705cfbba0fb225bb616
2023-01-16 06:14:15 +00:00
static struct chunk_alloc* get_chunk_array(struct buflib_context *ctx, int handle)
chunk_alloc chunk_alloc allows arrays (or any data) to be allocated in smaller chunks you have to save the indices.. variable data will have variable indices you need to store these as [chunk_alloc] doesn't keep track if you have a fixed size for each alloc you can do indice / sizeof(data) or index * sizeof(data) to convert Lots of debug stuff still in and it needs optimization User provides chunk_size and max_chunks max_chunks * struct chunk will be allocated at start with (1) chunk_size allocation initially alloc_chunk() with size = 0 shrinks the last allocation to the size of the data used add OOM checks on buflib_alloc -- oops move bytes available to the header -- less memory per chunk & better alignment keep track of the current in use chunk index -- should speed things up a bit Now allows: realloc chunk header larger allocations than chunk size reallocs smaller than existing will shrink the current array rather than alloc a new and copy data Comments welcome :) Change-Id: I8ed170eef73da95da19430a80b32e5debf0c8276
2023-01-08 06:42:27 +00:00
{
chunk alloc add buflib_get_pinned and chunk caching Change-Id: Ia581656793b8ce9b80545705cfbba0fb225bb616
2023-01-16 06:14:15 +00:00
return (struct chunk_alloc*)buflib_get_data_pinned(ctx, handle);
}
static void put_chunk_array(struct buflib_context *ctx, struct chunk_alloc *data)
{
buflib_put_data_pinned(ctx, data);
chunk_alloc chunk_alloc allows arrays (or any data) to be allocated in smaller chunks you have to save the indices.. variable data will have variable indices you need to store these as [chunk_alloc] doesn't keep track if you have a fixed size for each alloc you can do indice / sizeof(data) or index * sizeof(data) to convert Lots of debug stuff still in and it needs optimization User provides chunk_size and max_chunks max_chunks * struct chunk will be allocated at start with (1) chunk_size allocation initially alloc_chunk() with size = 0 shrinks the last allocation to the size of the data used add OOM checks on buflib_alloc -- oops move bytes available to the header -- less memory per chunk & better alignment keep track of the current in use chunk index -- should speed things up a bit Now allows: realloc chunk header larger allocations than chunk size reallocs smaller than existing will shrink the current array rather than alloc a new and copy data Comments welcome :) Change-Id: I8ed170eef73da95da19430a80b32e5debf0c8276
2023-01-08 06:42:27 +00:00
}
/* shrink or grow chunk allocation
* chunks greater than max_chunks will be freed
* new allocs will default to chunk_size
* previous or current chunk < max_chunks will NOT be changed
* Returns true on success false on failure
*/
bool chunk_realloc(struct chunk_alloc_header *hdr,
size_t chunk_size, size_t max_chunks)
{
struct buflib_context *ctx = hdr->context;
chunk alloc add buflib_get_pinned and chunk caching Change-Id: Ia581656793b8ce9b80545705cfbba0fb225bb616
2023-01-16 06:14:15 +00:00
struct chunk_alloc *new_chunk = NULL;
struct chunk_alloc *old_chunk;
chunk_alloc chunk_alloc allows arrays (or any data) to be allocated in smaller chunks you have to save the indices.. variable data will have variable indices you need to store these as [chunk_alloc] doesn't keep track if you have a fixed size for each alloc you can do indice / sizeof(data) or index * sizeof(data) to convert Lots of debug stuff still in and it needs optimization User provides chunk_size and max_chunks max_chunks * struct chunk will be allocated at start with (1) chunk_size allocation initially alloc_chunk() with size = 0 shrinks the last allocation to the size of the data used add OOM checks on buflib_alloc -- oops move bytes available to the header -- less memory per chunk & better alignment keep track of the current in use chunk index -- should speed things up a bit Now allows: realloc chunk header larger allocations than chunk size reallocs smaller than existing will shrink the current array rather than alloc a new and copy data Comments welcome :) Change-Id: I8ed170eef73da95da19430a80b32e5debf0c8276
2023-01-08 06:42:27 +00:00
size_t min_chunk = 1;
int new_handle = 0;
if (max_chunks > hdr->count) /* need room for more chunks */
{
new_handle = buflib_alloc(ctx, CHUNK_ARRSZ(max_chunks));
if (new_handle <= 0)
{
logf("%s Error OOM %ld chunks", __func__, max_chunks);
return false;
}
new_chunk = get_chunk_array(ctx, new_handle);
/* ensure all chunks data is zeroed, we depend on it */
memset(new_chunk, 0, CHUNK_ARRSZ(max_chunks));
[BUGFIX] chunk_alloc pinned buffer if there weren't previous chunks new buffer was pinned without being unpinned Change-Id: Ia45bc0eb67673e8df5154447d9116fcd4c147f6b
2023-02-16 20:40:40 +00:00
put_chunk_array(ctx, new_chunk);
chunk_alloc chunk_alloc allows arrays (or any data) to be allocated in smaller chunks you have to save the indices.. variable data will have variable indices you need to store these as [chunk_alloc] doesn't keep track if you have a fixed size for each alloc you can do indice / sizeof(data) or index * sizeof(data) to convert Lots of debug stuff still in and it needs optimization User provides chunk_size and max_chunks max_chunks * struct chunk will be allocated at start with (1) chunk_size allocation initially alloc_chunk() with size = 0 shrinks the last allocation to the size of the data used add OOM checks on buflib_alloc -- oops move bytes available to the header -- less memory per chunk & better alignment keep track of the current in use chunk index -- should speed things up a bit Now allows: realloc chunk header larger allocations than chunk size reallocs smaller than existing will shrink the current array rather than alloc a new and copy data Comments welcome :) Change-Id: I8ed170eef73da95da19430a80b32e5debf0c8276
2023-01-08 06:42:27 +00:00
}
if (hdr->chunk_handle > 0) /* handle existing chunk */
{
chunk alloc add buflib_get_pinned and chunk caching Change-Id: Ia581656793b8ce9b80545705cfbba0fb225bb616
2023-01-16 06:14:15 +00:00
logf("%s %ld chunks => %ld chunks", __func__, hdr->count, max_chunks);
