mirror of
https://github.com/mpv-player/mpv
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6827901230
It was actually already implemented as ta_dup_ptrtype(), but that seems like a clunky name. Also we still use the talloc_ names throughout the source, and I'd rather use an old name instead of a mixing inconsistent naming conventions.
139 lines
6.1 KiB
C
139 lines
6.1 KiB
C
/* Copyright (C) 2017 the mpv developers
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*
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* Permission to use, copy, modify, and/or distribute this software for any
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* purpose with or without fee is hereby granted, provided that the above
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* copyright notice and this permission notice appear in all copies.
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*
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* THE SOFTWARE IS PROVIDED "AS IS" AND THE AUTHOR DISCLAIMS ALL WARRANTIES
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* WITH REGARD TO THIS SOFTWARE INCLUDING ALL IMPLIED WARRANTIES OF
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* MERCHANTABILITY AND FITNESS. IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR
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* ANY SPECIAL, DIRECT, INDIRECT, OR CONSEQUENTIAL DAMAGES OR ANY DAMAGES
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* WHATSOEVER RESULTING FROM LOSS OF USE, DATA OR PROFITS, WHETHER IN AN
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* ACTION OF CONTRACT, NEGLIGENCE OR OTHER TORTIOUS ACTION, ARISING OUT OF
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* OR IN CONNECTION WITH THE USE OR PERFORMANCE OF THIS SOFTWARE.
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*/
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#ifndef TA_TALLOC_H_
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#define TA_TALLOC_H_
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#include <string.h>
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#include "ta.h"
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// Note: all talloc wrappers are wired to the "x" functions, which abort on OOM.
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// libtalloc doesn't do that, but the mplayer2 internal copy of it did.
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#define talloc ta_xnew
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#define talloc_zero ta_xznew
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#define talloc_array ta_xnew_array
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#define talloc_zero_array ta_xznew_array
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#define talloc_array_size ta_xnew_array_size
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#define talloc_realloc ta_xrealloc
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#define talloc_ptrtype ta_xnew_ptrtype
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#define talloc_array_ptrtype ta_xnew_array_ptrtype
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#define talloc_steal ta_xsteal
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#define talloc_realloc_size ta_xrealloc_size
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#define talloc_new ta_xnew_context
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#define talloc_set_destructor ta_xset_destructor
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#define talloc_parent ta_find_parent
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#define talloc_enable_leak_report ta_enable_leak_report
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#define talloc_size ta_xalloc_size
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#define talloc_zero_size ta_xzalloc_size
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#define talloc_get_size ta_get_size
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#define talloc_free_children ta_free_children
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#define talloc_free ta_free
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#define talloc_dup ta_xdup
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#define talloc_memdup ta_xmemdup
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#define talloc_strdup ta_xstrdup
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#define talloc_strndup ta_xstrndup
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#define talloc_asprintf ta_xasprintf
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#define talloc_vasprintf ta_xvasprintf
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// Don't define linker-level symbols, as that would clash with real libtalloc.
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#define talloc_strdup_append ta_talloc_strdup_append
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#define talloc_strdup_append_buffer ta_talloc_strdup_append_buffer
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#define talloc_strndup_append ta_talloc_strndup_append
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#define talloc_strndup_append_buffer ta_talloc_strndup_append_buffer
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#define talloc_vasprintf_append ta_talloc_vasprintf_append
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#define talloc_vasprintf_append_buffer ta_talloc_vasprintf_append_buffer
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#define talloc_asprintf_append ta_talloc_asprintf_append
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#define talloc_asprintf_append_buffer ta_talloc_asprintf_append_buffer
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char *ta_talloc_strdup(void *t, const char *p);
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char *ta_talloc_strdup_append(char *s, const char *a);
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char *ta_talloc_strdup_append_buffer(char *s, const char *a);
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char *ta_talloc_strndup(void *t, const char *p, size_t n);
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char *ta_talloc_strndup_append(char *s, const char *a, size_t n);
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char *ta_talloc_strndup_append_buffer(char *s, const char *a, size_t n);
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char *ta_talloc_vasprintf_append(char *s, const char *fmt, va_list ap) TA_PRF(2, 0);
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char *ta_talloc_vasprintf_append_buffer(char *s, const char *fmt, va_list ap) TA_PRF(2, 0);
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char *ta_talloc_asprintf_append(char *s, const char *fmt, ...) TA_PRF(2, 3);
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char *ta_talloc_asprintf_append_buffer(char *s, const char *fmt, ...) TA_PRF(2, 3);
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// mpv specific stuff - should be made part of proper TA API
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#define TA_FREEP(pctx) do {talloc_free(*(pctx)); *(pctx) = NULL;} while(0)
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#define TA_EXPAND_ARGS(...) __VA_ARGS__
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#define MP_TALLOC_AVAIL(p) (talloc_get_size(p) / sizeof((p)[0]))
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#define MP_RESIZE_ARRAY(ctx, p, count) \
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do { \
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(p) = ta_xrealloc_size(ctx, p, \
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ta_calc_array_size(sizeof((p)[0]), count)); \
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} while (0)
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#define MP_TARRAY_GROW(ctx, p, nextidx) \
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do { \
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size_t nextidx_ = (nextidx); \
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if (nextidx_ >= MP_TALLOC_AVAIL(p)) \
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MP_RESIZE_ARRAY(ctx, p, ta_calc_prealloc_elems(nextidx_)); \
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} while (0)
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#define MP_TARRAY_APPEND(ctx, p, idxvar, ...) \
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do { \
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MP_TARRAY_GROW(ctx, p, idxvar); \
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(p)[(idxvar)] = (TA_EXPAND_ARGS(__VA_ARGS__));\
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(idxvar)++; \
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} while (0)
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#define MP_TARRAY_INSERT_AT(ctx, p, idxvar, at, ...)\
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do { \
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size_t at_ = (at); \
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assert(at_ <= (idxvar)); \
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MP_TARRAY_GROW(ctx, p, idxvar); \
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memmove((p) + at_ + 1, (p) + at_, \
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((idxvar) - at_) * sizeof((p)[0])); \
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(idxvar)++; \
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(p)[at_] = (TA_EXPAND_ARGS(__VA_ARGS__)); \
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} while (0)
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// Doesn't actually free any memory, or do any other talloc calls.
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#define MP_TARRAY_REMOVE_AT(p, idxvar, at) \
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do { \
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size_t at_ = (at); \
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assert(at_ <= (idxvar)); \
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memmove((p) + at_, (p) + at_ + 1, \
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((idxvar) - at_ - 1) * sizeof((p)[0])); \
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(idxvar)--; \
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} while (0)
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// Returns whether or not there was any element to pop.
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#define MP_TARRAY_POP(p, idxvar, out) \
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((idxvar) > 0 \
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? (*(out) = (p)[--(idxvar)], true) \
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: false \
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)
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#define talloc_struct(ctx, type, ...) \
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talloc_memdup(ctx, &(type) TA_EXPAND_ARGS(__VA_ARGS__), sizeof(type))
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#endif
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