Charles Mita
482ab573af
This helps prevent potential segfaults due to null-pointer dereferencing in the face of errors when the plugin is accessed via multiple threads. If multiple threads are pushing errors onto the error stack then its possible for elements of the various string pointer arrays to be left NULL, causing a segfault when the stack is printed. Whilst this does nothing to address the "correctness" of the plugin in a multi-threaded context, at least it shouldn't crash. Error messages may still be corrupted.
56 lines
1006 B
C
56 lines
1006 B
C
/*
|
|
* Copyright (c) 2018 Diamond Light Source Ltd.
|
|
* Author: Charles Mita
|
|
*/
|
|
|
|
|
|
#ifndef NXS_XDS_ERR_H
|
|
#define NXS_XDS_ERR_H
|
|
|
|
|
|
#define ERR_MAX_FILENAME_LENGTH 64
|
|
#define ERR_MAX_FUNCNAME_LENGTH 128
|
|
#define ERR_MAX_MESSAGE_LENGTH 1024
|
|
#define ERR_MAX_STACK_SIZE 128
|
|
|
|
|
|
/* obtain __func__ from GCC if no C99 */
|
|
#if __STDC_VERSION__ < 199901L
|
|
# if __GNUC__ >= 2
|
|
# define __func__ __FUNCTION__
|
|
# else
|
|
# define __func__ "<unknown>"
|
|
# endif
|
|
#endif
|
|
|
|
#if __GNUC__ >= 2
|
|
# define __line__ __LINE__
|
|
#else
|
|
# define __line__ 0
|
|
#endif
|
|
|
|
#if __GNUC__ >= 2
|
|
# define __file__ __FILE__
|
|
#else
|
|
# define __file__ "unknown"
|
|
#endif
|
|
|
|
#define ERROR_JUMP(err, target, message) \
|
|
{ \
|
|
push_error_stack(__file__, __func__, __line__, err, message); \
|
|
retval = err; \
|
|
goto target; \
|
|
}
|
|
|
|
void push_error_stack(const char *file, const char *func, int line, int err, const char *message);
|
|
|
|
void dump_error_stack(FILE *out);
|
|
|
|
void reset_error_stack();
|
|
|
|
int init_h5_error_handling();
|
|
|
|
int init_error_handling();
|
|
|
|
#endif /* NXS_XDS_ERR_H */
|