3d29d11ac2
Before this commit jemalloc produced many warnings when compiled with -Wextra
with both Clang and GCC. This commit fixes the issues raised by these warnings
or suppresses them if they were spurious at least for the Clang and GCC
versions covered by CI.
This commit:
* adds `JEMALLOC_DIAGNOSTIC` macros: `JEMALLOC_DIAGNOSTIC_{PUSH,POP}` are
used to modify the stack of enabled diagnostics. The
`JEMALLOC_DIAGNOSTIC_IGNORE_...` macros are used to ignore a concrete
diagnostic.
* adds `JEMALLOC_FALLTHROUGH` macro to explicitly state that falling
through `case` labels in a `switch` statement is intended
* Removes all UNUSED annotations on function parameters. The warning
-Wunused-parameter is now disabled globally in
`jemalloc_internal_macros.h` for all translation units that include
that header. It is never re-enabled since that header cannot be
included by users.
* locally suppresses some -Wextra diagnostics:
* `-Wmissing-field-initializer` is buggy in older Clang and GCC versions,
where it does not understanding that, in C, `= {0}` is a common C idiom
to initialize a struct to zero
* `-Wtype-bounds` is suppressed in a particular situation where a generic
macro, used in multiple different places, compares an unsigned integer for
smaller than zero, which is always true.
* `-Walloc-larger-than-size=` diagnostics warn when an allocation function is
called with a size that is too large (out-of-range). These are suppressed in
the parts of the tests where `jemalloc` explicitly does this to test that the
allocation functions fail properly.
* adds a new CI build bot that runs the log unit test on CI.
Closes #1196 .
434 lines
11 KiB
C
434 lines
11 KiB
C
#ifndef JEMALLOC_INTERNAL_EXTENT_INLINES_H
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#define JEMALLOC_INTERNAL_EXTENT_INLINES_H
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#include "jemalloc/internal/mutex.h"
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#include "jemalloc/internal/mutex_pool.h"
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#include "jemalloc/internal/pages.h"
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#include "jemalloc/internal/prng.h"
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#include "jemalloc/internal/ql.h"
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#include "jemalloc/internal/sz.h"
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static inline void
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extent_lock(tsdn_t *tsdn, extent_t *extent) {
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assert(extent != NULL);
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mutex_pool_lock(tsdn, &extent_mutex_pool, (uintptr_t)extent);
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}
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static inline void
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extent_unlock(tsdn_t *tsdn, extent_t *extent) {
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assert(extent != NULL);
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mutex_pool_unlock(tsdn, &extent_mutex_pool, (uintptr_t)extent);
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}
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static inline void
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extent_lock2(tsdn_t *tsdn, extent_t *extent1, extent_t *extent2) {
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assert(extent1 != NULL && extent2 != NULL);
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mutex_pool_lock2(tsdn, &extent_mutex_pool, (uintptr_t)extent1,
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(uintptr_t)extent2);
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}
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static inline void
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extent_unlock2(tsdn_t *tsdn, extent_t *extent1, extent_t *extent2) {
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assert(extent1 != NULL && extent2 != NULL);
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mutex_pool_unlock2(tsdn, &extent_mutex_pool, (uintptr_t)extent1,
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(uintptr_t)extent2);
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}
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static inline arena_t *
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extent_arena_get(const extent_t *extent) {
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unsigned arena_ind = (unsigned)((extent->e_bits &
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EXTENT_BITS_ARENA_MASK) >> EXTENT_BITS_ARENA_SHIFT);
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/*
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* The following check is omitted because we should never actually read
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* a NULL arena pointer.
