mirror of https://github.com/mpv-player/mpv
185 lines
7.7 KiB
C
185 lines
7.7 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_H_
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#define TA_H_
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#include <stddef.h>
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#include <stdbool.h>
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#include <stdarg.h>
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#ifdef __GNUC__
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#define TA_PRF(a1, a2) __attribute__ ((format(printf, a1, a2)))
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#define TA_TYPEOF(t) __typeof__(t)
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#else
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#define TA_PRF(a1, a2)
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#define TA_TYPEOF(t) void *
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#endif
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// Broken crap with __USE_MINGW_ANSI_STDIO
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#if defined(__MINGW32__) && defined(__GNUC__) && !defined(__clang__)
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#undef TA_PRF
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#define TA_PRF(a1, a2) __attribute__ ((format (gnu_printf, a1, a2)))
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#endif
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#define TA_STRINGIFY_(x) # x
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#define TA_STRINGIFY(x) TA_STRINGIFY_(x)
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#ifdef NDEBUG
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#define TA_LOC ""
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#else
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#define TA_LOC __FILE__ ":" TA_STRINGIFY(__LINE__)
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#endif
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// Core functions
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void *ta_alloc_size(void *ta_parent, size_t size);
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void *ta_zalloc_size(void *ta_parent, size_t size);
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void *ta_realloc_size(void *ta_parent, void *ptr, size_t size);
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size_t ta_get_size(void *ptr);
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void ta_free(void *ptr);
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void ta_free_children(void *ptr);
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void ta_set_destructor(void *ptr, void (*destructor)(void *));
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void ta_set_parent(void *ptr, void *ta_parent);
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void *ta_get_parent(void *ptr);
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// Utility functions
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size_t ta_calc_array_size(size_t element_size, size_t count);
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size_t ta_calc_prealloc_elems(size_t nextidx);
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void *ta_new_context(void *ta_parent);
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void *ta_steal_(void *ta_parent, void *ptr);
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void *ta_memdup(void *ta_parent, void *ptr, size_t size);
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char *ta_strdup(void *ta_parent, const char *str);
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bool ta_strdup_append(char **str, const char *a);
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bool ta_strdup_append_buffer(char **str, const char *a);
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char *ta_strndup(void *ta_parent, const char *str, size_t n);
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bool ta_strndup_append(char **str, const char *a, size_t n);
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bool ta_strndup_append_buffer(char **str, const char *a, size_t n);
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char *ta_asprintf(void *ta_parent, const char *fmt, ...) TA_PRF(2, 3);
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char *ta_vasprintf(void *ta_parent, const char *fmt, va_list ap) TA_PRF(2, 0);
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bool ta_asprintf_append(char **str, const char *fmt, ...) TA_PRF(2, 3);
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bool ta_vasprintf_append(char **str, const char *fmt, va_list ap) TA_PRF(2, 0);
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bool ta_asprintf_append_buffer(char **str, const char *fmt, ...) TA_PRF(2, 3);
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bool ta_vasprintf_append_buffer(char **str, const char *fmt, va_list ap) TA_PRF(2, 0);
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#define ta_new(ta_parent, type) (type *)ta_alloc_size(ta_parent, sizeof(type))
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#define ta_znew(ta_parent, type) (type *)ta_zalloc_size(ta_parent, sizeof(type))
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#define ta_new_array(ta_parent, type, count) \
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(type *)ta_alloc_size(ta_parent, ta_calc_array_size(sizeof(type), count))
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#define ta_znew_array(ta_parent, type, count) \
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(type *)ta_zalloc_size(ta_parent, ta_calc_array_size(sizeof(type), count))
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#define ta_new_array_size(ta_parent, element_size, count) \
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ta_alloc_size(ta_parent, ta_calc_array_size(element_size, count))
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#define ta_realloc(ta_parent, ptr, type, count) \
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(type *)ta_realloc_size(ta_parent, ptr, ta_calc_array_size(sizeof(type), count))
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#define ta_new_ptrtype(ta_parent, ptr) \
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(TA_TYPEOF(ptr))ta_alloc_size(ta_parent, sizeof(*ptr))
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#define ta_new_array_ptrtype(ta_parent, ptr, count) \
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(TA_TYPEOF(ptr))ta_new_array_size(ta_parent, sizeof(*(ptr)), count)
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#define ta_steal(ta_parent, ptr) (TA_TYPEOF(ptr))ta_steal_(ta_parent, ptr)
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#define ta_dup(ta_parent, ptr) \
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(TA_TYPEOF(ptr))ta_memdup(ta_parent, ptr, sizeof(*(ptr)))
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#define ta_replace(ta_parent, str, replace) \
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do { \
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if (!(str)) { \
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(str) = ta_xstrdup((ta_parent), (replace)); \
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} else { \
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*(str) = '\0'; \
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ta_xstrdup_append(&(str), (replace)); \
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} \
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} while (0)
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// Ugly macros that crash on OOM.
