79e6b0e0f6
As of today <zephyr/zephyr.h> is 100% equivalent to <zephyr/kernel.h>. This patch proposes to then include <zephyr/kernel.h> instead of <zephyr/zephyr.h> since it is more clear that you are including the Kernel APIs and (probably) nothing else. <zephyr/zephyr.h> sounds like a catch-all header that may be confusing. Most applications need to include a bunch of other things to compile, e.g. driver headers or subsystem headers like BT, logging, etc. The idea of a catch-all header in Zephyr is probably not feasible anyway. Reason is that Zephyr is not a library, like it could be for example `libpython`. Zephyr provides many utilities nowadays: a kernel, drivers, subsystems, etc and things will likely grow. A catch-all header would be massive, difficult to keep up-to-date. It is also likely that an application will only build a small subset. Note that subsystem-level headers may use a catch-all approach to make things easier, though. NOTE: This patch is **NOT** removing the header, just removing its usage in-tree. I'd advocate for its deprecation (add a #warning on it), but I understand many people will have concerns. Signed-off-by: Gerard Marull-Paretas <gerard.marull@nordicsemi.no>
157 lines
3.2 KiB
C
157 lines
3.2 KiB
C
/*
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* Copyright (c) 2018 Intel Corporation
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*
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* SPDX-License-Identifier: Apache-2.0
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*/
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#include <stdlib.h>
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#include <zephyr/kernel.h>
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#include <zephyr/init.h>
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#include <errno.h>
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#include <zephyr/sys/math_extras.h>
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#include <string.h>
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#include <zephyr/app_memory/app_memdomain.h>
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#include <zephyr/sys/mutex.h>
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#include <zephyr/sys/sys_heap.h>
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#include <zephyr/types.h>
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#define LOG_LEVEL CONFIG_KERNEL_LOG_LEVEL
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#include <zephyr/logging/log.h>
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LOG_MODULE_DECLARE(os, CONFIG_KERNEL_LOG_LEVEL);
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#ifdef CONFIG_MINIMAL_LIBC_MALLOC
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#if (CONFIG_MINIMAL_LIBC_MALLOC_ARENA_SIZE > 0)
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#ifdef CONFIG_USERSPACE
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K_APPMEM_PARTITION_DEFINE(z_malloc_partition);
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#define POOL_SECTION K_APP_DMEM_SECTION(z_malloc_partition)
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#else
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#define POOL_SECTION .bss
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#endif /* CONFIG_USERSPACE */
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#define HEAP_BYTES CONFIG_MINIMAL_LIBC_MALLOC_ARENA_SIZE
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Z_GENERIC_SECTION(POOL_SECTION) static struct sys_heap z_malloc_heap;
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Z_GENERIC_SECTION(POOL_SECTION) struct sys_mutex z_malloc_heap_mutex;
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Z_GENERIC_SECTION(POOL_SECTION) static char z_malloc_heap_mem[HEAP_BYTES];
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void *malloc(size_t size)
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{
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int lock_ret;
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lock_ret = sys_mutex_lock(&z_malloc_heap_mutex, K_FOREVER);
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__ASSERT_NO_MSG(lock_ret == 0);
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void *ret = sys_heap_aligned_alloc(&z_malloc_heap,
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__alignof__(z_max_align_t),
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size);
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if (ret == NULL && size != 0) {
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errno = ENOMEM;
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}
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(void) sys_mutex_unlock(&z_malloc_heap_mutex);
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return ret;
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}
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static int malloc_prepare(const struct device *unused)
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{
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ARG_UNUSED(unused);
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sys_heap_init(&z_malloc_heap, z_malloc_heap_mem, HEAP_BYTES);
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sys_mutex_init(&z_malloc_heap_mutex);
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return 0;
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}
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void *realloc(void *ptr, size_t requested_size)
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{
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int lock_ret;
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lock_ret = sys_mutex_lock(&z_malloc_heap_mutex, K_FOREVER);
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__ASSERT_NO_MSG(lock_ret == 0);
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void *ret = sys_heap_aligned_realloc(&z_malloc_heap, ptr,
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__alignof__(z_max_align_t),
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requested_size);
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if (ret == NULL && requested_size != 0) {
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errno = ENOMEM;
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}
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(void) sys_mutex_unlock(&z_malloc_heap_mutex);
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return ret;
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}
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void free(void *ptr)
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{
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int lock_ret;
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lock_ret = sys_mutex_lock(&z_malloc_heap_mutex, K_FOREVER);
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__ASSERT_NO_MSG(lock_ret == 0);
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sys_heap_free(&z_malloc_heap, ptr);
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(void) sys_mutex_unlock(&z_malloc_heap_mutex);
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}
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SYS_INIT(malloc_prepare, POST_KERNEL, CONFIG_KERNEL_INIT_PRIORITY_DEFAULT);
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#else /* No malloc arena */
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void *malloc(size_t size)
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{
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ARG_UNUSED(size);
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LOG_ERR("CONFIG_MINIMAL_LIBC_MALLOC_ARENA_SIZE is 0");
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errno = ENOMEM;
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return NULL;
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}
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void free(void *ptr)
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{
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ARG_UNUSED(ptr);
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}
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void *realloc(void *ptr, size_t size)
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{
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ARG_UNUSED(ptr);
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return malloc(size);
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}
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#endif
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#endif /* CONFIG_MINIMAL_LIBC_MALLOC */
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#ifdef CONFIG_MINIMAL_LIBC_CALLOC
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void *calloc(size_t nmemb, size_t size)
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{
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void *ret;
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if (size_mul_overflow(nmemb, size, &size)) {
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errno = ENOMEM;
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return NULL;
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}
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ret = malloc(size);
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if (ret != NULL) {
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(void)memset(ret, 0, size);
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}
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return ret;
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}
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#endif /* CONFIG_MINIMAL_LIBC_CALLOC */
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#ifdef CONFIG_MINIMAL_LIBC_REALLOCARRAY
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void *reallocarray(void *ptr, size_t nmemb, size_t size)
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{
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#if (CONFIG_MINIMAL_LIBC_MALLOC_ARENA_SIZE > 0)
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if (size_mul_overflow(nmemb, size, &size)) {
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errno = ENOMEM;
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return NULL;
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}
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return realloc(ptr, size);
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#else
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return NULL;
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#endif
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}
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#endif /* CONFIG_MINIMAL_LIBC_REALLOCARRAY */
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