util.h revision 6556e28be15d9acd8f3835fb9fad90145e1edbff
1d81e4bdd5c991bd5642c8b859ef1f752b51cd9beJason Evans/******************************************************************************/ 2d81e4bdd5c991bd5642c8b859ef1f752b51cd9beJason Evans#ifdef JEMALLOC_H_TYPES 3d81e4bdd5c991bd5642c8b859ef1f752b51cd9beJason Evans 4d81e4bdd5c991bd5642c8b859ef1f752b51cd9beJason Evans/* Size of stack-allocated buffer passed to buferror(). */ 5d81e4bdd5c991bd5642c8b859ef1f752b51cd9beJason Evans#define BUFERROR_BUF 64 6d81e4bdd5c991bd5642c8b859ef1f752b51cd9beJason Evans 7d81e4bdd5c991bd5642c8b859ef1f752b51cd9beJason Evans/* 8cd9a1346e96f71bdecdc654ea50fc62d76371e74Jason Evans * Size of stack-allocated buffer used by malloc_{,v,vc}printf(). This must be 9cd9a1346e96f71bdecdc654ea50fc62d76371e74Jason Evans * large enough for all possible uses within jemalloc. 10824d34e5b7f5cf00bf472ec79f7ec1c6e3474114Jason Evans */ 11824d34e5b7f5cf00bf472ec79f7ec1c6e3474114Jason Evans#define MALLOC_PRINTF_BUFSIZE 4096 12824d34e5b7f5cf00bf472ec79f7ec1c6e3474114Jason Evans 13824d34e5b7f5cf00bf472ec79f7ec1c6e3474114Jason Evans/* 14cd9a1346e96f71bdecdc654ea50fc62d76371e74Jason Evans * Wrap a cpp argument that contains commas such that it isn't broken up into 15cd9a1346e96f71bdecdc654ea50fc62d76371e74Jason Evans * multiple arguments. 16cd9a1346e96f71bdecdc654ea50fc62d76371e74Jason Evans */ 17cd9a1346e96f71bdecdc654ea50fc62d76371e74Jason Evans#define JEMALLOC_CONCAT(...) __VA_ARGS__ 18cd9a1346e96f71bdecdc654ea50fc62d76371e74Jason Evans 19cd9a1346e96f71bdecdc654ea50fc62d76371e74Jason Evans/* 209225a1991a58190207cca2ff3cdba966bb322dd5Jason Evans * Silence compiler warnings due to uninitialized values. This is used 219225a1991a58190207cca2ff3cdba966bb322dd5Jason Evans * wherever the compiler fails to recognize that the variable is never used 229225a1991a58190207cca2ff3cdba966bb322dd5Jason Evans * uninitialized. 239225a1991a58190207cca2ff3cdba966bb322dd5Jason Evans */ 249225a1991a58190207cca2ff3cdba966bb322dd5Jason Evans#ifdef JEMALLOC_CC_SILENCE 259225a1991a58190207cca2ff3cdba966bb322dd5Jason Evans# define JEMALLOC_CC_SILENCE_INIT(v) = v 269225a1991a58190207cca2ff3cdba966bb322dd5Jason Evans#else 279225a1991a58190207cca2ff3cdba966bb322dd5Jason Evans# define JEMALLOC_CC_SILENCE_INIT(v) 289225a1991a58190207cca2ff3cdba966bb322dd5Jason Evans#endif 299225a1991a58190207cca2ff3cdba966bb322dd5Jason Evans 309225a1991a58190207cca2ff3cdba966bb322dd5Jason Evans/* 31d81e4bdd5c991bd5642c8b859ef1f752b51cd9beJason Evans * Define a custom assert() in order to reduce the chances of deadlock during 32d81e4bdd5c991bd5642c8b859ef1f752b51cd9beJason Evans * assertion failure. 33d81e4bdd5c991bd5642c8b859ef1f752b51cd9beJason Evans */ 34d81e4bdd5c991bd5642c8b859ef1f752b51cd9beJason Evans#ifndef assert 35d81e4bdd5c991bd5642c8b859ef1f752b51cd9beJason Evans#define assert(e) do { \ 36d81e4bdd5c991bd5642c8b859ef1f752b51cd9beJason Evans if (config_debug && !