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// All of these mirror real functions (with a 'x' added after the 'ta_'
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// prefix), and the only difference is that they will call abort() on allocation
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// failures (such as out of memory conditions), instead of returning an error
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// code.
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#define ta_xalloc_size(...) ta_oom_p(ta_alloc_size(__VA_ARGS__))
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#define ta_xzalloc_size(...) ta_oom_p(ta_zalloc_size(__VA_ARGS__))
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#define ta_xnew_context(...) ta_oom_p(ta_new_context(__VA_ARGS__))
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#define ta_xstrdup_append(...) ta_oom_b(ta_strdup_append(__VA_ARGS__))
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#define ta_xstrdup_append_buffer(...) ta_oom_b(ta_strdup_append_buffer(__VA_ARGS__))
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#define ta_xstrndup_append(...) ta_oom_b(ta_strndup_append(__VA_ARGS__))
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#define ta_xstrndup_append_buffer(...) ta_oom_b(ta_strndup_append_buffer(__VA_ARGS__))
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#define ta_xasprintf(...) ta_oom_s(ta_asprintf(__VA_ARGS__))
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#define ta_xvasprintf(...) ta_oom_s(ta_vasprintf(__VA_ARGS__))
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#define ta_xasprintf_append(...) ta_oom_b(ta_asprintf_append(__VA_ARGS__))
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#define ta_xvasprintf_append(...) ta_oom_b(ta_vasprintf_append(__VA_ARGS__))
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#define ta_xasprintf_append_buffer(...) ta_oom_b(ta_asprintf_append_buffer(__VA_ARGS__))
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#define ta_xvasprintf_append_buffer(...) ta_oom_b(ta_vasprintf_append_buffer(__VA_ARGS__))
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#define ta_xnew(...) ta_oom_g(ta_new(__VA_ARGS__))
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#define ta_xznew(...) ta_oom_g(ta_znew(__VA_ARGS__))
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#define ta_xnew_array(...) ta_oom_g(ta_new_array(__VA_ARGS__))
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#define ta_xznew_array(...) ta_oom_g(ta_znew_array(__VA_ARGS__))
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#define ta_xnew_array_size(...) ta_oom_p(ta_new_array_size(__VA_ARGS__))
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#define ta_xnew_ptrtype(...) ta_oom_g(ta_new_ptrtype(__VA_ARGS__))
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#define ta_xnew_array_ptrtype(...) ta_oom_g(ta_new_array_ptrtype(__VA_ARGS__))
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#define ta_xdup(...) ta_oom_g(ta_dup(__VA_ARGS__))
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#define ta_xrealloc(ta_parent, ptr, type, count) \
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(type *)ta_xrealloc_size(ta_parent, ptr, ta_calc_array_size(sizeof(type), count))
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// Can't be macros, because the OOM logic is slightly less trivial.
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char *ta_xstrdup(void *ta_parent, const char *str);
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char *ta_xstrndup(void *ta_parent, const char *str, size_t n);
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void *ta_xmemdup(void *ta_parent, void *ptr, size_t size);
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void *ta_xrealloc_size(void *ta_parent, void *ptr, size_t size);
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#ifndef TA_NO_WRAPPERS
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#define ta_alloc_size(...) ta_dbg_set_loc(ta_alloc_size(__VA_ARGS__), TA_LOC)
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#define ta_zalloc_size(...) ta_dbg_set_loc(ta_zalloc_size(__VA_ARGS__), TA_LOC)
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#define ta_realloc_size(...) ta_dbg_set_loc(ta_realloc_size(__VA_ARGS__), TA_LOC)
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#define ta_memdup(...) ta_dbg_set_loc(ta_memdup(__VA_ARGS__), TA_LOC)
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#define ta_xmemdup(...) ta_dbg_set_loc(ta_xmemdup(__VA_ARGS__), TA_LOC)
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#define ta_xrealloc_size(...) ta_dbg_set_loc(ta_xrealloc_size(__VA_ARGS__), TA_LOC)
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#endif
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static inline void *ta_oom_p(void *p)
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{
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if (!p)
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abort();
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return p;
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}
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static inline void ta_oom_b(bool b)
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{
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if (!b)
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abort();
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}
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static inline char *ta_oom_s(char *s)
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{
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if (!s)
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abort();
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return s;
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}
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// Generic pointer
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#define ta_oom_g(ptr) (TA_TYPEOF(ptr))ta_oom_p(ptr)
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void ta_enable_leak_report(void);
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void *ta_dbg_set_loc(void *ptr, const char *name);
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void *ta_dbg_mark_as_string(void *ptr);
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#endif
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