chunk_alloc chunk_alloc allows arrays (or any data) to be allocated in smaller chunks you have to save the indices.. variable data will have variable indices you need to store these as [chunk_alloc] doesn't keep track if you have a fixed size for each alloc you can do indice / sizeof(data) or index * sizeof(data) to convert Lots of debug stuff still in and it needs optimization User provides chunk_size and max_chunks max_chunks * struct chunk will be allocated at start with (1) chunk_size allocation initially alloc_chunk() with size = 0 shrinks the last allocation to the size of the data used add OOM checks on buflib_alloc -- oops move bytes available to the header -- less memory per chunk & better alignment keep track of the current in use chunk index -- should speed things up a bit Now allows: realloc chunk header larger allocations than chunk size reallocs smaller than existing will shrink the current array rather than alloc a new and copy data Comments welcome :) Change-Id: I8ed170eef73da95da19430a80b32e5debf0c8276
2023-01-08 06:42:27 +00:00
old_chunk = get_chunk_array(ctx, hdr->chunk_handle);
[BUGFIX] chunk_alloc pinned buffer if there weren't previous chunks new buffer was pinned without being unpinned Change-Id: Ia45bc0eb67673e8df5154447d9116fcd4c147f6b
2023-02-16 20:40:40 +00:00
if (new_handle > 0) /* copy any valid old chunks to new */
chunk_alloc chunk_alloc allows arrays (or any data) to be allocated in smaller chunks you have to save the indices.. variable data will have variable indices you need to store these as [chunk_alloc] doesn't keep track if you have a fixed size for each alloc you can do indice / sizeof(data) or index * sizeof(data) to convert Lots of debug stuff still in and it needs optimization User provides chunk_size and max_chunks max_chunks * struct chunk will be allocated at start with (1) chunk_size allocation initially alloc_chunk() with size = 0 shrinks the last allocation to the size of the data used add OOM checks on buflib_alloc -- oops move bytes available to the header -- less memory per chunk & better alignment keep track of the current in use chunk index -- should speed things up a bit Now allows: realloc chunk header larger allocations than chunk size reallocs smaller than existing will shrink the current array rather than alloc a new and copy data Comments welcome :) Change-Id: I8ed170eef73da95da19430a80b32e5debf0c8276
2023-01-08 06:42:27 +00:00
{
min_chunk = MIN(max_chunks, hdr->current + 1);
logf("%s copying %ld chunks", __func__, min_chunk);
[BUGFIX] chunk_alloc pinned buffer if there weren't previous chunks new buffer was pinned without being unpinned Change-Id: Ia45bc0eb67673e8df5154447d9116fcd4c147f6b
2023-02-16 20:40:40 +00:00
new_chunk = get_chunk_array(ctx, new_handle);
chunk_alloc chunk_alloc allows arrays (or any data) to be allocated in smaller chunks you have to save the indices.. variable data will have variable indices you need to store these as [chunk_alloc] doesn't keep track if you have a fixed size for each alloc you can do indice / sizeof(data) or index * sizeof(data) to convert Lots of debug stuff still in and it needs optimization User provides chunk_size and max_chunks max_chunks * struct chunk will be allocated at start with (1) chunk_size allocation initially alloc_chunk() with size = 0 shrinks the last allocation to the size of the data used add OOM checks on buflib_alloc -- oops move bytes available to the header -- less memory per chunk & better alignment keep track of the current in use chunk index -- should speed things up a bit Now allows: realloc chunk header larger allocations than chunk size reallocs smaller than existing will shrink the current array rather than alloc a new and copy data Comments welcome :) Change-Id: I8ed170eef73da95da19430a80b32e5debf0c8276
2023-01-08 06:42:27 +00:00
memcpy(new_chunk, old_chunk, CHUNK_ARRSZ(min_chunk));
chunk alloc add buflib_get_pinned and chunk caching Change-Id: Ia581656793b8ce9b80545705cfbba0fb225bb616
2023-01-16 06:14:15 +00:00
put_chunk_array(ctx, new_chunk);
chunk_alloc chunk_alloc allows arrays (or any data) to be allocated in smaller chunks you have to save the indices.. variable data will have variable indices you need to store these as [chunk_alloc] doesn't keep track if you have a fixed size for each alloc you can do indice / sizeof(data) or index * sizeof(data) to convert Lots of debug stuff still in and it needs optimization User provides chunk_size and max_chunks max_chunks * struct chunk will be allocated at start with (1) chunk_size allocation initially alloc_chunk() with size = 0 shrinks the last allocation to the size of the data used add OOM checks on buflib_alloc -- oops move bytes available to the header -- less memory per chunk & better alignment keep track of the current in use chunk index -- should speed things up a bit Now allows: realloc chunk header larger allocations than chunk size reallocs smaller than existing will shrink the current array rather than alloc a new and copy data Comments welcome :) Change-Id: I8ed170eef73da95da19430a80b32e5debf0c8276
2023-01-08 06:42:27 +00:00
}
/* free any chunks that no longer fit */
for (size_t i = max_chunks; i <= hdr->current; i++)
{
logf("%s discarding chunk[%ld]", __func__, i);
buflib_free(ctx, old_chunk[i].handle);
}
chunk alloc add buflib_get_pinned and chunk caching Change-Id: Ia581656793b8ce9b80545705cfbba0fb225bb616
2023-01-16 06:14:15 +00:00
put_chunk_array(ctx, old_chunk);
chunk_alloc chunk_alloc allows arrays (or any data) to be allocated in smaller chunks you have to save the indices.. variable data will have variable indices you need to store these as [chunk_alloc] doesn't keep track if you have a fixed size for each alloc you can do indice / sizeof(data) or index * sizeof(data) to convert Lots of debug stuff still in and it needs optimization User provides chunk_size and max_chunks max_chunks * struct chunk will be allocated at start with (1) chunk_size allocation initially alloc_chunk() with size = 0 shrinks the last allocation to the size of the data used add OOM checks on buflib_alloc -- oops move bytes available to the header -- less memory per chunk & better alignment keep track of the current in use chunk index -- should speed things up a bit Now allows: realloc chunk header larger allocations than chunk size reallocs smaller than existing will shrink the current array rather than alloc a new and copy data Comments welcome :) Change-Id: I8ed170eef73da95da19430a80b32e5debf0c8276