(e)) { \ 37d81e4bdd5c991bd5642c8b859ef1f752b51cd9beJason Evans malloc_printf( \ 38d81e4bdd5c991bd5642c8b859ef1f752b51cd9beJason Evans "<jemalloc>: %s:%d: Failed assertion: \"%s\"\n", \ 39d81e4bdd5c991bd5642c8b859ef1f752b51cd9beJason Evans __FILE__, __LINE__, #e); \ 40d81e4bdd5c991bd5642c8b859ef1f752b51cd9beJason Evans abort(); \ 41d81e4bdd5c991bd5642c8b859ef1f752b51cd9beJason Evans } \ 42d81e4bdd5c991bd5642c8b859ef1f752b51cd9beJason Evans} while (0) 43d81e4bdd5c991bd5642c8b859ef1f752b51cd9beJason Evans#endif 44d81e4bdd5c991bd5642c8b859ef1f752b51cd9beJason Evans 45d81e4bdd5c991bd5642c8b859ef1f752b51cd9beJason Evans#ifndef not_reached 46d81e4bdd5c991bd5642c8b859ef1f752b51cd9beJason Evans#define not_reached() do { \ 47d81e4bdd5c991bd5642c8b859ef1f752b51cd9beJason Evans if (config_debug) { \ 48d81e4bdd5c991bd5642c8b859ef1f752b51cd9beJason Evans malloc_printf( \ 49d81e4bdd5c991bd5642c8b859ef1f752b51cd9beJason Evans "<jemalloc>: %s:%d: Unreachable code reached\n", \ 50d81e4bdd5c991bd5642c8b859ef1f752b51cd9beJason Evans __FILE__, __LINE__); \ 51d81e4bdd5c991bd5642c8b859ef1f752b51cd9beJason Evans abort(); \ 52d81e4bdd5c991bd5642c8b859ef1f752b51cd9beJason Evans } \ 53d81e4bdd5c991bd5642c8b859ef1f752b51cd9beJason Evans} while (0) 54d81e4bdd5c991bd5642c8b859ef1f752b51cd9beJason Evans#endif 55d81e4bdd5c991bd5642c8b859ef1f752b51cd9beJason Evans 56d81e4bdd5c991bd5642c8b859ef1f752b51cd9beJason Evans#ifndef not_implemented 57d81e4bdd5c991bd5642c8b859ef1f752b51cd9beJason Evans#define not_implemented() do { \ 58d81e4bdd5c991bd5642c8b859ef1f752b51cd9beJason Evans if (config_debug) { \ 59d81e4bdd5c991bd5642c8b859ef1f752b51cd9beJason Evans malloc_printf("<jemalloc>: %s:%d: Not implemented\n", \ 60d81e4bdd5c991bd5642c8b859ef1f752b51cd9beJason Evans __FILE__, __LINE__); \ 61d81e4bdd5c991bd5642c8b859ef1f752b51cd9beJason Evans abort(); \ 62d81e4bdd5c991bd5642c8b859ef1f752b51cd9beJason Evans } \ 63d81e4bdd5c991bd5642c8b859ef1f752b51cd9beJason Evans} while (0) 64d81e4bdd5c991bd5642c8b859ef1f752b51cd9beJason Evans#endif 65d81e4bdd5c991bd5642c8b859ef1f752b51cd9beJason Evans 66d81e4bdd5c991bd5642c8b859ef1f752b51cd9beJason Evans#define assert_not_implemented(e) do { \ 67d81e4bdd5c991bd5642c8b859ef1f752b51cd9beJason Evans if (config_debug && !(e)) \ 68d81e4bdd5c991bd5642c8b859ef1f752b51cd9beJason Evans not_implemented(); \ 69d81e4bdd5c991bd5642c8b859ef1f752b51cd9beJason Evans} while (0) 70d81e4bdd5c991bd5642c8b859ef1f752b51cd9beJason Evans 716556e28be15d9acd8f3835fb9fad90145e1edbffJason Evans/* Use to assert a particular configuration, e.g., cassert(config_debug). */ 726556e28be15d9acd8f3835fb9fad90145e1edbffJason Evans#define cassert(c) do { \ 736556e28be15d9acd8f3835fb9fad90145e1edbffJason Evans if ((c) == false) \ 746556e28be15d9acd8f3835fb9fad90145e1edbffJason Evans not_reached(); \ 756556e28be15d9acd8f3835fb9fad90145e1edbffJason Evans} while (0) 766556e28be15d9acd8f3835fb9fad90145e1edbffJason Evans 77d81e4bdd5c991bd5642c8b859ef1f752b51cd9beJason Evans#endif /* JEMALLOC_H_TYPES */ 78d81e4bdd5c991bd5642c8b859ef1f752b51cd9beJason Evans/******************************************************************************/ 79d81e4bdd5c991bd5642c8b859ef1f752b51cd9beJason Evans#ifdef JEMALLOC_H_STRUCTS 80d81e4bdd5c991bd5642c8b859ef1f752b51cd9beJason