Index: nspr/lib/ds/plarena.h |
diff --git a/nspr/lib/ds/plarena.h b/nspr/lib/ds/plarena.h |
deleted file mode 100644 |
index 2673a2ae16667a63427e9a2ea343a07720281a07..0000000000000000000000000000000000000000 |
--- a/nspr/lib/ds/plarena.h |
+++ /dev/null |
@@ -1,258 +0,0 @@ |
-/* -*- Mode: C++; tab-width: 4; indent-tabs-mode: nil; c-basic-offset: 2 -*- */ |
-/* This Source Code Form is subject to the terms of the Mozilla Public |
- * License, v. 2.0. If a copy of the MPL was not distributed with this |
- * file, You can obtain one at http://mozilla.org/MPL/2.0/. */ |
- |
-#ifndef plarena_h___ |
-#define plarena_h___ |
-/* |
- * Lifetime-based fast allocation, inspired by much prior art, including |
- * "Fast Allocation and Deallocation of Memory Based on Object Lifetimes" |
- * David R. Hanson, Software -- Practice and Experience, Vol. 20(1). |
- * |
- * Also supports LIFO allocation (PL_ARENA_MARK/PL_ARENA_RELEASE). |
- */ |
-#include "prtypes.h" |
-#include "plarenas.h" |
- |
-PR_BEGIN_EXTERN_C |
- |
-typedef struct PLArena PLArena; |
- |
-struct PLArena { |
- PLArena *next; /* next arena for this lifetime */ |
- PRUword base; /* aligned base address, follows this header */ |
- PRUword limit; /* one beyond last byte in arena */ |
- PRUword avail; /* points to next available byte */ |
-}; |
- |
-#ifdef PL_ARENAMETER |
-typedef struct PLArenaStats PLArenaStats; |
- |
-struct PLArenaStats { |
- PLArenaStats *next; /* next in arenaStats list */ |
- char *name; /* name for debugging */ |
- PRUint32 narenas; /* number of arenas in pool */ |
- PRUint32 nallocs; /* number of PL_ARENA_ALLOCATE() calls */ |
- PRUint32 nreclaims; /* number of reclaims from freeArenas */ |
- PRUint32 nmallocs; /* number of malloc() calls */ |
- PRUint32 ndeallocs; /* number of lifetime deallocations */ |
- PRUint32 ngrows; /* number of PL_ARENA_GROW() calls */ |
- PRUint32 ninplace; /* number of in-place growths */ |
- PRUint32 nreleases; /* number of PL_ARENA_RELEASE() calls */ |
- PRUint32 nfastrels; /* number of "fast path" releases */ |
- PRUint32 nbytes; /* total bytes allocated */ |
- PRUint32 maxalloc; /* maximum allocation size in bytes */ |
- PRFloat64 variance; /* size variance accumulator */ |
-}; |
-#endif |
- |
-struct PLArenaPool { |
- PLArena first; /* first arena in pool list */ |
- PLArena *current; /* arena from which to allocate space */ |
- PRUint32 arenasize; /* net exact size of a new arena */ |
- PRUword mask; /* alignment mask (power-of-2 - 1) */ |
-#ifdef PL_ARENAMETER |
- PLArenaStats stats; |
-#endif |
-}; |
- |
-/* |
- * WARNING: The PL_MAKE_MEM_ macros are for internal use by NSPR. Do NOT use |
- * them in your code. |
- * |
- * NOTE: Valgrind support to be added. |
- * |
- * The PL_MAKE_MEM_ macros are modeled after the MOZ_MAKE_MEM_ macros in |
- * Mozilla's mfbt/MemoryChecking.h. Only AddressSanitizer is supported now. |
- * |
- * Provides a common interface to the ASan (AddressSanitizer) and Valgrind |
- * functions used to mark memory in certain ways. In detail, the following |
- * three macros are provided: |
- * |
- * PL_MAKE_MEM_NOACCESS - Mark memory as unsafe to access (e.g. freed) |
