diff options
author | Kent Overstreet <kent.overstreet@gmail.com> | 2022-03-30 17:40:25 -0400 |
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committer | Kent Overstreet <kent.overstreet@gmail.com> | 2022-03-30 17:40:37 -0400 |
commit | e240b4ae86adb022e3266220ce9807dad8b51beb (patch) | |
tree | 535081dc65b75f8f288f10b820eeebbd64f9e0e0 /ccan/darray/darray.h | |
parent | 59abea577659ce82ff0098633caaf74076a9b4d7 (diff) |
Update bcachefs sources to f638850417 bcachefs: bch2_trans_log_msg()
Diffstat (limited to 'ccan/darray/darray.h')
-rw-r--r-- | ccan/darray/darray.h | 355 |
1 files changed, 0 insertions, 355 deletions
diff --git a/ccan/darray/darray.h b/ccan/darray/darray.h deleted file mode 100644 index 75112419..00000000 --- a/ccan/darray/darray.h +++ /dev/null @@ -1,355 +0,0 @@ -/* - * Copyright (C) 2011 Joseph Adams <joeyadams3.14159@gmail.com> - * - * Permission is hereby granted, free of charge, to any person obtaining a copy - * of this software and associated documentation files (the "Software"), to deal - * in the Software without restriction, including without limitation the rights - * to use, copy, modify, merge, publish, distribute, sublicense, and/or sell - * copies of the Software, and to permit persons to whom the Software is - * furnished to do so, subject to the following conditions: - * - * The above copyright notice and this permission notice shall be included in - * all copies or substantial portions of the Software. - * - * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR - * IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY, - * FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE - * AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER - * LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, - * OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN - * THE SOFTWARE. - */ - -#ifndef CCAN_DARRAY_H -#define CCAN_DARRAY_H - -#include <stdlib.h> -#include <string.h> -#include "config.h" - -/* - * SYNOPSIS - * - * Life cycle of a darray (dynamically-allocated array): - * - * darray(int) a = darray_new(); - * darray_free(a); - * - * struct {darray(int) a;} foo; - * darray_init(foo.a); - * darray_free(foo.a); - * - * Typedefs for darrays of common types: - * - * darray_char, darray_schar, darray_uchar - * darray_short, darray_int, darray_long - * darray_ushort, darray_uint, darray_ulong - * - * Access: - * - * T darray_item(darray(T) arr, size_t index); - * size_t darray_size(darray(T) arr); - * size_t darray_alloc(darray(T) arr); - * bool darray_empty(darray(T) arr); - * - * Insertion (single item): - * - * void darray_append(darray(T) arr, T item); - * void darray_prepend(darray(T) arr, T item); - * void darray_push(darray(T) arr, T item); // same as darray_append - * - * Insertion (multiple items): - * - * void darray_append_items(darray(T) arr, T *items, size_t count); - * void darray_prepend_items(darray(T) arr, T *items, size_t count); - * - * void darray_appends(darray(T) arr, [T item, [...]]); - * void darray_prepends(darray(T) arr, [T item, [...]]); - * - * // Same functionality as above, but does not require typeof. - * void darray_appends_t(darray(T) arr, #T, [T item, [...]]); - * void darray_prepends_t(darray(T) arr, #T, [T item, [...]]); - * - * Removal: - * - * T darray_pop(darray(T) arr | darray_size(arr) != 0); - * T* darray_pop_check(darray(T*) arr); - * void darray_remove(darray(T) arr, size_t index); - * - * Replacement: - * - * void darray_from_items(darray(T) arr, T *items, size_t count); - * void darray_from_c(darray(T) arr, T c_array[N]); - * - * String buffer: - * - * void darray_append_string(darray(char) arr, const char *str); - * void darray_append_lit(darray(char) arr, char stringLiteral[N+1]); - * - * void darray_prepend_string(darray(char) arr, const char *str); - * void darray_prepend_lit(darray(char) arr, char stringLiteral[N+1]); - * - * void darray_from_string(darray(T) arr, const char *str); - * void darray_from_lit(darray(char) arr, char stringLiteral[N+1]); - * - * Size management: - * - * void darray_resize(darray(T) arr, size_t newSize); - * void darray_resize0(darray(T) arr, size_t newSize); - * - * void darray_realloc(darray(T) arr, size_t newAlloc); - * void darray_growalloc(darray(T) arr, size_t newAlloc); - * - * void darray_make_room(darray(T) arr, size_t room); - * - * Traversal: - * - * darray_foreach(T *&i, darray(T) arr) {...