Evans 81d81e4bdd5c991bd5642c8b859ef1f752b51cd9beJason Evans#endif /* JEMALLOC_H_STRUCTS */ 82d81e4bdd5c991bd5642c8b859ef1f752b51cd9beJason Evans/******************************************************************************/ 83d81e4bdd5c991bd5642c8b859ef1f752b51cd9beJason Evans#ifdef JEMALLOC_H_EXTERNS 84d81e4bdd5c991bd5642c8b859ef1f752b51cd9beJason Evans 85a14bce85e885f83c96116cc5438ae52d740f3727Mike Hommeyint buferror(char *buf, size_t buflen); 8641b6afb834b1f5250223678c52bd4f013d4234f6Jason Evansuintmax_t malloc_strtoumax(const char *nptr, char **endptr, int base); 87889ec59bd3ae3190fb715e64d8d15b6a1b47314aJason Evansvoid malloc_write(const char *s); 88d81e4bdd5c991bd5642c8b859ef1f752b51cd9beJason Evans 89d81e4bdd5c991bd5642c8b859ef1f752b51cd9beJason Evans/* 90d81e4bdd5c991bd5642c8b859ef1f752b51cd9beJason Evans * malloc_vsnprintf() supports a subset of snprintf(3) that avoids floating 91d81e4bdd5c991bd5642c8b859ef1f752b51cd9beJason Evans * point math. 92d81e4bdd5c991bd5642c8b859ef1f752b51cd9beJason Evans */ 93d81e4bdd5c991bd5642c8b859ef1f752b51cd9beJason Evansint malloc_vsnprintf(char *str, size_t size, const char *format, 94d81e4bdd5c991bd5642c8b859ef1f752b51cd9beJason Evans va_list ap); 95d81e4bdd5c991bd5642c8b859ef1f752b51cd9beJason Evansint malloc_snprintf(char *str, size_t size, const char *format, ...) 96d81e4bdd5c991bd5642c8b859ef1f752b51cd9beJason Evans JEMALLOC_ATTR(format(printf, 3, 4)); 97d81e4bdd5c991bd5642c8b859ef1f752b51cd9beJason Evansvoid malloc_vcprintf(void (*write_cb)(void *, const char *), void *cbopaque, 98d81e4bdd5c991bd5642c8b859ef1f752b51cd9beJason Evans const char *format, va_list ap); 99d81e4bdd5c991bd5642c8b859ef1f752b51cd9beJason Evansvoid malloc_cprintf(void (*write)(void *, const char *), void *cbopaque, 100d81e4bdd5c991bd5642c8b859ef1f752b51cd9beJason Evans const char *format, ...) JEMALLOC_ATTR(format(printf, 3, 4)); 101d81e4bdd5c991bd5642c8b859ef1f752b51cd9beJason Evansvoid malloc_printf(const char *format, ...) 102d81e4bdd5c991bd5642c8b859ef1f752b51cd9beJason Evans JEMALLOC_ATTR(format(printf, 1, 2)); 103d81e4bdd5c991bd5642c8b859ef1f752b51cd9beJason Evans 104d81e4bdd5c991bd5642c8b859ef1f752b51cd9beJason Evans#endif /* JEMALLOC_H_EXTERNS */ 105d81e4bdd5c991bd5642c8b859ef1f752b51cd9beJason Evans/******************************************************************************/ 106d81e4bdd5c991bd5642c8b859ef1f752b51cd9beJason Evans#ifdef JEMALLOC_H_INLINES 107d81e4bdd5c991bd5642c8b859ef1f752b51cd9beJason Evans 108d81e4bdd5c991bd5642c8b859ef1f752b51cd9beJason Evans#ifndef JEMALLOC_ENABLE_INLINE 109d81e4bdd5c991bd5642c8b859ef1f752b51cd9beJason Evanssize_t pow2_ceil(size_t x); 110d81e4bdd5c991bd5642c8b859ef1f752b51cd9beJason Evansvoid malloc_write(const char *s); 111a14bce85e885f83c96116cc5438ae52d740f3727Mike Hommeyvoid set_errno(int errnum); 112a14bce85e885f83c96116cc5438ae52d740f3727Mike Hommeyint get_errno(void); 113d81e4bdd5c991bd5642c8b859ef1f752b51cd9beJason Evans#endif 114d81e4bdd5c991bd5642c8b859ef1f752b51cd9beJason Evans 115d81e4bdd5c991bd5642c8b859ef1f752b51cd9beJason Evans#if (defined(JEMALLOC_ENABLE_INLINE) || defined(JEMALLOC_UTIL_C_)) 