2023-01-08 06:42:27 +00:00
if (max_chunks < hdr->count && max_chunks > 0)
{
logf("%s shrink existing chunk array", __func__);
min_chunk = max_chunks;
buflib_shrink(ctx, hdr->chunk_handle,
[BugFix] chunk_alloc pass NULL to buflib_shrink old_chunk has already been unpinned therefore the address could be incorrect NULL will ensure buflib_shrink uses the same start address Change-Id: I9371e4f8263c6e5bf769108a8558dc938d4c8b87
2023-02-22 15:55:10 +00:00
NULL, CHUNK_ARRSZ(max_chunks));
chunk_alloc chunk_alloc allows arrays (or any data) to be allocated in smaller chunks you have to save the indices.. variable data will have variable indices you need to store these as [chunk_alloc] doesn't keep track if you have a fixed size for each alloc you can do indice / sizeof(data) or index * sizeof(data) to convert Lots of debug stuff still in and it needs optimization User provides chunk_size and max_chunks max_chunks * struct chunk will be allocated at start with (1) chunk_size allocation initially alloc_chunk() with size = 0 shrinks the last allocation to the size of the data used add OOM checks on buflib_alloc -- oops move bytes available to the header -- less memory per chunk & better alignment keep track of the current in use chunk index -- should speed things up a bit Now allows: realloc chunk header larger allocations than chunk size reallocs smaller than existing will shrink the current array rather than alloc a new and copy data Comments welcome :) Change-Id: I8ed170eef73da95da19430a80b32e5debf0c8276
2023-01-08 06:42:27 +00:00
new_handle = hdr->chunk_handle;
}
else
{
logf("%s free existing chunk array", __func__);
buflib_free(ctx, hdr->chunk_handle); /* free old chunk array */
}
hdr->current = min_chunk - 1;
}
else
{
chunk alloc add buflib_get_pinned and chunk caching Change-Id: Ia581656793b8ce9b80545705cfbba0fb225bb616
2023-01-16 06:14:15 +00:00
logf("chunk_alloc_init %ld chunks", hdr->count);
chunk_alloc chunk_alloc allows arrays (or any data) to be allocated in smaller chunks you have to save the indices.. variable data will have variable indices you need to store these as [chunk_alloc] doesn't keep track if you have a fixed size for each alloc you can do indice / sizeof(data) or index * sizeof(data) to convert Lots of debug stuff still in and it needs optimization User provides chunk_size and max_chunks max_chunks * struct chunk will be allocated at start with (1) chunk_size allocation initially alloc_chunk() with size = 0 shrinks the last allocation to the size of the data used add OOM checks on buflib_alloc -- oops move bytes available to the header -- less memory per chunk & better alignment keep track of the current in use chunk index -- should speed things up a bit Now allows: realloc chunk header larger allocations than chunk size reallocs smaller than existing will shrink the current array rather than alloc a new and copy data Comments welcome :) Change-Id: I8ed170eef73da95da19430a80b32e5debf0c8276
2023-01-08 06:42:27 +00:00
}
chunk alloc add buflib_get_pinned and chunk caching Change-Id: Ia581656793b8ce9b80545705cfbba0fb225bb616
2023-01-16 06:14:15 +00:00
hdr->cached_chunk.handle = 0; /* reset last chunk to force new lookup */
chunk_alloc chunk_alloc allows arrays (or any data) to be allocated in smaller chunks you have to save the indices.. variable data will have variable indices you need to store these as [chunk_alloc] doesn't keep track if you have a fixed size for each alloc you can do indice / sizeof(data) or index * sizeof(data) to convert Lots of debug stuff still in and it needs optimization User provides chunk_size and max_chunks max_chunks * struct chunk will be allocated at start with (1) chunk_size allocation initially alloc_chunk() with size = 0 shrinks the last allocation to the size of the data used add OOM checks on buflib_alloc -- oops move bytes available to the header -- less memory per chunk & better alignment keep track of the current in use chunk index -- should speed things up a bit Now allows: realloc chunk header larger allocations than chunk size reallocs smaller than existing will shrink the current array rather than alloc a new and copy data Comments welcome :) Change-Id: I8ed170eef73da95da19430a80b32e5debf0c8276
2023-01-08 06:42:27 +00:00
hdr->chunk_handle = new_handle;
hdr->chunk_size = chunk_size;
hdr->count = max_chunks;
return true;
}
/* frees all allocations */
void chunk_alloc_free(struct chunk_alloc_header *hdr)
{
logf("%s freeing %ld chunks", __func__, hdr->count);
chunk_realloc(hdr, 0, 0);
}
/* initialize chunk allocator
* chunk_size specifies initial size of each chunk
* a single allocation CAN be larger than this
* max_chunks * chunk_size is the total expected size of the buffer
* more data will not be allocated once all chunks used
* Returns true on success or false on failure
*/
bool chunk_alloc_init(struct chunk_alloc_header *hdr,
struct buflib_context *ctx,
size_t chunk_size, size_t max_chunks)
{
/* initialize header */
chunk alloc add buflib_get_pinned and chunk caching Change-Id: Ia581656793b8ce9b80545705cfbba0fb225bb616
2023-01-16 06:14:15 +00:00
memset(hdr, 0, sizeof(struct chunk_alloc_header));
chunk_alloc chunk_alloc allows arrays (or any data) to be allocated in smaller chunks you have to save the indices.. variable data will have variable indices you need to store these as [chunk_alloc] doesn't keep track if you have a fixed size for each alloc you can do indice / sizeof(data) or index * sizeof(data) to convert Lots of debug stuff still in and it needs optimization User provides chunk_size and max_chunks max_chunks * struct chunk will be allocated at start with (1) chunk_size allocation initially alloc_chunk() with size = 0 shrinks the last allocation to the size of the data used add OOM checks on buflib_alloc -- oops move bytes available to the header -- less memory per chunk & better alignment keep track of the current in use chunk index -- should speed things up a bit Now allows: realloc chunk header larger allocations than chunk size reallocs smaller than existing will shrink the current array rather than alloc a new and copy data Comments welcome :) Change-Id: I8ed170eef73da95da19430a80b32e5debf0c8276
