/**
* g_realloc:
* @mem: the memory to reallocate
* @n_bytes: new size of the memory in bytes
*
* Reallocates the memory pointed to by @mem, so that it now has space for
* @n_bytes bytes of memory. It returns the new address of the memory, which may
* have been moved. @mem may be %NULL, in which case it's considered to
* have zero-length. @n_bytes may be 0, in which case %NULL will be returned
* and @mem will be freed unless it is %NULL.
*
* Returns: the new address of the allocated memory
*/
gpointer
g_realloc (gpointer mem,
gsize n_bytes)
{
gpointer newmem;
if (G_UNLIKELY (!g_mem_initialized))
g_mem_init_nomessage();
if (G_LIKELY (n_bytes))
{
newmem = glib_mem_vtable.realloc (mem, n_bytes);
TRACE (GLIB_MEM_REALLOC((void*) newmem, (void*)mem, (unsigned int) n_bytes, 0));
if (newmem)
return newmem;
g_error ("%s: failed to allocate %"G_GSIZE_FORMAT" bytes",
G_STRLOC, n_bytes);
}
if (mem)
glib_mem_vtable.free (mem);
TRACE (GLIB_MEM_REALLOC((void*) NULL, (void*)mem, 0, 0));
return NULL;
}
void
g_free (gpointer mem)
{
if (G_UNLIKELY (!g_mem_initialized))
g_mem_init_nomessage();
if (G_LIKELY (mem))
glib_mem_vtable.free (mem);
}
/**
* g_free:
* @mem: the memory to free
*
* Frees the memory pointed to by @mem.
* If @mem is %NULL it simply returns.
*/
void
g_free (gpointer mem)
{
if (G_UNLIKELY (!g_mem_initialized))
g_mem_init_nomessage();
if (G_LIKELY (mem))
glib_mem_vtable.free (mem);
TRACE(GLIB_MEM_FREE((void*) mem));
}
gpointer
g_try_malloc (gsize n_bytes)
{
if (G_UNLIKELY (!g_mem_initialized))
g_mem_init_nomessage();
if (G_LIKELY (n_bytes))
return glib_mem_vtable.try_malloc (n_bytes);
else
return NULL;
}
void
_g_mem_thread_init_noprivate_nomessage (void)
{
/* we may only create mutexes here, locking/
* unlocking a mutex does not yet work.
*/
g_mem_init_nomessage();
#ifndef G_DISABLE_CHECKS
gmem_profile_mutex = g_mutex_new ();
#endif
}
gpointer
g_try_realloc (gpointer mem,
gsize n_bytes)
{
if (G_UNLIKELY (!g_mem_initialized))
g_mem_init_nomessage();
if (G_LIKELY (n_bytes))
return glib_mem_vtable.try_realloc (mem, n_bytes);
if (mem)
glib_mem_vtable.free (mem);
return NULL;
}
gpointer
g_malloc0_n (gsize n_blocks,
gsize n_block_bytes)
{
if (SIZE_OVERFLOWS (n_blocks, n_block_bytes))
{
if (G_UNLIKELY (!g_mem_initialized))
g_mem_init_nomessage();
g_error ("%s: overflow allocating %"G_GSIZE_FORMAT"*%"G_GSIZE_FORMAT" bytes",
G_STRLOC, n_blocks, n_block_bytes);
}
return g_malloc0 (n_blocks * n_block_bytes);
}
/**
* g_try_malloc:
* @n_bytes: number of bytes to allocate.
*
* Attempts to allocate @n_bytes, and returns %NULL on failure.
* Contrast with g_malloc(), which aborts the program on failure.
*
* Returns: the allocated memory, or %NULL.
*/
gpointer
g_try_malloc (gsize n_bytes)
{
gpointer mem;
if (G_UNLIKELY (!g_mem_initialized))
g_mem_init_nomessage();
if (G_LIKELY (n_bytes))
mem = glib_mem_vtable.try_malloc (n_bytes);
else
mem = NULL;
TRACE (GLIB_MEM_ALLOC((void*) mem, (unsigned int) n_bytes, 0, 1));
return mem;
}
/**
* g_try_malloc0:
* @n_bytes: number of bytes to allocate
*
* Attempts to allocate @n_bytes, initialized to 0's, and returns %NULL on
* failure. Contrast with g_malloc0(), which aborts the program on failure.
