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/*
Copyright (c) 2001, 2011, Oracle and/or its affiliates.
This program is free software; you can redistribute it and/or modify
it under the terms of the GNU General Public License as published by
the Free Software Foundation; version 2 of the License.
This program is distributed in the hope that it will be useful,
but WITHOUT ANY WARRANTY; without even the implied warranty of
MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
GNU General Public License for more details.
You should have received a copy of the GNU General Public License
along with this program; if not, write to the Free Software
Foundation, Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA */
#ifndef _my_stacktrace_h_
#define _my_stacktrace_h_
#include <my_global.h>
#ifdef TARGET_OS_LINUX
#if defined (__x86_64__) || defined (__i386__) || \
(defined(__alpha__) && defined(__GNUC__))
#define HAVE_STACKTRACE 1
#endif
#elif defined(__WIN__) || defined(HAVE_PRINTSTACK)
#define HAVE_STACKTRACE 1
#endif
#if HAVE_BACKTRACE && (HAVE_BACKTRACE_SYMBOLS || HAVE_BACKTRACE_SYMBOLS_FD)
#undef HAVE_STACKTRACE
#define HAVE_STACKTRACE 1
#endif
#define HAVE_WRITE_CORE
#if HAVE_BACKTRACE && HAVE_BACKTRACE_SYMBOLS && \
HAVE_CXXABI_H && HAVE_ABI_CXA_DEMANGLE && \
HAVE_WEAK_SYMBOL
#define BACKTRACE_DEMANGLE 1
#endif
C_MODE_START
#if defined(HAVE_STACKTRACE) || defined(HAVE_BACKTRACE)
void my_init_stacktrace();
void my_print_stacktrace(uchar* stack_bottom, ulong thread_stack);
void my_safe_print_str(const char* val, int max_len);
void my_write_core(int sig);
#if BACKTRACE_DEMANGLE
char *my_demangle(const char *mangled_name, int *status);
#endif
#ifdef __WIN__
void my_set_exception_pointers(EXCEPTION_POINTERS *ep);
#endif
#endif
#ifndef _WIN32
#define MY_ADDR_RESOLVE_FORK
#endif
#if defined(HAVE_BFD_H) || defined(MY_ADDR_RESOLVE_FORK)
#define HAVE_MY_ADDR_RESOLVE 1
#endif
typedef struct {
const char *file;
const char *func;
uint line;
} my_addr_loc;
#ifdef HAVE_MY_ADDR_RESOLVE
int my_addr_resolve(void *ptr, my_addr_loc *loc);
const char *my_addr_resolve_init();
#else
#define my_addr_resolve_init() (0)
#define my_addr_resolve(A,B) (1)
#endif
#ifdef HAVE_WRITE_CORE
void my_write_core(int sig);
#endif
/**
Async-signal-safe utility functions used by signal handler routines.
Declared here in order to unit-test them.
These are not general-purpose, but tailored to the signal handling routines.
*/
/**
Converts a longlong value to string.
@param base 10 for decimal, 16 for hex values (0..9a..f)
@param val The value to convert
@param buf Assumed to point to the *end* of the buffer.
@returns Pointer to the first character of the converted string.
Negative values:
for base-10 the return string will be prepended with '-'
for base-16 the return string will contain 16 characters
Implemented with simplicity, and async-signal-safety in mind.
*/
char *my_safe_itoa(int base, longlong val, char *buf);
/**
Converts a ulonglong value to string.
@param base 10 for decimal, 16 for hex values (0..9a..f)
@param val The value to convert
@param buf Assumed to point to the *end* of the buffer.
@returns Pointer to the first character of the converted string.
Implemented with simplicity, and async-signal-safety in mind.
*/
char *my_safe_utoa(int base, ulonglong val, char *buf);
/**
A (very) limited version of snprintf.
@param to Destination buffer.
@param n Size of destination buffer.
@param fmt printf() style format string.
@returns Number of bytes written, including terminating '\0'
Supports 'd' 'i' 'u' 'x' 'p' 's' conversion.
Supports 'l' and 'll' modifiers for integral types.
Does not support any width/precision.
Implemented with simplicity, and async-signal-safety in mind.
*/
size_t my_safe_snprintf(char* to, size_t n, const char* fmt, ...)
ATTRIBUTE_FORMAT(printf, 3, 4);
/**
A (very) limited version of snprintf, which writes the result to STDERR.
@sa my_safe_snprintf
Implemented with simplicity, and async-signal-safety in mind.
@note Has an internal buffer capacity of 512 bytes,
which should suffice for our signal handling routines.
*/
size_t my_safe_printf_stderr(const char* fmt, ...)
ATTRIBUTE_FORMAT(printf, 1, 2);
/**
Writes up to count bytes from buffer to STDERR.
Implemented with simplicity, and async-signal-safety in mind.
@param buf Buffer containing data to be written.
@param count Number of bytes to write.
@returns Number of bytes written.
*/
size_t my_write_stderr(const void *buf, size_t count);
C_MODE_END
#endif /* _my_stacktrace_h_ */
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