2023-01-08 06:42:27 +00:00
hdr->context = ctx;
return chunk_realloc(hdr, chunk_size, max_chunks);
}
/* shrink current chunk to size used */
chunk alloc add buflib_get_pinned and chunk caching Change-Id: Ia581656793b8ce9b80545705cfbba0fb225bb616
2023-01-16 06:14:15 +00:00
static void finalize(struct chunk_alloc_header *hdr, struct chunk_alloc *chunk_array)
chunk_alloc chunk_alloc allows arrays (or any data) to be allocated in smaller chunks you have to save the indices.. variable data will have variable indices you need to store these as [chunk_alloc] doesn't keep track if you have a fixed size for each alloc you can do indice / sizeof(data) or index * sizeof(data) to convert Lots of debug stuff still in and it needs optimization User provides chunk_size and max_chunks max_chunks * struct chunk will be allocated at start with (1) chunk_size allocation initially alloc_chunk() with size = 0 shrinks the last allocation to the size of the data used add OOM checks on buflib_alloc -- oops move bytes available to the header -- less memory per chunk & better alignment keep track of the current in use chunk index -- should speed things up a bit Now allows: realloc chunk header larger allocations than chunk size reallocs smaller than existing will shrink the current array rather than alloc a new and copy data Comments welcome :) Change-Id: I8ed170eef73da95da19430a80b32e5debf0c8276
2023-01-08 06:42:27 +00:00
{
chunk alloc add buflib_get_pinned and chunk caching Change-Id: Ia581656793b8ce9b80545705cfbba0fb225bb616
2023-01-16 06:14:15 +00:00
/* Note calling functions check if chunk_bytes_free > 0 */
chunk_alloc chunk_alloc allows arrays (or any data) to be allocated in smaller chunks you have to save the indices.. variable data will have variable indices you need to store these as [chunk_alloc] doesn't keep track if you have a fixed size for each alloc you can do indice / sizeof(data) or index * sizeof(data) to convert Lots of debug stuff still in and it needs optimization User provides chunk_size and max_chunks max_chunks * struct chunk will be allocated at start with (1) chunk_size allocation initially alloc_chunk() with size = 0 shrinks the last allocation to the size of the data used add OOM checks on buflib_alloc -- oops move bytes available to the header -- less memory per chunk & better alignment keep track of the current in use chunk index -- should speed things up a bit Now allows: realloc chunk header larger allocations than chunk size reallocs smaller than existing will shrink the current array rather than alloc a new and copy data Comments welcome :) Change-Id: I8ed170eef73da95da19430a80b32e5debf0c8276
2023-01-08 06:42:27 +00:00
size_t idx = hdr->current;
if (idx >= hdr->count)
return;
int handle = chunk_array[idx].handle;
struct buflib_context *ctx = hdr->context;
hdr->chunk_bytes_total -= hdr->chunk_bytes_free;
hdr->chunk_bytes_free = 0;
buflib_shrink use NULL to signal start isn't changing Change-Id: Id3e86d3860b8ed860dc6dcbc394b1b8f9f3274b5
2023-01-13 01:52:29 +00:00
buflib_shrink(ctx, handle, NULL, hdr->chunk_bytes_total);
chunk_alloc chunk_alloc allows arrays (or any data) to be allocated in smaller chunks you have to save the indices.. variable data will have variable indices you need to store these as [chunk_alloc] doesn't keep track if you have a fixed size for each alloc you can do indice / sizeof(data) or index * sizeof(data) to convert Lots of debug stuff still in and it needs optimization User provides chunk_size and max_chunks max_chunks * struct chunk will be allocated at start with (1) chunk_size allocation initially alloc_chunk() with size = 0 shrinks the last allocation to the size of the data used add OOM checks on buflib_alloc -- oops move bytes available to the header -- less memory per chunk & better alignment keep track of the current in use chunk index -- should speed things up a bit Now allows: realloc chunk header larger allocations than chunk size reallocs smaller than existing will shrink the current array rather than alloc a new and copy data Comments welcome :) Change-Id: I8ed170eef73da95da19430a80b32e5debf0c8276
2023-01-08 06:42:27 +00:00
logf("%s shrink hdr idx[%ld] offset[%ld]: new size: %ld",
__func__, idx, chunk_array[idx].max_start_offset, hdr->chunk_bytes_total);
}
/* shrink current chunk to size used */
void chunk_alloc_finalize(struct chunk_alloc_header *hdr)
{
if (hdr->chunk_bytes_free > 0)
{
chunk alloc add buflib_get_pinned and chunk caching Change-Id: Ia581656793b8ce9b80545705cfbba0fb225bb616
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struct chunk_alloc *chunk;
chunk = get_chunk_array(hdr->context, hdr->chunk_handle);
chunk_alloc chunk_alloc allows arrays (or any data) to be allocated in smaller chunks you have to save the indices.. variable data will have variable indices you need to store these as [chunk_alloc] doesn't keep track if you have a fixed size for each alloc you can do indice / sizeof(data) or index * sizeof(data) to convert Lots of debug stuff still in and it needs optimization User provides chunk_size and max_chunks max_chunks * struct chunk will be allocated at start with (1) chunk_size allocation initially alloc_chunk() with size = 0 shrinks the last allocation to the size of the data used add OOM checks on buflib_alloc -- oops move bytes available to the header -- less memory per chunk & better alignment keep track of the current in use chunk index -- should speed things up a bit Now allows: realloc chunk header larger allocations than chunk size reallocs smaller than existing will shrink the current array rather than alloc a new and copy data Comments welcome :) Change-Id: I8ed170eef73da95da19430a80b32e5debf0c8276