116d81e4bdd5c991bd5642c8b859ef1f752b51cd9beJason Evans/* Compute the smallest power of 2 that is >= x. */ 117d81e4bdd5c991bd5642c8b859ef1f752b51cd9beJason EvansJEMALLOC_INLINE size_t 118d81e4bdd5c991bd5642c8b859ef1f752b51cd9beJason Evanspow2_ceil(size_t x) 119d81e4bdd5c991bd5642c8b859ef1f752b51cd9beJason Evans{ 120d81e4bdd5c991bd5642c8b859ef1f752b51cd9beJason Evans 121d81e4bdd5c991bd5642c8b859ef1f752b51cd9beJason Evans x--; 122d81e4bdd5c991bd5642c8b859ef1f752b51cd9beJason Evans x |= x >> 1; 123d81e4bdd5c991bd5642c8b859ef1f752b51cd9beJason Evans x |= x >> 2; 124d81e4bdd5c991bd5642c8b859ef1f752b51cd9beJason Evans x |= x >> 4; 125d81e4bdd5c991bd5642c8b859ef1f752b51cd9beJason Evans x |= x >> 8; 126d81e4bdd5c991bd5642c8b859ef1f752b51cd9beJason Evans x |= x >> 16; 127d81e4bdd5c991bd5642c8b859ef1f752b51cd9beJason Evans#if (LG_SIZEOF_PTR == 3) 128d81e4bdd5c991bd5642c8b859ef1f752b51cd9beJason Evans x |= x >> 32; 129d81e4bdd5c991bd5642c8b859ef1f752b51cd9beJason Evans#endif 130d81e4bdd5c991bd5642c8b859ef1f752b51cd9beJason Evans x++; 131d81e4bdd5c991bd5642c8b859ef1f752b51cd9beJason Evans return (x); 132d81e4bdd5c991bd5642c8b859ef1f752b51cd9beJason Evans} 133d81e4bdd5c991bd5642c8b859ef1f752b51cd9beJason Evans 134a14bce85e885f83c96116cc5438ae52d740f3727Mike Hommey/* Sets error code */ 135a14bce85e885f83c96116cc5438ae52d740f3727Mike HommeyJEMALLOC_INLINE void 136a14bce85e885f83c96116cc5438ae52d740f3727Mike Hommeyset_errno(int errnum) 137a14bce85e885f83c96116cc5438ae52d740f3727Mike Hommey{ 138a14bce85e885f83c96116cc5438ae52d740f3727Mike Hommey 139a14bce85e885f83c96116cc5438ae52d740f3727Mike Hommey#ifdef _WIN32 140a14bce85e885f83c96116cc5438ae52d740f3727Mike Hommey SetLastError(errnum); 141a14bce85e885f83c96116cc5438ae52d740f3727Mike Hommey#else 142a14bce85e885f83c96116cc5438ae52d740f3727Mike Hommey errno = errnum; 143a14bce85e885f83c96116cc5438ae52d740f3727Mike Hommey#endif 144a14bce85e885f83c96116cc5438ae52d740f3727Mike Hommey} 145a14bce85e885f83c96116cc5438ae52d740f3727Mike Hommey 146a14bce85e885f83c96116cc5438ae52d740f3727Mike Hommey/* Get last error code */ 147a14bce85e885f83c96116cc5438ae52d740f3727Mike HommeyJEMALLOC_INLINE int 148a14bce85e885f83c96116cc5438ae52d740f3727Mike Hommeyget_errno(void) 149a14bce85e885f83c96116cc5438ae52d740f3727Mike Hommey{ 150a14bce85e885f83c96116cc5438ae52d740f3727Mike Hommey 151a14bce85e885f83c96116cc5438ae52d740f3727Mike Hommey#ifdef _WIN32 1527cdea3973cab8640d1f44c7638ed5e30ed18be24Mike Hommey return (GetLastError()); 153a14bce85e885f83c96116cc5438ae52d740f3727Mike Hommey#else 1547cdea3973cab8640d1f44c7638ed5e30ed18be24Mike Hommey return (errno); 155a14bce85e885f83c96116cc5438ae52d740f3727Mike Hommey#endif 156a14bce85e885f83c96116cc5438ae52d740f3727Mike Hommey} 157d81e4bdd5c991bd5642c8b859ef1f752b51cd9beJason Evans#endif 158d81e4bdd5c991bd5642c8b859ef1f752b51cd9beJason Evans 159d81e4bdd5c991bd5642c8b859ef1f752b51cd9beJason Evans#endif /* JEMALLOC_H_INLINES */ 160d81e4bdd5c991bd5642c8b859ef1f752b51cd9beJason Evans/******************************************************************************/ 161