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*/
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if (false && arena_ind >= MALLOCX_ARENA_LIMIT) {
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return NULL;
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}
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assert(arena_ind < MALLOCX_ARENA_LIMIT);
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return (arena_t *)atomic_load_p(&arenas[arena_ind], ATOMIC_ACQUIRE);
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}
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static inline szind_t
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extent_szind_get_maybe_invalid(const extent_t *extent) {
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szind_t szind = (szind_t)((extent->e_bits & EXTENT_BITS_SZIND_MASK) >>
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EXTENT_BITS_SZIND_SHIFT);
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assert(szind <= NSIZES);
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return szind;
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}
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static inline szind_t
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extent_szind_get(const extent_t *extent) {
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szind_t szind = extent_szind_get_maybe_invalid(extent);
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assert(szind < NSIZES); /* Never call when "invalid". */
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return szind;
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}
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static inline size_t
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extent_usize_get(const extent_t *extent) {
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return sz_index2size(extent_szind_get(extent));
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}
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static inline size_t
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extent_sn_get(const extent_t *extent) {
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return (size_t)((extent->e_bits & EXTENT_BITS_SN_MASK) >>
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EXTENT_BITS_SN_SHIFT);
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}
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static inline extent_state_t
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extent_state_get(const extent_t *extent) {
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return (extent_state_t)((extent->e_bits & EXTENT_BITS_STATE_MASK) >>
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EXTENT_BITS_STATE_SHIFT);
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}
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static inline bool
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extent_zeroed_get(const extent_t *extent) {
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return (bool)((extent->e_bits & EXTENT_BITS_ZEROED_MASK) >>
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EXTENT_BITS_ZEROED_SHIFT);
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}
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static inline bool
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extent_committed_get(const extent_t *extent) {
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return (bool)((extent->e_bits & EXTENT_BITS_COMMITTED_MASK) >>
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EXTENT_BITS_COMMITTED_SHIFT);
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}
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static inline bool
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extent_dumpable_get(const extent_t *extent) {
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return (bool)((extent->e_bits & EXTENT_BITS_DUMPABLE_MASK) >>
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EXTENT_BITS_DUMPABLE_SHIFT);
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}
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static inline bool
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extent_slab_get(const extent_t *extent) {
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return (bool)((extent->e_bits & EXTENT_BITS_SLAB_MASK) >>
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EXTENT_BITS_SLAB_SHIFT);
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}
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static inline unsigned
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extent_nfree_get(const extent_t *extent) {
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assert(extent_slab_get(extent));
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return (unsigned)((extent->e_bits & EXTENT_BITS_NFREE_MASK) >>
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EXTENT_BITS_NFREE_SHIFT);
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}
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static inline void *
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extent_base_get(const extent_t *extent) {
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assert(extent->e_addr == PAGE_ADDR2BASE(extent->e_addr) ||
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!extent_slab_get(extent));
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return PAGE_ADDR2BASE(extent->e_addr);
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}
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static inline void *
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extent_addr_get(const extent_t *extent) {
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assert(extent->e_addr == PAGE_ADDR2BASE(extent->e_addr) ||
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!extent_slab_get(extent));
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return extent->e_addr;
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}
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static inline size_t
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extent_size_get(const extent_t *extent) {
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return (extent->e_size_esn & EXTENT_SIZE_MASK);
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}
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static inline size_t
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extent_esn_get(const extent_t *extent) {
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return (extent->e_size_esn & EXTENT_ESN_MASK);
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}
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static inline size_t
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extent_bsize_get(const extent_t *extent) {
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return extent->e_bsize;
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}
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static inline void *
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extent_before_get(const extent_t *extent) {
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return (void *)((uintptr_t)extent_base_get(extent) - PAGE);
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}
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static inline void *
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extent_last_get(const extent_t *extent) {
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return (void *)((uintptr_t)extent_base_get(extent) +
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extent_size_get(extent) - PAGE);
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}
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static inline void *
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extent_past_get(const extent_t *extent) {
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return (void *)((uintptr_t)extent_base_get(extent) +
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extent_size_get(extent));
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}
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static inline arena_slab_data_t *
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extent_slab_data_get(extent_t *extent) {
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assert(extent_slab_get(extent));
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return &extent->e_slab_data;
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}
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static inline const arena_slab_data_t *
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extent_slab_data_get_const(const extent_t *extent) {
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assert(extent_slab_get(extent));
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return &extent->e_slab_data;
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}
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static inline prof_tctx_t *
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extent_prof_tctx_get(const extent_t *extent) {