2023-01-08 06:42:27 +00:00
finalize(hdr, chunk);
chunk alloc add buflib_get_pinned and chunk caching Change-Id: Ia581656793b8ce9b80545705cfbba0fb225bb616
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put_chunk_array(hdr->context, chunk);
chunk_alloc chunk_alloc allows arrays (or any data) to be allocated in smaller chunks you have to save the indices.. variable data will have variable indices you need to store these as [chunk_alloc] doesn't keep track if you have a fixed size for each alloc you can do indice / sizeof(data) or index * sizeof(data) to convert Lots of debug stuff still in and it needs optimization User provides chunk_size and max_chunks max_chunks * struct chunk will be allocated at start with (1) chunk_size allocation initially alloc_chunk() with size = 0 shrinks the last allocation to the size of the data used add OOM checks on buflib_alloc -- oops move bytes available to the header -- less memory per chunk & better alignment keep track of the current in use chunk index -- should speed things up a bit Now allows: realloc chunk header larger allocations than chunk size reallocs smaller than existing will shrink the current array rather than alloc a new and copy data Comments welcome :) Change-Id: I8ed170eef73da95da19430a80b32e5debf0c8276
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}
}
/* allocates from current chunk if size > bytes remaining
* current chunk shrinks to size used and a new chunk is allocated
* returns virtual offset on success or CHUNK_ALLOC_INVALID on error
*/
size_t chunk_alloc(struct chunk_alloc_header *hdr, size_t size)
{
chunk alloc add buflib_get_pinned and chunk caching Change-Id: Ia581656793b8ce9b80545705cfbba0fb225bb616
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size_t virtual_offset = CHUNK_ALLOC_INVALID;
chunk_alloc chunk_alloc allows arrays (or any data) to be allocated in smaller chunks you have to save the indices.. variable data will have variable indices you need to store these as [chunk_alloc] doesn't keep track if you have a fixed size for each alloc you can do indice / sizeof(data) or index * sizeof(data) to convert Lots of debug stuff still in and it needs optimization User provides chunk_size and max_chunks max_chunks * struct chunk will be allocated at start with (1) chunk_size allocation initially alloc_chunk() with size = 0 shrinks the last allocation to the size of the data used add OOM checks on buflib_alloc -- oops move bytes available to the header -- less memory per chunk & better alignment keep track of the current in use chunk index -- should speed things up a bit Now allows: realloc chunk header larger allocations than chunk size reallocs smaller than existing will shrink the current array rather than alloc a new and copy data Comments welcome :) Change-Id: I8ed170eef73da95da19430a80b32e5debf0c8276
2023-01-08 06:42:27 +00:00
size_t idx = hdr->current;
int handle = hdr->chunk_handle;
struct buflib_context *ctx = hdr->context;
chunk alloc add buflib_get_pinned and chunk caching Change-Id: Ia581656793b8ce9b80545705cfbba0fb225bb616
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struct chunk_alloc *chunk = get_chunk_array(ctx, handle);
chunk_alloc chunk_alloc allows arrays (or any data) to be allocated in smaller chunks you have to save the indices.. variable data will have variable indices you need to store these as [chunk_alloc] doesn't keep track if you have a fixed size for each alloc you can do indice / sizeof(data) or index * sizeof(data) to convert Lots of debug stuff still in and it needs optimization User provides chunk_size and max_chunks max_chunks * struct chunk will be allocated at start with (1) chunk_size allocation initially alloc_chunk() with size = 0 shrinks the last allocation to the size of the data used add OOM checks on buflib_alloc -- oops move bytes available to the header -- less memory per chunk & better alignment keep track of the current in use chunk index -- should speed things up a bit Now allows: realloc chunk header larger allocations than chunk size reallocs smaller than existing will shrink the current array rather than alloc a new and copy data Comments welcome :) Change-Id: I8ed170eef73da95da19430a80b32e5debf0c8276
2023-01-08 06:42:27 +00:00
while (size > 0)
{
if (idx >= hdr->count)
{
logf("%s Error OOM -- out of chunks", __func__);
chunk alloc add buflib_get_pinned and chunk caching Change-Id: Ia581656793b8ce9b80545705cfbba0fb225bb616
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break; /* Out of chunks */
chunk_alloc chunk_alloc allows arrays (or any data) to be allocated in smaller chunks you have to save the indices.. variable data will have variable indices you need to store these as [chunk_alloc] doesn't keep track if you have a fixed size for each alloc you can do indice / sizeof(data) or index * sizeof(data) to convert Lots of debug stuff still in and it needs optimization User provides chunk_size and max_chunks max_chunks * struct chunk will be allocated at start with (1) chunk_size allocation initially alloc_chunk() with size = 0 shrinks the last allocation to the size of the data used add OOM checks on buflib_alloc -- oops move bytes available to the header -- less memory per chunk & better alignment keep track of the current in use chunk index -- should speed things up a bit Now allows: realloc chunk header larger allocations than chunk size reallocs smaller than existing will shrink the current array rather than alloc a new and copy data Comments welcome :) Change-Id: I8ed170eef73da95da19430a80b32e5debf0c8276
2023-01-08 06:42:27 +00:00
}
hdr->current = idx;
if(chunk[idx].handle <= 0) /* need to make an new allocation */
{
size_t new_alloc_size = MAX(size, hdr->chunk_size);
chunk[idx].handle = buflib_alloc(ctx, new_alloc_size);
if (chunk[idx].handle <= 0)
{
logf("%s Error OOM", __func__);
chunk alloc add buflib_get_pinned and chunk caching Change-Id: Ia581656793b8ce9b80545705cfbba0fb225bb616
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break; /* OOM */
