diff options
Diffstat (limited to 'extra/jemalloc/src/util.c')
| -rw-r--r-- | extra/jemalloc/src/util.c | 641 |
1 files changed, 0 insertions, 641 deletions
diff --git a/extra/jemalloc/src/util.c b/extra/jemalloc/src/util.c deleted file mode 100644 index b3a01143698..00000000000 --- a/extra/jemalloc/src/util.c +++ /dev/null @@ -1,641 +0,0 @@ -#define assert(e) do { \ - if (config_debug && !(e)) { \ - malloc_write("<jemalloc>: Failed assertion\n"); \ - abort(); \ - } \ -} while (0) - -#define not_reached() do { \ - if (config_debug) { \ - malloc_write("<jemalloc>: Unreachable code reached\n"); \ - abort(); \ - } \ -} while (0) - -#define not_implemented() do { \ - if (config_debug) { \ - malloc_write("<jemalloc>: Not implemented\n"); \ - abort(); \ - } \ -} while (0) - -#define JEMALLOC_UTIL_C_ -#include "jemalloc/internal/jemalloc_internal.h" - -/******************************************************************************/ -/* Function prototypes for non-inline static functions. */ - -static void wrtmessage(void *cbopaque, const char *s); -#define U2S_BUFSIZE ((1U << (LG_SIZEOF_INTMAX_T + 3)) + 1) -static char *u2s(uintmax_t x, unsigned base, bool uppercase, char *s, - size_t *slen_p); -#define D2S_BUFSIZE (1 + U2S_BUFSIZE) -static char *d2s(intmax_t x, char sign, char *s, size_t *slen_p); -#define O2S_BUFSIZE (1 + U2S_BUFSIZE) -static char *o2s(uintmax_t x, bool alt_form, char *s, size_t *slen_p); -#define X2S_BUFSIZE (2 + U2S_BUFSIZE) -static char *x2s(uintmax_t x, bool alt_form, bool uppercase, char *s, - size_t *slen_p); - -/******************************************************************************/ - -/* malloc_message() setup. */ -static void -wrtmessage(void *cbopaque, const char *s) -{ - -#ifdef SYS_write - /* - * Use syscall(2) rather than write(2) when possible in order to avoid - * the possibility of memory allocation within libc. This is necessary - * on FreeBSD; most operating systems do not have this problem though. - */ - UNUSED int result = syscall(SYS_write, STDERR_FILENO, s, strlen(s)); -#else - UNUSED int result = write(STDERR_FILENO, s, strlen(s)); -#endif -} - -JEMALLOC_EXPORT void (*je_malloc_message)(void *, const char *s); - -/* - * Wrapper around malloc_message() that avoids the need for - * je_malloc_message(...) throughout the code. - */ -void -malloc_write(const char *s) -{ - - if (je_malloc_message != NULL) - je_malloc_message(NULL, s); - else - wrtmessage(NULL, s); -} - -/* - * glibc provides a non-standard strerror_r() when _GNU_SOURCE is defined, so - * provide a wrapper. - */ -int -buferror(char *buf, size_t buflen) -{ - -#ifdef _WIN32 - FormatMessageA(FORMAT_MESSAGE_FROM_SYSTEM, NULL, GetLastError(), 0, - (LPSTR)buf, buflen, NULL); - return (0); -#elif defined(_GNU_SOURCE) - char *b = strerror_r(errno, buf, buflen); - if (b != buf) { - strncpy(buf, b, buflen); - buf[buflen-1] = '\0'; - } - return (0); -#else - return (strerror_r(errno, buf, buflen)); -#endif -} - -uintmax_t -malloc_strtoumax(const char *nptr, char **endptr, int base) -{ - uintmax_t ret, digit; - int b; - bool neg; - const char *p, *ns; - - if (base < 0 || base == 1 || base > 36) { - set_errno(EINVAL); - return (UINTMAX_MAX); - } - b = base; - - /* Swallow leading whitespace and get sign, if any. */ - neg = false; - p = nptr; - while (true) { - switch (*p) { - case '\t': case '\n': case '\v': case '\f': case '\r': case ' ': - p++; - break; - case '-': - neg = true; - /* Fall through. */ - case '+': - p++; - /* Fall through. */ - default: - goto label_prefix; - } - } - - /* Get prefix, if any. */ - label_prefix: - /* - * Note where the first non-whitespace/sign character is so that it is - * possible to tell whether any digits are consumed (e.g., " 0" vs. - * " -x"). - */ - ns = p; - if (*p == '0') { - switch (p[1]) { - case '0': case '1': case '2': case '3': case '4': case '5': - case '6': case '7': - if (b == 0) - b = 8; - if (b == 8) - p++; - break; - case 'x': - switch (p[2]) { - case '0': case '1': case '2': case '3': case '4': - case '5': case '6': case '7': case '8': case '9': - case 'A': case 'B': case 'C': case 'D': case 'E': - case 'F': - case 'a': case 'b': case 'c': case 'd': case 'e': - case 'f': - if (b == 0) - b = 16; - if (b == 16) - p += 2; - break; - default: - break; - } - break; - default: - break; - } - } - if (b == 0) - b = 10; - - /* Convert. */ - ret = 0; - while ((*p >= '0' && *p <= '9' && (digit = *p - '0') < b) - || (*p >= 'A' && *p <= 'Z' && (digit = 10 + *p - 'A') < b) - || (*p >= 'a' && *p <= 'z' && (digit = 10 + *p - 'a') < b)) { - uintmax_t pret = ret; - ret *= b; - ret += digit; - if (ret < pret) { - /* Overflow. */ - set_errno(ERANGE); - return (UINTMAX_MAX); - } - p++; - } - if (neg) - ret = -ret; - - if (endptr != NULL) { - if (p == ns) { - /* No characters were converted. */ - *endptr = (char *)nptr; - } else - *endptr = (char *)p; - } - - return (ret); -} - -static char * -u2s(uintmax_t x, unsigned base, bool uppercase, char *s, size_t *slen_p) -{ - unsigned i; - - i = U2S_BUFSIZE - 1; - s[i] = '\0'; - switch (base) { - case 10: - do { - i--; - s[i] = "0123456789"[x % (uint64_t)10]; - x /= (uint64_t)10; - } while (x > 0); - break; - case 16: { - const char *digits = (uppercase) - ? "0123456789ABCDEF" - : "0123456789abcdef"; - - do { - i--; - s[i] = digits[x & 0xf]; - x >>= 4; - } while (x > 0); - break; - } default: { - const char *digits = (uppercase) - ? "0123456789ABCDEFGHIJKLMNOPQRSTUVWXYZ" - : "0123456789abcdefghijklmnopqrstuvwxyz"; - - assert(base >= 2 && base <= 36); - do { - i--; - s[i] = digits[x % (uint64_t)base]; - x /= (uint64_t)base; - } while (x > 0); - }} - - *slen_p = U2S_BUFSIZE - 1 - i; - return (&s[i]); -} - -static char * -d2s(intmax_t x, char sign, char *s, size_t *slen_p) -{ - bool neg; - - if ((neg = (x < 0))) - x = -x; - s = u2s(x, 10, false, s, slen_p); - if (neg) - sign = '-'; - switch (sign) { - case '-': - if (neg == false) - break; - /* Fall through. */ - case ' ': - case '+': - s--; - (*slen_p)++; - *s = sign; - break; - default: not_reached(); - } - return (s); -} - -static char * -o2s(uintmax_t x, bool alt_form, char *s, size_t *slen_p) -{ - - s = u2s(x, 8, false, s, slen_p); - if (alt_form && *s != '0') { - s--; - (*slen_p)++; - *s = '0'; - } - return (s); -} - -static char * -x2s(uintmax_t x, bool alt_form, bool uppercase, char *s, size_t *slen_p) -{ - - s = u2s(x, 16, uppercase, s, slen_p); - if (alt_form) { - s -= 2; - (*slen_p) += 2; - memcpy(s, uppercase ? "0X" : "0x", 2); - } - return (s); -} - -int -malloc_vsnprintf(char *str, size_t size, const char *format, va_list ap) -{ - int ret; - size_t i; - const char *f; - -#define APPEND_C(c) do { \ - if (i < size) \ - str[i] = (c); \ - i++; \ -} while (0) -#define APPEND_S(s, slen) do { \ - if (i < size) { \ - size_t cpylen = (slen <= size - i) ? slen : size - i; \ - memcpy(&str[i], s, cpylen); \ - } \ - i += slen; \ -} while (0) -#define APPEND_PADDED_S(s, slen, width, left_justify) do { \ - /* Left padding. */ \ - size_t pad_len = (width == -1) ? 