} - * darray_foreach_reverse(T *&i, darray(T) arr) {...} - * - * Except for darray_foreach, darray_foreach_reverse, and darray_remove, - * all macros evaluate their non-darray arguments only once. - */ - -/*** Life cycle ***/ - -#define darray(type) struct {type *item; size_t size; size_t alloc;} - -#define darray_new() {0,0,0} -#define darray_init(arr) do {(arr).item=0; (arr).size=0; (arr).alloc=0;} while(0) -#define darray_free(arr) do {free((arr).item);} while(0) - - -/* - * Typedefs for darrays of common types. These are useful - * when you want to pass a pointer to an darray(T) around. - * - * The following will produce an incompatible pointer warning: - * - * void foo(darray(int) *arr); - * darray(int) arr = darray_new(); - * foo(&arr); - * - * The workaround: - * - * void foo(darray_int *arr); - * darray_int arr = darray_new(); - * foo(&arr); - */ - -typedef darray(char) darray_char; -typedef darray(signed char) darray_schar; -typedef darray(unsigned char) darray_uchar; - -typedef darray(short) darray_short; -typedef darray(int) darray_int; -typedef darray(long) darray_long; - -typedef darray(unsigned short) darray_ushort; -typedef darray(unsigned int) darray_uint; -typedef darray(unsigned long) darray_ulong; - - -/*** Access ***/ - -#define darray_item(arr, i) ((arr).item[i]) -#define darray_size(arr) ((arr).size) -#define darray_alloc(arr) ((arr).alloc) -#define darray_empty(arr) ((arr).size == 0) - - -/*** Insertion (single item) ***/ - -#define darray_append(arr, ...) do { \ - darray_resize(arr, (arr).size+1); \ - (arr).item[(arr).size-1] = (__VA_ARGS__); \ - } while(0) -#define darray_prepend(arr, ...) do { \ - darray_resize(arr, (arr).size+1); \ - memmove((arr).item+1, (arr).item, ((arr).size-1)*sizeof(*(arr).item)); \ - (arr).item[0] = (__VA_ARGS__); \ - } while(0) -#define darray_push(arr, ...) darray_append(arr, __VA_ARGS__) - - -/*** Insertion (multiple items) ***/ - -#define darray_append_items(arr, items, count) do { \ - size_t __count = (count), __oldSize = (arr).size; \ - darray_resize(arr, __oldSize + __count); \ - memcpy((arr).item + __oldSize, items, __count * sizeof(*(arr).item)); \ - } while(0) - -#define darray_prepend_items(arr, items, count) do { \ - size_t __count = (count), __oldSize = (arr).size; \ - darray_resize(arr, __count + __oldSize); \ - memmove((arr).item + __count, (arr).item, __oldSize * sizeof(*(arr).item)); \ - memcpy((arr).item, items, __count * sizeof(*(arr).item)); \ - } while(0) - -#define darray_append_items_nullterminate(arr, items, count) do { \ - size_t __count = (count), __oldSize = (arr).size; \ - darray_resize(arr, __oldSize + __count + 1); \ - memcpy((arr).item + __oldSize, items, __count * sizeof(*(arr).item)); \ - (arr).item[--(arr).size] = 0; \ - } while(0) - -#define darray_prepend_items_nullterminate(arr, items, count) do { \ - size_t __count = (count), __oldSize = (arr).size; \ - darray_resize(arr, __count + __oldSize + 1); \ - memmove((arr).item + __count, (arr).item, __oldSize * sizeof(*(arr).item)); \ - memcpy((arr).item, items, __count * sizeof(*(arr).item)); \ - (arr).item[--(arr).size] = 0; \ - } while(0) - -#if HAVE_TYPEOF -#define darray_appends(arr, ...) darray_appends_t(arr, typeof((*(arr).item)), __VA_ARGS__) -#define darray_prepends(arr, ...) darray_prepends_t(arr, typeof((*(arr).item)), __VA_ARGS__) -#endif - -#define darray_appends_t(arr, type, ...) do { \ - type __src[] = {__VA_ARGS__}; \ - darray_append_items(arr, __src, sizeof(__src)/sizeof(*__src)); \ - } while(0) -#define darray_prepends_t(arr, type, ...) do { \ - type __src[] = {__VA_ARGS__}; \ - darray_prepend_items(arr, __src, sizeof(__src)/sizeof(*__src)); \ - } while(0) - - -/*** Removal ***/ - -/* Warning: Do not call darray_pop on an empty darray. */ -#define darray_pop(arr) ((arr).item[--(arr).size]) -#define darray_pop_check(arr) ((arr).size ? darray_pop(arr) : NULL) -/* Warning, slow: Requires copying all elements after removed item. */ -#define darray_remove(arr, index) do { \ - if (index < arr.size-1) \ - memmove(&(arr).item[index], &(arr).item[index+1], ((arr).size-1-i)*sizeof(*(arr).item)); \ - (arr).size--; \ - } while(0) - - -/*** Replacement ***/ - -#define darray_from_items(arr, items, count) do {size_t __count = (count); darray_resize(arr, __count); memcpy((arr).item, items, __count*sizeof(*(arr).item));} while(0) -#define darray_from_c(arr, c_array) darray_from_items(arr, c_array, sizeof(c_array)/sizeof(*(c_array))) - - -/*** String buffer ***/ - -#define darray_append_string(arr, str) do {const char *__str = (str); darray_append_items(arr, __str, strlen(__str)+1); (arr).size--;} while(0) -#define darray_append_lit(arr, stringLiteral) do {darray_append_items(arr, stringLiteral, sizeof(stringLiteral)); (arr).size--;} while(0) - -#define darray_prepend_string(arr, str) do { \ - const char *__str = (str); \ - darray_prepend_items_nullterminate(arr, __str, strlen(__str)); \ - } while(0) -#define darray_prepend_lit(arr, stringLiteral) \ - darray_prepend_items_nullterminate(arr, stringLiteral, sizeof(stringLiteral) - 1) - -#define darray_from_string(arr, str) do {const char *__str = (str); darray_from_items(arr, __str, strlen(__str)+1); (arr).size--;} while(0) -#define darray_from_lit(arr, stringLiteral) do {darray_from_items(arr, stringLiteral, sizeof(stringLiteral)); (arr).size--;} while(0) - - -/*** Size management ***/ - -#define darray_resize(arr, newSize) darray_growalloc(arr, (arr).size = (newSize)) -#define darray_resize0(arr, newSize) do { \ - size_t __oldSize = (arr).size, __newSize = (newSize); \ - (arr).size = __newSize; \ - if (__newSize > __oldSize) { \ - darray_growalloc(arr, __newSize); \ - memset(&(arr).item[__oldSize], 0, (__newSize - __oldSize) * sizeof(*(arr).item)); \ - } \ - } while(0) - -#define darray_realloc(arr, newAlloc) do { \ - (arr).item = realloc((arr).item, ((arr).alloc = (newAlloc)) * sizeof(*(arr).item)); \ - } while(0) -#define darray_growalloc(arr, need) do { \ - size_t __need = (need); \ - if (__need > (arr).alloc) \ - darray_realloc(arr, darray_next_alloc((arr).alloc, __need)); \ - } while(0) - -#if HAVE_STATEMENT_EXPR==1 -#define darray_make_room(arr, room) ({size_t newAlloc = (arr).size+(room); if ((arr).alloc<newAlloc) darray_realloc(arr, newAlloc); (arr).item+(arr).size; }) -#endif - -static inline size_t darray_next_alloc(size_t alloc, size_t need) -{ - if (alloc == 0) - alloc = 1; - while (alloc < need) - alloc *= 2; - return alloc; -} - - -/*** Traversal ***/ - -/* - * darray_foreach(T *&i, darray(T) arr) {...} - * - * Traverse a darray. `i` must be declared in advance as a pointer to an item. - */ -#define darray_foreach(i, arr) \ - for ((i) = &(arr).item[0]; (i) < &(arr).item[(arr).size]; (i)++) - -/* - * darray_foreach_reverse(T *&i, darray(T) arr) {...} - * - * Like darray_foreach, but traverse in reverse order. - */ -#define darray_foreach_reverse(i, arr) \ - for ((i) = &(arr).item[(arr).size]; (i)-- > &(arr).item[0]; ) - - -#endif /* CCAN_DARRAY_H */ - -/* - -darray_growalloc(arr, newAlloc) sees if the darray can currently hold newAlloc items; - if not, it increases the alloc to satisfy this requirement, allocating slack - space to avoid having to reallocate for every size increment. - -darray_from_string(arr, str) copies a string to an darray_char. - -darray_push(arr, item) pushes an item to the end of the darray. -darray_pop(arr) pops it back out. Be sure there is at least one item in the darray before calling. -darray_pop_check(arr) does the same as darray_pop, but returns NULL if there are no more items left in the darray. - -darray_make_room(arr, room) ensures there's 'room' elements of space after the end of the darray, and it returns a pointer to this space. -Currently requires HAVE_STATEMENT_EXPR, but I plan to remove this dependency by creating an inline function. - -The following require HAVE_TYPEOF==1 : - -darray_appends(arr, item0, item1...) appends a collection of comma-delimited items to the darray. -darray_prepends(arr, item0, item1...) prepends a collection of comma-delimited items to the darray.\ - - -Examples: - - darray(int) arr; - int *i; - - darray_appends(arr, 0,1,2,3,4); - darray_appends(arr, -5,-4,-3,-2,-1); - darray_foreach(i, arr) - printf("%d ", *i); - printf("\n"); - - darray_free(arr); - - - typedef struct {int n,d;} Fraction; - darray(Fraction) fractions; - Fraction *i; - - darray_appends(fractions, {3,4}, {3,5}, {2,1}); - darray_foreach(i, fractions) - printf("%d/%d\n", i->n, i->d); - - darray_free(fractions); -*/ |