- * PL_MAKE_MEM_UNDEFINED - Mark memory as accessible, with content undefined |
- * PL_MAKE_MEM_DEFINED - Mark memory as accessible, with content defined |
- * |
- * With Valgrind in use, these directly map to the three respective Valgrind |
- * macros. With ASan in use, the NOACCESS macro maps to poisoning the memory, |
- * while the UNDEFINED/DEFINED macros unpoison memory. |
- * |
- * With no memory checker available, all macros expand to the empty statement. |
- */ |
- |
-/* WARNING: PL_SANITIZE_ADDRESS is for internal use by this header. Do NOT |
- * define or test this macro in your code. |
- */ |
-#if defined(__has_feature) |
-#if __has_feature(address_sanitizer) |
-#define PL_SANITIZE_ADDRESS 1 |
-#endif |
-#elif defined(__SANITIZE_ADDRESS__) |
-#define PL_SANITIZE_ADDRESS 1 |
-#endif |
- |
-#if defined(PL_SANITIZE_ADDRESS) |
- |
-/* These definitions are usually provided through the |
- * sanitizer/asan_interface.h header installed by ASan. |
- * See https://github.com/google/sanitizers/wiki/AddressSanitizerManualPoisoning |
- */ |
- |
-PR_IMPORT(void) __asan_poison_memory_region(void const volatile *addr, size_t size); |
-PR_IMPORT(void) __asan_unpoison_memory_region(void const volatile *addr, size_t size); |
- |
-#define PL_MAKE_MEM_NOACCESS(addr, size) \ |
- __asan_poison_memory_region((addr), (size)) |
- |
-#define PL_MAKE_MEM_UNDEFINED(addr, size) \ |
- __asan_unpoison_memory_region((addr), (size)) |
- |
-#define PL_MAKE_MEM_DEFINED(addr, size) \ |
- __asan_unpoison_memory_region((addr), (size)) |
- |
-#else |
- |
-#define PL_MAKE_MEM_NOACCESS(addr, size) |
-#define PL_MAKE_MEM_UNDEFINED(addr, size) |
-#define PL_MAKE_MEM_DEFINED(addr, size) |
- |
-#endif |
- |
-/* |
- * If the including .c file uses only one power-of-2 alignment, it may define |
- * PL_ARENA_CONST_ALIGN_MASK to the alignment mask and save a few instructions |
- * per ALLOCATE and GROW. |
- */ |
-#ifdef PL_ARENA_CONST_ALIGN_MASK |
-#define PL_ARENA_ALIGN(pool, n) (((PRUword)(n) + PL_ARENA_CONST_ALIGN_MASK) \ |
- & ~PL_ARENA_CONST_ALIGN_MASK) |
- |
-#define PL_INIT_ARENA_POOL(pool, name, size) \ |
- PL_InitArenaPool(pool, name, size, PL_ARENA_CONST_ALIGN_MASK + 1) |
-#else |
-#define PL_ARENA_ALIGN(pool, n) (((PRUword)(n) + (pool)->mask) & ~(pool)->mask) |
-#endif |
- |
-#define PL_ARENA_ALLOCATE(p, pool, nb) \ |
- PR_BEGIN_MACRO \ |
- PLArena *_a = (pool)->current; \ |
- PRUint32 _nb = PL_ARENA_ALIGN(pool, (PRUint32)nb); \ |
- PRUword _p = _a->avail; \ |
- if (_nb < (PRUint32)nb) { \ |
- _p = 0; \ |
- } else if (_nb > (_a->limit - _a->avail)) { \ |
- _p = (PRUword)PL_ArenaAllocate(pool, _nb); \ |
- } else { \ |
- _a->avail += _nb; \ |
- } \ |
- p = (void *)_p; \ |
- if (p) { \ |
- PL_MAKE_MEM_UNDEFINED(p, (PRUint32)nb); \ |
- PL_ArenaCountAllocation(pool, (PRUint32)nb); \ |
- } \ |
- PR_END_MACRO |
- |
-#define PL_ARENA_GROW(p, pool, size, incr) \ |
- PR_BEGIN_MACRO \ |
- PLArena *_a = (pool)->current; \ |
- PRUint32 _incr = PL_ARENA_ALIGN(pool, (PRUint32)incr); \ |
- if (_incr < (PRUint32)incr) { \ |
- p = NULL; \ |