chunk_alloc chunk_alloc allows arrays (or any data) to be allocated in smaller chunks you have to save the indices.. variable data will have variable indices you need to store these as [chunk_alloc] doesn't keep track if you have a fixed size for each alloc you can do indice / sizeof(data) or index * sizeof(data) to convert Lots of debug stuff still in and it needs optimization User provides chunk_size and max_chunks max_chunks * struct chunk will be allocated at start with (1) chunk_size allocation initially alloc_chunk() with size = 0 shrinks the last allocation to the size of the data used add OOM checks on buflib_alloc -- oops move bytes available to the header -- less memory per chunk & better alignment keep track of the current in use chunk index -- should speed things up a bit Now allows: realloc chunk header larger allocations than chunk size reallocs smaller than existing will shrink the current array rather than alloc a new and copy data Comments welcome :) Change-Id: I8ed170eef73da95da19430a80b32e5debf0c8276
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}
hdr->chunk_bytes_total = new_alloc_size;
hdr->chunk_bytes_free = new_alloc_size;
chunk[idx].max_start_offset =
(idx > 0 ? (chunk[idx - 1].max_start_offset) : 0);
logf("%s New alloc hdr idx[%ld] offset[%ld]: available: %ld",
__func__, idx, chunk[idx].max_start_offset, new_alloc_size);
}
if(size <= hdr->chunk_bytes_free) /* request will fit */
{
chunk alloc add buflib_get_pinned and chunk caching Change-Id: Ia581656793b8ce9b80545705cfbba0fb225bb616
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virtual_offset = chunk[idx].max_start_offset;
chunk_alloc chunk_alloc allows arrays (or any data) to be allocated in smaller chunks you have to save the indices.. variable data will have variable indices you need to store these as [chunk_alloc] doesn't keep track if you have a fixed size for each alloc you can do indice / sizeof(data) or index * sizeof(data) to convert Lots of debug stuff still in and it needs optimization User provides chunk_size and max_chunks max_chunks * struct chunk will be allocated at start with (1) chunk_size allocation initially alloc_chunk() with size = 0 shrinks the last allocation to the size of the data used add OOM checks on buflib_alloc -- oops move bytes available to the header -- less memory per chunk & better alignment keep track of the current in use chunk index -- should speed things up a bit Now allows: realloc chunk header larger allocations than chunk size reallocs smaller than existing will shrink the current array rather than alloc a new and copy data Comments welcome :) Change-Id: I8ed170eef73da95da19430a80b32e5debf0c8276
2023-01-08 06:42:27 +00:00
chunk[idx].max_start_offset += size;
hdr->chunk_bytes_free -= size;
chunk alloc add buflib_get_pinned and chunk caching Change-Id: Ia581656793b8ce9b80545705cfbba0fb225bb616
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if (hdr->cached_chunk.handle == chunk[idx].handle)
hdr->cached_chunk.max_offset = chunk[idx].max_start_offset;
chunk_alloc chunk_alloc allows arrays (or any data) to be allocated in smaller chunks you have to save the indices.. variable data will have variable indices you need to store these as [chunk_alloc] doesn't keep track if you have a fixed size for each alloc you can do indice / sizeof(data) or index * sizeof(data) to convert Lots of debug stuff still in and it needs optimization User provides chunk_size and max_chunks max_chunks * struct chunk will be allocated at start with (1) chunk_size allocation initially alloc_chunk() with size = 0 shrinks the last allocation to the size of the data used add OOM checks on buflib_alloc -- oops move bytes available to the header -- less memory per chunk & better alignment keep track of the current in use chunk index -- should speed things up a bit Now allows: realloc chunk header larger allocations than chunk size reallocs smaller than existing will shrink the current array rather than alloc a new and copy data Comments welcome :) Change-Id: I8ed170eef73da95da19430a80b32e5debf0c8276
2023-01-08 06:42:27 +00:00
/*logf("%s hdr idx[%ld] offset[%ld] size: %ld",
chunk alloc add buflib_get_pinned and chunk caching Change-Id: Ia581656793b8ce9b80545705cfbba0fb225bb616
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__func__, idx, offset, size);*/
chunk_alloc chunk_alloc allows arrays (or any data) to be allocated in smaller chunks you have to save the indices.. variable data will have variable indices you need to store these as [chunk_alloc] doesn't keep track if you have a fixed size for each alloc you can do indice / sizeof(data) or index * sizeof(data) to convert Lots of debug stuff still in and it needs optimization User provides chunk_size and max_chunks max_chunks * struct chunk will be allocated at start with (1) chunk_size allocation initially alloc_chunk() with size = 0 shrinks the last allocation to the size of the data used add OOM checks on buflib_alloc -- oops move bytes available to the header -- less memory per chunk & better alignment keep track of the current in use chunk index -- should speed things up a bit Now allows: realloc chunk header larger allocations than chunk size reallocs smaller than existing will shrink the current array rather than alloc a new and copy data Comments welcome :) Change-Id: I8ed170eef73da95da19430a80b32e5debf0c8276
2023-01-08 06:42:27 +00:00
chunk alloc add buflib_get_pinned and chunk caching Change-Id: Ia581656793b8ce9b80545705cfbba0fb225bb616
2023-01-16 06:14:15 +00:00
break; /* Success */
chunk_alloc chunk_alloc allows arrays (or any data) to be allocated in smaller chunks you have to save the indices.. variable data will have variable indices you need to store these as [chunk_alloc] doesn't keep track if you have a fixed size for each alloc you can do indice / sizeof(data) or index * sizeof(data) to convert Lots of debug stuff still in and it needs optimization User provides chunk_size and max_chunks max_chunks * struct chunk will be allocated at start with (1) chunk_size allocation initially alloc_chunk() with size = 0 shrinks the last allocation to the size of the data used add OOM checks on buflib_alloc -- oops move bytes available to the header -- less memory per chunk & better alignment keep track of the current in use chunk index -- should speed things up a bit Now allows: realloc chunk header larger allocations than chunk size reallocs smaller than existing will shrink the current array rather than alloc a new and copy data Comments welcome :) Change-Id: I8ed170eef73da95da19430a80b32e5debf0c8276