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return (prof_tctx_t *)atomic_load_p(&extent->e_prof_tctx,
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ATOMIC_ACQUIRE);
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}
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static inline void
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extent_arena_set(extent_t *extent, arena_t *arena) {
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unsigned arena_ind = (arena != NULL) ? arena_ind_get(arena) : ((1U <<
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MALLOCX_ARENA_BITS) - 1);
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extent->e_bits = (extent->e_bits & ~EXTENT_BITS_ARENA_MASK) |
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((uint64_t)arena_ind << EXTENT_BITS_ARENA_SHIFT);
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}
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static inline void
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extent_addr_set(extent_t *extent, void *addr) {
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extent->e_addr = addr;
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}
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static inline void
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extent_addr_randomize(tsdn_t *tsdn, extent_t *extent, size_t alignment) {
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assert(extent_base_get(extent) == extent_addr_get(extent));
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if (alignment < PAGE) {
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unsigned lg_range = LG_PAGE -
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lg_floor(CACHELINE_CEILING(alignment));
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size_t r;
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if (!tsdn_null(tsdn)) {
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tsd_t *tsd = tsdn_tsd(tsdn);
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r = (size_t)prng_lg_range_u64(
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tsd_offset_statep_get(tsd), lg_range);
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} else {
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r = prng_lg_range_zu(
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&extent_arena_get(extent)->offset_state,
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lg_range, true);
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}
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uintptr_t random_offset = ((uintptr_t)r) << (LG_PAGE -
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lg_range);
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extent->e_addr = (void *)((uintptr_t)extent->e_addr +
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random_offset);
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assert(ALIGNMENT_ADDR2BASE(extent->e_addr, alignment) ==
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extent->e_addr);
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}
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}
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static inline void
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extent_size_set(extent_t *extent, size_t size) {
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assert((size & ~EXTENT_SIZE_MASK) == 0);
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extent->e_size_esn = size | (extent->e_size_esn & ~EXTENT_SIZE_MASK);
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}
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static inline void
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extent_esn_set(extent_t *extent, size_t esn) {
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extent->e_size_esn = (extent->e_size_esn & ~EXTENT_ESN_MASK) | (esn &
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EXTENT_ESN_MASK);
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}
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static inline void
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extent_bsize_set(extent_t *extent, size_t bsize) {
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extent->e_bsize = bsize;
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}
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static inline void
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extent_szind_set(extent_t *extent, szind_t szind) {
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assert(szind <= NSIZES); /* NSIZES means "invalid". */
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extent->e_bits = (extent->e_bits & ~EXTENT_BITS_SZIND_MASK) |
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((uint64_t)szind << EXTENT_BITS_SZIND_SHIFT);
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}
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static inline void
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extent_nfree_set(extent_t *extent, unsigned nfree) {
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assert(extent_slab_get(extent));
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extent->e_bits = (extent->e_bits & ~EXTENT_BITS_NFREE_MASK) |
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((uint64_t)nfree << EXTENT_BITS_NFREE_SHIFT);
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}
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static inline void
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extent_nfree_inc(extent_t *extent) {
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assert(extent_slab_get(extent));
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extent->e_bits += ((uint64_t)1U << EXTENT_BITS_NFREE_SHIFT);
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}
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static inline void
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extent_nfree_dec(extent_t *extent) {
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assert(extent_slab_get(extent));
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extent->e_bits -= ((uint64_t)1U << EXTENT_BITS_NFREE_SHIFT);
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}
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static inline void
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extent_sn_set(extent_t *extent, size_t sn) {
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extent->e_bits = (extent->e_bits & ~EXTENT_BITS_SN_MASK) |
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((uint64_t)sn << EXTENT_BITS_SN_SHIFT);
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}
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static inline void
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extent_state_set(extent_t *extent, extent_state_t state) {
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extent->e_bits = (extent->e_bits & ~EXTENT_BITS_STATE_MASK) |
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((uint64_t)state << EXTENT_BITS_STATE_SHIFT);
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}
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static inline void
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extent_zeroed_set(extent_t *extent, bool zeroed) {
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extent->e_bits = (extent->e_bits & ~EXTENT_BITS_ZEROED_MASK) |
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((uint64_t)zeroed << EXTENT_BITS_ZEROED_SHIFT);
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}
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static inline void
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extent_committed_set(extent_t *extent, bool committed) {
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extent->e_bits = (extent->e_bits & ~EXTENT_BITS_COMMITTED_MASK) |
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((uint64_t)committed << EXTENT_BITS_COMMITTED_SHIFT);
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}
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static inline void
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extent_dumpable_set(extent_t *extent, bool dumpable) {
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extent->e_bits = (extent->e_bits & ~EXTENT_BITS_DUMPABLE_MASK) |
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((uint64_t)dumpable << EXTENT_BITS_DUMPABLE_SHIFT);
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}
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static inline void
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extent_slab_set(extent_t *extent, bool slab) {
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extent->e_bits = (extent->e_bits & ~EXTENT_BITS_SLAB_MASK) |
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((uint64_t)slab << EXTENT_BITS_SLAB_SHIFT);
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}
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static inline void
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extent_prof_tctx_set(extent_t *extent, prof_tctx_t *tctx) {
