e9852b5776
This is the first header refactoring diff, #533. It splits the assert and util components into separate, hermetic, header files. In the process, it splits out two of the large sub-components of util (the stdio.h replacement, and bit manipulation routines) into their own components (malloc_io.h and bit_util.h). This is mostly to break up cyclic dependencies, but it also breaks off a good chunk of the catch-all-ness of util, which is nice.
72 lines
1.5 KiB
C
72 lines
1.5 KiB
C
#ifndef JEMALLOC_INTERNAL_UTIL_H
|
|
#define JEMALLOC_INTERNAL_UTIL_H
|
|
|
|
#define UTIL_INLINE static inline
|
|
|
|
/* Junk fill patterns. */
|
|
#ifndef JEMALLOC_ALLOC_JUNK
|
|
# define JEMALLOC_ALLOC_JUNK ((uint8_t)0xa5)
|
|
#endif
|
|
#ifndef JEMALLOC_FREE_JUNK
|
|
# define JEMALLOC_FREE_JUNK ((uint8_t)0x5a)
|
|
#endif
|
|
|
|
/*
|
|
* Wrap a cpp argument that contains commas such that it isn't broken up into
|
|
* multiple arguments.
|
|
*/
|
|
#define JEMALLOC_ARG_CONCAT(...) __VA_ARGS__
|
|
|
|
/* cpp macro definition stringification. */
|
|
#define STRINGIFY_HELPER(x) #x
|
|
#define STRINGIFY(x) STRINGIFY_HELPER(x)
|
|
|
|
/*
|
|
* 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
|
|
|
|
#ifdef __GNUC__
|
|
# define likely(x) __builtin_expect(!!(x), 1)
|
|
# define unlikely(x) __builtin_expect(!!(x), 0)
|
|
#else
|
|
# define likely(x) !!(x)
|
|
# define unlikely(x) !!(x)
|
|
#endif
|
|
|
|
#if !defined(JEMALLOC_INTERNAL_UNREACHABLE)
|
|
# error JEMALLOC_INTERNAL_UNREACHABLE should have been defined by configure
|
|
#endif
|
|
|
|
#define unreachable() JEMALLOC_INTERNAL_UNREACHABLE()
|
|
|
|
/* Set error code. */
|
|
UTIL_INLINE void
|
|
set_errno(int errnum) {
|
|
#ifdef _WIN32
|
|
SetLastError(errnum);
|
|
#else
|
|
errno = errnum;
|
|
#endif
|
|
}
|
|
|
|
/* Get last error code. */
|
|
UTIL_INLINE int
|
|
get_errno(void) {
|
|
#ifdef _WIN32
|
|
return GetLastError();
|
|
#else
|
|
return errno;
|
|
#endif
|
|
}
|
|
|
|
#undef UTIL_INLINE
|
|
|
|
#endif /* JEMALLOC_INTERNAL_UTIL_H */
|