2023-01-08 06:42:27 +00:00
}
else if (hdr->chunk_bytes_free > 0) /* shrink the current chunk */
{
finalize(hdr, chunk);
}
idx++;
}
chunk alloc add buflib_get_pinned and chunk caching Change-Id: Ia581656793b8ce9b80545705cfbba0fb225bb616
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put_chunk_array(ctx, chunk);
return virtual_offset;
chunk_alloc chunk_alloc allows arrays (or any data) to be allocated in smaller chunks you have to save the indices.. variable data will have variable indices you need to store these as [chunk_alloc] doesn't keep track if you have a fixed size for each alloc you can do indice / sizeof(data) or index * sizeof(data) to convert Lots of debug stuff still in and it needs optimization User provides chunk_size and max_chunks max_chunks * struct chunk will be allocated at start with (1) chunk_size allocation initially alloc_chunk() with size = 0 shrinks the last allocation to the size of the data used add OOM checks on buflib_alloc -- oops move bytes available to the header -- less memory per chunk & better alignment keep track of the current in use chunk index -- should speed things up a bit Now allows: realloc chunk header larger allocations than chunk size reallocs smaller than existing will shrink the current array rather than alloc a new and copy data Comments welcome :) Change-Id: I8ed170eef73da95da19430a80b32e5debf0c8276
2023-01-08 06:42:27 +00:00
}
chunk alloc add buflib_get_pinned and chunk caching Change-Id: Ia581656793b8ce9b80545705cfbba0fb225bb616
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/* retrieves chunk given virtual offset
* returns actual offset
*/
static size_t chunk_get_at_offset(struct chunk_alloc_header *hdr, size_t offset)
chunk_alloc chunk_alloc allows arrays (or any data) to be allocated in smaller chunks you have to save the indices.. variable data will have variable indices you need to store these as [chunk_alloc] doesn't keep track if you have a fixed size for each alloc you can do indice / sizeof(data) or index * sizeof(data) to convert Lots of debug stuff still in and it needs optimization User provides chunk_size and max_chunks max_chunks * struct chunk will be allocated at start with (1) chunk_size allocation initially alloc_chunk() with size = 0 shrinks the last allocation to the size of the data used add OOM checks on buflib_alloc -- oops move bytes available to the header -- less memory per chunk & better alignment keep track of the current in use chunk index -- should speed things up a bit Now allows: realloc chunk header larger allocations than chunk size reallocs smaller than existing will shrink the current array rather than alloc a new and copy data Comments welcome :) Change-Id: I8ed170eef73da95da19430a80b32e5debf0c8276
2023-01-08 06:42:27 +00:00
{
chunk alloc add buflib_get_pinned and chunk caching Change-Id: Ia581656793b8ce9b80545705cfbba0fb225bb616
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if ((hdr->cached_chunk.handle > 0)
&& (offset >= hdr->cached_chunk.min_offset)
&& (offset < hdr->cached_chunk.max_offset))
{
/* convert virtual offset to real internal offset */
return offset - hdr->cached_chunk.min_offset;
}
/* chunk isn't cached perform new lookup */
struct chunk_alloc *chunk = get_chunk_array(hdr->context, hdr->chunk_handle);
logf("%s search for offset[%ld]", __func__, offset);
for (size_t idx = hdr->current; idx < hdr->count; idx--)
chunk_alloc chunk_alloc allows arrays (or any data) to be allocated in smaller chunks you have to save the indices.. variable data will have variable indices you need to store these as [chunk_alloc] doesn't keep track if you have a fixed size for each alloc you can do indice / sizeof(data) or index * sizeof(data) to convert Lots of debug stuff still in and it needs optimization User provides chunk_size and max_chunks max_chunks * struct chunk will be allocated at start with (1) chunk_size allocation initially alloc_chunk() with size = 0 shrinks the last allocation to the size of the data used add OOM checks on buflib_alloc -- oops move bytes available to the header -- less memory per chunk & better alignment keep track of the current in use chunk index -- should speed things up a bit Now allows: realloc chunk header larger allocations than chunk size reallocs smaller than existing will shrink the current array rather than alloc a new and copy data Comments welcome :) Change-Id: I8ed170eef73da95da19430a80b32e5debf0c8276
2023-01-08 06:42:27 +00:00
{
chunk alloc add buflib_get_pinned and chunk caching Change-Id: Ia581656793b8ce9b80545705cfbba0fb225bb616
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size_t min_offset = (idx == 0 ? 0 : chunk[idx - 1].max_start_offset);
if (offset < chunk[idx].max_start_offset && offset >= min_offset)
chunk_alloc chunk_alloc allows arrays (or any data) to be allocated in smaller chunks you have to save the indices.. variable data will have variable indices you need to store these as [chunk_alloc] doesn't keep track if you have a fixed size for each alloc you can do indice / sizeof(data) or index * sizeof(data) to convert Lots of debug stuff still in and it needs optimization User provides chunk_size and max_chunks max_chunks * struct chunk will be allocated at start with (1) chunk_size allocation initially alloc_chunk() with size = 0 shrinks the last allocation to the size of the data used add OOM checks on buflib_alloc -- oops move bytes available to the header -- less memory per chunk & better alignment keep track of the current in use chunk index -- should speed things up a bit Now allows: realloc chunk header larger allocations than chunk size reallocs smaller than existing will shrink the current array rather than alloc a new and copy data Comments welcome :) Change-Id: I8ed170eef73da95da19430a80b32e5debf0c8276
2023-01-08 06:42:27 +00:00
{
