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San: Implement bump alloc

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The new allocator will be used to allocate guarded extents used as slabs
for guarded small allocations.
This commit is contained in:
Alex Lapenkou
2021-11-04 11:10:19 -07:00
committed by Alexander Lapenkov
parent 34b00f8969
commit 0f6da1257d
15 changed files with 521 additions and 107 deletions
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28
test/include/test/arena_decay.h
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@@ -1,4 +1,4 @@
static unsigned
static inline unsigned
do_arena_create(ssize_t dirty_decay_ms, ssize_t muzzy_decay_ms) {
unsigned arena_ind;
size_t sz = sizeof(unsigned);
@@ -24,7 +24,7 @@ do_arena_create(ssize_t dirty_decay_ms, ssize_t muzzy_decay_ms) {
return arena_ind;
}
static void
static inline void
do_arena_destroy(unsigned arena_ind) {
size_t mib[3];
size_t miblen = sizeof(mib)/sizeof(size_t);
@@ -35,14 +35,14 @@ do_arena_destroy(unsigned arena_ind) {
"Unexpected mallctlbymib() failure");
}
static void
static inline void
do_epoch(void) {
uint64_t epoch = 1;
expect_d_eq(mallctl("epoch", NULL, NULL, (void *)&epoch, sizeof(epoch)),
0, "Unexpected mallctl() failure");
}
static void
static inline void
do_purge(unsigned arena_ind) {
size_t mib[3];
size_t miblen = sizeof(mib)/sizeof(size_t);
@@ -53,7 +53,7 @@ do_purge(unsigned arena_ind) {
"Unexpected mallctlbymib() failure");
}
static void
static inline void
do_decay(unsigned arena_ind) {
size_t mib[3];
size_t miblen = sizeof(mib)/sizeof(size_t);
@@ -64,7 +64,7 @@ do_decay(unsigned arena_ind) {
"Unexpected mallctlbymib() failure");
}
static uint64_t
static inline uint64_t
get_arena_npurge_impl(const char *mibname, unsigned arena_ind) {
size_t mib[4];
size_t miblen = sizeof(mib)/sizeof(size_t);
@@ -78,32 +78,32 @@ get_arena_npurge_impl(const char *mibname, unsigned arena_ind) {
return npurge;
}
static uint64_t
static inline uint64_t
get_arena_dirty_npurge(unsigned arena_ind) {
do_epoch();
return get_arena_npurge_impl("stats.arenas.0.dirty_npurge", arena_ind);
}
static uint64_t
static inline uint64_t
get_arena_dirty_purged(unsigned arena_ind) {
do_epoch();
return get_arena_npurge_impl("stats.arenas.0.dirty_purged", arena_ind);
}
static uint64_t
static inline uint64_t
get_arena_muzzy_npurge(unsigned arena_ind) {
do_epoch();
return get_arena_npurge_impl("stats.arenas.0.muzzy_npurge", arena_ind);
}
static uint64_t
static inline uint64_t
get_arena_npurge(unsigned arena_ind) {
do_epoch();
return get_arena_npurge_impl("stats.arenas.0.dirty_npurge", arena_ind) +
get_arena_npurge_impl("stats.arenas.0.muzzy_npurge", arena_ind);
}
static size_t
static inline size_t
get_arena_pdirty(unsigned arena_ind) {
do_epoch();
size_t mib[4];
@@ -118,7 +118,7 @@ get_arena_pdirty(unsigned arena_ind) {
return pdirty;
}
static size_t
static inline size_t
get_arena_pmuzzy(unsigned arena_ind) {
do_epoch();
size_t mib[4];
@@ -133,14 +133,14 @@ get_arena_pmuzzy(unsigned arena_ind) {
return pmuzzy;
}
static void *
static inline void *
do_mallocx(size_t size, int flags) {
void *p = mallocx(size, flags);
expect_ptr_not_null(p, "Unexpected mallocx() failure");
return p;
}
static void
static inline void
generate_dirty(unsigned arena_ind, size_t size) {
int flags = MALLOCX_ARENA(arena_ind) | MALLOCX_TCACHE_NONE;
void *p = do_mallocx(size, flags);