cc9e626ea9
Refactor permuted backtrace test allocation that was originally used only by the prof_accum test, so that it can be used by other heap profiling test binaries.
32 lines
825 B
C
32 lines
825 B
C
/* btalloc() provides a mechanism for allocating via permuted backtraces. */
|
|
void *btalloc(size_t size, unsigned bits);
|
|
|
|
#define btalloc_n_proto(n) \
|
|
void *btalloc_##n(size_t size, unsigned bits);
|
|
btalloc_n_proto(0)
|
|
btalloc_n_proto(1)
|
|
|
|
#define btalloc_n_gen(n) \
|
|
void * \
|
|
btalloc_##n(size_t size, unsigned bits) \
|
|
{ \
|
|
void *p; \
|
|
\
|
|
if (bits == 0) \
|
|
p = mallocx(size, 0); \
|
|
else { \
|
|
switch (bits & 0x1U) { \
|
|
case 0: \
|
|
p = (btalloc_0(size, bits >> 1)); \
|
|
break; \
|
|
case 1: \
|
|
p = (btalloc_1(size, bits >> 1)); \
|
|
break; \
|
|
default: not_reached(); \
|
|
} \
|
|
} \
|
|
/* Intentionally sabotage tail call optimization. */ \
|
|
assert_ptr_not_null(p, "Unexpected mallocx() failure"); \
|
|
return (p); \
|
|
}
|