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port pool stats to 1.10 #102

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Merged
merged 2 commits into from
Oct 30, 2023
Merged

port pool stats to 1.10 #102

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f3541b8
port pool stats to 1.10
kpamnany Aug 21, 2023
2d4e231
increment/decrement current_pg_count
d-netto Oct 29, 2023
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29 changes: 29 additions & 0 deletions src/gc-pages.c
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Original file line number Diff line number Diff line change
Expand Up @@ -19,6 +19,31 @@ extern "C" {
#define MIN_BLOCK_PG_ALLOC (1) // 16 KB

static int block_pg_cnt = DEFAULT_BLOCK_PG_ALLOC;
static _Atomic(size_t) current_pg_count = 0;

// Julia allocates large blocks (64M) with mmap. These are never
// released back but the underlying physical memory may be released
// with calls to madvise(MADV_DONTNEED).
// These large blocks are used to allocated jl_page_size sized
// pages, that are tracked by current_pg_count.
static uint64_t poolmem_bytes_allocated = 0;
static uint64_t poolmem_blocks_allocated_total = 0;


JL_DLLEXPORT uint64_t jl_poolmem_blocks_allocated_total(void)
{
return poolmem_blocks_allocated_total;
}

JL_DLLEXPORT uint64_t jl_poolmem_bytes_allocated(void)
{
return poolmem_bytes_allocated;
}

JL_DLLEXPORT uint64_t jl_current_pg_count(void)
{
return (uint64_t)jl_atomic_load(&current_pg_count);
}

void jl_gc_init_page(void)
{
Expand Down Expand Up @@ -47,6 +72,8 @@ char *jl_gc_try_alloc_pages_(int pg_cnt) JL_NOTSAFEPOINT
MAP_NORESERVE | MAP_PRIVATE | MAP_ANONYMOUS, -1, 0);
if (mem == MAP_FAILED)
return NULL;
poolmem_bytes_allocated += pages_sz;
poolmem_blocks_allocated_total++;

#ifdef MADV_NOHUGEPAGE
madvise(mem, pages_sz, MADV_NOHUGEPAGE);
Expand Down Expand Up @@ -152,6 +179,7 @@ NOINLINE jl_gc_pagemeta_t *jl_gc_alloc_page(void) JL_NOTSAFEPOINT
SetLastError(last_error);
#endif
errno = last_errno;
jl_atomic_fetch_add(&current_pg_count, 1);
return meta;
}

Expand Down Expand Up @@ -192,6 +220,7 @@ void jl_gc_free_page(jl_gc_pagemeta_t *pg) JL_NOTSAFEPOINT
madvise(p, decommit_size, MADV_DONTNEED);
#endif
msan_unpoison(p, decommit_size);
jl_atomic_fetch_add(&current_pg_count, -1);
}

#ifdef __cplusplus
Expand Down