project-base/server-skynet-source-3rd-jemalloc
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Add JEMALLOC_CC_SILENCE_INIT().

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Add JEMALLOC_CC_SILENCE_INIT(), which provides succinct syntax for
initializing a variable to avoid a spurious compiler warning.
This commit is contained in:
Jason Evans 2012-03-23 15:39:07 -07:00
parent cd9a1346e9
commit 9225a1991a
4 changed files with 23 additions and 44 deletions
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6
include/jemalloc/internal/jemalloc_internal.h.in
View File

@ -611,11 +611,7 @@ ipalloc(size_t usize, size_t alignment, bool zero)
if (usize <= arena_maxclass && alignment <= PAGE_SIZE)
ret = arena_malloc(usize, zero);
else {
size_t run_size
#ifdef JEMALLOC_CC_SILENCE
= 0
#endif
;
size_t run_size JEMALLOC_CC_SILENCE_INIT(0);
/*
* Ideally we would only ever call sa2u() once per aligned

11
include/jemalloc/internal/util.h
View File

@ -16,6 +16,17 @@
*/
#define JEMALLOC_CONCAT(...) __VA_ARGS__
/*
* Silence compiler warnings due to uninitialized values. This is used
* wherever the compiler fails to recognize that the variable is never used
* uninitialized.
*/
#ifdef JEMALLOC_CC_SILENCE
# define JEMALLOC_CC_SILENCE_INIT(v) = v
#else
# define JEMALLOC_CC_SILENCE_INIT(v)
#endif
/*
* Define a custom assert() in order to reduce the chances of deadlock during
* assertion failure.

42
src/jemalloc.c
View File

@ -751,11 +751,7 @@ je_malloc(size_t size)
{
void *ret;
size_t usize;
prof_thr_cnt_t *cnt
#ifdef JEMALLOC_CC_SILENCE
= NULL
#endif
;
prof_thr_cnt_t *cnt JEMALLOC_CC_SILENCE_INIT(NULL);
if (malloc_init()) {
ret = NULL;
@ -818,11 +814,7 @@ imemalign(void **memptr, size_t alignment, size_t size,
int ret;
size_t usize;
void *result;
prof_thr_cnt_t *cnt
#ifdef JEMALLOC_CC_SILENCE
= NULL
#endif
;
prof_thr_cnt_t *cnt JEMALLOC_CC_SILENCE_INIT(NULL);
assert(min_alignment != 0);
@ -932,11 +924,7 @@ je_calloc(size_t num, size_t size)
void *ret;
size_t num_size;
size_t usize;
prof_thr_cnt_t *cnt
#ifdef JEMALLOC_CC_SILENCE
= NULL
#endif
;
prof_thr_cnt_t *cnt JEMALLOC_CC_SILENCE_INIT(NULL);
if (malloc_init()) {
num_size = 0;
@ -1010,16 +998,8 @@ je_realloc(void *ptr, size_t size)
void *ret;
size_t usize;
size_t old_size = 0;
prof_thr_cnt_t *cnt
#ifdef JEMALLOC_CC_SILENCE
= NULL
#endif
;
prof_ctx_t *old_ctx
#ifdef JEMALLOC_CC_SILENCE
= NULL
#endif
;
prof_thr_cnt_t *cnt JEMALLOC_CC_SILENCE_INIT(NULL);
prof_ctx_t *old_ctx JEMALLOC_CC_SILENCE_INIT(NULL);
if (size == 0) {
if (ptr != NULL) {
@ -1173,11 +1153,7 @@ JEMALLOC_ATTR(visibility("default"))
void *
je_memalign(size_t alignment, size_t size)
{
void *ret
#ifdef JEMALLOC_CC_SILENCE
= NULL
#endif
;
void *ret JEMALLOC_CC_SILENCE_INIT(NULL);
imemalign(&ret, alignment, size, 1);
return (ret);
}
@ -1189,11 +1165,7 @@ JEMALLOC_ATTR(visibility("default"))
void *
je_valloc(size_t size)
{
void *ret
#ifdef JEMALLOC_CC_SILENCE
= NULL
#endif
;
void *ret JEMALLOC_CC_SILENCE_INIT(NULL);
imemalign(&ret, PAGE_SIZE, size, 1);
return (ret);
}

8
src/util.c
View File

@ -353,7 +353,7 @@ malloc_vsnprintf(char *str, size_t size, const char *format, va_list ap)
char *s;
size_t slen;
case 'd': case 'i': {
intmax_t val;
intmax_t val JEMALLOC_CC_SILENCE_INIT(0);
char buf[D2S_BUFSIZE];
GET_ARG_NUMERIC(val, len);
@ -363,7 +363,7 @@ malloc_vsnprintf(char *str, size_t size, const char *format, va_list ap)
f++;
break;
} case 'o': {
uintmax_t val;
uintmax_t val JEMALLOC_CC_SILENCE_INIT(0);
char buf[O2S_BUFSIZE];
GET_ARG_NUMERIC(val, len);
@ -372,7 +372,7 @@ malloc_vsnprintf(char *str, size_t size, const char *format, va_list ap)
f++;
break;
} case 'u': {
uintmax_t val;
uintmax_t val JEMALLOC_CC_SILENCE_INIT(0);
char buf[U2S_BUFSIZE];
GET_ARG_NUMERIC(val, len);
@ -381,7 +381,7 @@ malloc_vsnprintf(char *str, size_t size, const char *format, va_list ap)
f++;
break;
} case 'x': case 'X': {
uintmax_t val;
uintmax_t val JEMALLOC_CC_SILENCE_INIT(0);
char buf[X2S_BUFSIZE];
GET_ARG_NUMERIC(val, len);