ash: use bbox wrappers for malloc etc instead of homegrown ones
function old new delta popstring 134 140 +6 ckmalloc 9 - -9 ckstrdup 22 - -22 ckrealloc 24 - -24 ckzalloc 28 - -28 ------------------------------------------------------------------------------ (add/remove: 0/4 grow/shrink: 1/0 up/down: 6/-83) Total: -77 bytes Signed-off-by: Denys Vlasenko <vda.linux@googlemail.com>
This commit is contained in:
parent
0e5e4eaf7b
commit
e7670ff81d
78
shell/ash.c
78
shell/ash.c
@ -1155,6 +1155,49 @@ errmsg(int e, const char *em)
|
||||
|
||||
/* ============ Memory allocation */
|
||||
|
||||
#if 0
|
||||
/* I consider these wrappers nearly useless:
|
||||
* ok, they return you to nearest exception handler, but
|
||||
* how much memory do you leak in the process, making
|
||||
* memory starvation worse?
|
||||
*/
|
||||
static void *
|
||||
ckrealloc(void * p, size_t nbytes)
|
||||
{
|
||||
p = realloc(p, nbytes);
|
||||
if (!p)
|
||||
ash_msg_and_raise_error(bb_msg_memory_exhausted);
|
||||
return p;
|
||||
}
|
||||
|
||||
static void *
|
||||
ckmalloc(size_t nbytes)
|
||||
{
|
||||
return ckrealloc(NULL, nbytes);
|
||||
}
|
||||
|
||||
static void *
|
||||
ckzalloc(size_t nbytes)
|
||||
{
|
||||
return memset(ckmalloc(nbytes), 0, nbytes);
|
||||
}
|
||||
|
||||
static char *
|
||||
ckstrdup(const char *s)
|
||||
{
|
||||
char *p = strdup(s);
|
||||
if (!p)
|
||||
ash_msg_and_raise_error(bb_msg_memory_exhausted);
|
||||
return p;
|
||||
}
|
||||
#else
|
||||
/* Using bbox equivalents. They exit if out of memory */
|
||||
# define ckrealloc xrealloc
|
||||
# define ckmalloc xmalloc
|
||||
# define ckzalloc xzalloc
|
||||
# define ckstrdup xstrdup
|
||||
#endif
|
||||
|
||||
/*
|
||||
* It appears that grabstackstr() will barf with such alignments
|
||||
* because stalloc() will return a string allocated in a new stackblock.
|
||||
@ -1210,43 +1253,10 @@ extern struct globals_memstack *const ash_ptr_to_globals_memstack;
|
||||
herefd = -1; \
|
||||
} while (0)
|
||||
|
||||
|
||||
#define stackblock() ((void *)g_stacknxt)
|
||||
#define stackblocksize() g_stacknleft
|
||||
|
||||
|
||||
static void *
|
||||
ckrealloc(void * p, size_t nbytes)
|
||||
{
|
||||
p = realloc(p, nbytes);
|
||||
if (!p)
|
||||
ash_msg_and_raise_error(bb_msg_memory_exhausted);
|
||||
return p;
|
||||
}
|
||||
|
||||
static void *
|
||||
ckmalloc(size_t nbytes)
|
||||
{
|
||||
return ckrealloc(NULL, nbytes);
|
||||
}
|
||||
|
||||
static void *
|
||||
ckzalloc(size_t nbytes)
|
||||
{
|
||||
return memset(ckmalloc(nbytes), 0, nbytes);
|
||||
}
|
||||
|
||||
/*
|
||||
* Make a copy of a string in safe storage.
|
||||
*/
|
||||
static char *
|
||||
ckstrdup(const char *s)
|
||||
{
|
||||
char *p = strdup(s);
|
||||
if (!p)
|
||||
ash_msg_and_raise_error(bb_msg_memory_exhausted);
|
||||
return p;
|
||||
}
|
||||
|
||||
/*
|
||||
* Parse trees for commands are allocated in lifo order, so we use a stack
|
||||
* to make this more efficient, and also to avoid all sorts of exception
|
||||
|
Loading…
Reference in New Issue
Block a user