summaryrefslogtreecommitdiffstats
path: root/deps/jemalloc/src/malloc_io.c
diff options
context:
space:
mode:
Diffstat (limited to 'deps/jemalloc/src/malloc_io.c')
-rw-r--r--deps/jemalloc/src/malloc_io.c675
1 files changed, 675 insertions, 0 deletions
diff --git a/deps/jemalloc/src/malloc_io.c b/deps/jemalloc/src/malloc_io.c
new file mode 100644
index 0000000..d7cb0f5
--- /dev/null
+++ b/deps/jemalloc/src/malloc_io.c
@@ -0,0 +1,675 @@
+#define JEMALLOC_MALLOC_IO_C_
+#include "jemalloc/internal/jemalloc_preamble.h"
+#include "jemalloc/internal/jemalloc_internal_includes.h"
+
+#include "jemalloc/internal/malloc_io.h"
+#include "jemalloc/internal/util.h"
+
+#ifdef assert
+# undef assert
+#endif
+#ifdef not_reached
+# undef not_reached
+#endif
+#ifdef not_implemented
+# undef not_implemented
+#endif
+#ifdef assert_not_implemented
+# undef assert_not_implemented
+#endif
+
+/*
+ * Define simple versions of assertion macros that won't recurse in case
+ * of assertion failures in malloc_*printf().
+ */
+#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(); \
+ } \
+ unreachable(); \
+} while (0)
+
+#define not_implemented() do { \
+ if (config_debug) { \
+ malloc_write("<jemalloc>: Not implemented\n"); \
+ abort(); \
+ } \
+} while (0)
+
+#define assert_not_implemented(e) do { \
+ if (unlikely(config_debug && !(e))) { \
+ not_implemented(); \
+ } \
+} while (0)
+
+/******************************************************************************/
+/* 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) {
+ malloc_write_fd(STDERR_FILENO, s, strlen(s));
+}
+
+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(int err, char *buf, size_t buflen) {
+#ifdef _WIN32
+ FormatMessageA(FORMAT_MESSAGE_FROM_SYSTEM, NULL, err, 0,
+ (LPSTR)buf, (DWORD)buflen, NULL);
+ return 0;
+#elif defined(JEMALLOC_STRERROR_R_RETURNS_CHAR_WITH_GNU_SOURCE) && defined(_GNU_SOURCE)
+ char *b = strerror_r(err, buf, buflen);
+ if (b != buf) {
+ strncpy(buf, b, buflen);
+ buf[buflen-1] = '\0';
+ }
+ return 0;
+#else
+ return strerror_r(err, buf, buflen);
+#endif
+}
+
+uintmax_t
+malloc_strtoumax(const char *restrict nptr, char **restrict endptr, int base) {
+ uintmax_t ret, digit;
+ unsigned b;
+ bool neg;
+ const char *p, *ns;
+
+ p = nptr;
+ if (base < 0 || base == 1 || base > 36) {
+ ns = p;
+ set_errno(EINVAL);
+ ret = UINTMAX_MAX;
+ goto label_return;
+ }
+ b = base;
+
+ /* Swallow leading whitespace and get sign, if any. */
+ neg = false;
+ 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': 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:
+ p++;
+ ret = 0;
+ goto label_return;
+ }
+ }
+ 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);
+ ret = UINTMAX_MAX;
+ goto label_return;
+ }
+ p++;
+ }
+ if (neg) {
+ ret = (uintmax_t)(-((intmax_t)ret));
+ }
+
+ if (p == ns) {
+ /* No conversion performed. */
+ set_errno(EINVAL);
+ ret = UINTMAX_MAX;
+ goto label_return;
+ }
+
+label_return:
+ 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) {
+ 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;
+}
+
+size_t
+malloc_vsnprintf(char *str, size_t size, const char *format, va_list ap) {
+ 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 && 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 ((unsigned char)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 'j' | 0x80: \
+ val = va_arg(ap, uintmax_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(); \
+ val = 0; \
+ } \
+} 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 = '?';
+ char *s;
+ size_t slen;
+
+ f++;
+ /* Flags. */
+ while (true) {
+ switch (*f) {
+ case '#':
+ assert(!alt_form);
+ alt_form = true;
+ break;
+ case '-':
+ assert(!left_justify);
+ left_justify = true;
+ break;
+ case ' ':
+ assert(!plus_space);
+ plus_space = true;
+ break;
+ case '+':
+ assert(!plus_plus);
+ plus_plus = true;
+ break;
+ default: goto label_width;
+ }
+ f++;
+ }
+ /* Width. */
+ label_width:
+ switch (*f) {
+ case '*':
+ width = va_arg(ap, int);
+ f++;
+ if (width < 0) {
+ left_justify = true;
+ width = -width;
+ }
+ 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;
+ break;
+ } default:
+ break;
+ }
+ /* Width/precision separator. */
+ if (*f == '.') {
+ f++;
+ } else {
+ goto label_length;
+ }
+ /* 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 'q': case 'j': case 't': case 'z':
+ len = *f;
+ f++;
+ break;
+ default: break;
+ }
+ /* Conversion specifier. */
+ switch (*f) {
+ case '%':
+ /* %% */
+ APPEND_C(*f);
+ f++;
+ break;
+ 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 < 0) ? strlen(s) : (size_t)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_reached();
+ }
+ break;
+ } default: {
+ APPEND_C(*f);
+ f++;
+ break;
+ }}
+ }
+ label_out:
+ if (i < size) {
+ str[i] = '\0';
+ } else {
+ str[size - 1] = '\0';
+ }
+
+#undef APPEND_C
+#undef APPEND_S
+#undef APPEND_PADDED_S
+#undef GET_ARG_NUMERIC
+ return i;
+}
+
+JEMALLOC_FORMAT_PRINTF(3, 4)
+size_t
+malloc_snprintf(char *str, size_t size, const char *format, ...) {
+ size_t 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;
+ }
+
+ 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_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_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);
+}
+
+/*
+ * Restore normal assertion macros, in order to make it possible to compile all
+ * C files as a single concatenation.
+ */
+#undef assert
+#undef not_reached
+#undef not_implemented
+#undef assert_not_implemented
+#include "jemalloc/internal/assert.h"
generated by cgit v1.2.3 (git 2.39.1) at 2024-11-22 07:22:32 +0000