0 : ((slen < (size_t)width) ? \ - (size_t)width - slen : 0); \ - if (left_justify == false && pad_len != 0) { \ - size_t j; \ - for (j = 0; j < pad_len; j++) \ - APPEND_C(' '); \ - } \ - /* Value. */ \ - APPEND_S(s, slen); \ - /* Right padding. */ \ - if (left_justify && pad_len != 0) { \ - size_t j; \ - for (j = 0; j < pad_len; j++) \ - APPEND_C(' '); \ - } \ -} while (0) -#define GET_ARG_NUMERIC(val, len) do { \ - switch (len) { \ - case '?': \ - val = va_arg(ap, int); \ - break; \ - case '?' | 0x80: \ - val = va_arg(ap, unsigned int); \ - break; \ - case 'l': \ - val = va_arg(ap, long); \ - break; \ - case 'l' | 0x80: \ - val = va_arg(ap, unsigned long); \ - break; \ - case 'q': \ - val = va_arg(ap, long long); \ - break; \ - case 'q' | 0x80: \ - val = va_arg(ap, unsigned long long); \ - break; \ - case 'j': \ - val = va_arg(ap, intmax_t); \ - break; \ - case 't': \ - val = va_arg(ap, ptrdiff_t); \ - break; \ - case 'z': \ - val = va_arg(ap, ssize_t); \ - break; \ - case 'z' | 0x80: \ - val = va_arg(ap, size_t); \ - break; \ - case 'p': /* Synthetic; used for %p. */ \ - val = va_arg(ap, uintptr_t); \ - break; \ - default: not_reached(); \ - } \ -} while (0) - - i = 0; - f = format; - while (true) { - switch (*f) { - case '\0': goto label_out; - case '%': { - bool alt_form = false; - bool left_justify = false; - bool plus_space = false; - bool plus_plus = false; - int prec = -1; - int width = -1; - unsigned char len = '?'; - - f++; - if (*f == '%') { - /* %% */ - APPEND_C(*f); - break; - } - /* Flags. */ - while (true) { - switch (*f) { - case '#': - assert(alt_form == false); - alt_form = true; - break; - case '-': - assert(left_justify == false); - left_justify = true; - break; - case ' ': - assert(plus_space == false); - plus_space = true; - break; - case '+': - assert(plus_plus == false); - plus_plus = true; - break; - default: goto label_width; - } - f++; - } - /* Width. */ - label_width: - switch (*f) { - case '*': - width = va_arg(ap, int); - f++; - break; - case '0': case '1': case '2': case '3': case '4': - case '5': case '6': case '7': case '8': case '9': { - uintmax_t uwidth; - set_errno(0); - uwidth = malloc_strtoumax(f, (char **)&f, 10); - assert(uwidth != UINTMAX_MAX || get_errno() != - ERANGE); - width = (int)uwidth; - if (*f == '.') { - f++; - goto label_precision; - } else - goto label_length; - break; - } case '.': - f++; - goto label_precision; - default: goto label_length; - } - /* Precision. */ - label_precision: - switch (*f) { - case '*': - prec = va_arg(ap, int); - f++; - break; - case '0': case '1': case '2': case '3': case '4': - case '5': case '6': case '7': case '8': case '9': { - uintmax_t uprec; - set_errno(0); - uprec = malloc_strtoumax(f, (char **)&f, 10); - assert(uprec != UINTMAX_MAX || get_errno() != - ERANGE); - prec = (int)uprec; - break; - } - default: break; - } - /* Length. */ - label_length: - switch (*f) { - case 'l': - f++; - if (*f == 'l') { - len = 'q'; - f++; - } else - len = 'l'; - break; - case 'j': - len = 'j'; - f++; - break; - case 't': - len = 't'; - f++; - break; - case 'z': - len = 'z'; - f++; - break; - default: break; - } - /* Conversion specifier. */ - switch (*f) { - char *s; - size_t slen; - case 'd': case 'i': { - intmax_t val JEMALLOC_CC_SILENCE_INIT(0); - char buf[D2S_BUFSIZE]; - - GET_ARG_NUMERIC(val, len); - s = d2s(val, (plus_plus ? '+' : (plus_space ? - ' ' : '-')), buf, &slen); - APPEND_PADDED_S(s, slen, width, left_justify); - f++; - break; - } case 'o': { - uintmax_t val JEMALLOC_CC_SILENCE_INIT(0); - char buf[O2S_BUFSIZE]; - - GET_ARG_NUMERIC(val, len | 0x80); - s = o2s(val, alt_form, buf, &slen); - APPEND_PADDED_S(s, slen, width, left_justify); - f++; - break; - } case 'u': { - uintmax_t val JEMALLOC_CC_SILENCE_INIT(0); - char buf[U2S_BUFSIZE]; - - GET_ARG_NUMERIC(val, len | 0x80); - s = u2s(val, 10, false, buf, &slen); - APPEND_PADDED_S(s, slen, width, left_justify); - f++; - break; - } case 'x': case 'X': { - uintmax_t val JEMALLOC_CC_SILENCE_INIT(0); - char buf[X2S_BUFSIZE]; - - GET_ARG_NUMERIC(val, len | 0x80); - s = x2s(val, alt_form, *f == 'X', buf, &slen); - APPEND_PADDED_S(s, slen, width, left_justify); - f++; - break; - } case 'c': { - unsigned char val; - char buf[2]; - - assert(len == '?' || len == 'l'); - assert_not_implemented(len != 'l'); - val = va_arg(ap, int); - buf[0] = val; - buf[1] = '\0'; - APPEND_PADDED_S(buf, 1, width, left_justify); - f++; - break; - } case 's': - assert(len == '?' || len == 'l'); - assert_not_implemented(len != 'l'); - s = va_arg(ap, char *); - slen = (prec == -1) ? strlen(s) : prec; - APPEND_PADDED_S(s, slen, width, left_justify); - f++; - break; - case 'p': { - uintmax_t val; - char buf[X2S_BUFSIZE]; - - GET_ARG_NUMERIC(val, 'p'); - s = x2s(val, true, false, buf, &slen); - APPEND_PADDED_S(s, slen, width, left_justify); - f++; - break; - } - default: not_implemented(); - } - break; - } default: { - APPEND_C(*f); - f++; - break; - }} - } - label_out: - if (i < size) - str[i] = '\0'; - else - str[size - 1] = '\0'; - ret = i; - -#undef APPEND_C -#undef APPEND_S -#undef APPEND_PADDED_S -#undef GET_ARG_NUMERIC - return (ret); -} - -JEMALLOC_ATTR(format(printf, 3, 4)) -int -malloc_snprintf(char *str, size_t size, const char *format, ...) -{ - int ret; - va_list ap; - - va_start(ap, format); - ret = malloc_vsnprintf(str, size, format, ap); - va_end(ap); - - return (ret); -} - -void -malloc_vcprintf(void (*write_cb)(void *, const char *), void *cbopaque, - const char *format, va_list ap) -{ - char buf[MALLOC_PRINTF_BUFSIZE]; - - if (write_cb == NULL) { - /* - * The caller did not provide an alternate write_cb callback - * function, so use the default one. malloc_write() is an - * inline function, so use malloc_message() directly here. - */ - write_cb = (je_malloc_message != NULL) ? je_malloc_message : - wrtmessage; - cbopaque = NULL; - } - - malloc_vsnprintf(buf, sizeof(buf), format, ap); - write_cb(cbopaque, buf); -} - -/* - * Print to a callback function in such a way as to (hopefully) avoid memory - * allocation. - */ -JEMALLOC_ATTR(format(printf, 3, 4)) -void -malloc_cprintf(void (*write_cb)(void *, const char *), void *cbopaque, - const char *format, ...) -{ - va_list ap; - - va_start(ap, format); - malloc_vcprintf(write_cb, cbopaque, format, ap); - va_end(ap); -} - -/* Print to stderr in such a way as to avoid memory allocation. */ -JEMALLOC_ATTR(format(printf, 1, 2)) -void -malloc_printf(const char *format, ...) -{ - va_list ap; - - va_start(ap, format); - malloc_vcprintf(NULL, NULL, format, ap); - va_end(ap); -} |