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lib: libc: common: Export z_malloc_heap #79123

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lib: libc: common: Export z_malloc_heap #79123

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2 changes: 1 addition & 1 deletion lib/libc/common/source/stdlib/malloc.c
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Original file line number Diff line number Diff line change
Expand Up @@ -114,7 +114,7 @@ extern char _heap_sentry[];

# endif /* else ALLOCATE_HEAP_AT_STARTUP */

Z_LIBC_DATA static struct sys_heap z_malloc_heap;
Z_LIBC_DATA struct sys_heap z_malloc_heap;
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I understand this can be useful for debugging purposes; but, this more or less creates an implicit contract between an internal implementation detail of common libc and whatever will be using this (another Zephyr component? user application?), and I anticipate we will be seeing bugs like "unresolved symbol z_malloc_heap" (or even worse "sys_heap_runtime_stats_get crashing because z_malloc_heap is no longer struct sys_heap") in the future if we do this.

I would say we should define and implement Zephyr-flavoured mallinfo with the fields we need if we want to make the internal heap stats available to the components external to the common libc; otherwise, patches/hacks like these should stay in one's local branch.


#ifdef CONFIG_MULTITHREADING
Z_LIBC_DATA SYS_MUTEX_DEFINE(z_malloc_heap_mutex);
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