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atomic_store_p(&extent->e_prof_tctx, tctx, ATOMIC_RELEASE);
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}
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static inline void
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extent_init(extent_t *extent, arena_t *arena, void *addr, size_t size,
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bool slab, szind_t szind, size_t sn, extent_state_t state, bool zeroed,
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bool committed, bool dumpable) {
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assert(addr == PAGE_ADDR2BASE(addr) || !slab);
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extent_arena_set(extent, arena);
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extent_addr_set(extent, addr);
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extent_size_set(extent, size);
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extent_slab_set(extent, slab);
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extent_szind_set(extent, szind);
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extent_sn_set(extent, sn);
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extent_state_set(extent, state);
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extent_zeroed_set(extent, zeroed);
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extent_committed_set(extent, committed);
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extent_dumpable_set(extent, dumpable);
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ql_elm_new(extent, ql_link);
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if (config_prof) {
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extent_prof_tctx_set(extent, NULL);
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}
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}
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static inline void
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extent_binit(extent_t *extent, void *addr, size_t bsize, size_t sn) {
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extent_arena_set(extent, NULL);
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extent_addr_set(extent, addr);
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extent_bsize_set(extent, bsize);
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extent_slab_set(extent, false);
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extent_szind_set(extent, NSIZES);
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extent_sn_set(extent, sn);
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extent_state_set(extent, extent_state_active);
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extent_zeroed_set(extent, true);
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extent_committed_set(extent, true);
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extent_dumpable_set(extent, true);
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}
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static inline void
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extent_list_init(extent_list_t *list) {
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ql_new(list);
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}
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static inline extent_t *
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extent_list_first(const extent_list_t *list) {
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return ql_first(list);
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}
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static inline extent_t *
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extent_list_last(const extent_list_t *list) {
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return ql_last(list, ql_link);
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}
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static inline void
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extent_list_append(extent_list_t *list, extent_t *extent) {
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ql_tail_insert(list, extent, ql_link);
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}
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static inline void
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extent_list_prepend(extent_list_t *list, extent_t *extent) {
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ql_head_insert(list, extent, ql_link);
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}
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static inline void
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extent_list_replace(extent_list_t *list, extent_t *to_remove,
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extent_t *to_insert) {
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ql_after_insert(to_remove, to_insert, ql_link);
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ql_remove(list, to_remove, ql_link);
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}
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static inline void
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extent_list_remove(extent_list_t *list, extent_t *extent) {
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ql_remove(list, extent, ql_link);
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}
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static inline int
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extent_sn_comp(const extent_t *a, const extent_t *b) {
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size_t a_sn = extent_sn_get(a);
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size_t b_sn = extent_sn_get(b);
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return (a_sn > b_sn) - (a_sn < b_sn);
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}
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static inline int
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extent_esn_comp(const extent_t *a, const extent_t *b) {
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size_t a_esn = extent_esn_get(a);
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size_t b_esn = extent_esn_get(b);
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return (a_esn > b_esn) - (a_esn < b_esn);
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}
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static inline int
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extent_ad_comp(const extent_t *a, const extent_t *b) {
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uintptr_t a_addr = (uintptr_t)extent_addr_get(a);
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uintptr_t b_addr = (uintptr_t)extent_addr_get(b);
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return (a_addr > b_addr) - (a_addr < b_addr);
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}
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static inline int
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extent_ead_comp(const extent_t *a, const extent_t *b) {
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uintptr_t a_eaddr = (uintptr_t)a;
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uintptr_t b_eaddr = (uintptr_t)b;
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return (a_eaddr > b_eaddr) - (a_eaddr < b_eaddr);
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}
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static inline int
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extent_snad_comp(const extent_t *a, const extent_t *b) {
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int ret;
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ret = extent_sn_comp(a, b);
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if (ret != 0) {
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return ret;
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}
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ret = extent_ad_comp(a, b);
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return ret;
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}
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static inline int
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extent_esnead_comp(const extent_t *a, const extent_t *b) {
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int ret;
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ret = extent_esn_comp(a, b);
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if (ret != 0) {
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return ret;
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}
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ret = extent_ead_comp(a, b);
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return ret;
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}
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#endif /* JEMALLOC_INTERNAL_EXTENT_INLINES_H */
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