chunk alloc add buflib_get_pinned and chunk caching Change-Id: Ia581656793b8ce9b80545705cfbba0fb225bb616
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logf("%s found hdr idx[%ld] min offset[%ld] max offset[%ld]",
__func__, idx, min_offset, chunk[idx].max_start_offset);
/* store found chunk */
hdr->cached_chunk.handle = chunk[idx].handle;
hdr->cached_chunk.max_offset = chunk[idx].max_start_offset;
hdr->cached_chunk.min_offset = min_offset;
put_chunk_array(hdr->context, chunk);
/* convert virtual offset to real internal offset */
return offset - hdr->cached_chunk.min_offset;
chunk_alloc chunk_alloc allows arrays (or any data) to be allocated in smaller chunks you have to save the indices.. variable data will have variable indices you need to store these as [chunk_alloc] doesn't keep track if you have a fixed size for each alloc you can do indice / sizeof(data) or index * sizeof(data) to convert Lots of debug stuff still in and it needs optimization User provides chunk_size and max_chunks max_chunks * struct chunk will be allocated at start with (1) chunk_size allocation initially alloc_chunk() with size = 0 shrinks the last allocation to the size of the data used add OOM checks on buflib_alloc -- oops move bytes available to the header -- less memory per chunk & better alignment keep track of the current in use chunk index -- should speed things up a bit Now allows: realloc chunk header larger allocations than chunk size reallocs smaller than existing will shrink the current array rather than alloc a new and copy data Comments welcome :) Change-Id: I8ed170eef73da95da19430a80b32e5debf0c8276
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}
}
panicf("%s Error offset %d does not exist", __func__, (unsigned int)offset);
return CHUNK_ALLOC_INVALID;
}
/* get data - buffer chunk can't be moved while pinned
* multiple calls will up pin count so put should be called for each
* Returns data at offset
*/
void* chunk_get_data(struct chunk_alloc_header *hdr, size_t offset)
{
chunk alloc add buflib_get_pinned and chunk caching Change-Id: Ia581656793b8ce9b80545705cfbba0fb225bb616
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size_t real = chunk_get_at_offset(hdr, offset);
logf("%s offset: %ld real: %ld", __func__, offset, real);
return buflib_get_data_pinned(hdr->context, hdr->cached_chunk.handle) + real;
chunk_alloc chunk_alloc allows arrays (or any data) to be allocated in smaller chunks you have to save the indices.. variable data will have variable indices you need to store these as [chunk_alloc] doesn't keep track if you have a fixed size for each alloc you can do indice / sizeof(data) or index * sizeof(data) to convert Lots of debug stuff still in and it needs optimization User provides chunk_size and max_chunks max_chunks * struct chunk will be allocated at start with (1) chunk_size allocation initially alloc_chunk() with size = 0 shrinks the last allocation to the size of the data used add OOM checks on buflib_alloc -- oops move bytes available to the header -- less memory per chunk & better alignment keep track of the current in use chunk index -- should speed things up a bit Now allows: realloc chunk header larger allocations than chunk size reallocs smaller than existing will shrink the current array rather than alloc a new and copy data Comments welcome :) Change-Id: I8ed170eef73da95da19430a80b32e5debf0c8276
2023-01-08 06:42:27 +00:00
}
/* release a pinned buffer, chunk can't be moved till pin count == 0 */
chunk alloc add buflib_get_pinned and chunk caching Change-Id: Ia581656793b8ce9b80545705cfbba0fb225bb616
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void chunk_put_data(struct chunk_alloc_header *hdr, void* data, size_t offset)
chunk_alloc chunk_alloc allows arrays (or any data) to be allocated in smaller chunks you have to save the indices.. variable data will have variable indices you need to store these as [chunk_alloc] doesn't keep track if you have a fixed size for each alloc you can do indice / sizeof(data) or index * sizeof(data) to convert Lots of debug stuff still in and it needs optimization User provides chunk_size and max_chunks max_chunks * struct chunk will be allocated at start with (1) chunk_size allocation initially alloc_chunk() with size = 0 shrinks the last allocation to the size of the data used add OOM checks on buflib_alloc -- oops move bytes available to the header -- less memory per chunk & better alignment keep track of the current in use chunk index -- should speed things up a bit Now allows: realloc chunk header larger allocations than chunk size reallocs smaller than existing will shrink the current array rather than alloc a new and copy data Comments welcome :) Change-Id: I8ed170eef73da95da19430a80b32e5debf0c8276
2023-01-08 06:42:27 +00:00
{
chunk alloc add buflib_get_pinned and chunk caching Change-Id: Ia581656793b8ce9b80545705cfbba0fb225bb616
2023-01-16 06:14:15 +00:00
size_t real = chunk_get_at_offset(hdr, offset);
buflib_put_data_pinned(hdr->context, data - real);
chunk_alloc chunk_alloc allows arrays (or any data) to be allocated in smaller chunks you have to save the indices.. variable data will have variable indices you need to store these as [chunk_alloc] doesn't keep track if you have a fixed size for each alloc you can do indice / sizeof(data) or index * sizeof(data) to convert Lots of debug stuff still in and it needs optimization User provides chunk_size and max_chunks max_chunks * struct chunk will be allocated at start with (1) chunk_size allocation initially alloc_chunk() with size = 0 shrinks the last allocation to the size of the data used add OOM checks on buflib_alloc -- oops move bytes available to the header -- less memory per chunk & better alignment keep track of the current in use chunk index -- should speed things up a bit Now allows: realloc chunk header larger allocations than chunk size reallocs smaller than existing will shrink the current array rather than alloc a new and copy data Comments welcome :) Change-Id: I8ed170eef73da95da19430a80b32e5debf0c8276
2023-01-08 06:42:27 +00:00
}
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