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implement user clean up

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Kirill Pinegin 2019-11-14 16:25:36 +03:00
parent f8dc519a04
commit bb3558100b
2 changed files with 36 additions and 8 deletions
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4
include/mimalloc.h
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@ -114,10 +114,8 @@ mi_decl_export void mi_register_deferred_free(mi_deferred_free_fun* deferred_fre
typedef void (mi_output_fun)(const char* msg);
mi_decl_export void mi_register_output(mi_output_fun* out) mi_attr_noexcept;
#if MI_USER_CLEANUP
typedef void (mi_cleanup_fun)(void* user_data, void* p, size_t size);
mi_decl_export void mi_register_user_cleanup(mi_cleanup_fun* out, void* user_data) mi_attr_noexcept;
#endif
mi_decl_export void mi_register_user_cleanup(mi_cleanup_fun* cleanup, void* user_data) mi_attr_noexcept;
mi_decl_export void mi_collect(bool force) mi_attr_noexcept;
mi_decl_export int mi_version(void) mi_attr_noexcept;

40
src/os.c
View file

@ -177,6 +177,39 @@ void _mi_os_init() {
}
#endif
#if MI_USER_CLEANUP
static mi_cleanup_fun* user_cleanup = NULL;
static void* cleanup_udata = NULL;
static void _mi_call_user_cleanup(void* p, size_t size)
{
if(user_cleanup)
user_cleanup(cleanup_udata, p, size);
#if (MI_DEBUG>1)
else
memset(start, 0, csize);
#endif
}
#else
static void _mi_call_user_cleanup(void* p, size_t size)
{
(void)p;
(void)size;
#if (MI_DEBUG>1)
if (MI_SECURE==0)
memset(start, 0, csize); // pretend it is eagerly reset
#endif
}
#endif
void mi_register_user_cleanup(mi_cleanup_fun* cleanup, void* user_data)
{
(void)cleanup;
(void)user_data;
#if MI_USER_CLEANUP
user_cleanup = cleanup;
cleanup_udata = user_data;
#endif
}
/* -----------------------------------------------------------
Raw allocation on Windows (VirtualAlloc) and Unix's (mmap).
@ -186,6 +219,7 @@ static bool mi_os_mem_free(void* addr, size_t size, bool was_committed, mi_stats
{
if (addr == NULL || size == 0 || _mi_os_is_huge_reserved(addr)) return true;
bool err = false;
_mi_call_user_cleanup(addr, size);
#if defined(_WIN32)
err = (VirtualFree(addr, 0, MEM_RELEASE) == 0);
#elif defined(__wasi__)
@ -687,11 +721,7 @@ static bool mi_os_resetx(void* addr, size_t size, bool reset, mi_stats_t* stats)
else _mi_stat_decrease(&stats->reset, csize);
if (!reset) return true; // nothing to do on unreset!
#if (MI_DEBUG>1)
if (MI_SECURE==0) {
memset(start, 0, csize); // pretend it is eagerly reset
}
#endif
_mi_call_user_cleanup(start, size);
#if defined(_WIN32)
// Testing shows that for us (on `malloc-large`) MEM_RESET is 2x faster than DiscardVirtualMemory