Rongsong Shen
f155b1ef97
- hook_item_t.fn changed to _Atomic hook_fn_t (C11 stdatomic) - xce_disable_hook(): atomically stores NULL into the slot fn field; returns 0 on success, -ENOENT if fn not found, -EINVAL on bad args - xce_add_hook(): scans for NULL (disabled) slots before allocating; uses atomic_store_explicit(release) when writing fn pointer - xce_run_hooks(): atomic_load_explicit(acquire) + NULL guard so disabled slots are silently skipped without disrupting the loop - Add src/lib/testsuite/test_hooks.c with 3 TDD tests: test_disable_hook_stops_invocation test_disable_hook_returns_enoent_if_not_found test_add_hook_reuses_null_slot - Register test_hooks in meson.build and test.c runner Required by ha_demote_to_standby() to atomically disable persistence hooks when the controller steps down from primary, preventing unbounded hook list growth across promote/demote cycles (resolution A6-015, A7-004, A7-016).
31 lines
680 B
C
31 lines
680 B
C
#if !defined(__HOOK_H__)
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#define __HOOK_H__ 1
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#include <stdarg.h>
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#include <stdatomic.h>
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#include <stddef.h>
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#include "xlist.h"
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#define HOOK_BEFORE_EVENT (0)
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#define HOOK_AFTER_EVENT (1)
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typedef int (*hook_fn_t)(int, int, int, void*, va_list);
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typedef struct {
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_Atomic hook_fn_t fn;
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void* data;
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} hook_item_t;
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typedef struct {
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int maxtypes;
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xlist_t* hooks;
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} hooksys_t;
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extern int xce_hook_init(hooksys_t*, int);
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extern int xce_add_hook(hooksys_t*, int, hook_fn_t, void*);
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extern int xce_disable_hook(hooksys_t*, int, hook_fn_t);
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extern int xce_run_hooks(hooksys_t*, int, int, int, ...);
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extern void xce_hook_fini(hooksys_t*);
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#endif
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