- } else if (_a->avail == (PRUword)(p) + PL_ARENA_ALIGN(pool, size) && \ |
- _incr <= (_a->limit - _a->avail)) { \ |
- PL_MAKE_MEM_UNDEFINED((unsigned char *)(p) + size, (PRUint32)incr); \ |
- _a->avail += _incr; \ |
- PL_ArenaCountInplaceGrowth(pool, size, (PRUint32)incr); \ |
- } else { \ |
- p = PL_ArenaGrow(pool, p, size, (PRUint32)incr); \ |
- } \ |
- if (p) {\ |
- PL_ArenaCountGrowth(pool, size, (PRUint32)incr); \ |
- } \ |
- PR_END_MACRO |
- |
-#define PL_ARENA_MARK(pool) ((void *) (pool)->current->avail) |
-#define PR_UPTRDIFF(p,q) ((PRUword)(p) - (PRUword)(q)) |
- |
-#define PL_CLEAR_UNUSED_PATTERN(a, pattern) \ |
- PR_BEGIN_MACRO \ |
- PR_ASSERT((a)->avail <= (a)->limit); \ |
- PL_MAKE_MEM_UNDEFINED((void*)(a)->avail, (a)->limit - (a)->avail); \ |
- memset((void*)(a)->avail, (pattern), (a)->limit - (a)->avail); \ |
- PR_END_MACRO |
-#ifdef DEBUG |
-#define PL_FREE_PATTERN 0xDA |
-#define PL_CLEAR_UNUSED(a) PL_CLEAR_UNUSED_PATTERN((a), PL_FREE_PATTERN) |
-#define PL_CLEAR_ARENA(a) \ |
- PR_BEGIN_MACRO \ |
- PL_MAKE_MEM_UNDEFINED((void*)(a), (a)->limit - (PRUword)(a)); \ |
- memset((void*)(a), PL_FREE_PATTERN, (a)->limit - (PRUword)(a)); \ |
- PR_END_MACRO |
-#else |
-#define PL_CLEAR_UNUSED(a) |
-#define PL_CLEAR_ARENA(a) |
-#endif |
- |
-#define PL_ARENA_RELEASE(pool, mark) \ |
- PR_BEGIN_MACRO \ |
- char *_m = (char *)(mark); \ |
- PLArena *_a = (pool)->current; \ |
- if (PR_UPTRDIFF(_m, _a->base) <= PR_UPTRDIFF(_a->avail, _a->base)) { \ |
- _a->avail = (PRUword)PL_ARENA_ALIGN(pool, _m); \ |
- PL_CLEAR_UNUSED(_a); \ |
- PL_MAKE_MEM_NOACCESS((void*)_a->avail, _a->limit - _a->avail); \ |
- PL_ArenaCountRetract(pool, _m); \ |
- } else { \ |
- PL_ArenaRelease(pool, _m); \ |
- } \ |
- PL_ArenaCountRelease(pool, _m); \ |
- PR_END_MACRO |
- |
-#ifdef PL_ARENAMETER |
-#define PL_COUNT_ARENA(pool,op) ((pool)->stats.narenas op) |
-#else |
-#define PL_COUNT_ARENA(pool,op) |
-#endif |
- |
-#define PL_ARENA_DESTROY(pool, a, pnext) \ |
- PR_BEGIN_MACRO \ |
- PL_COUNT_ARENA(pool,--); \ |
- if ((pool)->current == (a)) (pool)->current = &(pool)->first; \ |
- *(pnext) = (a)->next; \ |
- PL_CLEAR_ARENA(a); \ |
- free(a); \ |
- (a) = 0; \ |
- PR_END_MACRO |
- |
-#ifdef PL_ARENAMETER |
- |
-#include <stdio.h> |
- |
-PR_EXTERN(void) PL_ArenaCountAllocation(PLArenaPool *pool, PRUint32 nb); |
- |
-PR_EXTERN(void) PL_ArenaCountInplaceGrowth( |
- PLArenaPool *pool, PRUint32 size, PRUint32 incr); |
- |
-PR_EXTERN(void) PL_ArenaCountGrowth( |
- PLArenaPool *pool, PRUint32 size, PRUint32 incr); |
- |
-PR_EXTERN(void) PL_ArenaCountRelease(PLArenaPool *pool, char *mark); |
- |
-PR_EXTERN(void) PL_ArenaCountRetract(PLArenaPool *pool, char *mark); |
- |
-PR_EXTERN(void) PL_DumpArenaStats(FILE *fp); |
- |
-#else /* !PL_ARENAMETER */ |
- |
-#define PL_ArenaCountAllocation(ap, nb) /* nothing */ |
-#define PL_ArenaCountInplaceGrowth(ap, size, incr) /* nothing */ |
-#define PL_ArenaCountGrowth(ap, size, incr) /* nothing */ |
-#define PL_ArenaCountRelease(ap, mark) /* nothing */ |
-#define PL_ArenaCountRetract(ap, mark) /* nothing */ |
- |
-#endif /* !PL_ARENAMETER */ |
- |
-PR_END_EXTERN_C |
- |
-#endif /* plarena_h___ */ |