*
* Since: 2.8
* Returns: the allocated memory, or %NULL
*/
gpointer
g_try_malloc0 (gsize n_bytes)
{
gpointer mem;
if (G_UNLIKELY (!g_mem_initialized))
g_mem_init_nomessage();
if (G_LIKELY (n_bytes))
mem = glib_mem_vtable.try_malloc (n_bytes);
else
mem = NULL;
if (mem)
memset (mem, 0, n_bytes);
return mem;
}
void
g_mem_profile (void)
{
guint local_data[(MEM_PROFILE_TABLE_SIZE + 1) * 8 * sizeof (profile_data[0])];
gsize local_allocs;
gsize local_zinit;
gsize local_frees;
if (G_UNLIKELY (!g_mem_initialized))
g_mem_init_nomessage();
g_mutex_lock (gmem_profile_mutex);
local_allocs = profile_allocs;
local_zinit = profile_zinit;
local_frees = profile_frees;
if (!profile_data)
{
g_mutex_unlock (gmem_profile_mutex);
return;
}
memcpy (local_data, profile_data,
(MEM_PROFILE_TABLE_SIZE + 1) * 8 * sizeof (profile_data[0]));
g_mutex_unlock (gmem_profile_mutex);
g_print ("GLib Memory statistics (successful operations):\n");
profile_print_locked (local_data, TRUE);
g_print ("GLib Memory statistics (failing operations):\n");
profile_print_locked (local_data, FALSE);
g_print ("Total bytes: allocated=%"G_GSIZE_FORMAT", "
"zero-initialized=%"G_GSIZE_FORMAT" (%.2f%%), "
"freed=%"G_GSIZE_FORMAT" (%.2f%%), "
"remaining=%"G_GSIZE_FORMAT"\n",
local_allocs,
local_zinit,
((gdouble) local_zinit) / local_allocs * 100.0,
local_frees,
((gdouble) local_frees) / local_allocs * 100.0,
local_allocs - local_frees);
}
gpointer
g_malloc0 (gsize n_bytes)
{
if (G_UNLIKELY (!g_mem_initialized))
g_mem_init_nomessage();
if (G_LIKELY (n_bytes))
{
gpointer mem;
mem = glib_mem_vtable.calloc (1, n_bytes);
if (mem)
return mem;
g_error ("%s: failed to allocate %"G_GSIZE_FORMAT" bytes",
G_STRLOC, n_bytes);
}
return NULL;
}
/* --- functions --- */
gpointer
g_malloc (gsize n_bytes)
{
if (G_UNLIKELY (!g_mem_initialized))
g_mem_init_nomessage();
if (G_LIKELY (n_bytes))
{
gpointer mem;
mem = glib_mem_vtable.malloc (n_bytes);
if (mem)
return mem;
#if NOT_NEEDED_FOR_NAVIT
g_error ("%s: failed to allocate %"G_GSIZE_FORMAT" bytes",
G_STRLOC, n_bytes);
#endif /* NOT_NEEDED_FOR_NAVIT */
}
return NULL;
}
gpointer
g_realloc (gpointer mem,
gsize n_bytes)
{
if (G_UNLIKELY (!g_mem_initialized))
g_mem_init_nomessage();
if (G_LIKELY (n_bytes))
{
mem = glib_mem_vtable.realloc (mem, n_bytes);
if (mem)
return mem;
g_error ("%s: failed to allocate %"G_GSIZE_FORMAT" bytes",
G_STRLOC, n_bytes);
}
if (mem)
glib_mem_vtable.free (mem);
return NULL;
}
/**
* g_try_realloc:
* @mem: previously-allocated memory, or %NULL.
* @n_bytes: number of bytes to allocate.
*
* Attempts to realloc @mem to a new size, @n_bytes, and returns %NULL
* on failure. Contrast with g_realloc(), which aborts the program
* on failure. If @mem is %NULL, behaves the same as g_try_malloc().
*
* Returns: the allocated memory, or %NULL.
*/
gpointer
g_try_realloc (gpointer mem,
gsize n_bytes)
{
gpointer newmem;
if (G_UNLIKELY (!g_mem_initialized))
g_mem_init_nomessage();
if (G_LIKELY (n_bytes))
newmem = glib_mem_vtable.try_realloc (mem, n_bytes);
else
{
newmem = NULL;
if (mem)
glib_mem_vtable.free (mem);
}
TRACE (GLIB_MEM_REALLOC((void*) newmem, (void*)mem, (unsigned int) n_bytes, 1));
return newmem;
}
/**
* g_malloc0:
* @n_bytes: the number of bytes to allocate
*
* Allocates @n_bytes bytes of memory, initialized to 0's.
* If @n_bytes is 0 it returns %NULL.
*
* Returns: a pointer to the allocated memory
*/
gpointer
g_malloc0 (gsize n_bytes)
{
if (G_UNLIKELY (!g_mem_initialized))
g_mem_init_nomessage();
if (G_LIKELY (n_bytes))
{
gpointer mem;
mem = glib_mem_vtable.calloc (1, n_bytes);
TRACE (GLIB_MEM_ALLOC((void*) mem, (unsigned int) n_bytes, 1, 0));
if (mem)
return mem;
g_error ("%s: failed to allocate %"G_GSIZE_FORMAT" bytes",
G_STRLOC, n_bytes);
}
TRACE(GLIB_MEM_ALLOC((void*) NULL, (int) n_bytes, 1, 0));
return NULL;
}
