forked from len0rd/rockbox
7ab237b025
This should catch the case of buffer misuse which results in corrupted cookie of next allocation. The check is performed on move_block() so it may be a bit late. There is buflib_check_valid() provided which checks the integrity of all cookies for given context. On DEBUG build with --sdl-thread this check is carried out for core_ctx on every context switch to catch problems earlier. Change-Id: I999d4576084592394e3dbd3bdf0f32935ff5f601 Reviewed-on: http://gerrit.rockbox.org/711 Reviewed-by: Thomas Martitz <kugel@rockbox.org>
52 lines
1.5 KiB
C
52 lines
1.5 KiB
C
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#ifndef __CORE_ALLOC_H__
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#define __CORE_ALLOC_H__
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#include <string.h>
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#include <stdbool.h>
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#include "config.h"
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#include "buflib.h"
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/* All functions below are wrappers for functions in buflib.h, except
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* they have a predefined context
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*/
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void core_allocator_init(void) INIT_ATTR;
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int core_alloc(const char* name, size_t size);
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int core_alloc_ex(const char* name, size_t size, struct buflib_callbacks *ops);
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int core_alloc_maximum(const char* name, size_t *size, struct buflib_callbacks *ops);
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bool core_shrink(int handle, void* new_start, size_t new_size);
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int core_free(int handle);
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size_t core_available(void);
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size_t core_allocatable(void);
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#ifdef DEBUG
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void core_check_valid(void);
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#endif
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/* DO NOT ADD wrappers for buflib_buffer_out/in. They do not call
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* the move callbacks and are therefore unsafe in the core */
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#ifdef BUFLIB_DEBUG_BLOCKS
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void core_print_allocs(void (*print)(const char*));
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void core_print_blocks(void (*print)(const char*));
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#endif
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#ifdef BUFLIB_DEBUG_BLOCK_SINGLE
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int core_get_num_blocks(void);
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void core_print_block_at(int block_num, char* buf, size_t bufsize);
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#endif
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/* frees the debug test alloc created at initialization,
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* since this is the first any further alloc should force a compaction run */
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bool core_test_free(void);
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static inline void* core_get_data(int handle)
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{
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extern struct buflib_context core_ctx;
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return buflib_get_data(&core_ctx, handle);
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}
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static inline const char* core_get_name(int handle)
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{
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extern struct buflib_context core_ctx;
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return buflib_get_name(&core_ctx, handle);
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}
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#endif /* __CORE_ALLOC_H__ */
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