#ifdef GENERATOR_FILE
#include "bconfig.h"
#else
#include "config.h"
#endif
#include "system.h"
#include "ggc.h"
#include "vec.h"
#include "coretypes.h"
#include "tree.h"
#include "toplev.h"
struct vec_prefix
{
unsigned num;
unsigned alloc;
void *vec[1];
};
static inline unsigned
calculate_allocation (const struct vec_prefix *pfx, int reserve, bool exact)
{
unsigned alloc = 0;
unsigned num = 0;
gcc_assert (reserve >= 0);
if (pfx)
{
alloc = pfx->alloc;
num = pfx->num;
}
else if (!reserve)
return 0;
gcc_assert (alloc - num < (unsigned) reserve);
if (exact)
alloc = num + reserve;
else
{
if (!alloc)
alloc = 4;
else if (alloc < 16)
alloc = alloc * 2;
else
alloc = (alloc * 3 / 2);
if (alloc < num + reserve)
alloc = num + reserve;
}
return alloc;
}
static void *
vec_gc_o_reserve_1 (void *vec, int reserve, size_t vec_offset, size_t elt_size,
bool exact MEM_STAT_DECL)
{
struct vec_prefix *pfx = vec;
unsigned alloc = alloc = calculate_allocation (pfx, reserve, exact);
if (!alloc)
return NULL;
vec = ggc_realloc_stat (vec, vec_offset + alloc * elt_size PASS_MEM_STAT);
((struct vec_prefix *)vec)->alloc = alloc;
if (!pfx)
((struct vec_prefix *)vec)->num = 0;
return vec;
}
void *
vec_gc_p_reserve (void *vec, int reserve MEM_STAT_DECL)
{
return vec_gc_o_reserve_1 (vec, reserve,
offsetof (struct vec_prefix, vec),
sizeof (void *), false
PASS_MEM_STAT);
}
void *
vec_gc_p_reserve_exact (void *vec, int reserve MEM_STAT_DECL)
{
return vec_gc_o_reserve_1 (vec, reserve,
offsetof (struct vec_prefix, vec),
sizeof (void *), true
PASS_MEM_STAT);
}
void *
vec_gc_o_reserve (void *vec, int reserve, size_t vec_offset, size_t elt_size
MEM_STAT_DECL)
{
return vec_gc_o_reserve_1 (vec, reserve, vec_offset, elt_size, false
PASS_MEM_STAT);
}
void *
vec_gc_o_reserve_exact (void *vec, int reserve, size_t vec_offset,
size_t elt_size MEM_STAT_DECL)
{
return vec_gc_o_reserve_1 (vec, reserve, vec_offset, elt_size, true
PASS_MEM_STAT);
}
static void *
vec_heap_o_reserve_1 (void *vec, int reserve, size_t vec_offset,
size_t elt_size, bool exact MEM_STAT_DECL)
{
struct vec_prefix *pfx = vec;
unsigned alloc = calculate_allocation (pfx, reserve, exact);
if (!alloc)
return NULL;
vec = xrealloc (vec, vec_offset + alloc * elt_size);
((struct vec_prefix *)vec)->alloc = alloc;
if (!pfx)
((struct vec_prefix *)vec)->num = 0;
return vec;
}
void *
vec_heap_p_reserve (void *vec, int reserve MEM_STAT_DECL)
{
return vec_heap_o_reserve_1 (vec, reserve,
offsetof (struct vec_prefix, vec),
sizeof (void *), false
PASS_MEM_STAT);
}
void *
vec_heap_p_reserve_exact (void *vec, int reserve MEM_STAT_DECL)
{
return vec_heap_o_reserve_1 (vec, reserve,
offsetof (struct vec_prefix, vec),
sizeof (void *), true
PASS_MEM_STAT);
}
void *
vec_heap_o_reserve (void *vec, int reserve, size_t vec_offset, size_t elt_size
MEM_STAT_DECL)
{
return vec_heap_o_reserve_1 (vec, reserve, vec_offset, elt_size, false
PASS_MEM_STAT);
}
void *
vec_heap_o_reserve_exact (void *vec, int reserve, size_t vec_offset,
size_t elt_size MEM_STAT_DECL)
{
return vec_heap_o_reserve_1 (vec, reserve, vec_offset, elt_size, true
PASS_MEM_STAT);
}
#if ENABLE_CHECKING
void
vec_assert_fail (const char *op, const char *struct_name,
const char *file, unsigned int line, const char *function)
{
internal_error ("vector %s %s domain error, in %s at %s:%u",
struct_name, op, function, trim_filename (file), line);
}
#endif